This article is devoted to the problems of managing and accessing production risks during geological and technical (technological) measures (GTM) using innovative solutions at oil and gas fields. The influence of various factors on the performance of innovations for geological and technical activities taking into account GTA specifics, features and the oil and gas producing company as a whole is determined. The main causes of the risks arising from GTM performance in the process of developing oil and gas fields as well as factors affecting the effectiveness of the implemented measures are outlined.

Keywords: innovation; risk management; geological and technical measures; oil and gas wells; production; economic effect; project.

References

1.  Gasumov, E. R. (2011). Innovacionnaya deyatel'nost' v neftegazodobyche. Aktual'nye problemy gumanitarnyh i estestvennyh nauk, 11(34), 87-90..
2. Gasumov, R. A., Ahmedov, K. S., Tolpayev, V. A., Filippov, A. G. (2012). Mathematical models in the management of geological and technical measures in the gas industry. Moscow: Gazprom Expo.
3. Ansoff, I. Strategic management. Moscow: Ekonomika.
4. Sheremet, V. V., Pavlyuchenko, V. M. Investment management. Moscow: Business School. Intel-Sintez.
5. Gasumov, R. A. (2011). Management of innovations while performing geological-and-technical measures with well stock. Problems of Economics and Management of Oil and Gas Complex, 7, 26-30.
6. Ryzhikova, O. N. (2011). Risk – management of innovative projects. Audit and Financial Analysis, 6, 4-8.
7. Kossov, V. V., Livshits, V. N., Shakhnazarov, A. G., et al. (2000). Methodical recommendations for evaluating the effectiveness of investment projects. Moscow: Ekonomika.
8. Gibson, R. The formation of the investment portfolio: financial risk management. Moscow: Alpina Publisher.
9. Gasumov, E. R. (2011). Realizaciya innovacionnyh podhodov pri razrabotke gazovyh i gazokondensatnyh mestorozhdenij. Nauka i TEK, 6, 85-88..
10. Gasumov, R. A., Gasumov, E. R., Toropcev, E. L., Tatochenko, T. V. (2013). Optimizaciya zatrat fonda innovacionnogo razvitiya gazovoj otrasli. Nauka i tekhnika v gazovoj promyshlennosti, 4(56), 11-15..
11. Gasumov, R. A., Gasumov, E. R. (2016). Innovative solutions to ensure project level of gas production. Oilfield Engineering, 10, 20-27.
12. Gasumov, R. A., Gasumov, E. R. (2017). Innovative solutions for projecting oil and gas production objects. Oil and Gas Territory, 4, 78-83.
13. Kulikova, E. E. (2008). Risk-management. Innovative aspect. Moscow: Berator-Publishing.

The article investigated the deformation processes of the well wall, adopted by the self-plastic model of volcanic rocks, and solved the problem of dynamic instability. A method has been developed to estimate the velocity and amplitude characteristics of the well pressure change that prevents the loss of stability of the mountain rocks (that is, to prevent the collapse and collapse of the well-elastic rock rocks in the wall). On the basis of the theoretical study of the relative deformation of the volume-self-elastic mountain rocks at periodic changes of the additional pressure in the spatial space, the conditions for its stationary and unstable variations are established.

Keywords: borehole rocks; dynamic instability; frequency and amplitude characteristics; volume deformation.

References

1. Basarygin, Yu. M., Budnikov, V. F., Bulatov, A. I., Geraskin, V. G. (2000). Construction of downward sloping and horizontal wells. Мoscow: Nedra.
2. Gilyazov, R. M. (2002). Drilling oil wells with lateral boreholes. Мoscow: Nedra.
3. Lehnitsky, S. G. (1977). Theory of elasticity of an anisotropic body. Moscow: Nauka.
4. Seid-Rza, M. K., Farajev, T. G., Hasanov, R. A. (1992). Prevention of complications in the kinetics of drilling processes. Moscow: Nedra.
5. Stockley, K. O. (1991). Improving the efficiency of horizontal drilling in fractured carbonates. Oil, Gas and Petrochemicals Abroad, 10.
6. Cherepanov, G. P. (1987). Mechanics of rock failure during in drilling. Moscow: Nedra.
7. Shirali, I., Hasanov, R. (2017). Drilling of the wells: Innovative technics and technology. Germany: Lambert Academic Publisher.
8. Hasanov, R. A., Shirali, I. Y., Kazimov, M. I. (2020). Determination of the amplitude–frequency Characteristics of the well pressure preventing the destruction of wellbore rocks. Global Journal of Science Frontier Research: H - Environmental and Earth Science, 20(1), 36-42.
9. Chuanliang, Y., Jingen, D., Baohua, Y., et al. (2018). Wellbore stability analysis and its application in the Fergana basin, central Asia–US department of energy, office of Science, https://www.science.gov/ topicpages/w/wellbore+mechanical+limitations.html

In the presented study was investigated the effectiveness of the injection process of «dry» hydrocarbon gases to the bottom-hole zone, depending on the different stages of gas condensate fields development. The experiments were carried out in a special sequence of PVT bombs, to eliminate the impact of specific factors caused by the concrete development conditions of different fields. For this purpose, five series of experiments were performed, and some experiments were repeated several times to confirm the results. Obtained results were not only helpful in assessing the injection process, but also for selecting an effective injection option. Thus, for the first time, the process of «dry» gases injection to the bottom-hole zone has been experimentally investigated at all stages of gas condensate fields development, and effectiveness of the process has been determined at the first stage of field development. It has also been established that maximum condensate production can be achieved even with lower pressure by controlling the condensate volume of the layer system and single phase.

Keywords: retrograde condensate; reservoir depletion; gas condensate system; evaporation of drop out condensate; starting pressure of condensation; injection of  hydrocarbon gas.

References

1. Abasov, M. T., Abbasov, Z. Ya., Fataliev, V. M., et al. (2009). Phase transformations in condensate pool development. Doklady Earth Sciences, 427(2), 939–942.
2. Dzhalalov, G. I., Ibragimov, T. M., Aliev, A. A., Gorshkova, E. V. (2018). Modelirovanie i issledovanie fil'tracionnyh processov glubokozalegayushchih mestorozhdenij nefti i gaza. Baku: «Nauka i obrazovanie» IPP.
3. Izyumchenko, D. V., Lapshin, V. I., Nikolaev, V. M. i dr. (2010). Kondensatotdacha pri razrabotke neftegazokondensatnyh zalezhej na istoshchenie. Gazovaya promyshlennost', 1, 24-27.
4. Lyugaj, D. V., Lapshin, V. I., Volkov, A. N. i dr. (2011). Sovershenstvovanie metodik eksperimental'nogo izucheniya fazovyh prevrashchenij gazokondensatnyh sistem. Vesti gazovoj nauki, 6, 103-119..
5. Mirzadzhanzade, A.Kh., Ametov, I. М., Kovalev, А. G. (2005). Physics of oil and gas reservoir. Moscow–Ijevsk: Institute of. Computer Sciences.
6. Glavnov, N., Kuntsevich, V., Vershinina, M., et.al. (2017, October). EOR miscible gas project in oil-gas condensate field. SPE-187858-MS. In: SPE Russian Petroleum Technology Conference.
7. Meng, X., Sheng, J. (2016). Experimental and numerical study of huff-n-puff gas injection to re-vaporize liquid dropout in shale gas condensate reservoirs. Journal of Natural Gas Science and Engineering, 35, 444-454.
8. Gritseko, A. I., Gritsenko, I. A., Yushkin, V. V., Ostrovskaya, T. D. (1995). Scientific bases of the forecast of phase behavior of sheeted gas-condensate systems. Moscow: Nedra.
9. Gritsenko, A. I., Remizov, V. V. (1995). Guidelines for the recovery of gas condensate wells. Moscow: VNIIGAZ.
10. Temizel, C., Kirmaci, H., Tiwari, A., et.al. (2016, November). An investigation of gas recycling in fractured gas-condensate reservoirs. SPE-182854-MS. In: Abu Dhabi International Petroleum Exhibition & Conference.
11. Abasov, M. T., Abbasov, Z. V., Jalalov, G. I., et al. (2005). The influence of porous medium on condensate evaporation under affect by «dry» hydrocarbon gas. Doklady Earth Sciences, 405(3), 368-370.
12. Abasov, M. T., Abbasov, Z. Ya., Fataliev, V. M., et al. (2011). Experimental study of influence factors on the bottom hole zone of gascondensate well on different stages of its exploitation. ANAS Transactions, Earth Sciences, 2, 25-31.
13. Mirzadzhanzade, A. Kh., Kuznetsov, O. L., Basniev, K. S., Aliev, Z. S. (2003). Basics of gas production. Moscow: Nedra.
14. Efros, D. A. (1963). Research the filtration of inhomogeneous systems. Leningrad: Gostoptekhizdat.

