Earth or rock drilling and mining (E21)

E   Fixed constructions(157762)
E21            Earth or rock drilling; mining(78691)

ethod for balancing loads in bit with polycrystalline diamond equipment // 2628363
FIELD: construction.SUBSTANCE: according to method for balancing loads in a bit with polycrystalline diamond equipment having blades with PDC teeth fixed thereon and additional support elements for limiting the cutting depth, during the design process, the support elements are arranged on the blades in such a way that the maximum distance from the support elements to the bit axis Lmax satisfies the inequality Lmax<0.4⋅R, where R is the bit radius.EFFECT: reduced energy consumption of drilling and increased durability of the bit equipment.2 dwg

Cutting structures for a drill bit with fixed cutting tools // 2628359
FIELD: mining.SUBSTANCE: cutting tool comprises a tool body, a plurality of blades extending from the tool body, and a plurality of non-planar cutting elements on each of the plurality of blades. A plurality of non-planar cutting elements forms a cutting profile in the rotated form of said plurality of non-planar cutting elements in one plane. The cutting profile comprises a conical portion, a protruding portion, a shoulder portion and a calibration portion. Mentioned plurality of non-planar cutting elements comprise a first mould at least on a conical portion but not on a shoulder portion or a calibration portion and a second having an excellent shape on at least one of the protruding portion, the shoulder portion and the calibration portion but not on the conical portion site.EFFECT: ensuring an effective penetration rate and an acceptable bit life.19 cl, 22 dwg

Sealing in form of central protuberance for pipe connection // 2628356
FIELD: oil and gas industry.SUBSTANCE: metal-to-metal sealing system, connecting the first and the second pipe elements contains the first sealing configuration, disposed on the first pipe element and the second sealing configuration, disposed on the second pipe element. The first sealing configuration contains the first ring recess and the first ring tooth and the second sealing configuration contains the second ring recess and the second ring tooth. The second ring tooth is located within the first ring recess. The surface of the second ring tooth cooperates with the adjacent first ring protuberance surface, so as to define the first protuberance. The first ring tooth is located within the second ring recess. The surface of the first ring tooth cooperates with the adjacent second ring protuberance surface so as to define the second protuberance. The sections of the first sealing contact of the surfaces elements are axially spaced from the first and the second protuberances.EFFECT: effective sealing and problems preventing in the area of high loads of the deformable central protuberance in the pipe elements joints.23 cl, 5 dwg

ethod for producing formations with hard to recover hydrocarbon reserves // 2628343
FIELD: oil and gas industry.SUBSTANCE: according to the method the length of the won formation areas between the pairs of wellholes and the formation of technological lines of the formation parameter functions and fluids is predetermined byinclinometry data. Hydraulic fracturing of the formation is carried out between the pairs of wellholes forming the direct and crossing output channels. Gamma- and neutron logging are carried out while studying the well perforation zones. Continuous research of fractured areas under nominal and maximum operating pressures when pumping batches of marks is performed. The number of well plugging points in static characteristic function of the generating channels parameters is determined. The research of factures is finished and interfracture areas are plugged in the range of pressures between the pressures of hydraulic fracturing and operation before the second output channel occurs. Redefined research mode is installed. The number of well plugging points in dynamic characteristic function of output channels is specified and the underlying flows considering front coordinates of the formation water cut are described. Preliminary studies are carried out, when the movement of fluids to the front of the water cut in the tenth part of the output channel length can be described by Boussinesq approximation, and after him - by Dupuis-Forchheimer correlation. Similarly, research refinement is carried out when Poiseuille expression is used in the middle of the length of the output channel before the water cut. Research refinement mode is installed using the analytical expression of Dupuis-Forchheimer. Wherein, delivery of the marks and plugging materials express the dependence of Poiseuille to complete formation output. Interfracture areas are plugged due to permanence of output channels cross-section profiles. During high-viscosity fluids, delivery of marks and plugging materials with solvents in the interfracture intervals is confirmed by increased oil content in the output well. Poisson's ratio is used to describe the motion of fluids. Oil extraction starts from the crossing seam output channels.EFFECT: intensification of production and increasing coefficient of the production extraction from formation due to increasing the fromation coverage by filtration.5 cl, 2 tbl, 5 dwg

ethod for complex hydrogen thermo-barochemical processing of production formation // 2628342
FIELD: oil and gas industry.SUBSTANCE: method of complex hydrogen thermo-barochemical treatment of the bottomhole zone of a production formation includes separate and sequential delivery to the bottomhole through the tubing of hydro-reactive compositions based on aluminium hydride sodium composite and combustible-oxidizing compositions based on complex salts. The injection of the first mixture of combustible-oxidizing and hydro-reactive compounds with a density of 1.35-1.4 g/cm3 with filling of production string volume from bottomhole to lower perforations level. On top of the first mixture an aggregate-stable nanosuspension of hydro-reactive composition of density 1.23-1.25 g/cm3 with a content of 5-50% of the dispersed phase of aluminium hydride sodium composite in the dispersion medium of diesel fuel and organic solvent with quantitative content of the liquid phase components taken in proportional ratio providing the equality of the densities of the liquid and solid phases of nanosuspension which is injected at the predetermined value of formation porosity exceeding in the volume of the production string of the perforation zone interval followed by setting of aggregate-stable nanosuspension of hydroreactive composition directly to the bottomhole zone of the production formation. The second mixture of combustible-oxidizing and hydro-reactive compounds with a density of 1.6-1.8 g/cm3 in volume sufficient to effectively react with the first mixture of the fuel-oxidizing and hydro-reactive compounds.EFFECT: increase processing efficiency in order to increase the permeability of the bottomhole formation zone, reduce the skin factor and increase the performance of well, possibility to use it for hard-to-recover oil and gas reserves.2 cl, 3 dwg

echanical counting device for downhole tool, downhole tool with this device and fracturing method with its use // 2628114
FIELD: mining.SUBSTANCE: mechanical counting device is proposed to be installed in the downhole tool and comprises a tubular housing with a channel, the first set of projections on the tubular housing shifted radially relative to the channel of the tubular housing between the projected and radially retracted positions, the second set of projections on the tubular housing shifted radially relative to the channel of the tubular housing between the projected and radially retracted positions. The tubular housing is made with possibility to advance linearly over the tool in accordance with the object shifted on the tubular housing and consistently interacting with the first and second sets of projections. Versions of the downhole tool with this counting device are also provided and methods of operating it.EFFECT: downhole tool may be put in operation selectively.26 cl, 11 dwg

