Earth or rock drilling and mining (E21)

E   Fixed constructions(156823)
E21            Earth or rock drilling; mining(78009)

Return valve for drilling strings // 2614342
FIELD: mining.SUBSTANCE: return valve contains a hollow cylindrical body and disposed and located there the following components: the fixed saddle, forming by its inner surface with the inner surface of the valve body the flow path channel for fluid from the drilling string; as well as contacting with the saddle movable locking unit with disc-shaped head, providing that contact, with rigidly connected with it and tightening the locking unit to the saddle by spring-loaded rod in the form of the central rod with shank, with locking unit clamp relatively to the saddle and covering the rod shank by the locking plug with the slot for the locking unit clamp. At that the valve is additionally equipped with a hollow conical plug, covering the locking plug and supporting by its large base the disc-shaped head of the locking device, and its body is made as one piece and locking unit clamp is made as the press-fitted pin into the rod relatively to the saddle. At that the locking plug slot for the locking unit clamp is made as profiled-blind, providing due to its form the opportunity not only of free axial movement of the pin rod in it at vertical movement of the locking unit, but also the possibility of its locking in this groove at the forced rotation of the locking unit around the axis, and also the subsequent exit from it under the action of the fluid flow from the drilling string, falling to the head of the locking unit. The rod spring is installed on its shank in the locking plug, and the locking unit itself, generally, with its disc-shaped head, its spring-loaded rod with a pin, the conical and the locking plugs formed in the stable relatively to the axis of the one-piece unit valve, installed in the valve channel separately from the body under its saddle, and the fixed valve saddle is designed as a single metal sleeve fixed in the housing.EFFECT: increase of valve reliability and manufacturability.2 dwg

ethod of real-time control of reservoir flooding // 2614338
FIELD: oil-and-gas industry.SUBSTANCE: invention relates to petroleum industry, namely to control of oil reservoir flooding. Method involves oil sampling through producer wells and working agent injection through injection wells, evaluation of impact of production and injection wells. In order to determine the optimum values of injectivity of injection wells a mathematical model of the field is used, and the initial data for each production well and injection wells potentially affecting it the parameters in the form of the date of measurement, injectability, flow rate of fluid and oil fraction are taken. The mathematical model is comprised by functions, reflecting the change in fluid flow rate and the share of oil production wells at change of injectivity of injection wells, also, the mathematical model is adapted by obtaining the minimum difference of actual and estimated data of fluid flow rate and the share of work of each oil production well. The optimum values of regulated parameters of fluid flow rate of functions of fluid flow rate and the share of oil are determined, and the mixed function of daily oil production of producing well is made depending on the injectability of injection wells around. Then the maximization of total oil production of the field as a whole is perfoemd through the redeployment of injectivity of injection wells, with imposition of restrictions on the volume of injection for efficient organizing of system of displacement of oil with water and maintaining the reservoir pressure.EFFECT: invention provides efficient organizing of the system of displacement of oil with water and maintenance of reservoir pressure.4 dwg, 11 tbl
Dredge work method of watercut placer mineral deposits // 2614337
FIELD: mining.SUBSTANCE: method includes preparation and extraction works, dressing and dumping, the construction of dams around the mining equipment and the stock, prepared for working out during the winter season, upon the occurrence of sustained freezing temperatures the works are carried out in the shed, placed on the dam and mine development is carried out at the maximum possible height of the dredging section freeboard, while moving the shed with dredge begining to move.EFFECT: reduction of the shed construction costs, which will significantly extend the mining season.1 dwg

Fluid flow heating system in pipes // 2614280
FIELD: electricity.SUBSTANCE: system includes a heating cable, which is placed in the zone of possible wax formation or pipeline freezing, the transition terminal box for the heating cable connection, heating control station, the cable pusher, creates an additional stress for unwinding the heating cable from the technological drum and pushing through the inclined insertion in the pipeline, parasol-piston, which is mounted on the tip of the heating cable. Umbrella-pistal opens and creates pulling force under the action of the flow of the technological fluid and closes after cable mounting under the action of excess pressure in the pipeline. There are load-bearing core and separating bundles made of high-strength aramid fibers in the heating cable. There is an implemented automatic adaptive cable heating control system in the control station on the current values of the pressure and temperature of the fluid in the pipeline, as well as the system of remote control and cable heating control.EFFECT: simplifying the process and reducing cable installation time, implementation of the heating in automatic mode with minimal costs.3 dwg
Protector for power cable safety in well (variants) // 2614178
FIELD: oil and gas industry.SUBSTANCE: protector to save the power cable in the well contains a molded case, equipped with two longitudinal edges and formed integrally with the cable channel and the center channel with the size under the outer diameter of the tubing to lock the protector housing to the coupling joint, hinged arcuate clamping brackets one end of which is provided with an opening for rotation on an axis which passes through the bracket, and the second - is attached by a bolt to the housing. This clamping brackets are made cast or stamped. Housing protector is equipped at their ends guide channels: to secure wide and narrow electric cable for fixation of the high-pressure supply tubes of chemical reagents. Longitudinal hull rib has two abutments to prevent axial movement relative to the housing of the arcuate folding clamping brackets and the middle portion of the tread has a lateral housing edges connecting the longitudinal ribs and the housing having a guide channel in its middle part.EFFECT: increase of reliability of fixing of the electric cable and the high-pressure pipe supplying chemicals into the tread body.2 cl, 4 dwg
Executive body of tunnelling shield complex for construction of multilane road and railway tunnels and pillarless metro stations // 2614176
FIELD: construction.SUBSTANCE: executive body of the oval-shaped shield complex comprises lateral working bodies that represent ovals formed by rotating about the vertical axis of the lateral tunnel arches and their coupling with the arch and the reverse arch of the tunnel. The front working body consists of three working bodies, each of which is formed by rotating about the horizontal axes of the arch and the reverse arch circles, wherein the intermediate working body is made concave. The gaps between them and the shield shell correspond to the working tool overhang, and the working tool is mounted with the displacement to the development magnitude.EFFECT: provision of tunneling with the optimal oval cross-section shape, while reducing the costs for the rock development; provision of tunneling in various geological conditions at the large influx of water, creating the conditions for the maximum mechanization and automation of all production processes.2 cl, 6 dwg

Device for dredge work of deposits during winter // 2614175
FIELD: mining.SUBSTANCE: device includes a dam around the mining equipment and a sliding shed, placed on it with a transparent insulating roof. Wherein the shed is made of polycarbonate, on the entire surface of which there are double-convex lenses in staggered rows.EFFECT: protection of heat inside the shed.1 dwg