This article presents the results of a comprehensive geochemical study of 10 core samples and 5 oil samples from five different fields (Karaton, Akkuduk, Botakhan, S.Nurzhanov and Balgimbaev) in the southern part of the Caspian basin. According to the results of core material studies, it was found that among all the samples, only shaly samples (1300-1580 m) of well No. 600 of the Karaton field lie almost at the beginning of the oil formation phase, although they do not possess industrial potential. Then, correlation «oil-source rock» was carried out by comparing the mass fragmentograms of terpanes in oils derived from each reservoir and extracts from cuttings and core to discern the presence or absence of a genetic relationship between them. Extracts and oils of one field (for example Karaton and Akkuduk) showed different genetic characteristics.

Keywords: Rock Eval; vitrinite reflectance; biomarkers; «oil-source rock» correlation; gas chromatography; kinetic analysis; IR spectroscopy.

References

1. Sejthaziev, E. SH., Tasemenov, E. T., Dosmuhambetov, A. K., Absalyamov, D. B. (2019). Geneticheskie tipy neftej produktivnyh otlozhenij Yuzhnoj chasti prikaspijskoj vpadiny. Materialy mezhdunarodnoj nauchnoprakticheskoj konferencii «Sovremennye metody razrabotki mestorozhdenij s trudnoizvlekaemymi zapasami i netradicionnymi kollektorami». Atyrau: Filial TOO «KMG Inzhiniring» «Kaspijmunajgaz», 2, 416-128.
2. Sejthaziev, E. SH., Tasemenov, E. T., Dosmuhambetov, A. K., Absalyamov, D. B. (2019). Geohimicheskie osobennosti nefti razvedochnyh skvazhin g-2 i g-9 mestorozhdeniya Karasor zapadnyj. Materialy mezhdunarodnoj nauchnoprakticheskoj konferencii «Sovremennye metody razrabotki mestorozhdenij s trudnoizvlekaemymi zapasami i netradicionnymi kollektorami». Atyrau: Filial TOO «KMG Inzhiniring» «Kaspijmunajgaz», 2, 428-436.
3. Sejthaziev, E. SH., Tasemenov, E. T. (2019). Molekulyarnyj i izotopnyj sostav ugleroda v obrazcah poputnyh gazov. Nauchno-tekhnicheskij zhurnal «Neft' i gaz», 5(113), 64-79.
4. Seitkhaziyev, Y. Sh. (2019). Genetic classification of oil samples of carbonate origin from fields of the southern part of the Caspian Basin. SOCAR Proceedings, 3, 40-60.
5. Sejthaziev, E. SH., Dosmuhambetov, A. K, Latipova, A. M. (2019). Geohimicheskie issledovaniya prob nefti i obrazcov kerna AO «Embamunajgaz». Otchet po dogovoru №469-112//40/2019AT ot 18.03.2019g. «KMG Inzhiniring» «Kaspijmunajgaz».
6. Peters, K. E., Walters, C. C., Moldowan, J. M. (2005). The biomarker guide. Vol.2. Biomarkers and isotopes in petroleum systems and earth history. Cambridge University Press.
7. Fomin, A. N. (1987). Uglepetrograficheskie issledovaniya v neftyanoj geologii. Novosibirsk: IGIG.
8. Bogorodskaya, L. I., Kontorovich, A. E., Larichev, A. I. (2005). Kerogen: methods of study, geochemical interpretation. Novosibirsk: SO RAN Publ.
9. Ivanov, V. P. (2015). Kompleksnaya ocenka kamennougol'no-permskih uglenosnyh otlozhenij i razrabotka promyshlenno-energeticheskoj klassifikacii iskopaemyh uglej. Dissertaciya na soiskanie uchenoj stepeni doktora geologo-mineralogicheskih nauk. Tomsk: Nacional'nyj issledovatel'skij Tomskij politekhnicheskij universitet.
10. Ivanov, V. P. Metod opredeleniya biogeneticheskih priznakov obrazovaniya i stroeniya ugleficirovannogo veshchestva. Reestr registratora-depozitariya nou-hau Kemerovskoj regional'noj obshchestvennoj organizacii «Kuzbasskaya inzhenernaya akademiya», № 038.19.A.

The article provides an overview of modern deep flow diversion technologies and examples of their field implementation. Today, the vast majority of the methods used to increase oil recovery are associated with the use of water-based flooding methods, which over time inevitably leads to the emergence of highly permeable channels and sections of the reservoir that are not swept at all. In this regard, the introduction of deep-flow diverting technologies to increase reservoir sweep efficiency and redirect flow to unswept zones of the reservoir is becoming increasingly relevant and significant. These technologies are extremely effective in terms of reduction in reservoir heterogeneity. The current trend in this area is to increase the proportion of preformed particles application. However, the full potential of the technologies presented, unfortunately, has not been disclosed and continues to be studied to this day. With the increase in the number of oilfields at a late stage of development, the significance of flow diverting technologies will only grow.

Keywords: enhanced oil recovery; in-situ fluid diversion; conformance control; injection profile; reservoir heterogeneity; mature oil fields.