Belt haulage // 2627918
FIELD: transportation.SUBSTANCE: process of belt haulage of loose and concentrated ladlings is carried out using a conveyor having linear and transitional guides, end and intermediate drums, electric drives, chains. Transportation of ladlings is carried out by carriages moving on wheels along a rail track located on both sides of the conveyor above the level of its driving heads, and the carriages acquire the movement by engaging their elements with the buffer pushers of the conveyor.EFFECT: method allows to take advantages of a rail transportation with a track gauge width 1520 mm and moving along it freight carriage of high capacity and lifting power in mines, diggings, sections and quarries.6 dwg

Underwater system (versions) and method for multiphase media separation // 2627871
FIELD: oil and gas industry.SUBSTANCE: underwater separation system for multiphase media containing oil, water and sand, contains an inlet manifold (204), a divider (206), separate pipelines (208, 210) of similar diameter. An adjustment chamber (214) having larger diameter than the separate pipelines (208, 210) of similar diameter is connected to the ends of the separate pipelines (208, 210). The adjusting chamber (214) includes discharge pipelines (216, 218) and is made to correct the fluid flow rate at the discharge pipeline. A sand receiver (212) is connected to the separate pipelines (208, 210), which is located below one of the separate pipelines (208, 210). Inside one of the separate pipelines (208, 210) there is a jet nozzle, connected to the lower outlet pipeline of the adjastment chamber (214). The underwater separation system also includes a control valve and a control system. The multiphase fluid is passed through separate pipelines (208, 210) downstream of the divider (206) and separated into oil and water phases. The solid particles are separated. The water flow through the outlet channel at the lower end of the adjustment chamber (214), and the oil flow through the outlet at the upper end of the adjustment chamber (214) are provided. Water is injected into the receiver (212). A cyclone is formed to remove sand inside the receiver (212) and remove the stirred-up solid particles from the receiver (212) without stopping or slowing down the steps of multiphase fluid flow and its separation.EFFECT: invention allows to adjust flows in each line, reduce power consumption, increase the productivity of underwater well, and to create compact underwater separation system.17 cl, 6 dwg

ining tunnelling machine // 2627806
FIELD: mining engineering.SUBSTANCE: mining tunnel machine contains a movement mechanism, a frame, at least one cutting head. The cutting head comprises at least one cutting disc with a lateral cutting surface fixed to the lever. The lever is rotatable, and the cutting disc is located at an acute angle to the surface of the slaughtering.EFFECT: ensuring uniform removal of rock layers, reducing pressure on the breasts of the face due to the effect of screwing the actuator into the rock and eliminating the rotating loads on the combine when the cutting tool touches the surface of the slaughtering.4 cl, 3 dwg

ethod for chamber mining when preparing horizons // 2627803
FIELD: mining.SUBSTANCE: method of chamber mining when preparing horizons includes division of mine field into excavation areas, development of bed access drifts, extraction of mineral resources with stope chambers in advance or retreat order, delivery of ore with self-propelled equipment, transportation of ore using a conveyor, ventilation of stope chambers using local ventilation fan. Development of horizons is performed in turns, at first the upper horizon and then the lower one. Fresh air is fed through access drifts of the lower horizon, and the outgoing airstream is removed through access drifts of the upper horizon. The sill of the conveyor drift at the lower horizon is deepened relatively to the sill of the mining drifts. The upper horizon includes one transportation drift, and on the lower one includes the conveyor, from which entering the stope chambers is performed.EFFECT: invention allows to increase effectiveness of stope mining operations and reduce labor costs when extracting mineral resourses by eliminating development of ventilation holes and inter-chamber connections as well as to increase ventilation efficiency of the working area by arranging ventilation and removal of outgoing air stream from access drifts separately from the operation areas.3 cl, 5 dwg

System and method of cutting the window // 2627801
FIELD: mining engineering.SUBSTANCE: window cutting system for use in a subterranean well includes a window milling cutter having selectively retractable and extendable blades, and a wedge deflector assembly having at least one receiving portion. The window eraser is attached to the knuckle-wedge assembly by inserting said blades into said receiving portion. When the window opening method is performed in the underground well fixation, the hole fastening is cut through a window milling cutter, retracts the milling cutter blades to expose the windows, and extends the blades in the knuckle assembly, thereby affixing the wedge-deflector assembly to the window milling cutter.EFFECT: reduction of tripping operations.22 cl, 8 dwg
Recovery method for oil-source reservoirs by the controlled multi-stage hydraulic fracture // 2627799
FIELD: oil and gas industry.SUBSTANCE: invention can be applied in the development of oil-source reservoirs managed using a controlled multi-stage hydraulic fracturing (MHF). To isolate high permeability zones and fractures, the method comprises applying in the wells of injection of mixture of surfactants, polyacrylamide (PAA), a stapler - chromium acetate, filler and water, well subjecting to process exposure, products selection from wells. According to the invention, a low-permeability reservoir is selected with an average absolute permeability of less than 2 mD, which are used for drilling, or already drilled horizontal sidetrack wells are used. In each of such wells, the first MHF is performed, during which the fracture propagation area is recorded by means of low-frequency seismic survey. Packers separate the horizontal wellbores into sections, then the wells with conducted MHF are injected, through each horizontal wellbore section, with insulating composition with the following component ratio, wt %: SAW - 0.2-5.0, PAA - 0.005-2.5, chromium acetate - 0.01-1.0, filler - 0.5-15.0, water with a salinity of less than 1.5 g/l - the rest. After the soak period during 1-10 days and colmatation of fractures after the first HF, the second HF is conducted in the same wells by the pumped insulation compound, during which fracture propagation is also recorded by means of the low-frequency seismic survey. Upon obtaining data on fractures distribution after the first and the second MHF, a decision is made on performance in these injection wells of subsequent phases of insulating composition injection and MHF conducting. Moreover, the number of subsequent MHF is determined based on the full reservoir coverage with MHF fracture zones both in plan and in profile around each horizontal wellbore. After all MHF, the reservoir is processed by separate injection in each stage of the horizontal wellbores of the insulating composition solvent in a volume of 0.8-2.0 from the total volumes previously pumped insulating compositions to this satge of the horizontal wellbore.EFFECT: increasing of the coverage factor and oil production of the oil-source reservoirs.