Device for determining technical state of cone cutter bit // 2614173
FIELD: mining.SUBSTANCE: device for determining the technical condition of a cone bit comprises the frame with the rotating body feeding mechanism fixed thereon, with the possibility to create load on the cone cutter to be diagnosed by means of the disc for the cone cutter rotation, the electric motor and the step speed control pulleys, the base frame for installing the cone cutter bit thereon, with the ability to fix a vibration sensor on its feet. The device is additionally provided with a removable cartridge for installing the cone cutter bit with the possibility of rotation around its own axis, mounted on the movable platform, with the possibility of moving in a horizontal plane via a handle mounted on the feeding worm gear mechanism shaft and the movable frame loaded by the handle mounted on the feeding shaft, the frequency converter of smooth lectrical motor speed regulation and the signal processing unit, both arranged on the frame, interconnected with the sensor for measuring the cutter rotation speed and the vibration sensor, the disc pad with a slot and a high-precision optical distance-measuring sensor. The disc pad is adapted to be fitted on the rotating body, and is fixed by the feeding mechanism in a vertical plane, and the optical distance-measuring sensor is mounted in the disc pad slot with the possibility of moving the sensor along the slot from the disk pad edge to its center.EFFECT: improving the accuracy in determining the technical state of a cone cutter bit.2 dwg

ethod and equipment for interval research of formation parameters at tubes // 2614169
FIELD: mining.SUBSTANCE: method includes the downhole equipment lowering into the well to the specified depth, consisting of an oilwell tubing column (OWT), upper and lower inflatable packers with the radial holes in the inflation chambers, the outer and inner flexible sleeves with disposed between them the metal plate frame, switching of the upper and lower inflatable packers from transport to working position. The assembly and lowering of the downhole equipment is carried out in the following sequence: the plug, the circulation full bore tube valve with the shear pins, the lower centralizer, inflate and bypass valve of the inflatable packers layout (IBVIPL) underpackers, the lower inflatable packer and inflate valve, interpacker disconnect switch, interpacker IBVIPL, upper inflatable packer and inflate valve, the upper centralizer, overpacker disconnect switch, circulation valve. At the beginning of the downhole equipment lowering, the inflate valves of the inflatable packers, underpacker IBVIPL and interpacker IBVIPL are in the closed position. When the casing pressure is exceeded over the OWT column pressure, the opening of the bypass holes of underpacker and interpacker IBVIPL and filling of OWT column with borehole fluid is carried out. The bypass holes of underpacker and interpacker IBVIPL are closed automatically, then provide the first fluid supply. At that the inflate and bypass holes of underpacker and interpacker IBVIPL are closed and build the pressure, at which the upper and lower inflate valves of the upper and lower inflatable packers are opened respectively, bringing the inflatable chambers into the working position. The downhole equipment is stand under the pressure, then slowly carry out the first pressure releasing: if it reaches the value, the inflate valves are closed completely. The inflatable packers are moved to the working position and intervally overlap the wellbore. At the first pressure release in the underpacker IBVIPL there is the opportunity to open the bypass holes, then the fluid selection is carried out from the underpacker area. The inflate and bypass holes of interpacker IBVIPL are closed. The second fluid supply is performed and the constant pressure is built, at which the inflate holes are opened in underpacker IBVIPL . If necessary, the process fluid inflate to the underpacker area is carried out, during which the inflate and bypass holes of interpacker IBVIPL are closed. Produce the second pressure release, at which there is the opportunity to open the bypass hole in the interpacker IBVIPL. The fluid selection from interparcker area is performed during which the inflate and bypass holes of underpacker IBVIPL are closed. The third fluid supply is performed and the pressure is built, at which the inflate holes of interpacker IBVIPL are opened, and the inflate and bypass holes in underpacker IBVIPL are closed. Produce the third pressure release, at which the inflate and bypass holes of both IBVIPL come to the starting position.EFFECT: acceleration of works on the sample fluid selection or process fluid inflate into the underpacker and interpacker well areas at one tripping process.2 cl, 6 dwg

ethod for development of oil producing well and device therefor // 2614139
FIELD: oil industry.SUBSTANCE: group of inventions relates to oil industry, in particular, to methods for development of oil producing wells and device for realising said methods. Method for development of oil well includes steps of: acid treatment of bottom-hole zone, on which acid solution is pumped into bottom-hole zone, holding for period of time of reaction of acid solution with rock of bottom-hole zone; bringing well to operation conditions, on which shank is lowered into bottom-hole zone, wherein shank loaded with granules of magnesium metal, pump equipment is lowered into well, pumping equipment switched to operation conditions, fluid is extracted from well, wherein fluid extracted from well by means of pumping equipment, when passing through shank is brought into contact with granules of magnesium metal, loaded into shank, pumped fluid is directed towards exhaust line. Device for neutralising acid comprises shank, connected to tubing string (TS), wherein shank has a housing, an inner cavity, in which are loaded granules of magnesium metal, and holes for extraction of fluid medium, made in housing of shank, wherein cavity of shank is linked with hole of tubing string.EFFECT: technical result is reduction of corrosion of downhole equipment, shorter duration of well development, lower power and labour costs for transportation, processing and recovery of acid.20 cl, 2 dwg

ethod for sinking vertical well bores and corresponding equipment // 2613999
FIELD: mining.SUBSTANCE: system for sinking vertical well bores includes a rotary drive mounted on a multi-tiered sinking platform with telescopic hydraulic cylinders, and connected to a cylindrical drill, hydraulic penetration bids, a loading machine for excavation of rock, and a tubbing erector. The set of equipment includes a conductor, with friction type bearings along the perimeter, and lower and upper supporting rings, and a screwdown structure with stulls and an encasing. A cylindrical drill has a cutting edge along the lower end and a support ring in the middle section, with the tooth wheel on top; wherein the gear drives are mounted on the lower conductor support ring to engage with the gear. The loader is mounted on a telescopic vertical stand rigidly fixed to the upper central part of the conductor. Cylinder rods of hydraulic jacks of the rock drill are mounted on the upper support ring of the conductor and rods of telescopic hydraulic jacks are connected with the screw down structure. The top floor of the sinking platform has niches with inflatable rubber elements, to prevent leakage of concrete.EFFECT: increased speed of shaft sinking and lining quality due to construction of a monolithic lining inside the barrel.3 dwg

Device for gas-vapour mixture production // 2613997
FIELD: oil and gas industry.SUBSTANCE: device for producing gas mixture contains a gas turbine engine, an additional combustion chamber, which communicates with the cavity on the one hand with the output of the free turbine and gas turbine engine fuel line, and on the other hand - to the inlet of the heat exchanger. A gas turbine engine includes a compressor and turbine impellers, which are mounted on the same shaft, the combustion chamber, the free turbine, a shaft, which is connected to the shaft of the water pump. The combustion chamber communicates with one side part of the compressor with the flowing fuel line and, on the other hand with the flow part of the turbine. At the same time to the other input of heat exchanger, a water pump is connected and heat exchanger outlets communicated with the jet compressor.EFFECT: increased efficiency of combined-cycle impact on the oil reservoir by optimizing plant design.1 dwg