References

1. Suleimanov, B. A., Ismaylov, F. S., Veliyev, E. F. (2014). On the metal nanoparticles effect on the strength of polymer gels based on carboxymethyl cellulose, applying at oil recovery. Oil Industry, 1, 86-88.
2. Suleimanov, B. A., Dyshin, O. A., Veliyev, E. F. (2016, October). compressive strength of polymer nanogels used for enhanced oil recovery EOR. In SPE Russian Petroleum Technology Conference and Exhibition. Society of Petroleum Engineers.
3. Suleimanov, B. A., Veliyev, E. F., Dyshin, O. A. (2015). Effect of nanoparticles on the compressive strength of polymer gels used for enhanced oil recovery (EOR). Petroleum Science and Technology, 33(10), 1133-1140.
4. Suleimanov, B. A., Azizov, F., Abbasov, E. M. (1998). Specific features of the gas-liquid mixture filtration. Acta Mechanica, 130(1-2), 121-133.
5. Suleimanov, B. A. (1995). Filtration of disperse systems in a nonhomogeneous porous medium. Colloid Journal, 57(5), 704-707.
6. Panakhov, G. M., Suleimanov, B. A. (1995). Specific features of the flow of suspensions and oii disperse systems. Colloid Journal, 57(3), 359-363.
7. Jokhio, S. A., Berry, M. R., Bangash, Y. K. (2002, January). DOWS (Downhole Oil-Water Separation) crosswaterflood economics. In SPE/DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
8. Kansao, R., Yrigoyen, A., Haris, Z., Saputelli, L. (2017, June). Waterflood performance diagnosis and optimization using data-driven predictive analytical techniques from capacitance resistance models CRM. In SPE Europec featured at 79th EAGE Conference and Exhibition. Society of Petroleum Engineers.
9. Turta, A. T., Ayasse, C., Najman, J., Fisher, D., Singhal, A. (2002, January). Laboratory investigation of gravity-stable waterflooding using toe-to-heel displacement: Part L: Hele Shaw model results. In International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference. Society of Petroleum Engineers.
10. Suleimanov, B.A., Latifov, Y. A., Veliyev, E. F. (2019). Softened water application for enhanced oil recovery. SOCAR Proceedings, 1, 19-29.
11. Suleimanov, B. A., Latifov, Y. A., Veliyev, E. F., Frampton, H. (2017, November). Low salinity and low hardness alkali water as displacement agent for secondary and tertiary flooding in sandstones. In SPE Annual Caspian Technical Conference and Exhibition. Society of Petroleum Engineers
12. Alvarez, J. M., Sawatzky, R. P. (2013, June). Waterflooding: same old, same old?. In SPE Heavy Oil Conference-Canada. Society of Petroleum Engineers.
13. Izgec, B., Kabir, S. (2011). Identification and characterization of high-conductive layers in waterfloods. SPE Reservoir Evaluation & Engineering, 14(01), 113-119.
14. Wu, X. C., Xiong, C., Han, D., et al. (2014, October). A new IOR method for mature waterflooding reservoirs: sweep control technology. In SPE Asia Pacific Oil & Gas Conference and Exhibition. Society of Petroleum Engineers.
15. Suleimanov, B. A., Veliyev, E. F. (2016, November). Nanogels for deep reservoir conformance control. In SPE Annual Caspian Technical Conference & Exhibition. Society of Petroleum Engineers.
16. Suleimanov, B. A., Ismailov, F. S., Veliyev, E. F., Dyshin, O. A. (2013). The influence of light metal nanoparticles on the strength of polymer gels used in oil industry. SOCAR Proceedings, 2, 24-28.
17. Suleimanov, B. A., Latifov, Y. A., Veliyev, E. F., Frampton, H. (2018). Comparative analysis of the EOR mechanisms by using low salinity and low hardness alkaline water. Journal of Petroleum Science and Engineering, 162, 35-43.
18. Suleimanov, B. A., Ismayilov, F. S., Dyshin, O. A., Veliyev, E. F. (2016). Selection methodology for screening evaluation of EOR methods. Petroleum Science and Technology, 34(10), 961-970.
19. Suleimanov, B. A., Ismailov, F. S., Dyshin, O. A., Veliyev, E. F. (2016, October). Screening evaluation of EOR methods based on fuzzy logic and bayesian inference mechanisms. In SPE Russian Petroleum Technology Conference and Exhibition. Society of Petroleum Engineers.
20. Breston, J. N. (1957). Selective plugging of waterflood input wells theory, methods and results. Journal of Petroleum Technology, 9(3), 26-31.
21. Hower, W. F., Ramos, J. (1957). Selective plugging of injection wells by in situ reactions. Journal of Petroleum Technology, 9(01), 17-20.
22. Fielding Jr, R. C., Gibbons, D. H., Legrand, F. P. (1994, January). In-depth drive fluid diversion using an evolution of colloidal dispersion gels and new bulk gels: an operational case history of north rainbow ranch unit. In SPE/ DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
23. Mack, J. C., Smith, J. E. (1994, January). In-depth colloidal dispersion gels improve oil recovery efficiency. In SPE/DOE improved oil recovery symposium. Society of Petroleum Engineers.
24. Suleimanov, B. A., Veliyev, E. F. (2017). Novel polymeric nanogel as diversion agent for enhanced oil recovery. Petroleum Science and Technology, 35(4), 319-326.
25. Suleimanov, B. A., Veliyev, E. F., & Azizagha, A. A. (2020). Colloidal dispersion nanogels for in-situ fluid diversion. Journal of Petroleum Science.
26. Sydansk, R. D. (1990). A newly developed chromium (III) gel technology. SPE Reservoir Engineering, 5(3), 346-352.
27. Han, M., Shi, L., Ye, M., Guo, Q. (1996). Characterization of viscoelastic properties of polyacrylamide/Cr(III) hydrogels. Polymer Bulletin, 36(4), 483-487.
28. Huai Jiang, Z. H. U. (2002). Effect of weak gels on oil/water relative permeability. Acta Petrolei Sinica, 3.
29. Wang, W., Gu, Y., Liu, Y. (2003). Applications of weak gel for in-depth profile modification and oil displacement. Journal of Canadian Petroleum Technology, 42(06).
30. Imqam, A., Bai, B. (2015). Optimizing the strength and size of preformed particle gels for better conformance control treatment. Fuel, 148, 178-185.
31. Ентов, В. М., Турецкая, Ф. Д. (1995). Гидродинамическое моделирование разработки неоднородных нефтяных пластов. Известия РАН. Механика жидкости и газа, 6, 87-94.
32. Abdulbaki, M., Huh, C., Sepehrnoori, K., et al. (2014). A critical review on use of polymer microgels for conformance control purposes. Journal of Petroleum Science and Engineering, 122, 741-753.
33. Al-Wahaibi, Y. M., Al-Wahaibi, T. K., Abdelgoad, M. A. (2011). Characterization of pH-sensitive Polymer microgel transport in porous media for improving oil recovery. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 33(11), 1048-1057.
34. Thorne, J. B., Vine, G. J., Snowden, M. J. (2011). Microgel applications and commercial considerations. Colloid and Polymer Science, 289(5-6), 625.
35. Chauveteau, G., Tabary, R., Blin, N., et al. (2004, January). Disproportionate permeability reduction by soft preformed microgels. In SPE/DOE Symposium on Improved Oil Recovery. Society of Petroleum Engineers.
36. Zaitoun, A., Tabary, R., Rousseau, D., et al. (2007, January). Using microgels to shut off water in a gas storage well. In International Symposium on Oilfield Chemistry. Society of Petroleum Engineers.
37. Bai, B., Zhang, H. (2011). Preformed-particle-gel transport through open fractures and its effect on water flow. SPE Journal, 16(02), 388-400.
38. Bai, B., Liu, Y., Coste, J. P., Li, L. (2007). Preformed particle gel for conformance control: transport mechanism through porous media. SPE Reservoir Evaluation & Engineering, 10(02), 176-184.
39. Bai, B., Wei, M., Liu, Y. (2012). Injecting large volumes of preformed particle gel for water conformance control. Oil & Gas Science and Technology–Revue d’IFP Energies nouvelles, 67(6), 941-952.
40. Bai, B., Li, L., Liu, Y., et al. (2007). Preformed particle gel for conformance control: factors affecting its properties and applications. SPE Reservoir Evaluation & Engineering, 10(04), 415-422.
41. Wang, J., Liu, H., Wang, Z., et al. (2013). Numerical simulation of preformed particle gel flooding for enhancing oil recovery. Journal of Petroleum Science and Engineering, 112, 248-257.
42. Frampton, H., Morgan, J. C., Cheung, S. K., et al. (2004, January). Development of a novel waterflood conformance control system. In: SPE/DOE Symposium on Improved Oil Recovery. Society of Petroleum Engineers.
43. Pritchett, J., Frampton, H., Brinkman, J., et al. (2003, January). Field application of a new in-depth waterflood conformance improvement tool. In SPE international improved oil recovery conference in Asia Pacific. Society of Petroleum Engineers.