ethod of pumping oil production with high gas factor // 2627797
FIELD: oil and gas industry.SUBSTANCE: lateral hole is drilled below the dynamic fluid level in the mother bore by the method. The slaughter of the mother bore is cemented and equipment is lowered into it. The shank and the deep pump are lowered into the mother bore below the lateral hole insert. They are located above the lateral hole hookup. The annular space of the well is connected to the upper part of the head tank and the flow header located at the wellhead. The lower part of the head tanks is connected to a pump, the receiving part of which is connected to the supply container for the working fluid. The pumping out of the accumulating gas from the annular space is periodically performed by means of a pump that is turned on to supply the working fluid to the delivery tank with gas in the cycle of its injection into the flow header and that is turned off to drain the working fluid from the delivery tank into the delivery tank feeding in the cycle of gas supply from the annular space.EFFECT: increased efficiency of the separated gas selection from the annular space of the well and its injection into the header.1 dwg

Bitumnious oil field development method // 2627795
FIELD: mining.SUBSTANCE: bituminous oil filed development method includes construction of production and injection wells with horizontal sections located one above the other in productive reservoir stratum, injection of water vapor into both wells to create permeable zone between horizontal sections, injection of water vapor into the upper injection well and extraction of products from the lower production well. And before commencement of construction, the filed is studied to select areas with gas caps, horizontal sections of the wells are located below the gas cap, and pressure control devices are installed in the wells during construction. Steam injection into both wells and then into the injection well is performed at a pressure not exceeding the pressure in the gas cap.EFFECT: increase in the oil recovery factor in fileds with gas caps, while reducing costs by eliminating the outbreak of heat carrier into gas caps.1 dwg, 1 ex

Device and method of producing carbon-containing substances from oil sand // 2627791
FIELD: oil and gas industry.SUBSTANCE: device contains at least two separate steam circuits. The first steam circuit comprises at least one first steam generator and the steam turbine (3) connected to the first steam generator with the intermediate steam sampling. The second steam circuit comprises at least one second steam generator, in particular in the form of the first heat exchanger, the injection conduit, the product pipeline and the water treatment plant. Wherein steam is fed into oil sand via the injection pipeline. Carbon-containing substances are withdrawn from the oil sand via the product pipeline. Bitumen is separated from water in the water treatment plant. Wherein the intermediate steam sampling from the first steam circuit is in kinematic connection with the first heat exchanger of the second steam circuit.EFFECT: Increasing the production efficiency of carbon-containing substances.6 cl, 1 dwg

ethod and liquid for improvement of permeability of sandstone formations by chelating agent // 2627787
FIELD: oil and gas industry.SUBSTANCE: sandstone formation treatment method includes injecting into the formation a fluid containing 5-30% by weight of the total amount of glutamic liquid N,N-diacetic acid or its salt (GLDA), 0.1-2% by volume of corrosion inhibitor, 0.01-5 % by volume of surfactant and, optionally, a common solvent. The surfactant is a non-ionic or anionic surfactant and has a pH value of between 1 and 14.EFFECT: improved permeability of sandstone formations, biodegradability and high acidity without the formation of processing fluid scale.20 cl, 9 dwg, 3 tbl, 10 ex
Plastic composition for formation water inflow insulation in well and stabilizing of producing formation and method of its application // 2627786
FIELD: oil and gas industry.SUBSTANCE: method of formation water inflow insulation in the well and stabilising of the producing formation is to inject the silicon containing composition with the aqueous solution of the inorganic cross-linker and the plasticiser, while the organosilicone oil soluble or water soluble substance or silicone based substance is used as the silicone containing substance with the following component ratio, wt %: 55-89 of the organosilicone oil soluble or water soluble substance or silicone nonorganic substance, 10-40 of nonorganic crosslinker water solution, plasticiser 1-5.EFFECT: improvement of the formation water inflow insulation in the well and stabilising of producing formation with the adjustable mechanism for curing of the injected composition at low and high temperatures.4 cl, 5 tbl, 5 ex
ethod for regulating intake capacity profile of pressure well (versions) // 2627785
FIELD: oil and gas industry.SUBSTANCE: method for regulating intake capacity profile of a pressure well, including the preparation and injection of gel-forming composition into formation, comprising xanthan, chromium acetate, surfactant - SAS and water, and a process exposure for formation of gel, the intake capacity of the pressure well is predetermined. According to the first one version, with intake capacity of 150-300 m3/day before injecting the gel-forming agent, perform injection of aqueous solution rim of alkaline reagent with a concentration of 0.05-5.0 wt % of 5-10 m3 in volume, then the gel-forming composition is added, additionally comprising a bactericide-formalin or glutaraldehyde, with a content of components, wt %: xanthan - 0.2-0.4, chromium acetate - 0.02-0.04, surfactant - 0.1-0.2, bactericide - 0.05-2.0, the rest is fresh water. After that inject aqueous solution rim of alkaline reagent and a surfactant containing, wt %: alkaline reagent - 0.1-2.0, surfactant - 0.005-3.0, the rest is water with mineralization 0.15-300 g/l, at volume ratio of gel-forming composition to aqueous solution rim of alkaline reagent and surfactant, chosen depending on the intake capaity of the pressure well and equal to 1: (0.5÷3), force said rim into the formation with water with mineralization of 0.15-300 g/l in a volume of 10-15 m3 and stop the well for a technological exposure for 2 to 5 days. According to the second version, with intake capacity of 300-500 m3/day before injecting the gel-forming agent, an aqueous solution rim of an alkaline reagent with a concentration of 0.05-5.0 wt % of 10-20 m3 in volume, inject a gel-forming composition, additionally comprising a bactericide-formalin or glutaraldehyde, with a content of components, wt %: xanthan - 0.3-1.0, chromate acetate - 0.03-0.1, surfactant - 0.15-2.0, bactericide - 0.05-2.0, the rest is fresh water. After that inject aqueous solution rim of alkaline reagent and surfactant at their content, wt %: alkaline reagent - 0.1-2.0, surfactant - 0.005-3.0, the rest is water with mineralization 0.15-300 g/l, at the volume ratio of gel-forming composition to said rim, chosen depending on the intake capacity of the pressure well and equal to 1:(2÷4), force said rim into the formation with water with mineralization of 0.15-300 g/l in a volume of 10-15 m3 and stop the well for a technological exposure for 2 to 5 days. According to the third version, with intake capacity of 500-600 m3/day preliminary inject 50-100m of a dispersion composition rim into the formation, then an aqueous solution rim of alkaline reagent with concentration of 0.05-5.0 wt % of 20-30 m3 in volume, after that inject gel-forming composition, additionally comprising a bactericide-formalin or glutaraldehyde and a polymer, with a content of components, wt %: xanthan - 0.5-2.0, chromate acetate - 0.05-0.2, surfactant - 0.5-4.0, bactericide - 0.05-2.0, polymer - 0.1-1.0, the rest is fresh water. After injecting the gel-forming agent, perform injection of aqueous solution rim of alkaline reagent and surfactant at their content, wt %: alkaline reagent - 0.1-2.0, surfactant - 0.005-3.0, the rest is water with mineralization of 0.15-300 g/l, at the volume ratio of gel-forming composition to said rim, chosen depending on the on the intake capacity of the pressure well and equal to 1:3, force said rim into the formation with water with mineralization of 0.15-300 g/l in volume of 10-15 m3 and stop the well for a technological exposure for 4 to 12 days. Use sodium hydroxide or trisodium phosphate, or sodium liquid glass as alkaline reagent, a dispersed composition rim as aqueous dispersion of the filler with a concentration of 0.01-10.0 wt % or an aqueous dispersion of the filler and polymer with a component ratio, wt %: filler - 0.01-10, polymer - 0.005-1.0, the rest is water with mineralization 0.15-300 g/l, dolomite or wood flour, or bentonite clay powder used as a filler, as polymer - polyacrylamide or sodium carboxymethylcellulose, or hydroxyethylcellulose, said oxyethylated alkylphenols used as surfactant.EFFECT: increased formation recovery, increased efficiency of formation coverage with impact and expansion of technological capabilities of the method.3 cl, 4 tbl