Steam-gas generator // 2613995
FIELD: oil and gas industry.SUBSTANCE: steam-gas generator contains a ballasting component cooled combustion chamber and the mixing head. Mixing head includes an oxidant, the fuel supply unit, the component feed unit is ballasted with fired bottom. In the mentioned blocks uniformly coaxially-jet nozzles are mounted in the circles. Moreover, a regenerative cooling path cavity combustion chamber is connected to the cavity of the supply unit is ballasted component. In the internal cavity of the combustion chamber, the tubular heat transfer elements are arranged parallel to its axis. Wherein one end of each of the tubular heat transfer element mounted in the combustion bottom ballasting component feed unit and the other end of said heat exchange element coaxially mounted in a shaped channel formed in the bottom, placed at the outlet of the combustion chamber, gas pipe fixed to the bottom.EFFECT: increased efficiency of thermal effects on the oil reservoir by mixing in steam-gas generator formed in the flue gas produced by it with steam and feeding the resulting gas mixture into the oil reservoir.2 cl, 3 dwg
ethod of quantitative analysis for distribution of contaminant particles which infiltrated in porous medium during filtration // 2613903
FIELD: oil and gas industry.SUBSTANCE: cationic-dyed particles are mixed with granules of loose medium of the colour which is close to the colour of the examined porous medium, and at least three calibration standards are prepared at various known mass concentrations of died particles. The prepared standards are photographed and the images are digitally analyzed based on the RGB additive colour model. The intensity profiles of red, green and blue colours are obtained for each standard. Based on the analysis of the profiles a standard for quantitative characterization of changes in the red, green and blue colours in all calibration standards is chosen and a single calibration curve is received. A suspension of dyed particles is prepared and pumped through a sample of the analyzed porous medium. Then, the sample of porous medium is split into two parts along the suspension direction during pumping and the sample cleavage is photographed under the same conditions under which the images of the calibration standards were obtained. The resulting image of the sample cleavage is digitally analyzed based on the RGB additive colour model and a two-dimension intensity distribution of the red, green and blue colours in the sample cleavage is obtained. The background values of the red, green and blue colour intensity are determined as well as the two-dimension distribution of the mass concentration of dyed suspension particles based on the obtained two-dimension distribution of the red, green and blue colour intensity in the taken image of the sample cleavage using the background values of the red, green and blue colour intensity, selected standard and calibration curve.EFFECT: simplified and improved information content of the analysis.16 cl, 9 dwg

Off-road vehicle // 2613751
FIELD: transportation.SUBSTANCE: invention relates to off-road vehicles using an air cushion, for instance, in open pits after blasting works. Vehicle comprises a body, a bottom, a flexible barrier of the air cushion cavity made along the perimeter of the body bottom, nozzles to supply compressed air, a suction air intake of an air blower, relief pipelines, a cargo container. Besides, outside the perimeter of the flexible barrier of the air cavity, the bottom is equipped with a looped elbow with nozzles to suck in loose material. Besides, the looped elbow by means of relief pipelines is equipped in series both with the cargo container to collect loose material and to clean air from it, and an air intake.EFFECT: invention provides for collection and transportation of dust generating loose material from soil surface.1 dwg

ethod of oil-bearing bed development // 2613713
FIELD: oil and gas industry.SUBSTANCE: method of oil-bearing bed development comprises drilling and alternation every-other-row by placing rows of horizontaldevelopment wells and rows of horizontal injection wells at the first distance from each other. Horizontal development well bores and horizontal injection well bores are positioned in the direction of minimum horizontal stress in the bed so as to ensure the propagation of hydraulic fractures perpendicular to the horizontal well bores direction. At least two hydraulic fractures are mounted at the casing columns of injection and development wells, located at the second distance from each other and providing communication between the wells and the bed. A multistage hydraulic fracture is carried out through hydrofracing ports in the development and injection wells so that hydraulic fracture cracks are formed along each well perpendicular to the bore direction. The hydraulic fracture cracks of injection wells are offset from the hydraulic fracture cracks of the development wells at the third distance. The wells are placed in operation by pumping fluid into the injection wells with control of flow and/or volume of pumped fluid so that the pumping pressure is below the hydraulic fracturing pressure.EFFECT: ensuring ultimate hydrocarbon recovery from the deposit, maximized productivity ratio.5 cl, 4 dwg

Anti-vibration ring drill crown // 2613712
FIELD: mining.SUBSTANCE: anti-vibration drill crown comprises a housing with connecting thread, divided with main flushing ports in the sectors that on the end surface are provided with polycrystalline diamond inserts (PCD), having a negative rake angles in plan to the lateral inner and outer cutting surfaces and a negative rake angles to the downhole end surface, main flushing ports are oppositely angled, moreover, additional flushing ports formed along the entire height of the crown body in a helical line rightwards along the crown rotation are located counter-currently angle wise in the crown case in sectors. The height of the crown body depends on the helix lead of main and additional flushing ports, inside the additional flushing ports there are two or more calibrating PCD each of which represents a separate helix element and is fixed on the housing by soldering at a negative angle of minus 5 to minus 15 relative to the cutting surface. PCD at the crown end are arranged in different directions at an angle of 10 up to 15 to the direction of cutting.EFFECT: reduced number of chips and damages of the polycrystalline diamond inserts on the crown body, increased drilling rate and reduced vibration.7 dwg
Drill fluid processing method // 2613709
FIELD: oil and gas industry.SUBSTANCE: invention falls into the area of the oil and gas producing industry, namely the drilling of horizontal holes of a long-mileage, associated with the development of the cluster drilling, including the construction of wells in the conditions of the Extreme North and the continental shelf. The method is intended for the drilling of horizontal holes of long-distance wells under conditions of the absorption of drill fluid. According to the method, a temporary mechanical filling compound is inserted, bypassing the purification system. This filler is made in the form of a rubber crumb with a hydrophilic surface and an effective diameter of the particles, more than 1/3 of a cross sectional dimension of cracks and pores. The filler - rubber crumb, prepared in this way, is handled by absorbent oil. On top of the oil the rubber crump is processed by the soap with the possibility of formation of an anti-friction coating, provided by the chemical bonds with this crump.EFFECT: method allows to reduce the coefficient of friction of the drill column on the hole walls, the absorption of the drilling liquid and the hydraulic pressure of the drill column to the hole walls by injection of a universal physic and chemical component to the drill fluid.
Universal protector // 2613706
FIELD: electricity.SUBSTANCE: universal protector comprises an elongated body with a longitudinal recess to accommodate the cable having protective shields configured to grip the tubing pipes in the area of their connection, two brackets hingedly connected respectively to the body parts located on each side of the protective shields and envelopping the pipes. Each bracket is provided with a spring element located with the possibility to preload the tubes to the body. The body parts have locking tabs, and in the brackets there are locking grooves made corresponding to the tabs. The middle body part has a double bend, on each side of which the holes are made for the special keys adapted to align with the body and to rotate until they are fixed in the body for fixing the cable.EFFECT: versatility of the design and ensuring reliable retention of the electric cable that excludes its damage during the operation.3 dwg

