The article presents a principal geo-fluid model of groundwaters formation in the conditions of Elysion lithostatic system in the West Siberia megabasin. The model may be useful for understanding the process of underground waters formation in the petroleum horizons and for development of oil exploration hydrogeological criteria.

We consider a method of increasing the efficiency of field development through the use of high-resolution seismic building bulk maps at a scale of 1: 10,000 to isolate destruction subvertical zones that are potentially capable of producing a maximum increase in production when placing wells in these areas. Control test results showed high-resolution volumetric seismic confirmation of the results in 76% of cases. For maximum efficiency, the wiring holes at localized areas recommend the use of technology drilling geological support aimed at the most efficient collectors of penetration of the best quality. Control of the position of the barrel during drilling using the 3D geologic model allows tunneling in subvertical zones degradation.

At present the natural environment of the Yamal-Nenets oil and gas producing province is under a strong anthropogenic impact. The main source of drinking and household water supply in the area are fresh underground waters of the Eocene and Quaternary hydrogeological complex. These underground waters are experiencing the strongest negative impact. Under the influence of the anthropogenic impact the hydrogeological conditions change and groundwaters transformation and formation of technogenic ecological and hydrogeological systems take place. Therefore, study of the sources and processes of anthropogenic impacts is an important research task.

The article presents a description of the geological structure and oil content of the Bobrikovsky horizon of the oil accumulation zone Shivelevnaya in Orenburg region. The producing formation commercial value associated with the Bobrikovsky horizon, within which the oil deposits are recognized is considered.

Examine the influence of errors on nugget effect in the variogram in the process of three-dimensional geological modeling. Created experimental model that demonstrates this process. Proposed method of creation cubes of parameters, that consider of nugget effect and reducing the level of errors.

The results of detailed lithology-mineralogy studies and grain-size analysis of deposits from well No. 739 in the oil-and-gas condensate field Urengoy were generalized to investigate a degree of the Achimov deposits sandsilt rocks’ heritance of lithological and structural features of deposits of the shelf detritus material supply sources. This information is very important for reconstruction of the conditions of the Achimov reservoirs formation and for genetic interpretation of the lithology studies data.

On the example of one of the fields in the North of West Siberia the issues of assessment of gas hydrate resources are considered. Gas hydrates are one of the most perspective types of fuel and in the nearest future can come to replace the major gas fields in the territory of West Siberia. In this work an attempt was made to define the search characteristics allowing the identification of gas hydrates deposits and estimation of a real potential of this type of fuel production.

The authors analyze the dimensionless pressure and the inflow rate using Remi’s curves and other standard curves for determination of reservoir permeability and characteristics of the tested well damage and stimulation.

The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards . It is shown that the dynamometer cards of SRP measured during normal operation and in the poor inflow conditions enable to assess the fluid level in the annulus, a maximum fluid influx into the borehole and parameters of the reservoir.

Some mathematical models of the scheduled normalized dynamic characteristics of the process of oil and gas wells drilling were developed. These models practical application for assessment of the technological process power efficiency was examined. The identified models soft testing was performed.

This paper discusses the method for retrieving the stuck flexible pipe during an idle well recovery in the conditions of abnormally low reservoir pressures. The most common are methods with using a flexible pipe, which are mainly related to the downhole flushing off the clay-sand bridges, the hole hydrate-paraffin deposits thawing, treatment of the bottom-hole zone with chemical compositions. It is emphasized that no experience exists in retrieving the stuck flexible pipe from the breakdown well with a detached flexible pipe in it.

This paper describes the errors in determining the permeability and porosity of Cenomanian gas deposits. First of all, the authors emphasize the importance of reproducing the reservoir conditions as close as possible in the process of core analysis. According to the authors, if the experimental conditions do not closely imitate the in-situ conditions, then the applicable conversation factors or functions should be used. Using this approach in constructing the petrophysical relation-ships and at other stages of reserves estimation will reduce the uncertainty in determination of the gas reserves value. It is also noticed in the article that a number of factors forming the value of error in reservoir parameters in the areas of wells is inevitable. To improve the quality level of the development design it is necessary to take into account a degree of reliability of initial geological and production data.

The authors analyzed the process parameters of the formation acid hydraulic fracturing (FAHF) operations performing taking into account the additional production achieved. The analysis was based on a comparison of results of the laboratory study of the optimal rate of acid injection into the formation and actual field data on execution of the formation acid hydraulic fracturing based on interpretation of jobs execution mode schedules. The relationships between the jobs performance conditions and the results in the increase of additional production are proposed for optimization of the FAHF process.

The article briefly reviews the conduction of jobs aimed at intensification of influx and improvement of oil recovery of the layer VK in the field Krasnoleninskoye. The analysis is made of FHF technology to select the wells for FHF implementation in the development well stock under operation in the Em-Yogov area of the said field. Based on the structure of residual reserves a decision was made about the necessity to perform FHF in the low productive reservoirs.

