This article considers the problems of estimation of the structural model verification based on the results of the well horizontal section drilling. The method of estimation by standard criteria of the structure confirmation is presented as well as the procedure is described in which the section of the horizontal well is considered as population of data. Additionally a set of parameters is calculated which give a differentiated estimate and a quantitative expression for the degree of confirmation of the well horizontal section model.

In this article the object of researches covers the subsurface interpermafrost waters of Palaeogene deposits considered within the largest water intakes of the Tazovsk underground waters drainage basin. The authors present a comparative description of the hydrogeochemical setting of the water-bearing complexes, the analysis of the technogenic pollution «from above» which is directly related to the development and operation of fields of hydrocarbon raw materials, oil products storage, transportation and processing. Additionally, the problem of subsurface waters pollution «from below» during leakage of fluids through injectors and producers casing strings resulted from not always proper quality cementing. The correlation dependences of some components are presented in the paper.

One of the most dangerous and widespread events in Russia is the process of under flooding of urban areas. Only in the last ten years the flooded residential areas have doubled, and the process continues to develop rapidly. Tyumen is referred to those 1059 cities which suffer the consequences of this process. This article examines the factors affecting the condition of the groundwaters level, such as the lay of land, water-conducting properties and the aeration zone soils capacity.

The comparison of hydrogeochemical conditions of Jurassic-Cretaceous sediments of Koltogor- Tolkinskaya suture zone and the adjacent tectonic structures was based on the results of the chemical composition analysis of almost 1,500 groundwater samples. The average values of the overall salinity of subsurface water and their content of basic components of ion-salt and microcomponent composition were compared for Aptian-Albian-Senomanian, Neocomian and Jurassic aquifer complexes of Koltogorsky, Tolkinsky, Yuzhno-Tolkinsky megatroughs and Tagrinsky, Bakhilovsky, Alexandrovsky, Srednevasyugansky megaswells, as well as Nizhnevartovsky, Kaymysovsky arches. Using Sulin’s classification and cluster analysis the type of groundwater was characterized by the hydrogeochemical parameters set. It was defined that the suture zone presence does not directly affect the hydrogeochemical conditions of deep horizons of this zone and adjacent areas.

The paper describes the geological structure and oil and gas content in Nadym depression, which is almost entirely located over the oil-and-gas geological zoning in the oil and gas bearing area Yarudey of Frolovskaya petroleum bearing region. The generalization of the results of drilling, regional seismic exploration, core studies, well logging and well tests lead to identification of potential productive formations in the Jurassic-Cretaceous platform complex and in the Paleozoic basement. Some recommendations for further direction of exploration are proposed.

The paper analyzes the features of oil-bearing capacity and productivity of formation UV1 1 in the junction zone of the main deposit of Uryev and the central deposit of Las-Egan fields. Solving of tasks on additional exploration is considered at the expense of drilling the exploratory well 207P aimed at refining the boundaries of UV1 1 formation, estimation of the latter extractive characteristics and preparation of the site for production drilling.

The paper discusses the problems of oil and gas wells major repair, in particular, the emergency- restoration and fishing operations. The estimation of services rendered by service repair companies is made. The necessity to run supervising in the repaired wells in conjunction with increasing the responsibility of the service company for the quality of the repair before the «key-turn» well delivery to a customer is proved.

Currently, the most powerful and energy-intensive method of influence on the productive strata is water flooding. Due to certain economic factors, dictated by saving of capital costs on drilling of injection wells, a number of injection wells is much smaller than the development wells number. It is natural, that for full-value compensation of volumes of produced liquid from the development wells, taking into account losses, it is necessary to pump large volumes of water which can reach 1000-2500 m3 per day into a less number of injectors. Such conditions of water flooding lead to a need to create high pressure at the bottomhole and repression in the injection wells, which contributes the unfocused hydraulic fracturing. The results of the scientific research performed by S. I Grachev and A. S. Trofimov in a number of known fields using the method of tracer studying have shown that in all fields, where such studies were conducted, there observed the so-called channels with ultra-low hydraulic resistance, or with ultra-high conductivity/ permeability.

This paper describes the issues of well cementing quality, service life and types of repairs for restoration of failed leak tightness of casing strings and cementing. The analysis run for more than 100 wells in the Fedorovskaya area, the field Romashkinskoye, provided the data comparing the quality of casing strings cementing by conventional methods and cementing of wells where a profile shutoff device was used.

The authors consider the problem of operation of the West Siberia and Far East oil fields marginal producers with annular pressure taking into account the existing experience of operation of wells characterized by annular gas showings. They offer a new innovation technology solution on operation of such wells observing the fire and blowing safety requirements .

The problems arising when drilling horizontal and gently sloping wells in the Valanginian deposits are considered. The analysis of technologies of drilling-in the Valanginian reservoirs by sideholes using water-base clay drilling muds and the aerated muds ensuring the high-quality exposure of productive layers is carried out. The most perspective for drilling side holes of wells in these conditions are hydrocarbon-base drilling muds which maintain the filtration properties of productive layers and reduce the accident rate of drilling operations.