Acoustic determination method of perforation parameters at secondary completion of oil and gas wells // 2613704
FIELD: oil and gas industry.SUBSTANCE: information noise signal, formed by the perforator discs work, passes along the hydroacoustic channel, it is received, digitized and fed to the correlation filters, to which also the reference acoustic signals are fed: water-steel, water-concrete, water-soil, which represent digitized audio signals of water stream noise, beating on the steel, concrete and soil, and noise of cutting pipes by disks. At the correlation filters outputs there will be the correlation functions, which present peaks, taking the positive values if in the noise signal there is the signal similar to the reference one. Thus, each correlation function corresponds to one of the perforator operation status, and according to the correlation functions spectrum the processes occurring in the well are evaluated.EFFECT: possibility of well parameters status determination with high-precision at the hydromechanical perforation under the condition of acoustic disturbances if the ratio signal-noise is less than one.1 dwg

Sliding coupling with deformed ball seat // 2613697
FIELD: technological processes.SUBSTANCE: invention relates to tools for stepwise hydraulic fracturing of a formation. Sliding coupling is opened by a dropped ball. Coupling has a seat installed in a housing, and the seat has segments with deviation outwards from each other by a split ring or another deflecting element. First, the seat has an extended state in the sliding coupling, herewith the segments of the seat are expanded outside thrusted to the housing channel. When a ball of the proper diameter is dropped onto the borehole bottom, the ball is engaged with the extended seat. Supplied fluid medium pressure acting on the ball fitted into the seat moves the seat into the channel of the inner bushing. When this happens, the seat is reduced, which increases the square of the ball engagement with the seat. Finally, the seat reaches the collar in the inner bushing, herewith the supplied pressure acting on the ball fitted into the seat displaces the inner bushing in the housing to open a window for the sliding coupling passage.EFFECT: technical result is higher efficiency of a sliding coupling with a deformed ball seat.26 cl, 37 dwg

Sliding coupling with narrowing, dual-segmented ball seat // 2613690
FIELD: mining.SUBSTANCE: group of inventions relates to sliding couplings and methods for treatment of borehole with a fluid medium. Sliding coupling opened by a discarded plug comprises a housing forming the first channel and an outlet hole connecting the first channel with the housing ambient medium; an inner coupling forming the second channel and moved in the axial direction from the closed position into the open position inside the first channel in relation to the outlet opening; and a seat located in the second channel of the inner coupling. Seat comprises a seat ring arranged in the second channel in the first axial position and having the first contact size and a compressed ring arranged in the second channel and forming a space between the upper expanded section of the compressed ring and the second channel. Seat ring in the first axial position is engaged with the discarded plug in the first contact size and moves the inner coupling into the open position in response to the fluid medium pressure applied to the engaged plug. Seat ring moving into the second axial position is placed in the space between the upper expanded section of the compressed ring and the second channel and narrows the upper expanded section of the compressed ring inward. Upper expanded section of the compressed ring narrowed inward to the second contact size, more narrow than the first contact size, is jammed on the engaged plug.EFFECT: technical result is ensuring a jammed resting of the plug in the seat to receive high pressure, facilitate crushing of the plug, exclude its chipping or cutting at edges.27 cl, 16 dwg

ethod of productive formation hydraulic fracturing with clay layer and gas-bearing horizon // 2613689
FIELD: oil and gas industry.SUBSTANCE: method involves performing the perforation in the range of productive formation of the well oriented in the direction of the main maximum voltage, landing of tubing string with packer to a well, packer seating, performing hydraulic fracturing treatment (HFT) by hydraulic fracture liquid injection by the tubing string with packer through perforated interval to the production string with obtaining and further fracture fixation by propping agent, pressure relief in the well, packer releasing and its extraction with a tubing string from the well. Oriented perforation is carried out using slot perforator with an orienting sub, HFT process begins with pumping of the fracturing fluid, a cross-linked gel is used as the fracturing fluid to create a crack in the productive formation. After that the created crack is developed by injecting linear gel with density of 1150 kg/m3 at first with ultralight proppant with fraction of 40/80 mesh with a concentration of 200 kg/m3, and then with quartz fine-grained sand with a grain size of 0.1-0.25 mm and concentration of 600 kg/m3. Then the crack is fixed by injecting crosslinked gel with fraction of 20/40 mesh proppant or 12/18 mesh, depending on the permeability of the productive formation by portions with stepped increasing of proppant concentration to 100 kg/m3, starting from 200 kg/m3 to 800 kg/m3, the last portion of the RCP-proppant is pumped with concentration of 900 kg/m3. The crosslinked gel with a fraction proppant of 20/40 mesh is pumped into a productive formation with a permeability from 0.01 to 100 mD during fixation of the crack, while in a productive formation with a permeability from 100 to 500 mD the crosslinked gel is pumped with a proppant of 12/18 mesh during fixation of the crack.EFFECT: increased reliability of the creation and development of the crack; improved process efficiency, reduction of hydraulic resistance in the range of perforation, quality improvement in fixing the crack in the bottomhole formation zone and the exclusion of injecting proppant into the well during the subsequent development.4 dwg

Downhole survey automatic evaluation // 2613688
FIELD: mining.SUBSTANCE: invention relates to well surveying facilities. Disclosed is underground well bore downhole survey data automatic evaluation method, including downhole navigation sensor measured values reception and ground sensor data automatic evaluation obtained practically at same time, as navigation sensor measured values to determine, whether navigation sensor measured values were obtained at well shaft downhole survey acceptable conditions. Navigation sensor measured values are evaluated to determine, whether measured values satisfy preset conditions, required to obtain downhole survey acceptable data. Recommendation for downhole survey is automatically generated based on made automatic evaluations.EFFECT: technical result is higher accuracy of surveys data obtaining.20 cl, 4 dwg
Connecting assembly of high pressure multilateral well (versions) // 2613685
FIELD: well equipment; technology of manufacturing. SUBSTANCE: group of inventions relates to connecting assemblies of a high pressure multilateral well. Connecting assembly of a high pressure multilateral well comprises a base with the upper end and the lower end, a tubular main branch, a tubular side branch and a stabilizer. Tubular main branch has a hole at one end to introduce one or another tool. One end of the main branch is threaded to the said lower end of the base and increases the maximum tolerable pressure above the connecting assembly of the multilateral well. Tubular side branch has a hole at one end to introduce the said one or another tool and another hole at the other end. One end of the side branch is threaded to the said lower end of the base and increases the maximum tolerable pressure above the connecting assembly of the multilateral well. Stabilizer is connected to the main branch or the side branch and has a hole to receive the said main branch or the said side branch.EFFECT: technical result is limiting movement of the main and the side branches when the connecting assembly is lowered into the well.18 cl, 3 dwg