44. Akinin, D. V., Timchuk, A., Zemtcov, Y. V., Bochkarev, O. Y. (2013, April). Methodology of selecting pilot development areas for application of BrightWater™ technology. In: IOR 2013-17th European Symposium on Improved Oil Recovery (pp. cp-342). European Association of Geoscientists & Engineers.
45. Fethi, G., Kaddour, K., Tesconi, M., et al. (2010, January). El Borma-Bright Water-tertiary method of enhanced oil recovery for a mature field. In SPE Production and Operations Conference and Exhibition. Society of Petroleum Engineers.
46. Jenneman, G. E., Lappan, R. E., Webb, R. H. (2000, January). Bacterial profile modification with bulk dextran gels produced by the in-situ growth and metabolism of leuconostoc species. In SPE/DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
47. Veliyev, E. F., Aliyev, A. A., Guliyev, V. V., Naghiyeva, N. V. (2019, October). Water shutoff using crosslinked polymer gels. In SPE Annual Caspian Technical Conference. Society of Petroleum Engineers.
48. Fedorov, K. M., Zubkov, P. T. (1996). Placement of gels in stratified reservoirs using a sequential injection technique. Journal of Petroleum Science and Engineering, 15(1), 69-80.
49. Hassan, S. F., Han, M., Zhou, X., et al. (2013, May). Study of polyacrylamide/Cr (III) hydrogels for conformance control in injection wells to enhance chemical flooding process. In SPE Saudi Arabia Section Technical Symposium and Exhibition. Society of Petroleum Engineers.
50. Needham, R. B., Threlkeld, C. B., Gall, J. W. (1974, January). Control of water mobility using polymers and multivalent cations. In SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
51. Gazizov, A. A. (2002). Enhanced oil recovery from heterogeneous formations in late stages of development. Moscow: Nedra.
52. Gazizov, A. Sh. (1992). Povyshenie nefteotdachi plastov ogranicheniem dvizheniya vod himicheskimi reagentami. Neftyanoe hozyajstvo, 1, 20-22.
53. Gazizov, A. Sh., Galaktionova, L. А., Adigamov, V. S., Gazizov, A. A. (1998). Application of polymer-dispersed systems and their modifications for oil recovery enhancement. Oil Industry, 2, 12-14.
54. Khisamov, R. S., Gazizov, A. A., Gazizov, A. Sh. (2003). Increasing the coverage of producing reservoirs by action. Moscow: VNIIOENG.
55. Ganeeva, A. R., Batirbaeva, R. A., Galaktionova, L. A. (2009). Application experience of modified polymer-disperse systems on Nikolsky oil field. Georesursy, 3(31).
56. Mamedov, A. CH., Hajrullin, A. A. (2016). Dispersnye sistemy dlya uvelicheniya nefteotdachi plastov /v kn. «Geologiya i neftegazonosnost' Zapadno-Sibirskogo megabassejna (opyt, innovacii)». – S.84-87.
57. 57. Fedorov, A. V., Hisametdinov, M. R., Ganeeva, Z. M. (2012). Primenenie kompozicij polimerov s dispersnymi reagentami v sostave cellyulozno-polimernogo kompleksa dlya celej uvelicheniya nefteizvlecheniya /v kn. «Sbornik nauchnyh trudov TatNIPIneft'». – S.147-151.
58. Castro-García, R. H., Maya-Toro, G. A., Sandoval-Muñoz, J. E., Cohen-Paternina, L. M. (2013). Colloidal dispersion gels (CDG) to improve volumetric sweep efficiency in waterflooding processes. CT&F-Ciencia, Tecnología y Futuro, 5(3), 61-77.
59. Mishra, A., Abbas, S., Braden, J., et al. (2016, April). Comprehensive review of fracture control for conformance improvement in the Kuparuk River Unit-Alaska. In SPE Improved Oil Recovery Conference. Society of Petroleum Engineers.
60. Manrique, E., Reyes, S., Romero, J., et al. (2014, March). Colloidal Dispersion Gels (CDG): Field Projects Review. In SPE EOR Conference at Oil and Gas West Asia. Society of Petroleum Engineers.
61. Bjørsvik, M., Høiland, H., Skauge, A. (2008). Formation of colloidal dispersion gels from aqueous polyacrylamide solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 317(1-3), 504-511.
62. Smith, J. E. (1995, January). Performance of 18 polymers in aluminum citrate colloidal dispersion gels. In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers.
63. Spildo, K., Skauge, A., Skauge, T. (2010, January). Propagation of colloidal dispersion gels (CDG) in laboratory corefloods. In SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
64. Han, M., Alshehri, A. J., Krinis, D., Lyngra, S. (2014, April). State-of-the-art of in-depth fluid diversion technology: enhancing reservoir oil recovery by gel treatments. In SPE Saudi Arabia section technical symposium and exhibition. Society of Petroleum Engineers.
65. Liang, J. T., Sun, H., Seright, R. S. (1995). Why do gels reduce water permeability more than oil permeability?. SPE Reservoir Engineering, 10(04), 282-286.
66. Han, D., Yang, P., Luo, Y., et al. (1998, January). Flow mechanism investigation and field practice for low concentration flowing gel. In: SPE International Oil and Gas Conference and Exhibition in China. Society of Petroleum Engineers.
67. Coste, J. P., Liu, Y., Bai, B., et al. (2000, January). In-depth fluid diversion by pre-gelled particles. Laboratory study and pilot testing. In SPE/DOE improved oil recovery symposium. Society of Petroleum Engineers.
68. Dupuis, G., Bouillot, J., Templier, A., Zaitoun, A. (2015, November). Successful chemical water shut-off treatment in an omani field heavy-oil well. In Abu Dhabi International Petroleum Exhibition and Conference. Society of Petroleum Engineers.
69. Dupuis, G., Lesuffleur, T., Desbois, M., et al. (2016, March). Water conformance treatment using SMG microgels: a successful field case. In SPE EOR Conference at Oil and Gas West Asia. Society of Petroleum Engineers.
70. Zaitoun, A., Dupuis, G. (2017, June). Conformance control using SMG microgels: laboratory evaluation and first field results. In SPE Europec featured at 79th EAGE Conference and Exhibition. Society of Petroleum Engineers.
71. Bai, B., Huang, F., Liu, Y., et al. (2008, January). Case study on prefromed particle gel for in-depth fluid diversion. In SPE symposium on improved oil recovery. Society of Petroleum Engineers.
72. Ohms, D., McLeod, J. D., Graff, C. J., et al. (2010). Incremental-oil success from waterflood sweep improvement in Alaska. SPE Production & Operations, 25(03), 247-254.
73. Thrasher, D., Nottingham, D., Stechauner, B., et al. (2016, April). Waterflood Sweep Improvement at Prudhoe Bay, Alaska. In SPE Improved Oil Recovery Conference. Society of Petroleum Engineers.
74. Mustoni, J. L., Denyer, P., Norman, C. (2010, January). Deep conformance control by a novel thermally activated particle system to improve sweep efficiency in mature waterfloods of the San Jorge Basin. In SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
75. Paez Yanez, P. A., Mustoni, J. L., Frampton, H., et al. (2007, January). New attempt in improving sweep efficiency at the Mature Koluel Kaike and Piedra Clavada waterflooding projects of the S. Jorge Basin in Argentina. In Latin American & Caribbean Petroleum Engineering Conference. Society of Petroleum Engineers.
76. Roussennac, B. D., Toschi, C. (2010, January). Brightwater trial in Salema field (Campos Basin, Brazil). In SPE EUROPEC/EAGE annual conference and exhibition. Society of Petroleum Engineers.
77. Towns, M., Lara Angarita, M., Thrasher, D., et al. (2013, April). Enhancing oil recovery in the Gulf of Suez by deep conformance control using a thermally activated particle system. In North Africa Technical Conference and Exhibition. Society of Petroleum Engineers.
78. Choudhary, M., Parekh, B., Solis, H., et al. (2014, April). Reservoir in-depth waterflood conformance: an offshore pilot implementation. In SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
79. Thrasher, D. R., Denyer, P., Timchuk, A. S., et al. (2013, April). First application in Russia of Bright Water™ chemical for waterflood sweep improvement in the Samotlor field. In IOR 2013-17th European Symposium on Improved Oil Recovery. European Association of Geoscientists & Engineers.
80. Wang, W., Liu, Y., Gu, Y. (2003). Application of a novel polymer system in chemical enhanced oil recovery (EOR). Colloid and Polymer Science, 281(11), 1046-1054.
81. Diaz, D., Somaruga, C., Norman, C., Romero, J. L. (2008, January). Colloidal dispersion gels improve oil recovery in a heterogeneous Argentina waterflood. In SPE Symposium on Improved Oil Recovery. Society of Petroleum Engineers. 
82. Stupochenko V.E., Sorkin A.Ya., Kan V.A., et al. (2003). Results of application of alkaline polymer-suspension composition and its modifications on Western Siberia deposits. Oil Industry, 5, 90-92.