Arrangement of connecting pipe nozzle // 2627783
FIELD: construction.SUBSTANCE: projecting inner tubular part is formed in the connecting pipe nozzle arrangement, which forms the installation chamber inside the screw connecting part of the nozzle body. The lock nut is in threaded connection with the coupling ring, which is pre-installed inside the screw connection part. A screw part is formed on the outer periphery of the coupling ring, so that threaded connection between the coupling ring and the lock nut inside it is provided. A slope is formed on the outer side of the coupling ring, so that this slope is connected to the slope formed inside the lock nut.EFFECT: simple and efficient assembly of the nozzle bodies without the need to disassemble the lock nut in the process of locksmith works.5 cl, 10 dwg

Downhole electrical connector // 2627782
FIELD: mining.SUBSTANCE: proposed the electrical connector unit, installed in the borehole and containing: the upper longitudinal element with the electrical conductor, the lower longitudinal element, containing the electrical conductor, the telescopic electrically conductive unit and the electrical contact element, disposed around the end part of the lower longitudinal element electrical conductor and configured with ability of mobile contact to it. In this case, the telescopic electrically conductive unit contains the longitudinal receiving part at the end part of the upper longitudinal element electrical conductor. The longitudinal receiving part is located around the end part of the electrical conductor of the lower longitudinal element. The indicated contact element is configured with ability of mobile contact to the inner surface of the longitudinal receiving part of the upper longitudinal member.EFFECT: provision of electricity or signals reliable transmission with possible changes of the cable length.12 cl 9 dwg

Insert impact device for core sampling // 2627781
FIELD: mining engineering.SUBSTANCE: core sampling device comprises a rotating tubular body, a core bit fixed for rotation with the body and axially movable relative to the rotating tubular body, a retrievable core assembly, configured to be fixed to the rotating tubular body or relative thereof. The retrievable core sampling assembly comprises a stem of the core grabber for the core, made separate from the tubular body to avoid rotation with it and working in conjunction with the core bit for holding the core and a percussion device to provide impact on the core bit according to the longitudinal impact transmission system, disconnected or substantially disconnected from core grabber stem. The pipe body is made with bit rotation function. The impact device is designed with the capability to apply impacts on the bit to retrieve and deliver core material from the formation to the core grabber stem in core stem insulation mode to guard from rotational and impact forces.EFFECT: accelerated sampling of high-quality core samples.10 cl, 4 dwg

Decomposable and adjustable metallic packing and its production technique // 2627779
FIELD: mining engineering.SUBSTANCE: packing comprises a plymetal. A plymetal comprises a cellular nanomatrix which has a metalliferous material of a nanomatrix, a metallic matrix that is housed within the cellular nanomatrix, and a degradative agent housed within the metallic matrix. A degradative agent comprises: cobalt, copper, ferrum, nickel, wolframium or the combination that includes at least one of the above-mentioned. A packing comprises the first packing surface and the second packing surface that is placed oppositely to the first packing surface. A metalliferous material of a nanomatrix, a metallic matrix and a degradative agent are selected in such a way that the packing is designed to form a metal-to-metal seal in return for contractive force application. A packing can be made by dint of the metallic matrix, degradative agent and metalliferous material of a nanomatrix powder combination with the composition formation; of the consolidation of the composition with compacted composition formation; of the compacted composition agglomeration; and of the compression moulding of the sintered composition with the packing formation.EFFECT: exclusion of the elements or tools removal from the borehole.24 cl, 18 dwg

Downhole tools for determining the side branches // 2627778
FIELD: mining.SUBSTANCE: downhole tool is proposed for determining the side branches in the borehole wall or in the borehole casing string, containing: the tool body configured to be lowered into the borehole and the plurality of acoustic transponders. Each acoustic transponder is designed to transmit the acoustic signals from the housing and receive the acoustic signals, reflected from the wall of the borehole or the borehole casing string in the predetermined angular segment, different from the predetermined angular segments, corresponding to the other acoustic transponders from the plurality of acoustic transponders. The plurality of acoustic transponders is disposed along the tool body periphery at the distance from each other and are configured to transmit acoustic signals in the radial direction from the tool body along the whole central angle of 360 degrees to the borehole wall or to the borehole casing string. At that during using, only the part from the acoustic transponders plurality within the impulse time transmits the acoustic signal in the predetermined angular segments of one or more transmitting acoustic transponders, wherein at least one acoustic transponder from the plurality of acoustic transponders receives for the subsequent predetermined duration of the echo time, the acoustic signal from the borehole wall or the borehole casing string. In this case, the absence of the received reflected acoustic signal during the subsequent predetermined duration of the echo-time indicates the presence of the lateral branch.EFFECT: increase of the measurements reliability by increasing the device resolution.22 cl, 10 dwg