ethod of hydraulic breakdown of formation // 2613682
FIELD: oil and gas industry.SUBSTANCE: invention can be applied for hydraulic fracturing treatment (HFT) in a producing well in the presence of associated and/or bottom water. The method involves performing the perforation in the range of well formation oriented in the direction of the main maximum voltage, landing of tubing string with packer to a well, packer seating, performing HFT by hydraulic fracture liquid injection by the tubing string with packer through perforated interval to the production string with obtaining and further fracture fixation by propping agent, pressure relief in the well. To perform perforation hydromechanical perforator is lowered on tubing string to the well before the footing interval, a pair of perforations are made along the perimeter of the well from the bottom to the top of formation at an angle of 30 off-centre when making each pair of the perforations, after the perforation is made NFT with a perforator is removed from the well and then NFT with parker is lowered into the well and packer is seated at the well, before HFT is performed, volumes of fracturing fluid for the formation of fracture, the elastomer added to the fracturing fluid, proppant for fixing the fracture are sequentially determined, and then HFT is performed. Gelled oil is used as the fracturing fluid, the amount of the gelled oil is divided into two equal portions, the first portion is pumped into the first half of the gelled oil volume and HGT is performed forming a fracture, the second portion is pumped into the second half of the gelled oil volume adding granular water-swellable elastomer to create a water shutoff screen over the entire surface of the fracture from the granular water-swellable elastomer, then the fracture is fixed by injecting liquid carrier of gel crosslinked with proppant at first of fine fraction of 20/40 mesh in an amount of 55-60% by weight of the proppant, then the coarse fraction of 16/20 mesh in an amout of 40-45% of the total proppant weight with stepwise increasing concentration of proppant to 100 kg/m3, from 200 kg/m3 to 1200 kg/m3.EFFECT: elimination ofwater break through the frqaction, increased conductivity of the fraction and reliability of the method, reducing costs by eliminating the participation of the geophysical party, reducing the duration of the HFT technological process.5 dwg

System (versions) and method (versions) for estimation of deep formation // 2613680
FIELD: drilling soil or rock.SUBSTANCE: invention relates to means for logging during drilling wells. In particular, proposed is an appliance for logging during drilling (LDD) with multiple modules arranged along the drilling string comprising: the first module of the appliance multiple modules for LDD comprising a transmitting antenna; the second module of the appliance multiple modules for LDD comprising a receiving antenna; and at least one device for measuring the position, which at least partially determines spatial positions of the transmitting and the receiving antennae relative to each other. Herewith the formation model is matched with the environment at least partially on the basis of the said relative spatial positions.EFFECT: technical result is improved quality of the signal transmitting information.23 cl, 8 dwg

Electrical discharge method for rock destruction // 2613678
FIELD: mining engineering.SUBSTANCE: electric discharge method for rock destruction may be used in mining engineering and construction industries for strong rocks in rock quarries and slabs, border stones, a variety of construction stone elements. For all planes of spalling, including at the bottom of the plantar surface of each block there are formed the extended electrical breakdown channels by high-voltage discharge with an energy insufficient for breaking rock. For the formation of each channel of the electric rock breakdown, one shall provide for at least five high-voltage pulses. Bottomhole ends of the rod electrodes are made in the form of toothed wheels, or wheels with sharp edges. Separation of the rock is carried out by applying of high voltage pulses with high energy of each pulse, or known methods.EFFECT: invention improves the efficiency of destruction of rocks, improving the quality of surface spalling, including the bottom sole that increases the output of blocks of hard rock and other products of specified form.2 cl, 3 dwg
Downhole drilling assembly with hydraulic coupling and its application method // 2613671
FIELD: mining.SUBSTANCE: group of inventions relates to directional drilling. Downhole drilling assembly includes a drill string equipped with an internal passage for a fluid medium, a hydraulic motor located inside the drill string and having a stator and a rotor made able to rotate relative to the stator as a response to the drilling mud supply through the internal passage for the fluid medium, a drive shaft functionally connected with the rotor and made with the possibility of rotation as a response to the rotor rotation, a drilling bit functionally connected with the drive shaft and made with the possibility of rotation as a response to the drive shaft rotation, and a hydraulic coupling located in the drill string and having the first clutch made with the possibility of rotation with the drill string and the second clutch made with the possibility of rotation with the drive shaft. In the first configuration the first clutch is disconnected from the second clutch so, that the drive shaft and the drill bit rotate relative to the drill string as a response to the rotor rotation. In the second configuration the first clutch interacts with the second clutch as a response to the hydraulic pressure created by rotation of the drill string so, that the drive shaft and the drill bit rotate with the drill string.EFFECT: provided is the possibility to transfer sufficient torque to release the seized drilling bit.20 cl, 13 dwg

ethod of multizone oil field development // 2613669
FIELD: oil and gas industry.SUBSTANCE: method involves drilling of vertical and inclined wells as per any of the known well patterns; determination of intercalations with various permeability; pumping of displacing fluid to each intercalation through pressure wells and extraction of the field product from each of the intercalation through producing wells. Multizone field areas are determined where formational pressure of each intercalaton eliminates the hydrodynamic connection between them when transmitting. Drilling of vertical pressure wells in the central portion of the deposit and of producing wells around the perimeter inside the deposit is performed. Pressure wells are built vertically and producing wells - inclined so that the profile log is uniform at all intercalations from pressure well to nearby producing wells.EFFECT: increased completeness of reserve recovery.3 dwg

Directing drilling operation using optical computing element // 2613666
FIELD: oil industry.SUBSTANCE: invention relates to a device for measurements, relating to search for oil and gas in directed drilling. Disclosed is a system for directed drilling, comprising: an optical computing element (105; 405; 805), located in housing (401), configured for attachment to drill string; window (402) in housing, configured to receive light from outside housing so that light is directed from outside of drill string to optical computing element, when housing is installed on drill string; and analytical unit (420), intended to provide a signal based on signal output from optical computing element in response to receiving by optical computing element light from outside of drill string. Provided signal is intended for directed drilling based on characteristics of area defined by signal output from optical computing element.EFFECT: high accuracy of identification of productive zone.7 cl, 11 dwg

Linear pan and longwall cutter // 2613659
FIELD: machine building.SUBSTANCE: invention relates to longwall cutters and, more specifically to all-movable face conveyer linear pan. Linear pan section comprises front rail, mined space side rail opposite to front rail and conveyor pan between face rail and mined space side rail. Front rail has horizontal upper surface by upper surface height and with upper surface width, inclined loading surface passing in mining face and ground surface direction and arranged at oblique angle relative to upper surface, loading surface located on loading height and having loading surface width, loading surface width, and cavity for material made in front surface under loading surface and recessed in mined space direction.EFFECT: technical result is improving of both mining combine and cut material loading characteristics.23 cl, 10 dwg

Borehole perforator with integrated initiator // 2613648
FIELD: blasting operations.SUBSTANCE: group of inventions relates to perforating-explosive operations. Device for perforation of wells includes at least one perforation charge; an initiator, which comprises a ballistic circuit adapted for ignition of at least one perforation charge, herewith the ballistic circuit comprises a detonator and a detonating cord; and a ballistic shut-off gate located between the detonator and the detonating cord, herewith the ballistic shut-off gate prevents ignition of the detonating cord, and the ballistic shut-off gate can be removed from the position between the detonator and the detonating cord when a command comes from the surface.EFFECT: provided is prevention of premature detonation of a borehole perforator, while simultaneously reduced is the volume of operations with electric wiring performed on the surface.18 cl, 6 dwg

