During the last years laboratory investigations of productive properties of rocks have been limited to the determination of lithology, open porosity, permeability and mineralogical density, at the same time the structural features of cavitated space of reservoirs are not taken into consideration. The necessity for a detailed study of productivity of reservoirs with the determination of morphological features of cavitated space structure became apparent in the process of a complex laboratory investigation of the core sample from "Pridorozhnoye" field.

This article deals with the complex block structure of pay thickness in "Arman" oil-and-gas field. The new data on the field were analyzed by the author during active participation in the work on recalculation of initial reserves of oil and gas in Arman field. The deposition of Jurassic systems occurs on an erosional surface of middle Triassic and are presented with non-segmented Bajocian and Bathonian stages of Middle Jurassic. Lithologically -they consist of sandy and clay rocks. Sandstones are grey, dark-grey, polymiсtic. Clays are dark-grey, micaceous, and silty, with inclusions of plant residues. The main part of the field pay thickness is connected with these depositions. The thickness of Jurassic depositions unit is 490-520 m.

The main theoretical value of the article is the necessity to increase the reliability of determination of productivity of reservoirs in wells at the expense of obtaining reliable data about the state and the changes that occur in reservoirs during their operation. Recently, practically in all fields of Mangyshlak an increase of produced water has become evident, which complicates the reliability of determination of petrophysical parameters: factors of volume shaliness, effective porosity, and initial and current oil saturation.

The Kura inter-mountain trough is one of the regions of Azerbaijan which is the most prosective for drilling on small hydrocarbon reservoirs with complicated structures (non-anticlinal). A short description of the geological structure and oil-gas content of various regions are given in separat areas of the Kura depression. Analysis of existing data from drilling of the Kura depression areas showed that deposits in the most cases represent tectonic-shielding traps. The composite structure and the sharp lithofacial changeаbility of the tectonic traps creates dedicated for their searches. Explanation of the search on the basis of analysis of the new structure by seismology data in our opinion is not sufficient. It is necessary to perform paleotectonic research that amplify seismology results. Determination of structuration time, region progress character and comparison with conditions of generation and migration let to separate the perspective areas for arrangement of the prospect drilling and to finalise the location of the wildcat well. In connection with it suggested scheme of wildcat wells placement on the unknown and insufficiently to guarantee efficiency of the searching works.

One of the most general forms of environment control is an ecological monitoring i.e. monitoring of change of parameters of environment processes and phenomena. Within the framework of CIS there is an Interstate ecological council that designed the programs of work including: the design of interstate scientific and technical program of generation and development of ecological monitoring in the territory of member states of CIS; the forming of interstate ecological information system. The main direction of problem solving is the generation of automated systems of monitoring and management of environmental quality based on modern scientific achievements including information technology [1].

In the article the reliable determination of information collection which is used in oil and gas production modeling, it is proposed to apply a dynamic analysis of primary technological measures. Fundamental methodologies for evaluation of recovered volumes of hydrocarbons were introduced and applied during the analysis of results of laboratory experiments on displacement of oil from porous medium with water and by primary technological measures in the "Neft Dashlari" oilfield development. The approach developed permits the collection of reliable predicted values of recoverable volumes of hydrocarbons with consideration of transient processes in formation system and also to make reasoned decision in management and selection of strategy in oil and gas field development.

The Zhetybayskaya group consists of 13 satellite fields. They are "Asar", "Southern Zhetybay", "Eastern Zhetybay", "Burmasha", "Bekturly", "Ayrantakyr", Pridorozhnoye", "Alatyube", "Atambay-Sartyube", "Aşiagar", "Northern Karagiye", "Northern Akkar" and "Oymasha". The fields connected with Triassic depositions are the following: "Pridorozhnoye", "Alatyube", "Atambay-Sartyube", "Aşiagar", "Northern Karagiye" and "Northern Akkar". The most frequently met problems in these fields are:
• non-fulfillment of measures on methods of formation stimulation and bottom-hole zone
treatment (injection agent, pumping volumes, time of performance);
• reduction of projected oil recovery factor;
• combination of two and more development facilities;
• changes to procedures for commissioning and decommissioning wells.

One highly effective method of increase of oil recovery is microbiological bed stimulation. An advantage of this method is ecological safety, absence of capital expense and cheapness of the used reagents. It is based on the activation of life activity of bed microflora, and also microorganisms of injected bio reagents. In the "OilCasScient ificResearchProject" Institute SOCAR several kinds of microbiological stimulations are developed and introduced based on the use of culture fluids including (dairy) whey, an activated sludge, molasses and their compositions. In the article as an example of "Bibiheybat" oilfield the results of injection of bio compositions are shown, begun since 2003 and lasting until present time. Here, 2 facilities have been chosen for conducting of biotechnologies appropriate to the horizons V and X. The dynamics of oil output and water discharge were used for estimation of stimulation and also comparative analysis of samples obtained from producing well. The performance analysis of "Bibiheybat" oilfields has revealed that for all period sequentially 810 t of culture fluid have been injected and at the expense of the method 6331 t of oil have been produced. As a result technological efficiency has made 7.8 t/t that means – for each 1 ton of spent bio reagent 7.8 times more oil were produced. It indicates a success of the conducted process. In accordance with the criteria of applicability the method is recommended for large-scale use.

