Интеллектуальная собственность

Пакер разбуриваемый, содержащий посадочный инструмент, в котором верхний цилиндр оснащен замковым механизмом, выполненным с возможностью взаимодействия с выступом и фиксацией поршней в верхнем положении, включающий корпус, установленные на корпусе шлипсы, уплотнительный элемент с верхним и нижним упорами и опорами под шлипсы, верхний и нижний толкатели, верхний из которых выполнен с возможностью перемещения вниз относительно корпуса с фиксацией в нижнем положении, причем нижний толкатель жестко соединен с полым штоком нижнего поршня с возможностью отсоединения после установки пакера в скважине, а полый шток нижнего поршня оснащен заглушкой, расположенной между радиальными и переточными каналами, а верхняя часть полого штока верхнего поршня оснащена выступом, посадочный инструмент состоит из трех цилиндров с радиальными отверстиями в верхней части, и соответствующих поршней с полым штоком, выполненным с радиальными каналами, и сообщенным переточными каналами с подпоршневым пространством, при этом цилиндры не имеют переходников и их рабочие поверхности сквозные, на заглушке полого штока сверху выполнена цилиндрическая выборка, со дна которой выполнена аналогичная выборка меньшего диаметра, с грани которой снята фаска, позволяющая герметично закрывать проходное сечение цилиндрической выборки меньшего диаметра при установке на фаску шарика, а на полом штоке нижнего поршня просверлены радиальные отверстия, над которыми на этом штоке выполнено резьбовое отверстие, снабженное ограничительным винтом для шарика, отличающийся тем, что хвостовик выполнен сборным, состоящим из нескольких секций для увеличения длины штока пакера разбуриваемого, и присоединен к пакеру разбуриваемому с помощью резьбового соединения. Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: unit includes a sucker rod pump containing a cylinder, a intake valve, a plunger with a controlled discharge valve connected to the sucker rod string with centralizers, and a bypass device. Below the bypass device there is a hollow shank with a packer made in the form of self-sealing rings and a stop. Below the packer and above the support, the shank is provided with side holes. The additional bypass device is made in the form of a sleeve connected to the shank and a hollow piston connected from below to the cylinder and configured to move limitedly and axially downwards against the sleeve with a sealed connection of the shank cavity with the under-plunger cavity of the cylinder. An additional bypass device is located above the bypass device. Above the sleeve of the additional bypass device, there is a casing in the form of a sleeve with lateral channels surrounding the cylinder of the pump with a gap and provided with a stop configured to interact with the upper end of the cylinder and positioned at a distance from the upper edge of the sleeve sufficient to grip the sleeve with an internal spear. The hollow piston is designed to be locked in the sleeve in the lower position. The locking force of the piston in the sleeve is less than the weight of the total weight of the shank with the casing. ! EFFECT: invention makes it possible to reduce the complexity of mounting, dismantling, reduce the time of lowering or lifting the unit in a well, and to expand the field of application, improve reliability and maintainability. ! 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: method of plugs removing from the perforated shank holes, while pumping the horizontal well in the bitumen deposit includes drilling, casing and fixing of the vertical wellbore part up to the productive horizon, drilling of the horizontal wellbore in the productive horizon, placing in the horizontal shaft of the shank, perforated with the holes with inserted plugs therein. The plugs in the shank perforated holes are made as hollow duralumin. The shank from above is equipped with the passing packer, lowered into the horizontal part of the hole up to the bottomhole and put the packer in the cased hole. At the mouth of the horizontal well, the lower end of the coiled tubing string - CT from the bottom upwards is equipped with the drilling bit, the downhole oscillator, the hydraulic downhole motor - HDM, and then CT string is lowered into the borehole at the speed of 8 m / min before the drilling bit enters the shank. During the drilling process, the process fluid circulation is created under pressure, which does not exceed the pressure on the production horizon through the HDM, and the plugs are removed along the entire length of the shank filter. During the plugs removal process, the weight of the tool is controlled, so that the lowering speed of the CT string does not exceed the load at the HDM more than 200 kg, and do not allow jamming of the HDM. In the process of deepening every 10 m make reciprocating of the CT string. When there are the drags under the load in the reciprocating process, equal to 8 tons, the sinking is not performed. When the drilling bit reaches the bottomhole, the CT string with HDM and drilling bit is raised by rotation from the well. ! EFFECT: increase of the plugs removal reliability and efficiency, reduction of the process operation duration. ! 