Pump rod // 2627777
FIELD: oil and gas industry.SUBSTANCE: pump rod consists of a fiberglass stem with conical surface and a tip consisting of a body with conical surface and clamping elements (sliding blocks) installed between the cone-shaped surfaces of the fiberglass stem and the body. A connecting portion with a thread is made in the tip body.EFFECT: increased reliability of the fiberglass stem and tip connection, increased strength of the pumping rod.6 cl, 2 dwg

ethod for aquatic gas-hydrate deposit development // 2627776
FIELD: oil and gas industry.SUBSTANCE: in the process of aquatic gas-hydrate deposit development, the gas accumulates and undergoes primary treatment on a platform (or on a ship) equipped with a tubing pipe, a pipeline with special tanks for distribution and supply of water, a water preparation unit, measuring devices for monitoring the supply of water and the particles destroying the deposit, a collection bell, a pipeline for selecting the formed gas mixture, instruments for monitoring the pumping-out system of the formed product (gas mixture), then it is transported to the methane offshore catch basin. Spherical nanoparticles are used as a working tool that destroys gas hydrates.EFFECT: increased efficiency of aqual gas hydrates extraction.1 dwg

Inclinator assembly for auxiliary wellbore // 2627774
FIELD: mining.SUBSTANCE: inclinator assembly comprises an upper inclinator disposed inside the main wellbore and defining first and second channels that extend longitudinally through the upper inclinator, the second channel has a wider width than the width of the first channel; and a lower inclinator disposed inside the main wellbore and spaced from the upper inclinator by a predetermined distance, the lower inclinator defines the first passage that is connected to the lower part of the main wellbore and the second passage that is connected to the auxiliary wellbore. These upper and lower inclinators are configured to guide the assembly with the rounded head to the auxiliary wellbore or to the lower part of the main wellbore, depending on the length of the tip with the rounded head of the assembly with the rounded head compared to the predetermined distance.EFFECT: faultless direction of the rounded head unit to the main wellbore or the side wellbore.19 cl, 23 dwg

Core box // 2627773
FIELD: packaging industry.SUBSTANCE: core box includes a body containing at least one channel configured to store at least one core sample. The body includes a set of handles built into the core box edge and provided both along its short and long axes. The handles of each set are disposed adjacent to each other and are configured, to provide core box capture to assist in core box moving while in use.EFFECT: convenient and easy grip for easy moving, repositioning or carrying of core boxes with a possibility of their compact storage.11 cl, 19 dwg

Protector for power cable safety in well // 2627523
FIELD: oil and gas industry.SUBSTANCE: protector for the power cable safety in the well contains the housing with the longitudinal cable channel and two clamps. There are transverse grooves in the body from both sides. And the body lateral guides are made in the form of the radius beds to the size of tubing string (TS). The lateral guides are reinforced with the transverse ribs, located along the sides of the transverse grooves. The clamps are made in the form of the tape inserted into the transverse grooves of the body, and are tensioned and clamped into the lock by means of the special device.EFFECT: structure simplification and increase of its reliability.2 cl, dwg

Detonation transmission unit of cumulative perforator // 2627521
FIELD: oil and gas industry.SUBSTANCE: detonation transmitiom unit of the cumulative perforator comprises an inner coupling, a lodgment bushing of the detonation transmition unit with detonating cord segments connecting the perforator sections. The segments of the detonating cord in the lodgment bushing are overlapped and communicated by lateral surfaces for a length of at least 30 mm, the lodgment bushing is in the form of a cylinder with two holes from the ends. One hole has a diameter larger than the diameter of the utilised detonating cord and has an inlet conical part, and a hole of the opposing end transforms into a keyseat with a width larger then the width of the utilised detonating cord.EFFECT: increased reliability of the detonation transmission in the section junction unit, reduced size of the unit and simplified design.3 cl, 2 dwg
Combined method for tubing cleaning and device for its implementation // 2627520
FIELD: oil and gas industry.SUBSTANCE: group of inventions relate to tubing cleaning equipment for oil and gas wells from deposits of asphaltenes, resins, wax, hydrates, calcium salts (asphalt-resin-wax deposits) and etc. without extraction of the tubing from wells. This device can be used also for cleaning water-producing and other wells. Cleaning of the tubing internal surface is performed due to combined impact (ultrasonic, mechanical, thermal) on the contamination. Due to uninterrupted operation of the well, the mud grinded by combined impact is lifted to the surface and removed from the well by the fluid flow. The ultrasonic cleaning unit for tubing consists of ultrasonic generator and a downhole ultrasonic scraper, which is a converter of electrical vibrations into mechanical ones placed in a protective casing, connected to oscillation transformer that amplifies the oscillation amplitude of the ultrasonic radiators.EFFECT: improved performance and cost effectiveness of the tubing cleaning operation.12 cl, 3 dwg

Drilling bit // 2627513
FIELD: mining engineering.SUBSTANCE: drill bit comprises a hollow body with flushing channels and a stepped slot, a hard-alloy plate with a mandrel provided with a recess on the upper side surface located therein and a stopper rigidly connected to the body with a bushing for mandrel. The mandrel is made with an inclined end and a protrusion on the lateral surface, the body is provided with a responsive slots for mandrel protrusion, and the stopper is in the form of a stepped rod with an inclined end located in the collar and spring-biased in the axial direction, which interacts with the inclined end of the mandrel.EFFECT: simplification of drilling bit installation technology.2 dwg