The practical necessity for use of intelligent well technologies has been previously discussed in literature. The concept of intelligent wells is not completely new for Azerbaijan, however it had not been widely applied until recent time. The construction of intelligent wells is mainly carried out in offshore fields operated by international consortium of oil companies within the Contract of the Century. An intelligent well is one which is equipped with downhole gauges, valves, etc, which allow making measurements of well performance indicators, as well as controlling the flow during well operation in case of injecting/producing from multilayer system in a real time
environment.

This paper reviews a dynamic model to describe oil production process, which accounts for the interaction between oil recovery, water cut and water injection volumes. It uses a dynamic model of oil production, and investigates the phenomena, which are manifested in abrupt changes in system behaviour. Results of the analysis can be considered during predicting key indicators of hydrocarbon production and during the selection of formation pressure support strategy in order to improve efficiency of hydrocarbon reservoir development. Analysis of the "Forties" oilfield has been carried out using the proposed mathematical model, which describes process of oil and water production. It has been demonstrated that the proposed model and the calculation method allow early prediction of transitional processes and by doing so create an opportunity toperform timely adjustments to the field development procedures. The results of these studies can be used in predicting the key indicators of oilfield development, and during the selection of formation pressure support strategy in order to improve the efficiency of hydrocarbon reservoirs’ development.

At present it is considered to be determined that oils of many Western Kazakhstan fields with a high content of high-molecular compounds have complex rheological parameters that are at a certain temperature interval characterized with a wide range of non-Newtonian properties. To one of the most characteristic fields of Western Kazakhstan with complex rheological properties of oils can be referred Uzen field aggravated with unfavorable properties of producing horizons reservoirs.

The solution of the fluid flow to the well in a creeping considering different creep kernels is examined in the paper. Through the calculations it is figured out that while solving such problems parameters characterizing the creepage of a reservoir for each individual case should be determined experimentally or by the solution of inverse problems.

Summarizing of results of theoretical and experimental researches allow to create the method of determination of basic parameters of gas flow with low quantity of liquid in offshore pipelines is presented. This method is based on improved method of Taital and Duckler and taking into account the interface friction factor. Besides, criterions for determination of flow pattern change from stratified to homogeneous and slug flow are presented. The method was tested on the design of the transportation system from the Shtokman gas condensate field to shore.

Key word: gas-liquid flow, multiphase flows, criterions of flow pattern change, low loads of liquid in gas, mechanistic model, interface friction factor, offshore pipelines

At present, Caspian Sea water is injected for reservoir pressure maintenance for oil production in Azerbaijan. There are different groups of bacteria, sulfate ions and organic matter in this water. This leads to corrosion and the destruction of oil-gas field equipment. The injection of bactericidal inhibitor in wells is used for protecting oil-gas field equipment from corrosion and microbiological wear in offshore conditions. Results of sulfonated and neutralized products of catalytic cracking of gasoil fraction are given in the article. These were investigated under both laboratory and field conditions. SNQF reagent is a mixture with properties of bactericidal inhibitor which efficiently resists anode and cathode reaction of steel. Also the SNGF reagent efficiency persists over 7 day later. Results of field testing and the availability of raw  actericidal inhibitor ensures recommending of the SNQF reagent for a wide range of application.

The article deals with the Real Time Geosteering technology for geonavigation of directional wells with a horizontal completion. The Real Time Geosteering (RTG) echnology is realized in the software of Paradigm Geolog Geosteer Company. The Geolog Geosteer package is safely integrated with the other Paradigm applications such as Sysdrill (wells planning package) and GOCAD (geological modeling environment). The basic principles to generate a geonavigational model are considered in the article. The examples of a practical application of geonavigation modeling and real-time geonavigation are given.

We describe measurement and interpretation of the force acting on a smooth hydrophilic glass particle during rapid (1 – 100 mms-1) approach to, and separation from, a hydrophilic glass plate in viscous concentrated aqueous sucrose solutions (0:001 Pas < η < 0.090 Pas). We find that the force is accurately described by Reynolds lubrication theory with a no-slip boundary condition, even at maximum strain rates of up to 250 000 s-1. Compared to earlier studies of hydrodynamic forces on small particles, we reduce the uncertainty in the absolute particle-plate separation by using an evanescent-wave measurement of the separation.