1 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: invention relates to oil industry and can be used in treatment of bottom-hole zone of horizontal shafts of boreholes, penetrated carbonate collector. According to the method is determined pressure of fluid absorption in open horizontal borehole with cased production string in vertical part. There is performed processing of open horizontal borehole by fluid, providing the absence of absorption. After that, at the wellhead collected from bottom to top and is lowered into open horizontal hole, which consists of a perforated liner with centralizers, the packer, disconnector, the process pipes string. Descent of build is lowered to reach with the lower end of a perforated liner bottom horizontal borehole. Then inside a perforated liner is lowered a string pump-compressor tubes - PCT and up to 5 m till the lower end of the tubing string PCT of he lower end of a perforated liner lowering of tubing string PCT is stopped. Upper end of the production string is equipped with casing valve with casing-head stuffing box. Upper end of the process pipe string is equipped with shell valve with stuffing box. On upper end of the tubing pipe PCT tube valve is mounted. At open pipe and shell valves and closed casing valve is pumped into the tubing PCT invert emulsion. It is injected by acid composition to filling tube space of the well by reverse emulsion. Casing valve is closed and opened shell valve and continued pumping of acid composition through casing space of well in tank. Produce circulation of the acid composition to the loss of activity of acid composition. After that, circulation of the acid composition is stopped. Casing valve is closed and open shell valve. By pumping of fluid in shell space of the well is displaced the invert emulsion from shell valve to the casing space of well. By reverse emulsion is displaced the products of reaction of acid composition with carbonate reservoir through the casing valve in tank. Packer seating is performed. Disconnector is disconnected and process pipe string removed from the well. Perforated liner is left in the horizontal well bore. Well is equipped with production equipment and put it into operation. ! EFFECT: high efficiency of processing. ! 1 cl, 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: invention relates to oil industry and can be used in treatment of bottom-hole zone of horizontal boreholes opening carbonate collector. According to the method is determined a pressure of fluid absorption in open horizontal borehole. Performs processing of open horizontal borehole for liquidation of absorption. After treatment at the wellhead collected from bottom to top and is lowered into open horizontal shaft, which consists of a perforated liner with centralizers, the packer, disconnector, the process pipes string. Performs lowering of the packaging arrangement into an open horizontal borehole. Descent of it is lowering up to the lower end of a perforated liner of bottom horizontal borehole. Then inside a perforated liner is lowered a string pump-compressor tubes - PCT and up to 5 m till the lower end of the tubing string PCT of he lower end of a perforated liner lowering of tubing string PCT is stopped. At the wellhead top end of the production string is equipped with casing valve with casing-head stuffing box. Upper end of the process pipe string is equipped with shell valve with stuffing box. On upper end of the tubing pipe PCT tube valve is mounted. Pumped into the casing space invert emulsion until it appears at the wellhead. Casing valve is closed and opened shell and tube valves. Invert emulsion is pumped via the tubing string PCT to shell space until the appearing of inverted emulsion at the wellhead from shell space. Pumping is stopped and closed shell valve. Casing valve is opened. Performs interval treatment of horizontal shaft, which is divided into sections with length at 50 m, starting from the section from bottom hole. For this purpose, at closed casing valve and opened tube and shell valves in tubing string PCT is injected acid composition and flushed it in casing space in a value equal to the volume of the casing space between tubing string PCT and a perforated liner at the length of processed section. Shell valve is closed. Casing valve is opened and with a reverse emulsion launched on the surface, acid composition is forced via the tubing string PCT from casing space between tubing string PCT and perforated liner at the length of processed section to the bottom hole zone of bench along the whole length of processed section. Waiting for response within 12 hours. Invert emulsion is pumped to the tubing string PCT and displaced the reaction products from horizontal shaft in vertical part. Tubing string PCT is moved to the next interval. After processing of all sections of horizontal shaft the tubing string PCT is lowered to bottom. Casing valve is closed and opened shell valve. In the tubing string PCT marketable oil is pumped until it appears at the mouth of the shell space. Then the packer is installed. Disconnector is disconnected and process pipe string removed from the well. Perforated liner is left in the horizontal well bore. Borehole is equipped with well operating equipment and put into operation. ! EFFECT: high efficiency of processing. ! 1 cl, 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: group of inventions relates to oil and gas industry, specifically, to methods and devices for cementing shank in open and cased well shaft. Method includes joining a shank with lower shoe, a cut device through an mounting coupling to lower end of transfer pipe string. Mounting coupling is connected with shank with possibility of synchronous rotation due to interaction of external protrusions of coupling with slots made at end of shank. Shank is lowered in well to a specified depth. Calculated volume of grouting mortar is pumped into pipe string. Launching from well mouth is performed after last portion of cement plug and flushed with flush fluid to fix it in seat of core unit of conical collars. Excess pressure is created, screws are cut and plug is moved in assembly with unit of conical collars