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Downhole separator of mechanical impurities Proposed separator comprises housing with inlet and outlet, rotary screw, protective sleeve and separation head with mechanical impurity discharge channels. Inlets are located above rotary screw. Separation head has cleaned fluid discharge channels communicated with outlets via circular clearance between protective sleeve and housing. Helical grate can be made at protective sleeve inner side with twist along screw rotation. Impeller can be arranged upstream of outlets to up the head. |
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Method for determination of product water cut in oil producing well Determination is carried out in a well equipped with a tubing string with an electric-centrifugal pump and a return valve at the end. In order to determine water cut the well is selected in the middle of an oil deposit with production modes close to the average values for the deposit. The well is operated not less than the time required to reach full operation. The well is stopped and process holding is made till gas separation from the well product and breakage into oil and water. Height of the liquid column is measured, volume of the water cut is determined against the boundary line of liquid and gas and water and oil. |
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Dual string production method in well with increased gas ratio and device for its implementation Group of inventions relates to split-stream production of several formations with use of a sucker-rod pumping unit. The method includes running of the unit including a flow column, a liner-packer combination ensuring splitting of the upper and the lower operated formations, sucker-rod pump for formation fluid pumping from two formations which inputs communicate with the over-packer and the under-packer space through suction valves while its output communicates with a cavity of the flow column through an injection valve; a transition element providing hydraulic connection of the under-packer space through the liner to one of suction valves of the sucker-rod pump and permanent separation of associated gas from the fluid produced from the lower formation to the in-field flow line at the well head or to the over-packer cavity of the well above dynamic level through the borehole pipeline. After separation of associated gas the formation fluid is pumped from two formations through the flow column at the well head. |
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Gas separator of down-hole submerged pump Gas separator of down-hole submerged pump contains casing, base, in which there are inlet holes for gas-liquid mixture supply. Head with outlet holes for separated gas discharge and outlet channels for transmission of gas-free liquid. Separation chamber, shaft, screw mounted on shaft, note that in the casing at the entrance of separation chamber there installed is a cone-shaped bush. Bush inner diameter is less than separation chamber outer diameter. Invention is designed for increase of gas separator operation reliability. |
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Well is equipped bottom upwards with a tubing string ended with a packer, submerged pump, switch, two outer and inner annulus of the tubing string which are located concentrically, tubes with holes at the outer tubing string. The well is splitted over the productive stratum. The stratal product is delivered by the submerged pump in a cyclic mode "delivery-stop" from the productive stratum through the tubing string, the switch, tubular annulus between inner and outer tubing string, tubes and holes of tubes into tubular annulus between the production string and outer tubing string. Pressure is created and maintained in the upper pert of the well; it should not be less than oil degassing pressure and more than permissible pressure to the production string. Separation of the stratal product into oil and water is arranged in the upper part of the well. Completeness of separation is controlled by the duration of a half of the operation cycle of the submerged pump till stoppage and by the distance between switch and the tube with a hole. Oil is delivered to oil line. Water is supplied through the switch to inner tubing string and through the pipeline to an injection well by borehole-to-borehole water pumping and/or through tubular annulus between the production string and outer tubing string and tubing string with a packer to the stratum over the packer by borehole water pumping. |
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Method of free gas separation by turning of liquid-gas mixture upflow and its passage through semi-transparent separation surface. Separation surface contains vertical slots. Pressure gradients are created perpendicular to separation surface. |
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Plant for borehole separation of water-gas-oil mixture from water Plant for borehole separation of water-gas-oil mixture from water includes an electric submersible pump, two rows of concentrically located tubing strings. The tubing is suspended to the wellhead valves, the lower part of an external row of which near the wellhead is rigidly connected to an internal row. The internal row of the tubing has fracturing within location of the lower part of the external row, where a centrifugal-type separator divided with a partition wall into two parts in built. The separator is equipped with a tube for removal of gas-water-oil flow from under the partition wall to upper part of external row of tubes. A branch pipe plugged from above and provided with side tangential fluid outlet channels to the separator is the continuation of the internal row of tubes. The housing of the separator above the partition wall and on the level below tangential channels of the branch pipe has radial channels and a lower open end, which hydraulically attach it to the external row of the tubing string. Upper part of the separator housing is connected to the internal row of the tubing string by means of a cross-section coupling. The cross-section coupling has tangential side outlet channels for outlet of gas-water-oil mixture from the inner cavity of the external row of the tubing. External row of the tubing with upper end in the wellhead valves is connected to an oil line with a connection pipe, and the internal row of the tubing is connected to the water conduit; at that, the housing of the separator is equipped on the outside with centrators in the form of ribs. |