In this study, we describe the synthesis, characterization and evaluation of colloidal dispersion gels (CDGs) for use as in-situ fluid diversion in high-temperature and high-salinity oil reservoirs. The chemical stability of CDGs was improved by using polymer mixture to withstand harsh reservoir conditions. The CDGs were synthesized by free radical crosslinking polymerization using 2-acrylamido-2-methylpropane sulfonic acid (AMPS), Acrylic acid (AAc), partially hydrolyzed polyacrylamide (HPAM) and chromium triacetate crosslinker. The effect of crosslinker/polymer concentration, salinity, gelation time, rheological behavior, particle size distribution of CDGs, also their thermo-chemical stabilities and resistance/residual resistance factor were investigated. The use of the proposed compositions allows to increase the hydraulic resistance of the porous medium, which is observed in increasing the values of the resistance and residual resistance factor. Studies have shown the effectiveness of the use of these compositions to align the injectivity profile of injection wells.

Keywords: colloidal dispersion gels; injectivity profile; well; resistance factor; rheology.

References

1. Suleimanov, B. A. Ismailov, F. S., Veliyev, E. F., Dyshin, O. A. (2013). The influence of light metal nanoparticles on the strength of polymer gels used in oil industry. SOCAR Proceedings, 2, 24-28.
2. Suleimanov, B. A., Veliyev, E. F. (2017). Novel polymeric nanogel as diversion agent for enhanced oil recovery. Petroleum Science and Technology, 35(4), 319-326.
3. Suleimanov, B. A., Veliyev, E. F. (2016, November). Nanogels for deep reservoir conformance control. SPE182534-MS. In SPE Annual Caspian Technical Conference & Exhibition. Society of Petroleum Engineers.
4. Suleimanov, B. A., Ismaylov, F. S., Veliyev, E. F. (2014). On the metal nanoparticles effect on the strength of polymer gels based on carboxymethyl cellulose, applying at oil recovery. Oil Industry, 1, 86-88.
5. Suleimanov, B. A., Ismayilov, F. S., Dyshin, O. A., Veliyev, E. F. (2016). Selection methodology for screening evaluation of EOR methods. Petroleum Science and Technology, 34(10), 961-970.
6. Suleimanov, B. A., Ismailov, F. S., Dyshin O. A., Veliyev, E. F. (2016, October). Screening evaluation of EOR methods based on fuzzy logic and bayesian inference mechanisms. In SPE Russian Petroleum Technology Conference and Exhibition. Society of Petroleum Engineers.
7. Suleimanov, B. A., Guseynova, N. I., Veliyev, E. F. (2017, October). Control of displacement front uniformity by fractal dimensions. In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers.
8. Suleimanov, B. A., Veliyev, E. F., Dyshin, O. A. (2015). Effect of nanoparticles on the compressive strength of polymer gels used for enhanced oil recovery (EOR). Petroleum Science and Technology, 33(10), 1133-1140.
9. Suleimanov, B. A., Dyshin, O. A., Veliyev, E. F. (2016, October). Compressive strength of polymer nanogels used for enhanced oil recovery EOR. SPE-181960-MS. In SPE Russian Petroleum Technology Conference and Exhibition. Society of Petroleum Engineers.
10. Mack, J. C., Smith, J. E. (1994, April). In-depth colloidal dispersion gels improve oil recovery efficiency. SPE-27780-MS. In SPE /DOE Ninth Symposium on Improved Oil Recovery. Society of Petroleum Engineers.
11. Diaz, D., Somaruga, C., Norman, C., et al. (2008, April). Colloidal dispersion gels improve oil recovery in a heterogeneous Argentina waterflood. SPE-113320-MS. In SPE Symposium on Improved Oil Recovery. Society of Petroleum Engineers.
12. Skauge, T., Spildo, K., Skauge, A. (2010, April). Nanosized particles for EOR. SPE-129933-MS. In SPE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
13. Suleimanov, B. A., Veliyev, E. F., Azizagha, A. A. (2020). Colloidal dispersion nanogels for in-situ fluid diversion. Journal of Petroleum Science and Engineering, 193, 107411.
14. Fielding Jr., R. C., Gibbons, D. H., Legrand, F. P. (1994, April). In-depth drive fluid diversion using an evolution of colloidal dispersion gels and new bulk gels: an operational case history of north rainbow ranch unit. SPE-27773-MS. In SPE/DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
15. Muruaga, E., Flores, M., Norman, C., Romero, J. (2008, April). Combining bulk gels and colloidal dispersion gels for improved volumetric sweep efficiency in a mature waterflood. SPE-113334-MS. In SPE Symposium on Improved Oil Recovery. Society of Petroleum Engineers.
16. Spildo, K., Skauge, A., Aarra, M. G., et al. (2009, June). A new polymer application for north sea reservoirs. SPE113460-PA. In SPE Reservoir Evaluation & Engineering. Society of Petroleum Engineers.
17. Lu, X., Song, K., (2000, April). Performance and evaluation methods of colloidal dispersion gels in the daqing oil field. SPE-59466-MS. In SPE Asia Pacific Conference on Integrated Modeling for Asset Management. Society of Petroleum Engineers.
18. Smith, J. E., Lui, H., Guo, Z. D. (2000, June). Laboratory studies of in-depth colloidal dispersion gel technology for daqing oil field. SPE-62610-MS. In SPE/AAPG Western Regional Meeting. Society of Petroleum Engineers.
19. Spildo, K., Skauge, A., Aarra, M. G., et al. (2009, June). A new polymer application for north sea reservoirs. SPE113460-PA. In SPE Reservoir Evaluation & Engineering. Society of Petroleum Engineers.
20. Wang, D., Han, P., Shao, Z., et al. (2008, February). Sweep improvement options for the Daqing oil field. SPE99441-PA. In SPE Reservoir Evaluation & Engineering. Society of Petroleum Engineers.
21. Suleimanov, B. A. (1995). Filtration of disperse systems in a nonhomogeneous porous medium. Colloid Journal, 57(5), 704-707.
22. Salavatov, T. Sh., Suleimanov, B. A., Nuryaev, A. S. (2000). Selective isolation of hard formation waters influx in producing wells. Oil Industry, 12, 81-83.
23. Panakhov, G. M., Suleimanov, B. A. (1995). Specific features of the flow of suspensions and oii disperse systems. Colloid Journal, 57(3), 359-363.
24. Zou, B., McCool, C. S., Green, D.W., et al. (2000). Precipitation of chromium acetate solutions. SPE-65703-PA. SPE Journal, 5(3).
25. Jia, H., Pu, W. F., Zhao, J. Z., Jin, F.Y. (2010). Research on the gelation performance of low toxic PEI crosslinking PHPAM gel systems as water shutoff agents in low temperature reservoirs. Industrial & Engineering Chemistry Research, 49(20), 9618-9624.
26. Jia, H., Pu, W. F., Zhao, J. Z., Liao, R. (2011). Experimental investigation of the novel phenol− formaldehyde cross-linking hpam gel system: based on the secondary cross-linking method of organic cross-linkers and its gelation performance study after flowing through porous media. Energy Fuels, 25(2), 727-736.
27. Broseta, D., Marquer, O., Blin, N., et al. (2000, April). Rheological screening of low-molecular-weight polyacrylamide/chromium(III) acetate water shutoff gels paper. SPE-59319-MS. In SPE/DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
28. Marty, L., Green, D.W., Willhite, G.P. (1991, May). The effect of flow rate on the in-situ gelation of a chrome/redox/ polyacrylamide system. SPE-18504-PA. In SPE Reservoir Engineering. Society of Petroleum Engineers.
29. Moffit, P.D., Moradi-Araghi, A., Ahmed, I., et al. (1996, March). Development and field testing of a new low toxicity polymer crosslinking system. SPE-35173-MS. In Permian Basin Oil and Gas Recovery Conference. Society of Petroleum Engineers.
30. Natarajan, D., McCool, C. S., Green, D.W., et al. (1999, April). Control of in-situ gelation time for HPAAM-chromium acetate systems. SPE-39696-MS. In SPE/DOE Improved Oil Recovery Symposium. Society of Petroleum Engineers.
31. Sigale, K., Omari, A. (1997). Aspects of crosslinking sulfonated polyacrylamides from rheological studies on their gels. Journal of Applied Polymer Science, 64, 1067-1072.
32. Jia, H., Zhao, J. Z., Jin, F.Y, et al. (2012). New insights into the gelation behavior of polyethyleneimine cross-linking partially hydrolyzed polyacrylamide gels. Industrial & Engineering Chemistry Research, 51(38), 12155-12166.
33. Rashidi, M., Blokhus, A. M., Skauge, A. (2010). Viscosity study of salt tolerant polymers. Journal of Applied Polymer Science, 117, 1551-1557.
34. Shin, S., Cho, Y. (1998). The effect of thermal degradation on the non-newtonian viscosity of an aqueous polyacrylamide solution. KSME International Journal, 12, 267–273.
35. Ranganathan, R., Lewis, R., McCool, C. S., et al. (1998). Experimental study of the gelation behavior of a polyacrylamide/aluminum citrate colloidal-dispersion gel system. SPE-52503-PA. SPE Journal, 3(4).
36. Bjorsvik, M., Hoiland, H., Skauge, A. (2008). Formation of colloidal dispersion gels from aqueous polyacrylamide solutions. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 317(1-3), 504–511.
37. Al-Assi, A. A., Willhite, G. P., Green, D. W., McCool, C. S. (2009). Formation and propagation of gel aggregates using partially hydrolyzed polyacrylamide and aluminum citrate. SPE-100049-PA. SPE Journal, 14(3).
38. Ward, J. S., David, M. F. (1981). Prediction of viscosity for partially hydrolyzed polyacrylamide solutions in the presence of calcium and magnesium ions. SPE-8978-PA. SPE Journal, 21(5).
39. Moradi-Araghi, A., Cleveland, D. H., Jones, W.W. Westerman, I. J. (1987, February). Development and evaluation of EOR polymers suitable for hostile environments: II-copolymers of acrylamide and sodium AMPS. SPE-16273- MS. In SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers.
40. Seright, R. S. (1980). The effects of mechanical degradation and viscoelastic behavior on injectivity of polyacrylamide solutions. SPE-9297-PA. SPE Journal, 23(3).
41. Spildo, K., Skauge, A., Skauge, T. (2010, April). Propagation of colloidal dispersion gels (CDG) in laboratory corefloods. In Proceedings of the SPE Improved Oil Recovery Symposium.
42. Seright, R. S. (1994). Propagation of an aluminum citrate-HPAM colloidal dispersion gel through Berea sandstone. Report No. PRRC 9429; New Mexico Petroleum Recovery Research Institute, New Mexico Institute of Mining and Technology: Socorro, NM.
43. Scoggins, M.W., Miller, J.W. (1979). Determination of water-soluble polymers containing primary amide groups using the starchtriiodide method. SPE-7664-PA. SPE Journal, 19(3).
44. Veliyev, E. F., Aliyev, A. A., Guliyev, V. V., Naghiyeva, N. V. (2019, October). Water shutoff using crosslinked polymer gels. SPE-198351-MS. In SPE Annual Caspian Technical Conference. Society of Petroleum Engineers.
45. Yadav, U. S., Mahto, V. (2013). Investigating the effect of several parameters on the gelation behavior of partially hydrolyzed polyacrylamide–hexamine–hydroquinone gels. Industrial & Engineering Chemistry Research, 52(28), 9532-9537.
46. Lockhart, T.P. (1994, April). Chemical properties of chromium/polyacrylamide gels. SPE-20998-PA, In SPE Advanced Technology Series. Society of Petroleum Engineers.