Extracted depth reference benchmark // 2627503
FIELD: mining engineering.SUBSTANCE: extracted depth reference benchmark includes an estuarial tube, base and locking plugs connected to the indicators by steel cables. In this case, the estuarial tube is made of galvanized spring material along the diameter of hole, has a slot for its easy insertion into hole, protrudes on the 50-70 mm from hole to the level of fixing the worked out space in light and is the reference point for roof displacement for base and locking indicators. Base and locking plugs are made of spring wire, rolled up in the form of spirals with diameter D=8-10 mm with diluted ends of length L=12-14 mm at an angle α=145-155°, directed into the depth of hole. At the same time, the carrier steel cables of displacement indicators are pivotally mounted on the lower part of the spirals, keeping them on weight; and on the upper part ropes for extracting the plug from hole are mounted, the lower ends of which are fixed on corresponding displacement indicators diametrically opposite to the carrier cables, and have different colours. Displacement indicators are performed from the tubes entering into each other in the sequence of open-casts arrangement, have measuring scales, and, at the ends, openings for releasing and securing ends of cables and adjusting the position of indicator relative to estuarial tube.EFFECT: simplification of measurements and design of reference benchmark and possibility of its reuse.2 dwg
Development method of non-homogeneous oil formation with use of polymer-dispersed composition // 2627502
FIELD: oil and gas industry.SUBSTANCE: in a development method of non-homogeneous oil formation comprising injecting an aqueous polymer dispersion containing polyacrylamide-PAA, a cross-linking agent and a micro-reinforcing additive into the well, and squeezing it to the formation with water, a polymer composition containing, wt %: partially hydrolysed PAA 12.00-17.00, microsilica or microcalcite is the rest, chromium (III) acetate or a cross-linking composition is used as a cross-linking agent, wt %: chrome (III) acetate 2.00-10.00 and 20.0-23.0% hydrochloric acid is the rest, the noted composition being obtained by introducing into the water of fresh or mineralized water with a density of up to 1.012 g/cm3 of the noted polymer composition containing microsilica, while stirring it to complete hydration of the PAA and then introducing a chromium (III) acetate crosslinking agent or the noted cross-linking composition upon pumping into the well, with the following component ratio, wt %: the noted polymeric composition containing microsilica 1.0-7.0, chromium (III) acetate 0.01-0.1 or the noted cross-linking composition 0.5-1.5, the noted water is the rest, or introducing into the water of fresh or mineralized water with a density of up to 1.012 g/cm3 of the noted polymeric composition containing a microcalcite, while stirring it to complete hydration of the PAA and then introducing a chromium (III) acetate crosslinking agent upon pumping into the well, at the following component ratio, wt %: the noted polymer composition containing a microcalcite of 1.0-7.0, chromium (III) acetate 0.01-0.1, the noted water is the rest.EFFECT: increased homogeneity of the composition and provided possibility of adjusting the cross-linking time.2 tbl, 9 ex

Cutter-loader // 2627348
FIELD: mining.SUBSTANCE: mining combine includes chassis, frame, at least one actuator, an upper bump device and a lower demolition device. The lower demolition device consists of two cutting units. Each of the units contains a support in which a gearbox is provided, equipped with a drive. On the output shaft of the reducer rigid - end and hinged - central cutting drums are fixed, with the possibility of transferring the torque. The central cutting drums are mounted coaxially on the common shaft.EFFECT: power reduction of drive hubs.3 dwg

Development method of high-viscosity oil or bitumen deposit with application of hydraulic fracture // 2627345
FIELD: oil and gas industry.SUBSTANCE: development method of high viscosity oil or bitumen deposit, using hydraulic fracture (HF) involves drilling the vertical and horizontal wells in the reservoir, represented by the upper and lower parts of the productive reservoir, separated by the impermeable interlayer, cementation of the injection and production horizontal wells with the casing strings, the casing strings perforation, the coolant pumping through the injection well and the selection of products through the production horizontal well. One exploring vertical well is drilled in the deposit with the impermeable interlayer opening and the bottomhole at 3m below the impermeable interlayer. In the exploring vertical well the hydraulic fracturing is performed in the interval of the impermeable interlayer with the formation and cementation of the fracture. Then according to the geophysical methods determine the development direction along the azimuth and the fracture height. Further perpendicular to the fracture development direction at the distance 5 m above the impermeable interlayer one injection horizontal well is drilled without crossing the exploring vertical well, so that the exploring vertical well is in the middle of the horizontal injection well, after that perform the interval fracturing from the injection horizontal well in the direction from the bottomhole to the wellhead with the impermeable interlayer opening, with the formation and cementation of fracture, using the lightweight proppant. After performing the interval fracturing, determine the half-lengths of the fractures, made from the injection horizontal well by geophysical methods. Further below the bottomhole of the exploring vertical well and at the distance of 3 m from the fracture, having the maximum half-length, one production horizontal well is drilled parallel to the injection horizontal well, provide the coolant pumping through the horizontal injection well, and the high-viscosity oil or bitumen is selected through the production horizontal well. After reduction of the production horizontal well recovery rate by 50%, the exploring vertical well is transferred to the injection well and provide the coolant pumping into it.EFFECT: increase of the method implementation efficiency, provision of the uniform and complete development of high-viscosity oil or bitumen reserves from the deposit, increase of the deposit coverage by the thermal action of the coolant, reduction of the operating costs for the method implementation.3 dwg

Cutter-loader // 2627341
FIELD: mining engineering.SUBSTANCE: cutter-loader comprises a travel mechanism, a frame with at least two actuators, each containing at least one rotating cutting head fixed to its handle and drivers of their rotation. The actuator and cutting heads rotation drivers are in the form of two-rotor modules comprising a central drive gear and two coaxially rotatable independently rotors interconnected through the central drive gears via a synchronization mechanism that enables to adjust the position of the actuators with the handles against each other. The two-rotor modules and synchronization mechanism are integrated into a single unit where the distance between the central axes of the two-rotor modules should exceed the sum of the radius of the cutting head with the handle and the rotor module radius.EFFECT: rotation of the actuator and the cutting heads is ensured during drilling process.2 dwg

Cutter-loader // 2627340
FIELD: mining.SUBSTANCE: cutter-loader includes a chassis, a frame, two rotary actuators with a center-to-center distance and the radius of the described contour when rotating by one executive body, two demolition devices located in the lower and upper parts. The length of the drum of the upper bump device is in the range 0.9-1.1 of the center-to-center distance between the rotating actuators. The drums of the lower demolition device are made composite, the end parts are equipped with berm cutters. The diameter of berm cutters depends on the length of the drum of the lower baffle device. Drum diameter of top hammer device and diameter of end mills meet certain mathematical expressions.EFFECT: formation of the optimal form of production.2 cl, 4 dwg

Cutter-loader // 2627339
FIELD: mining.SUBSTANCE: cutter-loader includes chassis, conveyor, executive body, two pneumatic device, located in the lower and upper parts, holding-down bolt. The holding-down bolt consists of spacing frame racks which housed in the gaps between the conveyor and the executive body and guides with holding-down heads, hinged racks attached to the frame. Moreover, the spacer frame is hingedly mounted on hydraulic cylinders fixed on the conveyor or the executive body, ensuring the frame and retention of the frame with the guides when the combine moves. The axes of rotation of the guides are directed along the movement of the combine to the face.EFFECT: ability to drill on the go and adjust the distance between the holes within the possible drilling zones.2 dwg