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Method for downhole separation of water and gas and oil mixture Method for downhole separation of water and gas and oil mixture includes separation of mixture and separate extraction of mixture components at inclined area of the well with water extraction. Water extraction is done near tubing string wall opposite to the wall, along which the separated flow of oil and gas goes up. In the course of water and gas and oil mixture separation at the inclined area of the well there performed is the deceleration of mixture flow speed by flow passing into the tubing string of larger diameter. Water extraction is done through the shank located near the said opposite wall. The shank is equipped with the holes located along the shank and directed towards the said opposite wall. |
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Downhole separator for separating water and gas and oil mixture Downhole separator for separating water and gas and oil mixture includes stepped tubing string with electric submersible pump. It includes separating chamber, through channel for oil and inlet holes for water. As separating chamber it contains tubing string of larger diameter. Inside the tubing string of larger diameter there is a short tubing string of smaller diameter. The tubing strings of smaller diameter are located near the mouth at the area of well bore with inclination angle more than 3 degrees. Note that the tubing string of smaller diameter is equipped with a shank plugged from the bottom end with two rows of inlet holes along the whole length for water supply. The shank is connected to it by high pressure sleeve. The shank from the holes side is located at the bottom forming internal surface and at the distance from the bottom end of the tubing string of larger diameter. |
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Housing of gravitational gas separator consists of several pipes connected to each other by means of case couplings. A split centralising sleeve is located inside one or several case couplings. Centralising sleeve serves for centralising the cylinder of deep-well pump in the housing. On inner surface of split centralising sleeve there are longitudinal slots. Gravitational gas separator includes a coupling connected through an adapter to deep-well pump. Channels are located radially in the coupling, and removable ball check valve assemblies consisting of a collet, a ball, a seat and a rubber ring are installed in them. Adapter ending with a nipple is attached to lower part of the housing. |
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Proposed device includes pressure differentiator and sand trap, which are arranged above borehole pump. Sand trap is installed on tie-rod hanger under pressure differentiator. Sand trap has outer diameter of smaller size of inner surface of receiving column and bigger size of diameter of pressure differentiator. Zone of decreased pressure is created with the pressure differentiator at the pump operation, and sand particles are deposited in the trap. |
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Borehole separator and method of fluid separation hereby Set of inventions is intended for oil field equipment in mechanised oil extraction. Proposed separator comprises connection head, body, slime tube and separation unit made up of hollow auger with shaped spiral. Gas discharge openings are made under said spiral, all over its length. Separator body top section is communicated with connection head via gas discharge head and, at least, one intake head. The latter has intake channels and borehole fluid separator. Note here that separator body houses auger case. The latter is composed of hollow cylinder with slot cutouts for removal of mechanical impurities from separation unit into chamber between separator body and auger case. Separator is furnished with guide vane arranged under separation unit and provided with channels to feed mechanical impurities into slime tube and those to feed fluid from separation unit to branch pipe. Hollow auger top section, not surrounded by shaped spiral, has gas release openings. |
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Proposed system comprises the following components: controlled valve arranged at separator outlet branch pie, first pressure transducer arranged nearby, at least, one pump suction branch pipe, nearby separator inlet and nearby well bottom, and controller electrically connected with first pressure transducer and valve. Not here that said controller allows closing the valve in starting the pump and opening it at pressure measured by, at least, one transducer, reaching preset level. |
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Well flow control method and device Typical well operating equipment can include separator for separation of water from oil, in which the produced mixture of fluid media is obtained and mixture is divided into the corresponding water and oil flows. Water flow can be pumped back to the well. For that purpose, well system for water pumping speed control back to the well can be developed. Group of inventions provides the improvement of well flow control efficiency. Essence of inventions: well equipment designed for receiving fluid medium flows through the first and the second fluid medium flow passage channels is arranged in the well. The above equipment includes flow separation control having the device connected to the first channel and the device connected to the second channel, which are interconnected. Outlet flows in the first and the second channels are controlled by means of the control. |
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FIELD: oil industry. SUBSTANCE: device refers to the oil industry and can be used when the fluid is pumped from the oil wells with a high gas content by using the electric-centrifugal pump equipment. Fluid pumping-out method by using electric-centerfugal equipment is done by the inlet of the gas liquid mixture in the gas separator, rising its pressure in the feed screw 5, gas separator 7 gas liquid mixture stream roolup, stream separation followed by the outlet of the separated gas to the annular space 12 and inlet of the gas-free fluid in the electric-centrifugal pump. In the pumping well's limited radial dimensions, in advance, before placing the electric-centerfugal equipment in the pumping well, the gas liquid mixture inlet range is determined, for each value of this range, feed-screw 5 and gas separator 7 geometric measurements are calculated and then the unit is completed consisting the batch of the calculated feed-screws 5 for each inlet value within one pumping well measurements. EFFECT: increased gas separator reliability and support of the range of the saturated gas content in the gas liquid mixture. 4 cl, 3 dwg |