Article is devoted an actual problem of intensifying hydrocarbon extraction of through the use of wave technologies affecting on productive layers. The condition of wave action methods and means in the development of fields with hard-to-recover oil is given, their application features are revealed. The review was conducted in the field of researches of elastic wave influence on proceeding processes occurring in porous media and fluids contained in the rock. The special attention is given the integrated technology which consists in combining traditional enhanced oil recovery methods and wave action on the reservoir. Field test data and results of scientific and technical researches underline prospect of using wave technologies in the development of hydrocarbon fields.

Keywords: oil; wave action; emitter; well; frequency; elastic waves.

References

1. Gataullin, R.N. (2018). The state of heavy oil and natural bitumens fields development. Bulletin of the Technological University, 21(10), 71-82.
2. Muslimov, R.H. (2014). Oil recovery: past, present, future. Kazan: Fen.
3. Vakhitov, G.G., Simkin, E.M. (1985). Use of physical fields in oil recovery. Moscow: Nedra.
4. Duhon, R.D., Campbell, J.M. (1965, November). The effect of ultrasonic energy on flow through porous media. Paper SPE-1316-MS. In: SPE Eastern Regional Meeting. Society of Petroleum Engineers.
5. Hamida, T., Babadagli, T. (2005, April). Effect of ultrasonic waves on the capillary-imbibition recovery of oil. Paper SPE-92124-MS. In: Asia Pacific Oil and Gas Conference and Exhibition. Society of Petroleum Engineers.
6. Ivanov, B.N., Guryanov, A.I., Gumerov, A.M. (2009). Wave processes and oil production and preparation technologies. Kazan: «Fen».
7. Zaitsev, Y.V., Balakirev, Y.A. (1986). Oil and gas well operation technology and techniques. Moscow: Nedra.
8. Abramov, V. O., Mullakaev, M. S., Abramova, A. V., etc. (2013). Ultrasonic technology for enhanced oil recovery from failing oil wells and the equipment for its implementation. Ultrasonics Sonochemistry, 20(5), 1289-1295.
9. Gharabi, R. (2005). Application of an expert system to optimize reservoir performance. Petroleum Science and Engineering, 49, 261-273.
10. Mufazalov, R.S., Muslimov, R.H., Mufazalov, R.S. i dr. (2005). Gidroakusticheskaya tekhnika i tekhnologiya dlya bureniya i vskrytiya produktivnogo gorizonta. Kazan: Dom pechati.
11. Mufazalov, R.S. (2013). Vozrastayushchaya rol' innovatsionnykh tekhnologiy povysheniya effektivnosti ekspluatatsii na pozdney stadii razrabotki mestorozhdeniy. Materialy Mezhdunarodnoy nauchno-prakticheskoy konferentsii «Problemy effektivnosti razrabotki neftyanykh mestorozhdeniy na pozdney stadii». Kazan: Izd-vo «Fen» AN RT, 280-283.
12. Mullakaev, M.S., Abramov, V.O., Abramova, A.V. (2015). Development of ultrasonic equipment and technology for well stimulation and enhanced oil recovery. Petroleum Science and Engineering, 125, 201–208.
13. Abramov, V.O., Mullakaev, M.S., Bayazitov, V.M. (2013). Experience of using ultrasound technology to restore productivity of oil wells in West Siberia and Samara region. Oilfield Engineering, 6, 26-31.
14. Kostrov, S., Wooden, W. (2005). In situ seismic stimulation shows promise for revitalizing mature fields. Oil & Gas Journal, 103, 43-49.
15. Bazhaluk, Y.M., Karpash, O.M., Klymyshyn, Y.D., et al. (2012). Oil production increase due to formation stimulation with the help of mechanical oscillations train. Oil and Gas Business, 3, 185–198.
16. Abdukamalov, O.A., Serebryakova, L.N., Tastemirov, A.R. (2017). Experience of shock action for bottomhole zone treatment of injection wells in the fields of Western Kazakhstan. SOCAR Proceedings, 1, 62-69.
17. Yushin, E.S. (2018). Prospects for the development of the implosion method and technical means for impactdepressive effects on the bottomhole formation zone. Oil and gas Territory (Territorija «Neftegas»), 7-8, 76-80.
18. Silkov, R.A. (2012). The use of power of shock waves in the technical methods and tools for enhancing reservoir recovery. Litiyo i Metallurgiya (Foundry Production and Metallurgy), 3, 295-299.
19. Mokhov, M.A., Sakharov, V.A., Khabibullin, H.H. (2004). Vibration and vibroseis impact on oil reservoirs. Oilfield Engineering, 4, 24-28.
20. Akhundov, R.I. (2009). Field research into vibration effect on the wells near-bottom zone in Azerbaijan offshore oil fields. Oilfield Engineering, 5, 29-32.
21. Faizullin, I.S., Dyakonov, B.P., Khisamov, R.S., i dr. (2006). O tekhnologii seysmoakusticheskogo vozdeystviya na obvodnennyye neftyanyye plasty. Seismic Technologies, 3, 86-89.
22. Nikolayevskiy, V.N., Stepanova, G.S., Nenartovich, T.L., Yagodov, G.N. (2006). The ultrasound determines an oil withdrawal at vibroseis bed stimulation. Oil Industry, 1, 48-50.
23. Hamidi, H., Mohammadian, E., Junin, R., et al. (2014). A technique for evaluating the oil/heavy-oil viscosity changes under ultrasound in a simulated porous medium. Ultrasonics, 54, 655-662.
24. Dollah, A., Rashid, Z.Z., Othman, N.H., et al. (2018). Effects of ultrasonic waves during waterflooding for enhanced oil recovery. International Journal of Engineering & Technology, 7, 232-236.
25. Volkova, G.I., Anufriev, R.V., Yudin, N.V. (2016). Effect of ultrasonic treatment on the composition and properties of waxy high-resin oil. Petroleum Chemistry, 56, 683–689.
26. Poesio, P., Ooms, G., Barake, S., Bas, V.D. (2002). An investigation of the influence of acoustic waves on the liquid flow through a porous material. Journal of Acoustical Society of America, 111, 2019-2025.
27. Khan, N., Pu, C., Li, X., et al. (2017). Permeability recovery of damaged water sensitive core using ultrasonic waves. Ultrasonics Sonochemistry, 38, 381-389.
28. Hamidi, H., Rafati, R., Junin, R., Manan, M.A. (2012). A role of ultrasonic frequency and power on oil mobilization in underground petroleum reservoirs. Journal of Petroleum Exploration and Production Technology, 2, 29–36.
29. Alhomadhi, E., Amro, M., Almobarky, M. (2014). Experimental application of ultrasound waves to improved oil recovery during waterflooding. Journal of King Saud University - Engineering Sciences, 26, 103-110.
30. Keshavarzi, B., Karimi, R., Najafi, I., et al. (2014). Investigating the role of ultrasonic wave on two-phase relative permeability in a free gravity drainage process. Scientia Iranica, Transaction C: Chemistry & Chemical Engineering, 21, 763-771.
31. Arabzadeh, H., Amani, M. (2017). Application of a novel ultrasonic technology to improve oil recovery with an environmental viewpoint. Journal of Petroleum & Environmental Biotechnology, 8(2). 1000323.
32. Dehshibi, R.R., Mohebbi, A., Riazi, M., Niakousari, M. (2018). Experimental investigation on the effect of ultrasonic waves on reducing asphaltene deposition and improving oil recovery under temperature control. Ultrasonics Sonochemistry, 45, 204–212.
33. Agia, A., Junin, R., Chonga, A. S. (2018). Intermittent ultrasonic wave to improve oil recovery. Journal of Petroleum Science and Engineering, 166, 577–591.
34. Perez-Arancibia, C., Godoy, E., Duran, M. (2018). Modeling and simulation of an acoustic well stimulation method. Wave Motion, 77, 224-228.
35. Abbasov, E.M., Agaeva, N.A. (2014). Propagation of the constructed of pressure waves in fluid with the account dynamic connection of system the well-formation. SOCAR Proceedings, 1, 77-84.
36. Abbasov, E. M., Agaeva, N. A. (2012). Influence of vibrowave action on the character of pressure distribution in a bed. Journal of Engineering Physics and Thermophysics, 85(6), 1189-1195.
37. Gataullin, R.N., Kravtsov, Y.I., Marfin, E.A. (2013). Intensification the process of hard to recover hydrocarbons reserves extraction by integrated heat-wave influence on layer. Oil Industry, 1, 90-93.
38. Marfin, E.A., Kravtsov, Y.I., Abdrashitov, A.A., et al. (2015). Elastic-wave effect on oil production by in situ combustion: field results. Petroleum Science and Technology, 33(15-16), 1526-1532.
39. Marfin, E.A., Kravtsov, Y.I., Abdrashitov, A.A., Gataullin, R.N. (2014). Field tests of wave action on oil production in the Pervomaysky field. Georesources, 2(57), 14-16.
40. Butler, R.M. (1998). SAGD Comes of AGE. Journal of Canadian Petroleum Technology, 37(7), 9-12.
41. Guo, T., Wang, J., Gates, I. (2018). Pad-scale control improves SAGD performance. Petroleum, 4(3), 318-328.
42. Gataullin, R.N., Galimzyanova, A. R. (2015). Definition the length of horizontal well for the integrated bed stimulation. Oil and Gas Technologies, 4, 44-48.
43. Gataullin, R.N., Marfin, E.A. (2017). Study of wave field in a well casing string. Oil and Gas Technologies, 1, 49-54.

