Features of the geological structure of pre-Jurassic formations of Sporyshevskaya area and sedimentary cover are given. Three seismic complexes are identified. Their characteristic is given. The ranking of wells of main fields in Western Siberia by the accumulated oil recovery is carried out. The prospectivity of development of marine Devonian-Lower Carbonian sediments of the barrier reef facies is established.

The questions of a more careful approach to the interpretation of 3D seismic survey materials, right up to revision of previously accepted model of the geological structure of productive objects, taking into account the newly received data during the development drilling within the Southern Section of the Priobskoye field, are considered.

Paleotectonic reconstruction technique for prediction of oil accumulation areas in the Upper Jurassic strata at the Ety-Purovskoye field is considered. As a result of the executed research hydrocarbon traps are selected. Reliability of the methodology of perspective objects selection is confirmed by the data of exploration and appraisal drilling, industrial oil inflows were received from the Yu1  layer at the sites, proposed to prospecting.

The concept of development of innovative technologies is considered. Fields development monitoring oriented activities are executed. The main technical and economic indexes of the scheduled repair and insulation works are given. Some results of the introduction of innovative technologies are presented. 

The microstructure analysis of pre-oriented in space core sections is executed. Two general directions of filtration and fluid migration of hydrocarbons, associated with the secondary and intergrain porosity, are established. The detailed geological and filtration model, which formed the basis for the analysis of the applicability of the complex of the secondary (hydrodynamic) and tertiary (physical) methods of an oil recovery increase, is constructed. 

Paper presents reservoir development control system on base of results of long term rate and pressure measurements in wells during production decline («decline analysis»). Pressure measurements are made by permanent bottomhole gages placed under pumps near perforation interval. Authors present technological items of data gathering technology, ways of data analysis, reliability of data interpretation and results of interpretation usage as information basis for reservoir modeling and production optimization.

This paper aims to summarize formation fluid types based on key expert appraisals, from field data generated by initial exploration and production experience. Typical fluid attributes are illustrated by oil and gas case studies using combined analysis of field tests and measurements along with research data and lab experiments.

A new express method aimed to evaluate the necessity and order of converting existing wells into injection is proposed. The calculated time required to compensate oil production loss due to well conversion by oil production increase from a nearly wells as a result of water injection is used as a ranking criterion. The method is adapted to the development of reservoirs without an active aquifer and could be widely applied to the oil fields under high rate of drilling. The results of the method application were compared with reservoir simulation data and showed high level of convergence, that proves the efficiency of the technique proposed.

It is established, that destructed guar gel (polysaccharide) consisting of liquid waste, obtained during hydrofracturing from the industrial wastes landfill of the Southern section of the Priobskoye field, enters the reservoir pressure maintenance system. Based on data on the ion composition of water, entering from various sources at the group pumping station, and the calculations of their stability, it is concluded, that the guar gel prevents the precipitation of calcium carbonate in the bottom water. As a result, despite the high saturation index for calcite in the oil gathering mains and in the equipment of oil treatment unit, the calcite deposits are practically not observed. At the same time in the high-pressure conduits significant carbonate deposits are found, as the stabilizing effect of guar gel is absent here because of his failure in the pumps of group pumping station. 

The analysis of the dynamics of paleotectonic development of area, covering the eastern part of the Khanty-Mansi Autonomous Okrug, is executed. A set of isopach maps is drawn and analyzed, using a surface of the reference reflective seismic horizons A, B, and G, corresponding to the boundaries of the basic structural-formational megacomplexes of sedimentary cover and the surface of pre-Jurassic formations. The main stages in the formation of the topography of the eastern part of  Khanty-Mansi Autonomous Okrug and the basic regularities of oil and gas content are revealed. 

The causes of infringement of contact of a cement stone with boring casings are analysed. The question of determination of size of the clearance, arising in ring space at casing pressure testing, is considered. It is offered at estimation of the wells cementing quality with the method of cement-bond sonic logging to accept the limiting clearance size equal to 100 microns.