The methods of geophysical survey used for prevention of complications in terms of stability of well borehole when drilling are considered. It is shown that application of the borehole survey complex, including section gage logging, borehole acoustic TV (BAT), caliper measurement will enable to draw a conclusion about the direction, the size of changes of tension in rocks to identify the unstable intervals

The authors presented the approaches for a quantitative estimation of the additional resistance value of moving the pipeline in case of emergency on the collapsed wall of the borehole in absence of mud during the pipeline construction using the horizontal directional drilling method. In addition, the distribution and ratios of pressures, arising from the side of soil mass and drilling mud on the wellbore are found and shown to identify the potentially dangerous areas of the well arch collapse.

The article analyzes the results of tests of mechanical resistance of laboratory specimen coating applied by laser deposition. Based on the analysis a conclusion is drawn about the effect of protective coatings and their application methods on the friction coefficient and relative wear resistance.

The complex flows of viscous compressible heat-conducting gas arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the complete Navier-Stokes equations system to describe such gas flows it is advisable to use a cylindrical coordinate system. This paper describes a transformation of the second projection of the motion equation of the complete Navier-Stokes equations system. The result of this transformation is writing of the second projection of the equation of a continuous medium motion in the cylindrical coordinate system.

It is proved that for oil recovery enhancement it is necessary to use innovative methods. One of these methods is ASP. In the course of the work implementation there was determined a dependence of the surface tension factor at the boundary oil - ASP solution on the solution components concentration and temperatures for two surfactants. The analysis of the dependencies data permitted to define the optimum ASP solution concentrations at temperature close to the temperature in the bottom-hole zone of the oil-bearing bed. Besides, the economic calculations of the investigated surfactants were made based on which some recommendations were offered on their use.

The article presents a brief survey of possible consequences for health of the personnel involved in drilling of oil and gas wells which are related with insufficient illumination of working area. The specifics of drilling processes is described and a conclusion is drawn about how important today are researches aimed at defining and estimating the occupational risks, establishing the character of their affecting the personnel, and at development of measures on providing the production safety at well construction.

The article considers the most effective and environmentally friendly methods of utilization of associated petroleum gas (APG) for advanced oil and gas companies, as well as the developed method of utilization of associated gas using downhole steam-gas generator. The downhole steamgas generator burns APG at the bottomhole in the combustion chamber, and the combustion products - nitrogen and carbon dioxide - are supplied to the oil reservoir. A method for calculating the theoretical amount of air and combustion products is proposed.

In the article a description of the developed complex of equipment for measuring the temperature and flow rate of liquid used for testing the laboratory pattern of the borehole thermoelectric device is presented. The equipment complex consists of thermal meters, that register the temperature of working liquid and the surface of the laboratory pattern of the ultrasonic flow meter. «Dnepr’7» and the software. This complex can be used for laboratory studies where there is a need in measuring the temperature and flow rate of liquid separately or simultaneously.

The article describes the procedure of parametric diagnostics of gas pumping units with a turbine drive which enables to detect the unit state on the minimum information base with determination of the diagnostic conclusions probability. A two-level diagnostics is considered, namely by the units basic components (their injectors and gas turbine units, GTU) and by the GTU components (axial compressors, turbines and combustion chambers).

The article considers a vibrator of two-equalizer design used for pulsed liquid injection into a well. The versatility of this vibrator is the ability to provide a free delivery of geophysical instruments to the bottom of the well to be treated without pulling out the tubing string. Based on the mathematical expressions and taking into account the simulation results the basic expressions for determination of main parameters of the device operation are presented. Using a developed laboratory bench the tests of the pilot design have been run reproducing the downhole conditions. The comparison of the theoretical and laboratory results showed the error of no more than 16 %. Based on the results of bench tests the device optimal size was determined for achieving the expected effect at pulse injection of fluids into the well.

In the paper the issues of modeling of fractioning column run for obtaining a static model using the recursive MNK are considered. It is emphasized that the main difficulties in modeling were caused by the lack of information and uncertainty of a number of parameters due to underestimation of technological parameters such as ,the raw material composition, wear and corrosion of the column construction elements, etc.

This article considers the problems of drinking water electric treatment and additional cleaning in view of the offered treatment technology impact on health. A possibility is shown to use biotesting as an instrumental principle in the frame of classification of electrotreatment methods allowing a realization of functions of both control and feedback in the automatic systems of electric conditioning of water.

In the paper the most often used methods for elimination of burning gas blowouts in the wells of West Siberia are discussed. The recommendations are outlined for fires extinguishing depending on the power of the open gas blowout. It is suggested to perform the fire control using the method of the flare breaking-off from the wellhead without extinguishing it at placement of heat reflecting protection screens at the neighboring wells head.