Analyzed suitability of surface-active substances for micellar-polymer technology (ASP-technology) for enhanced oil recovery through the experimental measurement of the surfactant micelles size in water and hydrocarbon solutions and theoretical calculation of the critical packing parameter, which determines the micelles shape of surfactant molecules. It was established that the reagent for ASP-technology must necessarily include a surfactant, whose molecules are able to be in aqueous and hydrocarbon solutions in the form of vesicles with a size of 100-200 nm. Additional surfactants and co-surfactants in the reagent′s composition for ASP-technology are necessary to ensure that all components of this reagent in the formation water and at the reservoir temperature are mainly in the form of vesicles. It was shown that the calculations of theoretical packing parameter allow us to predict the surfactant suitability for ASP- technology, and measuring the dimensions of surfactant micelles in solutions allows us quickly find the optimum composition of their mixtures. The advantage of the developed methodology and possible way of reducing the cost of ASP-technology it was demonstrated by the example of a mixture of internal olefin sulfonate and nonionic surfactant.

Keywords: ASP-technology; EOR; micro emulsions; phase states of the oil-water system; surfactant.

References

1. Altunina, L. K., Kuvshinov, V. A. (1995). Increasing oil recovery by surfactant compositions. Novosibirsk: Science. Siberian publishing company RAS.
2. Surguchev, M. L. (1985). Secondary and tertiary methods of increasing oil recovery. Moscow: Nedra.
3. Surguchev, M. L., Gorbunov, T. A., Zabrodin, D. P., et al. Methods of residual oil recovery. Moscow: Nedra.
4. Mustafayev, M. K., Kaiyrzhan, E. K. (2017). Laboratory and experimental studies of the effect of temperature of the working agent on the displacement coefficient of high-viscosity in the conditions of the «Karazhanbas» oil field. SOCAR Proceedings, 4, 66-73.
5. Gasimli, А. М., Rzayeva, S. C., Quluzadeh, Y. M., Hasanov, А. Q. (2012). The development new composition for the purpose of production of residual oil from flooded strata. SOCAR Proceedings, 1, 25-29.
6. Sharipov, R. R., Coyedjo, A. A., Quagu, J. M., et al. (2017). Development of reagents for enhanced oil recovery of high-temperature formations. SOCAR Proceedings, 2, 62-67.
7. Suleimanov, B. A., Latifov, Y. A., Ibrahimov, K. M., Guseinova, N. I. (2017). Field testing results of enhanced oil recovery technologies using thermoactive polymer compositions. SOCAR Proceedings, 3, 17-31.
8. Hirasaki, G. J., Miller, C. A., Puerto, M. (2011). Recent advances in surfactant EOR. Houston: Rice University.
9. Wu, Z., Yang, Z., Cao, L., Wang, G. (2016). Study on performance of surfactant-polymer system in deep reservoir. SOCAR Proceedings, 1, 34-41.
10. Lake, L. W., Johns, R., Rossen, B., Pope, G. (2015). Fundamentals of enhanced oil recovery. Houston, TX: Society of Petroleum Engineers.
11. Flaaten, B. S., Nguyen, Q. P., Pope, G. A. (2007). Experimental study of microemulsion characterization and optimization in enhanced oil recovery: a design approach for reservoirs with high salinity and hardness. UT Electronic Theses and Dissertations.
12. Gao, S., Gao, Q. (2010, April). Recent progress and evaluation of ASP-flooding for EOR in Daqing Oil Field. Paper SPE-127714-MS. In SPE EOR Conference at Oil & Gas West Asia. Society of Petroleum Engineers.
13. Salager, J. L., Bourrel, M., Schechter, R. S., Wade, W. H. (1979). Mixing rules for optimum phase-behavior formulations of surfactant oil water systems. Paper SPE7584-PA. SPE Journal, 19(5), 271-278.
14. Winsor, P. A. (1954). Solvent properties of amphiphilic compounds. London: Butterworths.
15. Huh, C. (1979). Interfacial tensions and solubilizing ability of a microemulsion phase the coexists with oil and brine. Journal of Colloid and Interface Science, 71(2), 408-426.
16. Buijse, M. A., Prelicz, R. M., Barnes, J. R., Cosmo, C. (2010, April). Application of internal olefin sulfonates and other surfactants to EOR. Part 2: The design and execution of an ASP field test. Paper SPE-129769-MS. In SPE Improved Oil Recovery Symposium.
17. Dijk, H., Buijse, M. A., Nieuwerf, D. J., et al. (2011, October) Salym chemical EOR project, integration leads the way to success. Paper SPE-136328-MS. In SPE Russian Oil and Gas Conference and Exhibition. Society of Petroleum Engineers.
18. Lange, K. R. (2005). Surface-active substances. Synthesis, properties, analysis and application. St. Petersburg: Profession.
19. Holmberg, K., Jonsson, B., Kromberg, B., Lindman, B. (2002). Surfactans and polumers in aqueous solution. John Wiley&Sons, Ltd.
20. Semikhina, L. P., Andreev, O. V., Shtykov, S. V., Karelin, E. A. (2015). Optimization of the reagent composition for ASP-technology of enhanced oil recovery by the size of its associates in solution. Izvestiya Vysshikh Uchebnykh Zavedenij. Oil and Gas, 5, 114-118.
21. Semikhina, L. P., Shtykov, S. V., Karelin, E. A. (2015). Selection of reagents for ASP-technology to enhance oil recovery. Oil and Gas, 4, 53-71.