Systems and methods for increasing liquid pressure of petroleum gas separator - liquid using one ore more pumps on sea bed // 2613646
FIELD: engines and pumps.SUBSTANCE: group of inventions relates to systems and methods for increasing fluid pressure in the hydrocarbon gas separator - the liquid located on the sea bed. The system comprises a separator with upper and lower sections connected in fluid medium with at least one pipe extending from the lower section to the upper section; the first pump set into the separator lower section and made with possibility to increase the fluid pressure level in the lower section when the separator is on the seabed; and the upper section connected with the separator and made with possibility to connect the liquid outlet pipe located at least partially outside the separator with the first pump.EFFECT: invention increases liquid pressure in the separator to the required level.19 cl, 6 dwg

ethod of extraction of oil, condensate and high-molecular compounds // 2613644
FIELD: oil and gas industry.SUBSTANCE: industry of a single technical-and-economic regional cluster. A method of extraction of oil, condensates and high molecular compounds is implemented in the complex comprising at least two gas-condensate fields with oil banks. The first field is close to be depleted, and the second one is high-yielding. The fields differ by content of hydrogen sulphide and carbon dioxide impurities in the produced hydrocarbon gas. The process is performed by injection into the reservoir of gas condensate fields with oil rims of carbon dioxide and extraction of gas-liquid mixture. The carbon dioxide for injection into the reservoir of the first field iatn the initial stage is produced from extracted second hydrocarbon gas with a larger amount of carbon dioxide. The ratio of hydrogen sulfide and carbon dioxide impurities in the recovered hydrocarbon gas for the first and the second fields are (2.4): 1 and 1: 1 respectively. At the initial stage the gas treatment is performed at the first field with one stage with simultaneous deep extraction of hydrogen sulfide and carbon dioxide. As the impurities ratio gets closer to 1: 1 two treatment stages - selective and deep - are performed. Purification of the produced gas of the second field is continuously performed in two stages. The recovered carbon dioxide is pumped to the compression down to the pressure 7.0-8.0 MPa for further transportation in liquid form to the first field. Injection is performed into injection wells located on hydrocarbon production sites. The recovered gas, condensate from production wells, including retrograde one, and high molecular compounds are separated into gas and liquid phases. The gas phase is transported to gas processing plants, and liquid phase - to refineries of the single cluster.EFFECT: invention improves the efficiency of extraction of hydrocarbon from the fields depleted by forming links between production and processing elements of the cluster to ensure its functioning in conditions of dynamic changes in composition of produced hydrocarbon gas and productivity of fields.6 cl, 1 dwg

Hydrotechnical deferent tunnel with reinforced concrete lining // 2613461
FIELD: construction.SUBSTANCE: hydrotechnical deferent tunnel with reinforced concrete lining is designed as a working 1 in the rock with a cross section in the form of a figure of a constant width and in contact with the bearing reinforced concrete lining 2 with the external and the internal surfaces made in the cross-section in the form of a figure with a constant width. The cross-sections of the working 1, of the external surface in contact therewith, and of the internal surface of the reinforced concrete lining 2 are made in the form of a Reuleaux triangle. One of the coinciding corners 3 of the Reuleaux triangle of the working 1, the external and internal surfaces of the reinforced concrete lining 2 is located in the vault portion 4 of the tunnel with the reinforced concrete lining.EFFECT: increasing the strength, stability and reliability of the hydrotechnical deferent tunnel in complex engineering geological and seismic conditions.1 dwg

Device for interval formation treatment in open horizontal shaft of well // 2613405
FIELD: oil and gas industry.SUBSTANCE: device for interval formation treatment in an open horizontal shaft of well comprises the main packer with cup-type seal and feedthrough body, additional packer with additional cup-type seal and cylindrical bushing, a hollow shaft with radial channels connecting the feedthrough body of the main packer and a cylindrical bushing of the additional packer, placed at different length exceeding formation treatment interval, the length of the hollow shaft covers the treated formation interval in a horizontal well by the main and additional packers. Cup-type seals of the main and additional packers are made as the main and additional rubber inflatable elements with respective inner cavities interconnected hydraulically by a tube. A hollow bushing is telescopically inserted into the cylindrical bushing of the additional packer, it is equipped with a radial opening having in its initial position a hydraulic connection with inner cavity of the additional inflated rubber element of the additional packer by a circular rabetting and hydraulic channel made in the additional packer cylindrical bushing. The hollow bushing is provided with an annular groove outside and is supported by spring in upward direction in regards to the additional packer cylindrical bushing. A stopper is installed in the hollow bushing opposite its radial hole, it is fixed by destructible element in the initial position, a shear ring is fixed behind the stopper in the additional packer cylindrical bushing, having the opportunity to interact wit the stopper after the opening of the hollow shank radial hole. A hollow case is telescopically installed on the hollow bushing, equipped with an inner circular breakdown with a locking split ring installed in it. The hollow case is fixed in an initial position in regards to the hollow bushing by a shear pin. In the operating position after the destruction of the shear element the hollow bushing may be moved axially downwards in regard to the hollow body and cylindrical bushing of the auxiliary packer by compression of the spring, fixation of the locking split ring, installed in the inner circular breakdown of the hollow case, to the outer annular groove of the hollow bushing, tight cutoff of the radial surface of the hollow bushing by the additional packer cylindrical bushing, destruction of the shear ring fixed to the hole bushing with the stopper, movement of the hole bushing up to the stop to the inner step of the main packer feedthrough body with fluid communication through the radial openings in the hollow barrel to the treated bed.EFFECT: increasing operating efficiency of the device.3 dwg
ethod for formation water-gas simulation during oil deposits development // 2613404
FIELD: oil and gas industry.SUBSTANCE: according to the method, preliminary, on a hydrodynamic formation model target volumes are determined of alternating water and gas slugs for injection into the formation corresponding to the maximum value of the oil recovery factor. Then, a target gas slug volume is injected into the injection well. Then, the injection well is stopped before the pressure reduction in the well bore zone to the value of the average formation pressure at the time of termination of the gas injection into the formation, covered by the injection well influence. Further, the injection well is pumped the first part of the target water slug with a minimum technologically possible injectability to reduce gas saturation of the well bore zone to the value of residual gas saturation. This value is achieved upon stabilizing the injectability dynamics of on the formation. After that, the injection well is further pumped with the rest of the target water slug volume with maximum technologically possible injectability until recover of the formation pressure at the level of the initial value or above. The above pumping cycle is repeated in the oil deposit development.EFFECT: enhanced oil production.3 dwg, 3 tbl, 1 ex