downwards to stop ring, wherein landing cone ring is tightly seated in seat of stop ring. Grouting mortar from cavity of shank completely enters annular space. Check valve prevents entry of solution into cavity of shank of annular space. Pressure is increased to rated pressure for destruction of diaphragm with opening of holes, through which flushing liquid is washed excess solution by generating direct circulation. Method includes disconnecting from body mounting coupling with transfer pipe string, which is lifted to surface. ! EFFECT: higher efficiency of method and reliability of device operation due to possibility of lowering and cementing in well with rotation for more qualitative replacement of cement grout in annular space and guaranteed disconnection of pipe string from shank irrespective of its length and in any well interval with any complexity and direction of barrel. ! 2 cl, 2 dwg Подробнее

FIELD: oil industry. ! SUBSTANCE: invention relates to devices for enlargement of wells diameter within specified limits. Rounder includes a hollow housing with an inner ledge and radial holes. Holes accomodate extending hinged cutting elements with internal shanks and hard-alloy teeth on the working surface. Inside the housing cavity there is a hollow pusher with a device for connection to the drill string and cone-shaped holder. Retainer is configured to interact with the shanks of cutting elements in order to pull them out during the downward movement of the pusher. Pusher above the projection has a running thrust no-go thread on the outer surface. Housing is equipped with a spring-loaded inside element interacting with recesses of the running thread. In non-operating position the cutting elements retainer has the shape of an interacting in the upper position of the pusher internal projections of a cutting element shank with an outer retainer ring catch. Latter is configured to enable disengagement from projections of the shank during downward movement of the pusher. This excludes wear of the rounder caused by abrasive substances, pumped with cleaning fluid. Invention allows to perform intermediate washing of the well shaft. ! EFFECT: ensures complete opening of the device in working position. ! 1 cl, 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: unit includes a flow column, a packer, a liner and a sucker rod pump with a side hole in the cylinder, dividing this cylinder into two parts proportional to the capacities of appropriate reservoirs, located in the casing above a two-channel body, in one channel there is an additional suction valve with an output to the clearance between the casing and the cylinder, and the second channel is connected with an input of the sucker rod pump, inputs of the first and second channels are connected with the above packer space of the well and the liner or vice versa. According to the invention the sucker rod pump is made assembled with elongated bottom collar securing and an anchor shoe, connected with an output of the two-channel sub. The clearance between the cylinder and the casing above the side hole of the cylinder is tightened by the sealing coil with collars and lock element, that by the top end is connected with a fit-in branch pipe, equipped at the joint with the flow column by the turned over anchor shoe for mechanical securing of the inserted pump, and the top part of the cylinder has a turned over lock of the appropriate top mechanical securing. Wherein the top surface of the O-ring of the anchor shoe is located below the spring end of the turned over lock at the distance equal from the side hole of the cylinder to the middle of the lock element of the sealing coil. ! EFFECT: reduced volume of works performed at the facility during yield and water cut determination of each operated reservoir. ! 4 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: method involves installation of oil-well tubing string with well sucker-rod pump in a well. Additionally, the string features a liner with filter, heating cable along external surface from wellhead to the well sucker-rod pump, capillary well pipeline from wellhead to a depth below the well sucker-rod pump, entering inner space of the liner. Well operation involves simultaneous product extraction through oil-well tubing string by the well sucker-rod pump. Electric current runs over the heating cable. Mix of Intat asphaltene, resin and paraffin sediment solvent and Rekod demulsifier is injected via capillary well pipeline. Demulsifier to solvent ratio is (1:18)-(1:22). Cable with maximum heating temperature up to 105°C and maximum power up to 60 kWh is used as the heating cable. ! EFFECT: enhanced efficiency of viscous oil emulsion production. ! 1 ex, 1 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: method comprises test forcing of fracturing fluid and pile of fracturing fluid with proppant, correcting the fracturing project and performing of the main fracturing process. At that the well in the defect area of the production string is equipped with a fly cutter unsupported down the whole and the production string and cemented, the production string is perforated in the stratum interval by the cumulative system with density of 20-30 openings per a running metre at diameter of the perforated openings of at least 20 mm, the flow string with diameter of 89 mm is run in together with the packer and liner with diameter of 89 mm. The packer is set in the production string per 8-30 m above the fly cutter; the liner bottom is placed per 10-30 m above the stratum roof. When hydraulic fracturing is made components are pumped through the flow string and sandy-liquid slurry is pumped in concentration that does not exceed 500 kg/m3, with liquid flow rate from 1.8 up to 2.6 m3/min. ! EFFECT: performance of hydraulic fracturing in the well with worn out production string. ! 