Solid carbonate oil deposits development method // 2627338
FIELD: oil and gas industry.SUBSTANCE: invention can be applied to develop powerful solid carbonate oil deposits using multistage hydraulic fracturing (MHF) into acid-gravity drainage mode (AGD). The method includes drilling of wells with horizontal tailing-in (WHT), cementing of an annular space between a production casing and a reservoir in a horizontal bore, secondary deposit penetration with the orientation direction of perforations in one row, carrying out of multistage hydraulic fracturing, packers application for separation of horizontal shaft into sites, and product extraction from the horizontal wells. According to the invention, a deposit is selected with an average thickness of the oil-saturated reservoir H ≥ 50 m and an average absolute permeability not more than 2 mD, the deposit is drilled with pairs of WHT, whose bores are arranged parallel in the vertical plane at a vertically distance h=(0.5-0.9)⋅H, with the upper WHT being completed with two horizontal bores parting at angle β=30-60°, the lower WHT is completed with one horizontal bore directed perpendicular to the vector of the main maximum collector voltage and being the bisector of the angle β in the plan. The length of each horizontal bore is made equal to l≥4⋅h. At the top of the WHT at each horizontal, bore perforations are oriented downward, and the horizontal bore of the lower WHT - upward. All wells are subject to the acid multistage hydraulic fracturing with the distance between the stages of no more than 50 m. Moreover, the location of each corresponding multistage hydraulic fracturing in the upper and lower wells does not match structurally. The rate and volume of injected acid is determined from the conditions, firstly, of forming a carbonate dissolution structure, being branched cavities, secondly, fractures half-length a=(0.2-1.0)⋅l⋅sin(β/2) and fractures height c=(0.5-1.0)⋅h. After MHF, the lower WHT are completed and started up for production. With each decrease in the oil production rate of the lower production wells below the economically viable value, in the respective upper injection wells, large-volume acid treatments are carried out. Wherein, prior to acid feeding, in the injection well, water is pumped with total mineralization of not more than 1 g/l and particles resistant to used acids impact, with diameters greater than the average diameter of pore collector channels, water with particles is injected as long as the injection pressure does not grow at least five times, thus, the deposit is developed in AGD mode.EFFECT: enhanced oil recovery of powerful solid carbonate oil deposits.2 dwg
ountain tunnelling machine actuator // 2627337
FIELD: mining engineering.SUBSTANCE: executive organ of the mountain tunnelling machine comprises at least one cutting disc that is rotatably supported on the lever and located at an acute angle to the face. The lever is rotatably mounted. The axis of rotation of the lever is able to move.EFFECT: ensuring the uniform removal of rock layers, the ability to process a large area of the face with a smaller number of cutting tools and eliminate the dependence of the diameter of the discs on the dimensions of the workings.6 cl, 2 dwg
ethod of developing low permeable reservoir by periodic injection of carbon dioxide gas // 2627336
FIELD: oil and gas industry.SUBSTANCE: in the method of developing low permeable reservoirs by periodic injection of carbon dioxide gas, wells with a horizontal end of the bore diameter of 5-7 inches are chosen, which tap the reservoir with an average absolute permeability from 0.001 mD to 2 mD, or lateral horizontal bores are drilled from vertical wells which tap the reservoir with the mentioned permeability. All wells must be production wells. In each of the wells, a pump is lowered to the central part of the horizontal bore on the main pipe string, through which product selection is carried out, after a period of operation and achievement of the condition qf ≤ 0.5·qf0 at Psat ≤ Pb ≤ 0.3·Pf0, where qf is the current fluid production rate of the well, qf0 is the initial fluid production rate after the well is put into production before the appropriate cycle of selection-injection, Pb is the current bottom-hole pressure, Pf0 is the initial formation pressure, Psat is the pressure of oil saturation with hydrocarbon gas, an additional pipe string is lowered to the horizontal bore, with a diameter of 1-2 inches with a filter, which length is not less than half the length of the horizontal bore. An additional pipe string is sealed above the upper boundary of the productive formation. If it is necessary, the main pipe string is changed to a string of such diameter, which makes it possible to carry out round-trip operations of each of the pipe strings separately. A working agent is pumped through the additional pipe string, carbon dioxide - CO2 is used as the working agent, injection of CO2 is carried out with a gradual increase in consumption from 0 to qinjmax, where qinjmax is the maximum consumption of CO2 at injection pressure Pinj = (0.6-0.9) ·Pr, where Pr is a vertical rock pressure, when qinjmax is reached, the injection is stopped and the well is left to redistribute the pressure in the reservoir for 5-50 days. After that, the well is put into production through an additional pipe string. The fluid production rate is increased gradually from 0 to (0.5-0.9) qprodmax, where qprodmax is the maximum fluid production rate at bottomhole pressure, equal to Psat, the cycles of injection, waiting and selection are repeated.EFFECT: oil recovery of low permeable carbonate reservoirs increase.1 dwg, 1 ex
Double type speed control mechanism for turbine // 2627332
FIELD: mining.SUBSTANCE: system includes a housing, a variable fluid flow conduit disposed inside the housing, an electromagnet connected to the housing, a fluid driven actuator fluidly connected to a variable fluid flow conduit, a load generating unit connected to a drive mechanism controlled by the fluid. The load generating unit comprises a mixing blade and a shaft connected to the mixing blade. The shaft is located in one of the electrorheological fluid and the magnetorheological fluid. The viscosity of the mentioned media can be changed by means of an electromagnet.EFFECT: reliability of the control system is increased, the accuracy and speed of the turbine rotation control are increased.18 cl, 7 dwg

Well bend conditions evaluation and calibration // 2627329
FIELD: oil and gas industry.SUBSTANCE: method of transmission efficiency evaluating of a drill string axial force in a wellbore is implemented by means of systems for controlling one or more drilling operations, each comprising: at least one processor and a memory device containing long-term run instructions for evaluating the efficiency of drill string axial force transmitting. Using the processor of one system, the drill string is lifted, so that the drill bit is above the bottom of the wellbore; the hook load is measured; the first reference hook load value is reduced. Also in the method, the first pressure to the bit is determined at the drill string bottom, and the efficiency of the axial force is determined based at least in part the measured hook load, the first bit pressure and the first reference hook load value. The second system processor alters the hook load to the first and second reference value; the first and second bit pressures are measured at the drill string bottom. Also, the second system processor determines the transmission efficiency of the axial force based, at least in part, on the first and the second reference hook load values, the first bit pressure and the second bit pressure.EFFECT: increased evaluation efficiency of the drill string axial force transmission and optimized hydrocarbons production.20 cl, 6 dwg