ethod for hydraulic fracturing of formation in horizontal shaft of well // 2613403
FIELD: oil and gas industry.SUBSTANCE: method involves drilling of a horizontal shaft of the well in an oil-saturated part of the productive formation, lowering of the casing column into the horizontal shaft of the well and cementing of the annulus space between the casing column and the rock, performing hydromechanical perforation in all intervals of productive formation, extraction of the pipe string with hydromechanical perforator from the well, lowering of the pipe string with packer and performing interval HFT in the direction from the bottom to the wellhead in each perforated interval of casing column with a consequential abandonment of each interval. After drilling a horizontal shaft of the well, geophysical surveys are carried out and thickness and length of the oil-saturated intervals of the productive formation are determined, a map of oil-saturated intervals of productive formation is built according to the horizontal shaft of the well with an indication of their thicknesses and lengths, then hydromechanical perforation of the casing column is performed in the oil-saturated intervals of the productive formation. Pairs of perforations are made along the perimeter of the casing column in the direction from the bottom to the wellhead, positioned an angle of 180 relative to each other and with offset at an angle of 30 when producing each pair of the perforations. When the thickness of the productive formation oil-saturated interval is under 10 m HFT is performed using an acid gel without crack fixing, when the thickness of the productive formation oil-saturated interval is from 10 to 20 m HFT is performed using the hydrocarbon-based gel with fixing of tension crack by pumping the carrier fluid with proppant of 20/40 mesh fraction and concentration of 800 kg/m3, when the thickness of the productive formation oil-saturated interval is over 20 m HFT is performed using a cross-linked aqueous gel with fixing of tension fracture by pumping the carrier fluid with proppant of 12/18 mesh fraction and concentration of 1200 kg/m3.EFFECT: increased efficiency of hydraulic fracturing, simplified implementation process of hydraulic fracturing, improved reliability of hydraulic fracturing, increased coverage of productive formation with tension cracks.1 tbl, 6 dwg
Downhole device for simultaneous-separate pumping of agent // 2613398
FIELD: oil and gas industry.SUBSTANCE: downhole device comprises packers mounted at the compressor tubing column and module of flow control and metering of the injected agent of telecontrol system, including butterfly valves, combined by motor drive unit, telemetry sensors and a flow meter, the latter are positioned in the sealed sleeve cavities, arranged in parallel in the sealed casing bounded by direct flow multi-channel coupling from below and connected with geophysical cable passed through wellhead shut-off valve with instrumentation at the control station. The trunk of the upper packer is connected to the direct flow multi-channel coupling by the upper end and to the radially-running coupling by the lower end, there is a shank in the center hole of the radially-running coupling, interconnected to the one of the channels of direct flow multi-channel coupling by the end of a different close, which forms coaxial channels of separate agent pumping in the well layers with the trunk of the upper packer. Housing is limited by the intake manifold from above, connecting the cavity of compressor tubing column to sleeve cavities, wherefore an axial pup joint is designed in the electric wire unit block of chocke valves, connecting the compressor tubing column to a collector. A pressure sensor of the finishing agent is positioned at the pup joint input, connected to the geophysical cable with the control meter, placed at the control station, while locking seats interacting with throttle valves are mounted at the inputs of the diverging channels of the intake manifold.EFFECT: device design simplification and improved reliability of well operation.2 cl, 1 dwg
Downhole pulsator to create positive pressure impulses in the flashing fluid // 2613396
FIELD: mining.SUBSTANCE: downhole pulsator, to generate positive pressure impulses in the flashing fluid, contains pulsator shooting valve unit and pulsator duty valve unit. Pulsator shooting valve unit consists of the actuator housing, the cored solenoid, coupled with a spring-actuated rod and through the pin coupling with a shooting valve, which covers the hole in the bore bushing. The pulsator duty valve unit consists of a valve housing, a spring with a piston rod, bushed rod and slide valve, nozzle and feather. At that the blocks are performed as separated assembly units, coupled with clutch. At that the electromagnetic actuator of shooting valve, is combined with the pressure expansion joint and made tight against flashing fluid entry due to the fact that the spring-actuated movable rod of the shooting valve is located inside the oil-filled expansion joint, sealed by radial-flange locks.EFFECT: increase of reliability, power efficiency, manufacturability and assembly of the device.6 dwg

ethod of strong rocks hydraulic fracturing and combined facility for drilling and hydraulic fracturing of strong rock // 2613394
FIELD: mining.SUBSTANCE: method comprises well drilling, subsequent cutting of an initiating slit on its side surface, sealing the well region with the initiating slit and pumping working fluid into the sealed space under high pressure before hydraulic fracturing. These operations are performed with a combined facility for drilling and hydraulic fracturing of strong rocks comprising a housing consisting of a cup with a longitudinal window and a cutting element attached to the piston located inside the cup with the possibility of axial movement, while an adjustable back pressure valve is installed in the piston cavity. The housing is provided with a sleeve rigidly connected to the open part of the cup, and the bottom of the cup is equipped with a drill bit. A sealing element connected to the hydraulic cylinder is installed on the outer surface of the sleeve for sealing the well region with the initiating slit, and the piston has a rod with a valve located thereon and a stroke limiter. The valve is installed with the possibility to interact with the slide valve installed in the sleeve cavity to supply working fluid to the hydraulic cylinder through the holes in the sleeve.EFFECT: reducing the amount of equipment and the implementation timeframe of the method via reducing the number of operations for installation and dismantling of the well drilling equipment, cutting initiating slits, sealing wells and hydraulic fracturing.2 cl, 2 dwg

Automatic explosure isolation barrier // 2613393
FIELD: fire safety.SUBSTANCE: an automatic explosure isolation barrier is proposed. It comprises a control unit connected to the dispatcher through a communication line, cylinders filled with extinguishing agent, liquid and inhibitor spraying blocks and sensors. Furthermore the liquid spraying blocks are secured in openings around the perimeter and located in the sequence as follows: the first block for gaseous inhibitor spraying, connected to the cylinders with an inhibitor, and the second block for liquid spraying, connected to both permanently installed and autonomous water supply systems. The control unit is connected with the light and heat sensors and pressure sensor. Furthermore, the control unit and inhibitor cylinders are located in an explosion proof enclosure.EFFECT: increased level of protection during isolation of methane-air mixture and coal powder explosion sequentially using different action barriers.1 dwg
ethod of water shutoff works in well // 2613382
FIELD: oil industry.SUBSTANCE: invention relates to oil industry, namely to method of water shutoff works in well. Method includes stages, at which insulating compound is prepared in volume exceeding internal volume of well from bottomhole to upper border of perforation interval. Then filling pipe string is lowered into well, insulating compound is poured into well at least to upper border of perforation interval with flushing into formation. Wherein at different levels along perforation interval insulating compound with different values of mobility is poured. Filling pipe string is removed from well. Insulating compound is left to harden. After hardening of insulating compound insulating compound is drilled and formation is opened by sparing well perforation in roof part of formation.EFFECT: technical result is high efficiency and reliability of water shutoff in well.14 cl, 3 dwg

ethod for determining boundaries of water-cement between pipes in hydrocarbon well // 2613381
FIELD: oil and gas industry.SUBSTANCE: invention relates to the method for determining the water/cement boundaries in the annular space between two coaxial tubes in a hydrocarbon well. The process involves running of the well tool in the central pipe of the well, where the well tool comprises a housing and the pulse generator and signal register mounted in the tool housing; generating via the pulse generator of the excitation electromagnetic pulse and forcing thereby physical vibration in the central pipe of the well; registering via the signal register, acoustic signals reflected from the well; repetition of the generation and registration operations for various positions of the pulse generator along the well depth; transformation of the registered signals in the two-dimension form; filtering of the registered signals after transformation in order to identify a hyperbole in the two-dimensional representation as the vertex of the hyperbole is the water/cement boundary.EFFECT: invention improves the definition of the boundaries of water / cement in the annular space between two coaxial pipes in a hydrocarbon well.7 cl, 11 dwg