2 cl, 1 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: invention refers to the oil and gas production industry, namely to a tail pipe for side hole attachment in a multi-lateral horizontal well. The tail pipe comprises a casing pipe of an effective length, a drive shoe with an end face displaced to an outer diameter, connected through an operating connection pipe to a body of a drive shoe clamper, forming a hinge fitting with an inner connection pipe in an articulating hub; beside the fitting, the articulating hub also comprises a back-pressure valve with a rod-opened retainer when lowering into the well; a stop assembly body is provided with a displacement plug casing; the lower displacement plug is provided on the connection pipe of the fitting, which is attached through the bore to the body of the removed tail pipe assembly; the body accommodate a crown hub with a put-on top of a profile partition, while a lower side seats on a lock connected to the hinge through an inner left thread to form a closed cavity inside the partition. The closed cavity of the partition is closed with the valve and additionally with a collet gate to protect from pressure jumps in a hydraulic canal of the tail pipe; the cavity has two sealing canals to be filled with water and de-aerated; corrugations of the partition are put on crown flanges of the hub and sealed, while a lower side is mated with the lock which comprises a seat for a foundation cutter; along the left thread, the lock is connected to the hinge to form a detachment assembly; the hinge fitting from the drive shoe, connection pipe and drive shoe clamper are configured to move in the axially symmetrical and radial direction along the well bore. ! EFFECT: provided considerable reduction of the non-productive time required to attach the horizontal side hole during the multi-lateral well construction. ! 12 dwg Подробнее

FIELD: oil-and-gas industry. ! SUBSTANCE: in compliance with one of versions, this device comprises well with packers dividing the well into two or more spaces communicated with productive formations, downhole pump and valve system to be connected to pump inlet in one or several formations. Shank is arranged under packers and connected with tubing while opening for communication with the pump nearby interpacker space is located at maximum distance from packets but not lower than the rood of formation communicated therewith. ! EFFECT: higher efficiency. ! 3 cl, 3 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: well reamer includes a hollow housing with an internal projection and radial holes, in which there installed are movable rolling cutters with shanks, an annular piston with a side hole arranged in the housing cavity and fixed against being rotated, with upper and lower props on outer surface and a connection device to a drill column, a cylinder connected to the housing and forming together with the annular piston a hydraulic chamber interconnected with its side hole to the housing cavity, a fastener installed in the annular piston with possibility of interaction with shanks of rolling cutters and the inner projection of the housing and device for locking of rolling cutters in a non-working position, which contains additional annular piston located in the reamer hydraulic chamber below the side hole of the main piston; at that, the device for locking of rolling cutters in the non-working position is made in the form of radially spring-loaded segments located in external slots of the piston, and counter cavities of those segments in the cylinder, and between additional piston and annular segments of the device for locking of rolling cutters there installed is a pusher for disengagement of segments from the reamer cylinder. From above the annular projection of the housing there arranged on inner side are elements that are elastic in axial direction, which have the possibility of interacting with lower end of the annular piston at its downward movement relative to the housing. ! EFFECT: improving durability and serviceability of the reamer, reducing vibrations of a drilling tool during reaming process of the well, and increasing service life of rolling cutters of the reamer. ! 4 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: pump unit for operation of beds in well contains flow column, liner, packer installed outside liner between beds, submersible pipe with housing to pump bed products with pumping capacity exceeding total formation flow rate, between pump and tail there's a module for sequential operation of beds which includes housing with holes which can be used for communication of the housing to pump input and each bed. For the purpose of beds switching hydraulic control valve group is used for sequential connection of input to each bed to input of the pump which includes at least one piston with sealing and two pistons for movement installed at the shaft and one valve which is connected hydraulically to one bed and piston for movement and opened at preset pressure drop between beds. ! EFFECT: simplification of structure, reduction of costs, improvement of reliability. ! 