Adjustable shear assembly // 2627328
FIELD: oil and gas industry.SUBSTANCE: downhole tool comprises the inner and the outer components made with the possibility to move relative to one another and to form a shear joint therebetween. The shear element overlaps the shear joint. The shear element has the first part differing by the cross-sectional area from the second part. The curvilinear surface is connected to the inner or outer component and rests against the shear element. The curvilinear surface moves the shear element while moving the inner and outer components relative to each other, and switches the shear element between the state in which the first part of the element coincides with the shear joint by location, and the state in which the second part of the element coincides with the shear joint by location.EFFECT: ensuring the balance between the shear load, at which the shear element is shorn, and additional loads that may affect the components.20 cl, 5 dwg

Systems and methods of auxilliary perforation sealing in the borehole casing string // 2627327
FIELD: oil and gas industry.SUBSTANCE: according to the method the sealing device lowering down is carried out into the casing string channel at the threshold distance from the perforation. The sealing device includes the sealing material charge, which have the auxiliary plugging material. At least the part of the sealing device is made from the brittle material, able to break into parts under the breaking stress. The part of the sealing material charge is formed by the brittle material. Perform the sealing material charge release from the sealing device for supplying the auxiliary sealing material to the perforations to add the main plugging material and reduce the fluid medium flow rate, extending from the casing string channel through the perforations.EFFECT: improving the efficiency and reliability of the perforations sealing in the borehole casing string.37 cl, 13 dwg

System and method of flow-control valve optimum adjustment // 2627287
FIELD: oil and gas industry.SUBSTANCE: flow-control valves network is contained in the completion network, located along the isolated zones of the borehole at least of one multi-zone borehole lateral hole. The data is obtained from the bottomhole in multi-zone borehole and processed on the processor system modules, that may be used in the selected combinations. The examples of such modules include the network completions modules, deconvolution modules, optimizing modules and/or the inlet-outlet modules. The modules are configured to process the collected data, so as to contribute to the adjustment of the flow-control valve settings in the flow regulators network to upgrade the required target function.EFFECT: efficiency increase of the system and method of the flow-control valve optimal adjustment.20 cl, 8 dwg

Adjustable male hub for use with deflecting wedge device in wellbore // 2627058
FIELD: mining.SUBSTANCE: wellbore system comprises an upper deflecting wedge located inside the main wellbore and the defining first and second channels extending longitudinally through the upper deflecting wedge; a lower deflecting wedge located inside the main wellbore and spaced from the upper deflecting wedge at a predetermined distance, the lower deflecting wedge defines the first casing column communicating with the lower part of the main wellbore and the second casing column communicating with the auxiliary wellbore; and a male hub comprising a housing, a male hub tip disposed at the distal end of the housing, and a reducer coupling disposed around the housing, wherein one of the male hub tip and the reducer coupling is movable along the axis in order to vary the length of the male hub tip. The upper and lower deflecting wedges are arranged to direct the male hub either to the auxiliary wellbore or to the lower part of the main wellbore, following on from the length of the male hub tip compared to the predetermined distance.EFFECT: precise input is provided into more than one multilateral well offshoot.21 cl, 25 dwg
Device and method for water drainage of fractured bedrock layers // 2627054
FIELD: mining.SUBSTANCE: device water drainage of the fractured underlying layers contains a drainage pipe made of seamless stainless steel pipes that passes through a well drilled in the underlying layers. The outer end of the drainage pipe is connected to the ring drainage siphon and valve by means of a connecting device. A lot of water drainage holes are located in the drainage pipe at a distance. A single-acting throttle water damper is installed inside the drainage pipe. Rubber water blocking rings, containing an expanding agent, are installed by means of couplings on the outer wall of the drainage pipe at a distance. The seal is installed between the outer wall of the upper end of the bilge pipe internal wall and drilled wells. The ring drainage siphon, connected to the drainage pipe, is connected externally to the actuator pump and water tank. The device for pouring out of the fractured underlying layers, pump the water from the cracks in the underlying layer in accordance with the principle of a hermetically sealed fluid siphon, so that the softening of the sole of the production of water from the underlying layer is prevented, thus improving the stability of the surrounding rock; in addition, the volume of water removed from the underlying layer is effectively regulated by the installed valve, thus ensuring a constant filling of the siphon with water and preventing entry of air into drilled wells and erosion of the rock layers.EFFECT: simplification of design and application.5 cl, 1 dwg

Device and method for monitoring roof separation layer on basis of fiber grid in mining // 2627051
FIELD: mining engineering.SUBSTANCE: device for monitoring roof separation layer on the basis of fiber grid consists of a perpendicular measuring barrel (1) installed in hole drilled in the roof, and an layout case of equipment layout (19) connected from below to the perpendicular measuring barrel (1). Mounting brackets (6) of guide roller and mounting brackets (7) of roller with steel tape are symmetrically mounted on the upper part of layout case (19), and socle beams (15) of constant strength are symmetrically mounted on the lower part. Tension springs (16) are installed on opposite ends of socle beams (15) of constant strength. The other ends of two tension springs (16) are connected to steel wire rope (3). Steel wire rope (3) passes through rollers (17) with steel tape and guide rollers (18), and extends outward from fair-lead (2) of steel wire rope at the top of perpendicular measuring barrel (1). End head of steel wire rope (3) is connected to anchor head (5). Fiber grids A (8) and fiber grid B (9) are symmetrically mounted on the left sides and right sides of the socle beams (15) of constant strength. Fiber grids A (8) and fiber grids B (9) exit outwardly from fiber fair-lead (10) through the same fiber (12) and are connected to the fiber connector (14). Also, method for monitoring roof separation layer on basis of fiber grid in mining operations using a device for monitoring roofing separation layer on basis of fiber grid in mining operations.EFFECT: increasing safety due to higher monitoring efficiency and measurement accuracy.7 cl, 7 dwg
Panel for maintenance // 2627049
FIELD: mining.SUBSTANCE: invention relates to a downhole tool comprising a tool housing adapted for placement of a downhole tool component, wherein the tool body comprises a first portion of the tool body having a first end surface and second end surface, and activating module connected detachably to the first portion of the tool body. Wherein the activating unit comprises: a second portion of the tool body and a closing element connected removably to the second portion of the tool body. Wherein the second portion of the tool body and the closure element form a sealed chamber together, in which the fluid is held. Herewith, the sealing chamber comprises a mechanical and/or hydraulic components. Wherein the activating module can be separated from the first portion of the tool body, while the closing element is connected with the second part of the tool body. Furthermore, the present invention relates to a downhole system and a method for performing maintenance of the downhole tool.EFFECT: increased efficiency of the downhole tool.14 cl, 7 dwg
 
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