An express research method is presented for studying the geotechnogenic system "aquifer-well" in solving problems of hydrogeology. The express method is based on the use of precision water level measurements. The scope of its application and relevance in modern conditions аre shown. Express pumping was performed at water bodies of Tyumen region, where an assessment (revaluation) of fresh underground water reserves was carried out. A comparative analysis of the results of express and traditional methods showed good convergence. The use of express pumping in the practice of hydrogeological research on small water bodies is the only tool for obtaining raw materials for the calculation (recalculation) of fresh groundwater reserves and makes it possible to reduce material costs when performing pilot filtration work. The recording of changes in the values of the conductivity coefficient by means of precision measurements of the water level during express pumping in monitoring studies allows you reliable and timely detection of changes in the filtration medium.

The article is focused on studies of features of the formation of heterogeneous geological structures namely the "lake-type" turbidite reservoirs, with complex thin-layered structure. The study of geological features and geological and commercial characteristics of such reservoirs requires selection of effective research methods. The structural features of the turbidite complex are considered on the example of terrigenous Upper Miocene sediments of the Pannonian basin of the Republic of Serbia. Based on the results of the studies, we confirmed the relationship of the structural features of mosaic structure of the basement and deep fault systems with the complex structure of terrigenous deposits. Based on the analysis of geological and geophysical material, we proposed the use of facies and tectonic-structural analysis in the complex, as complementary procedures in the study of such deposits. To test the hypothesis of formation of strata in the turbidite system mode, a sedimentological analysis of object "X" was carried out and sedimentation conditions were determined, which led to a conclusion that the influence of tectonics dominates the sedimentation during the formation of a relatively deep epicontinental basin. In order to confirm the presence of the rotational component, a lineament analysis of the territory was performed, on the basis of which the hypothesis of the formation of local structures as a result of shear tectonic movements initiated by local protrusions of deep structures was formulated and justified. Promising areas for the next stage of additional exploration of the territory are identified, based on a comprehensive analysis of core research materials, well logging and seismic data. Further study of the northern part of the territory in accordance with the described approach will most likely contribute to the discovery of local hydrocarbon deposits.

Many of the largest Cenomanian gas deposits in Western Siberia are in the final stage of development. There are the liquid loading in the well and gas production decrease. The choice of artificial lift technologies is due to both the technological features of the production process at a particular field, and the economic efficiency of their application. The technology of injection foaming surfactants into the well is widespread in the world, which is characterized by a relatively low level of capital investments and a high level of efficiency, including economic efficiency. There are difficulties associated with the prediction of the pressure gradient under foam flow in a production tubing. This article describes a method for calculating the pressure gradient under foam flow. The results of applying this method for calculating pressure gradient in gas wells of one of the Russian fields on the final stage of development.

The article is devoted to features of the geological structure of Bazhenov formation. The rocks of Bazhenov formation were dissected according to the data of a limited complex of well testing. The presented method is based on qualitative signs of changes in the registered curves, which have a pronounced character of changing values comparable to changes in the spectrometric composition of rocks, paleontological characteristics, the facies situation of sedimentation and secondary post-sedimentation processes occurring in Bazhenov deposits. During the analysis and development of the algorithm, the basic marking horizons were identified, which took into account the main lithological and metamorphic features of the formation's deposits. The presented method of marking differs slightly from the usual lithotypisation of a well section. Its simplicity makes sense to use the minimum amount of available information with the possibility of selecting and testing the most productive intervals of the formation. Successfully conducted testing of algorithms works in two deposits of the different genesis of the sediments, the data obtained are compared are presented with the detailed lithological characteristics selected by the core and the tested wells.