5 cl, 1 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: method involves lowering of a liner with a suspension to a well, installation of a liner on the suspension provided with ribs for jamming in the well section specified as per caliper survey, cementing, detachment of drilling tubes, flushing of the shaft above the liner, lifting of drilling tubes immediately after cementing and waiting for cement curing. At that, the suspension made of longitudinal corrugated tube of diameter that is larger than inner diameter of the well is located on lower end of the liner. Below the suspension there arranged is shoe from easily drilled material with a calibrated hole allowing to enlarge the corrugated tube of the suspension till pressing of its ribs to the well wall by pressure drop created by pumping through that hole of liquid with a certain flow rate. At that, the tube diameter and number of corrugations of the suspension are chosen so that after it is expanded, external longitudinal channels sufficient for cement pumping and internal channel sufficient for passage of borehole equipment can remain. ! EFFECT: reliable installation of the casing string liner of any length at the well diameter differing from the design one, and tight isolation of the space behind the string. ! 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: assembly includes shank, packer, return valve, hydraulic jet pump. According to invention the assembly additionally includes second hydraulic jet pump and pressure pulse generator, the latter of which is mounted at the interval between hydraulic jet pumps and is capable of operation under the influence of working fluid pumped by tubing string. Note that pressure pulse generator has turbine stages - stators with holes and rotors with gates capable of regular closing of holes in stators that are fixed against turning relatively each other, like rotors, for sudden changing of stream velocity through hydraulic jet pumps. ! EFFECT: increase of efficiency of used assemblies with hydraulic jet pumps in the course of development of wells with low-permeable beds at viscous oil production. ! 4 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: shoe-valve for shank includes housing with a central through channel. In the latter there arranged is a seat for valve with pusher spring-loaded from the seat relative to the guide non-tight sleeve into which pusher is inserted with possibility of restricted longitudinal movement. Pusher and guide sleeve are arranged above the seat and the valve respectively; at that, pusher has the possibility of interacting with control tool. Guide sleeve is equipped with a internal pin; at that, on external surface of pusher there located is closed shaped slot for the pin. Shaped slot is made in the form of long and short alternating longitudinal grooves connected from above with a shaped groove. ! EFFECT: at back-and-forth movement of pusher relative to the guide sleeve the shaped groove allows in-series location of the pin in long groove in open position or in short groove in closed position to fix the valve at interaction with the seat. ! 1 cl, 3 dwg Подробнее

FIELD: automobile production. ! SUBSTANCE: gear selection mechanism of distribution gearbox includes housing (1) made as an integral part of distribution gearbox casing cover plate. Cover plate (3) is fixed on housing (1). Pneumatic cylinder (5) is installed in housing (1), and its inner cavity is stepped. Casing (2) is provided with shank (6). Stock (7) is installed in guide openings of housing (1) and casing (2). Piston (10) of high gear, on which the second piston (11) of low gear is installed, is fixed on one end of stock (7). The other end of stock (7) is located in shank (6), in which spring-loaded fastener (12), stock neutral position sensor (14) and high gear sensor (15) are installed. Three grooves (16) are made in the stock for interaction with fastener (12), and cavities (17) and flattened surface (18) are made on stock (7) and required for operation of neutral position sensor (14) and high gear sensor (15). Threaded openings (19) and (22) for air supply to cavities (20) and (21) of pneumatic cylinder (5) are made in cover plate (3) and housing (1). Gear shifting fork (24) fixed on stock (7) by means of double split pin (25) is installed in central part of stock (7). An opening in shank (6) is closed with plug (26), and threaded opening (27) can be made on the end of stock (7). ! EFFECT: improving reliability and durability of gear selection mechanism. ! 3 cl, 2 dwg Подробнее

FIELD: oil-and-gas production. ! SUBSTANCE: liner shoe valve comprises body with central flow channel and seat. Space under shoe vale is communicated with outer space, and valve made up of plug and furnished with push rod. Said valve is fitted into guide bush to displace therein in and spring-loaded by said bush. Said guide bush is arranged above seat and valve. Aforesaid push rod is spring loaded upward. Note here that valve displaces downward to get in tight interaction with seat. Valve is provided with annular recess. Valve body is furnished with lock to interact with valve anular recess to lock the valve in bottom position. ! EFFECT: push rod top provided with springs top with diameter to allow overcoming spring force to displace valve downward at preset pumped fluid flow rate. ! 2 dwg Подробнее

FIELD: oil and gas industry. ! SUBSTANCE: device includes shank, tubing string, disconnector connecting upper part of shank to lower part of tubing string, which is made in the form of fitting assembly. Disconnector consists of funnel arranged on upper end of shank and inner self-releasing catch with fasteners. Disconnection of fitting assembly is performed by lowering of a ball inside tubing string so that hydraulic pressure is created in tubing string. Valve assembly connected to a shoe and equipped with a filter is arranged in lower part of shank. ! EFFECT: design of disconnector allows performing shank cementing process which includes one lowering-lifting operation, due to which the shank cementing process duration is reduced. ! 2 dwg Подробнее