The article deals with the major turnaround of offshore process facilities as in the case of a Booster Station No.2 on SKS-2, located at the Oil Rocks field, the service life of which has come to an end and metal pipes are subject to severe corrosion. The technological and economic feasibility of using «steel plate» design during the major turnaround of metal support piles made of highly corroded metal pipes are considered in the article. It is mentioned that, despite the drastic  reduction in the durability of metal structures due to corrosion in the splash zone, the service life of these structures can be extended by another 25 years through application of enhanced «steel plate» design. For the first time, it is proposed to use an advanced design «steel plate» for workover of pier platforms, offshore oil-derricks, in particular, pile supports made of metal pipes and offshore piers where technological facilities are located.

Keywords: processing facilities; pier; pier platform; hydraulic engineering installations; steel plate.

References

1. RD 31.35.13-90 «Ukazaniya po remontu gidrotekhnicheskih sooruzhenij na morskom transporte».
2. Pavlov, P. A., Parshin, L. K., Melnikov, B. E., Sherstnev, V. A. (2003). Strength of materials. St. Petersburg: Publishing House «Lan».
3. Sukhanov A.A. (2016) Engineering calculations of bolt connections. In: Evgrafov A. (eds) Advances in Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Cham.
4. Birger, I. A., Shorr, B. F., Iosilevichб G. B. (1979). Calculation of the strength of maschines components. Moscow: Mashinostroenie.

Improved design of above-bit ejection system is proposed, which in comparison with known jet pumps of injection and injection-suction type makes it possible to realize simultaneous increase of flushing liquid flow rate in bottomhole circulation circuit and reduction of differential pressure at well bottom. Mathematical model of proposed ejection system is developed in the form of equations of characteristics of jet pump and its hydraulic system. The equations linking characteristics of both jet pumps are obtained using the electroanalogies method. By joint solution of obtained equations optimal ratios of design and mode parameters ensuring maximum efficiency of well ejection arrangement are determined. Improvement of the mechanism of power supply to the bottomhole in the design of the above-bottom ejection system makes it possible to preserve natural collector properties of the bottomhole zone and increase the oil recovery factor of the deposit due to reduction of pressure in the well and reduction of time of primary opening of the productive horizon.

Keywords: above-bit ejection system; jet pump; bottomhole circulation circuit; distribution of flows in bottomhole zone; operating point of pump.

References

1. Liknes, F. (2013). Jet Pump. Trondheim: Norwegian University of Science and Engineering.
2. Zhu, H.-Y., Liu, Q.-Y. (2015). Pressure drawdown mechanism and design principle of jet pump bit. Scientia Jranica B, 22(3), 792-803.
3. Panevnik, A.V., Kontsur, I.F., Panevnik, D.A. (2018). Determination of operating parameters of near-bit ejector assembly. Oil industry, 3, 70-73.
4. Zhu, H.-Y., Liu, Q.-Y., Wang, T. (2014). Reducing the bottom – hole differential pressure by vortex and hydraulic jet methods. Journal of Vibroengineering, 16(8), 2224-2249.
5. Chen, X., Gao, D., Guo, B. (2016). A method for optimizing jet-mill-bit hydraulics in horizontal drilling. SPE Journal, 22(4), 416-422.
6. Osipov, P. F., Logachev, YU. L. (2004). Vozmozhnosti umen'sheniya differencial'nogo davleniya v skvazhine bez snizheniya plotnosti burovogo rastvora. Burenie i neft', 9, 16-18.
7. Cholet, H., Crausse, R. (1978, October). Improved hydraulics for rock bits. In: 53rd Annual Fall Technical Conference and Exhibition of the Society of Petroleum Engineers of AJME. Houston, USA.
8. Velychkovych, A.S., Panevnyk, D.O. (2017). Study of the stress state of the downhole jet pump housing. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 5, 50-55.

This article focuses on current issues of protecting the environment from the negative impact of oil industry enterprises. The results of the analysis of the biological treatment of soils contaminated with heavy oil are presented in the research. The treatment was made using consortium of indigenous oil-degrading bacteria (IODB). It is shown that the use of the IODB consortium provides a high degree of bio-treatment of oil-contaminated soils. An analysis of the fractional composition of the original and biodegraded oil showed that IODBs can use not only alkanes, naphthenes and aromatic compounds, but also heavier fractions, such as resins and asphaltenes, as a source of carbon and energy.

Keywords: heavy oil; biotransformation; microbiological composition; indigenous oil-degrading dacteria; resins;  asphaltenes; aromatic and polyaromatic compounds.

References

1. Lipaev, A. A., Yanguzarova, A. Z. (2007). Development of deposits of natural bitumen. Almetyevsk: AGNI.
2. Yagafarova, G. G., Akchurina, L. R., Fedorova, Y. A., et al. Enhancing of the effectiveness of remediation of petropolluted soil. Bashkir Chemistry Journal, 18(2), 72-74.
3. Yagafarova, G. G., Leonteva, S. V., Fedorova, Yu. A., Safarov, A. H. (2015). Microbial transformation of ecotoxicants. Ufa: UGNTU.
4. Yagafarova, G. G., Fedorova, Yu. A., Akchurina, L. R., et al. (2012). Remediation polluted by highmineralized oilfield sewage. Oil and Gas Business, 10(2), 137-139.
5. Yagafarova, G. G., Mazitova, A. K., Leonteva, S. V., et al. (2016). Вioremediation of heavy oil contaminated soils. SOCAR Proceedings, 3, 75 – 80.
6. Yagafarova, G. G., Leontyeva, S. V., Grosberg, Ya. I., et al. (2010). The method of oil-contaminated soils cleaning by utilization of indigenous oiloxidizing microorganisms. Ecology and Industry of Russia, 12, 20-21.
7. Jagafarova, G. G., Golovtsov, M. V., Leonteva, S. V., et al. (2007). Method of shedding and activating consortium of native oil and mineral oil decomposing microorganisms. RU Patent 2352630.
8. Gerhardt, H. (1983). Manual of methods for general bacteriology. Moscow: Mir.
9. PND FT 14.1:2:3:4.2-98. (1998). Metodika opredeleniya toksichnosti vodi po hemotoksicheskoy reaktsii infuzoriy. GK RF po ohrane okruzhayuschey sredi. Sankt-Peterburg: AOZT «Spektr-M».
10. Jagafarova, G. G., Il'ina, E. G., Leont'eva, S. V., et al. (2005). Method of oil sludge purufication from oil and oil products. RU Patent 2332362

Restoration of the environment is a key priority for the Government of Azerbaijan, together with all areas of social and economic life of the country. At present as well as in all other areas SOCAR and BP keep constantly the spotlight on environmental protection as a global issue and is cooperating with each other since 2008 in gas flaring reduction in frame of the World Bank's GGFR partnership. In 2011 with the purpose of gas flaring reduction In terms of this partnership Joint Working Group between SOCAR and BP was composed of and a number of actions in direction of flaring reduction have been implemented in ACG field by this Group. As an initial flaring value for baseline scenario of the project was taken an average value of 4% of associated gas flared in 2010-2011. In 2012 in the framework of the mentioned project, it was developed an improvement plan aimed to reduce flaring gas volume. As a result of the implementation of the plan, the volume of the flared gas was reduced from 4% (baseline scenario) to 2 %. In 2019 it was achieved 0.9%. This project resulted in gas flaring reduction, low-pressure gas gathering, and transportation through existing infrastructure, delivering gas to consumers, efficient use of the energy resources and improvement of consumers’ access to energy.

Keywords: project; partnership; environmental; associated gas; gas flaring reduction.

References