The article describes model of the molecular structure of capillary liquid, developed on the basis of the molecular-kinetic theory of liquid, created by J. I. Frenkel and other researchers. This model supplements the existing theory with a number of provisions, on the basis of which a new view of both capillary liquid in general and such a variety as gas-saturated oils is formulated. The validity of the model (at least a number of its ideas about the molecular structure of gassaturated oils) is confirmed by obtaining dependencies on the basis of this model for calculating such parameters of gas-saturated oils as the compressibility factor, volume coefficient and density. These dependences are distinguished by a clear mathematical structure, reflecting the physical content of the parameters determined from them, meet the boundary conditions and contain the main factors on which the calculated parameters depend. The legitimacy of the obtained model is also evidenced by the explanation on its basis of the "conditionally liquefied" state of gas in oil recognized by all researchers and the disclosure of the physical content of such a concept as "apparent density of gas in oil", which is noted in many works. Objective indicators of the validity of the developed model are the results of checking the dependences obtained on its basis according to the data for oils from different regions of Russia and neighboring countries. The check showed satisfactory convergence of the calculation results with the experimental data. The combined qualities of the model and the dependences obtained on its basis allow us to note that the proposed model can be considered as one of the alternative views on the physical nature of capillary liquid and oil.

A formula is presented to calculate the rate of bulk fluid flow in accord with hydrodynamic flow parameters and physical-chemical characteristics of pumping fluids. The formula was derived based on a model knowledge of fluid flow as a continuous sequence of strains — rotations of fluid fragments by the action of shear stress. Laboratory testing of volumetric flow rate depending on the hydrodynamic flow parameters and physical-chemical properties of liquids performed on a turbulent rheometer and as working fluids used ethanol and gasoline. The power and logarithmic dependences of the volume velocity were also checked using real data from the operation of oilfield pipelines. The results obtained satisfactory agree with the calculated data.

Ensuring the safety of oil and gas facilities and increasing their facility life are today one of the most important tasks. Emergencies related to rupture and damage of steel pipelines because of their wear and tear and external factors are still the most frequent cases of emergencies during the transportation of hydrocarbons. To expand the fuel and energy complex in the north, in the direction of the Arctic, alternative types of pipelines are needed that solve the problems of reducing energy and labor costs in oil and gas companies, reducing the risk of environmental disasters and depressurization of pipelines during hydrocarbon production. Fiber-reinforced thermoplastic pipes can be such an alternative. This article is devoted to a comparative analysis of the materials of a composite system consisting of a thermoplastic pipe (inner layer) and reinforcing fibers (outer layer); we are discussing the design of the structural system consisting of polyethylene (inner layer) and aramid fibers (outer reinforcing layer).

Continuous monitoring of the rig's technical condition is necessary for efficient use of the rig's wire rope resource. A classification of steel ropes used in the industry has been compiled. The characteristics of the pulley-block rope pulley to power drilling rigs are given. The analysis of recommendations for the selection and operation of rope hoists is carried out. The reasons for the occurrence of complex stress-strain states of the rope during its operation are considered. The analysis of methods for calculating the load-bearing capacity of wire rope and determining the fatigue strength is given. Comparative data on the actual standard operating time of wire rope are given. The scientific problem of predicting the residual resource of wire rope is analytically investigated. For operational control of defects in steel ropes, the prospects of using magnetic flaw detection methods are considered. The article draws our attention to the need to implement the following scientific, technical, and technological solutions, such as improving the design of pulley-block system of drilling rigs; accuracy increase of diagnosis of technical condition and forecasting of resource strings; maintenance of wire rope; this will contribute to a more complete use of wire rope in drilling rig.

In the article, we systematized, processed, and formulated modern priorities for the integrated strategic development of the Russian Arctic based on the analysis of modern international and domestic challenges facing our country in this region. The modeling of economic development for the medium term was carried out; doctrinal directions were formulated for all points of balanced development in modern concepts of economic growth. The structure of modern governance in the Russian Arctic and its vulnerabilities, potential growth points are presented, as well as the dissonance in public policy, which is confronted with the multifactorial nature of territorial Arctic development, is reflected. The points of divergence of industries, social sphere, and environmental safety in favor of public administration on modern technological thinking are given. The results of this study may be of interest to Arctic researchers, state institutes of strategic planning and management of the largest corporations involved in the development of natural resource potential, as well as to representatives of the scientific community, whose area of interest is in the spectrum of searching for optimal ways to develop the natural resource potential of the Arctic.