Self-regenerative integrated device for synergetic oxidation of low concentration gas and ventilation gas in coal mine // 2613378
FIELD: power engineering.SUBSTANCE: invention relates to energy saving in safety techniques for coal mines. Proposed self-regenerative integrated device for synergetic oxidation of a low concentration gas and a ventilation gas in a coal mine. Integrated device comprises metal shell (5) and oxidation layer (13) from ceramics in the form of cells, which is located inside metal shell (5) and is divided into regenerative section (40) and oxidation section (41) by means of heat exchange chamber (14). First cavity between regenerative section (40) and the inner wall of metal shell (5) is divided into first inlet chamber (6) and outlet chamber (8) by means of inlet separating partition (7), the second cavity between oxidation section (41) and the inner wall of metal shell (5) is divided into second inlet chamber (22) and mixing chamber (20) by means of separating partition (21) to average the gas and multiple gas-spraying nozzles (28) arranged on separating partition (21) to average the gas. Internal heat exchanger (35) is located inside chamber (14) of heat exchange, and inlet (16) of the heat exchanger and outlet (15) of the heat exchanger of internal heat exchanger (35) are connected to drum (18) of the boiler, respectively. First inlet chamber (6) is connected to inlet (1) of the ventilation gas via control valve (38) of proportional action, second inlet chamber (22) is connected to inlet (31) for extraction of the low concentration gas through mixer (33) of proportional action, and control valve (38) of proportional action is connected to mixer (33) of proportional action by means of connection pipeline (36). Two ends of pipe (9) for preliminary heating of the inlet gas on oxidation layer (13) from ceramics in the form of cells are connected, respectively, with first inlet chamber (6) and mixing chamber (20).EFFECT: technical result is providing high energy efficiency and reducing emissions of gas mixtures into the atmosphere.5 cl, 4 dwg

System of drilling parallel wells for original rock pressure applications // 2613377
FIELD: drilling soil or rock.SUBSTANCE: invention relates to directional drilling wells. In particular, proposed is a system for determining a distance and a direction to the target well from the second well, where drilling is performed, containing: a casing string arranged in at least part of the target well; a drill string in the well, where drilling is performed, herewith the drill string performs measurements during drilling; an electric current source intended for excitation of current supply to the target well by direct electric connection with the target well; and an electromagnetic field measuring instrument in the second well. Herewith the system comprises an insulated wire and a electrode both arranged as far as acceptable in the well for establishing electric contact with the casing string of the target well and an additional insulating section in the casing string to provide more current directed to the nearest measurement zone. Herewith the electromagnetic field measuring instrument responds to the electromagnetic field and to radial gradients of the electromagnetic field created by electric current in the target well.EFFECT: technical result is higher accuracy of determining the distance and the direction to the target well due to intensification of electromagnetic field in the target area of interest.31 cl, 9 dwg

onitoring borehole indexes by means of measuring system distributed along drill string // 2613374
FIELD: drilling soil or rock.SUBSTANCE: group of inventions relates to drilling operations, particularly, to distributed underground methods of measurements. Method of monitoring borehole indexes in a well passing through a formation includes placement in the well of a connected pipes string forming a borehole electromagnetic circuit ensuring creation of an electromagnetic signal channel between multiple sensors in the connected pipes string. Received through the borehole electromagnetic circuit is data from the first sensor of the said multiple sensors. Received through the borehole electromagnetic circuit is data from the second sensor of the said multiple sensors, which is located at a distance in the longitudinal direction from the first sensor in the connected pipes string. Compared are data of the first sensor and data of the second sensor. Conclusion is made on a borehole index basing on data from the sensors. Controlled is the borehole index basing on the said comparison by selective adjustment considering the said output of at least one parameter affecting the said borehole index. Herewith the selective adjustment of the said at least one parameter is performed unless the said borehole index corresponds to the target borehole index within a given range of errors.EFFECT: higher accuracy of obtained data and higher efficiency of controlling a borehole index or a borehole parameter basing on the obtained data.28 cl, 27 dwg

Injection for sampling heavy oil // 2613373
FIELD: chemistry.SUBSTANCE: invention relates to a method of sampling hydrocarbons of low viscosity. Method comprises conveying a downhole tool within a borehole extending into a subterranean formation, creating a void in a sidewall of borehole by extending a rotating member from downhole tool into sidewall, directing downhole tool inside borehole so as to create a cavity in a plane, having highest two types of pressure in well at depth of void, mechanically compressing a portion of sidewall surrounding void, reducing viscosity of hydrocarbons in subterranean formation proximate void by injecting a fluid from downhole tool into formation via void and drawing fluid, comprising reduced viscosity hydrocarbons from subterranean formation into downhole tool.EFFECT: technical result is reduction of pressure drop between artificially created gaps, void and downhole tool, when mixture of pumped liquid and low-viscosity oil is drawn into downhole tool.21 cl, 11 dwg

ethod of drilling tool geological steering and its trajectory control, while wells drilling in the specified direction // 2613364
FIELD: mining.SUBSTANCE: method includes monitoring of the drilling tool position in the inter-well space - inter-well pumping (IWP), while wells boring by means of a coordinate measuring system during the MWD drilling, at the same time apply the sensing method by transient buildup of the electric field in the near field region - EZS-B to calculate the electrical resistivity of rock to determine the position and unrecovered oil border, occupying the uncertain position in IWP, while providing the control of the drilling tool position in IWP, while wells boring in the real time mode, drilling toward the indicated unrecovered oil, taking into account the position and unrecovered oil location borders in IWP, being calculated by EZS-B method, and during the provided control, make remarks in the coordinate measuring system MWD for drilling tools guidance, providing the direction change in the drilling tools guidance forward the indicated unrecovered oil location.EFFECT: improved accuracy of the shaft foot guidance of the drilling horizontal well, pointing into the right direction, such as horizontal wells ducting to the unrecovered oil, the exact location of which is not defined in IWP.3 dwg
 
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