The purpose of this paper is to analyze the power efficiency of oil well systems with sucker rod pumping units. For this study a chain-drive of HRC 80-6-02 type and a similar performance drive HRC 80-6-02 balancer pumping unit were selected. Based on the analysis of the data, a conclusion was made that the power consumption for production of oil using ESP units is much higher due to a low coefficient of performance (COP) and significant losses in the submerged electric-driven pump. The analysis showed that for a half cycle of operation, i.e. per one stroke, the power consumption by a jack-pump was 15-20% higher than that of the chain drive. It is concluded that the chain drive is superior in many aspects of sucker-rod pumping units operation and may be the most effective replacement for ESP units, as well as for units with walking-beam jack pumps.

An approach has been found for realization of the formation hydraulic fracturing operations in the zones of the injected waters front taking into consideration this front type. The effectiveness of FHF in the zones of the formation with a static water injection front is proved.

A method is offered for vertical wells indicator diagrams interpretation considering the combined effect of fractures closure in the area of depression cone and gas liberation due to the pressure decline below the saturation pressure. This method was tested on indicator diagrams of wells in the Riphean formation, the oil field Yurubcheno-Tokhomskoe. As a result of the diagrams processing the permeability decrease parameters were determined, as well as the initial values of absolute permeabilities were obtained. In addition, the actual curved indicator diagrams were reproduced in the hydrodynamic simulator.

In work the consistent inclusion of centrifugal force in the numerical calculations of three-dimensional gas-dynamic characteristics of the unsteady flow of compressible viscous heat-conducting gas in an upward swirling flow caused by the vertical cold blowing. Provides detailed conversion of the complete system of Navier-Stokes equations associated with consistent view of the centrifugal force. Results of thermodynamic calculations and comparisons, speed and power characteristics of emerging upward swirling flows. There was a slight influence of the centrifugal force on the basic parameters of the gas-dynamic study of complex flows of gas.

A method was proposed and a complex of studies were run to improve the effectiveness of high viscosity crude oil transport using the hydrodynamic cavitation method. A cavitator design with a slot cylinder was offered based on the design hydraulic and thermodynamic parameters simulation results. The cost effectiveness of the cavitation method introduction for treatment of high viscosity crude oils at heating stations during transport is proved.

The article describes the study of influence of cavitation and vortex impacts on the degree of protection of corrosion inhibitors applied.

Currently applied welding materials do not always meet the requirements towards cold resistance and resistance to brittle failure of welding joints metal. The existing practice of welding for ensuring the equal strength of a weld joint requires execution of additional weld joint strengthening. The optimization of the chemical composition and microalloying of the developed welding wire from rare-earth metals ensured obtaining a weld joint metal with a high level of strength and cold resistance properties, in particular at temperature of minus 60oC. The new welding method enabled to significantly reduce the weld reinforcement geometry and to obtain weld joints with improved quality characteristics.

The influence of the surface structure on the quality of chrome plating was studied. It was found that the quality of electrolytic plating depended on a difference in the thermo-e.m.f. value on the surface of the recovered part. A method was proposed for assessing the quality of the surface preparation prior to electroplating by measuring the thermal electromotive force.

The influence of heat treatment different options on wear resistance of steels of trademarks Kh12MFL and 150KhNML applied in manufacturing of mud pumps is reviewed. It is shown that the steel Kh12MFL is superior in wear resistance than the steel 150KhNML at abrasion. The martensite-carbide structure of both steels obtained at quenching at normal temperatures, from 900 to 1000 0С, ensures a good hardness (61-64 HRC). The analysis of the residual austenite contents influence on wear resistance was also made. It was determined that residual austenite formed after high temperature quenching (110-1170 0С) was metastable and had a tendency to transform into carbon containing martensite of deformation in the process abrasive wearing. This allowed steels to have a maximum wear resistance because of ensuring a high ability to frictional hardening of the working surface.

The article shows the abrasion-adhesion combination of wear-induced damage mechanisms in the vacuum ion-plasma coatings of friction surfaces acting in a wide range of contact conditions. A reduction of wear of hard-alloy cutting plates with application of vacuum-plasma nitride-zirconium microcoatings is explained by a change in the contact surfaces properties complex and by reduction in the sizes of abrasive particles with maintaining the protection properties after the coating damage.

The article described the relationships obtained to determine a number of working parameters of gas turbine engines for gas pumping aggregate. Their analysis and comparison of results calculations with actual data were made. A conclusion was drawn about the possibility of using the received relationships for parametric diagnostics of gas pumping aggregates based on their effective capacity in the conditions of limited initial information.

The article describes the concept of development and construction of integrated training systems designed to train professionals in the sphere of fire safety.The practical value of the study is that the proposed procedures, concepts and approaches to development of technical training permitted to formulate and implement achievable to date requirements towards instruction systems and training complexes for training the fire departments staff and especially dangerous facilities personnel, that ensure the maximum reduction in the impact of errors made by the staff trained on the overall level of fire safety in the conditions of insufficient resources for trainings.