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Well sand separator comprises a body, a lower double-sided and intermediate subs with transverse and longitudinal channels and tubes for the descending flow, trap chambers. A part of the lower double-sided sub arranged below the transverse channels is made of large diameter compared to its upper part. At the same time two nets with a spiral between them are placed onto this part of the lower sub, and the external sub is equipped with a trap chamber. |
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Deep-well pump for oil extraction Invention can be used for pumping fluids containing mechanical impurities from wells. Deep-well oil extraction pumping unit comprises pump with submerged motor with housing communicated with pump inlet in its top, and in, its bottom, with outlet of purified fluid from separator, and sump of mechanical impurities. Gravity separator of mechanical impurities consists of coaxially arranged pipes. Inner pipe is coupled with outer pipe by coupling. Outer pipe lower section is located below coupling but above inner pipe lower end face. Inner pipe lower section communicates bottom hole with pump intake via casing. Sump of mechanical impurities represents a continuation of gravity separator outer pipe and is provided with spring-loaded valve arranged at the sump bottom. Distance from bottom hole pump unit to the valve exceeds that from said unit to perforation spacing. |
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Abrasive-resistant centrifugal gas tank Gas tank contains cylindrical case and a shaft, on which an inlet unit located sequentially in relation to a flow direction, a pressure unit, a separation unit and an separated gas withdrawal in to a hole clearance outlet unit. The separation unit performed as a screw with a variable tooth spacing, which blade forms a constant or monotonous decreasing from the inlet to the outlet angle in diapason from 90 to 30°, with in a meridian cross section rotation axis, at that the screw blade in the cross section perpendicular to the rotation axis, executed with a reducer to a periphery. The cross section ages are hollowed to the rotation side with creation of an angle between tangent line to the cross section and on normal to the rotation axis, the angle is not greater than 90°. |
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Device contains a void chamber with a hole, equipped with a shut off valve in its bottom part, a pipe for a deposit collection. Between the case and the pipe a channel formed, which entrance located over the possible deposit layer, and exit - directly over the shut off valve. In the deposit collection pipe are separated outlets for the pipes cavity connection to the channel between the case and the pipe. |
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Oil well pumping unit for extraction and pumping in of water into stratum Invention relates to gas-and-oil producing industry, particularly to extraction of watered oil and utilisation of produced water. Unit contains packer installed between top and bottom stratums, top and bottom multidirectional screw pumps, downed on production tubing into well and installed lower than packer and installed higher than packer, pumps drive, located on surface. Inlet of bottom pump is located lower than dynamic head of exuded under pressure action water from water-oil mixture of top stratum, and output is communicated to under-packer space. Additionally input of top pump is located higher than dynamic head of exuded water, and output is communicated to production tubing for lifting of watered oil on surface of well. Worm shaft of top pump and worm shaft of bottom pump, twisted to side opposite, are connected by rod, and casings of top and bottom pumps- by coupling bushing. Rod and coupling bushing are implemented with ability of regulation of length and fixation for achievement of required distance between inputs of pumps. Correlation of productivities of top and bottom pumps is selected depending on amount of received water into well with condition of providing of specific gravity separation of water-oil mixture of top stratum, in order to eliminate water catch by top pump and of oil - by bottom pump. Total capacity of pumps is selected so that it provides dynamic head of exuded water lower than top stratum, that eliminates formation of "aquatic wedge" on the opposite side to top productive stratum, providing increasing of operation life for oil extraction. |
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Oil-well pumping unit for oil extraction and water pumping into stratum Invention relates to gas-and-oil producing industry, particularly to winning of water-cut oil and utilisation of produced water. Unit includes packer, installed between top and bottom stratums, top and bottom pumps with worm shafts, blown down on tubing string into well and installed higher than packer, pumps drive, located on surface. Inlet of bottom pump is located lower than dynamic head of water precipitated under action of gravitation from water-oil mixture of top stratum. Outlet of this pump is communicated to under-packer space. Additionally inlet of top pump is located higher than dynamic head of precipitated water, and outlet is communicated to tubing string. Between worm shafts it is installed reducer, input shaft of which is connected to bottom of top worm shaft, and outlet - with top of bottom worm shafts of pumps. Reducer body is rigidly connected to pipe lift string, and its gear ratio is selected so that correlation of efficiency of top and bottom pumps corresponds the amount correlation of supply into well of water and oil with condition of providing of gravity separation of water-oil mixture of top stratum at opposite rotation of worm shafts. Pipe lift string is implemented with ability of rotation under action of additional drive, located on surface. |
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Unit borehole rod pumping with double-acting pump Invention relates to petroleum industry and can be used for operation of high-flooded wells. Unit with double-acting pump for well with boring casing, two uncovers and packer, located between uncovers, contains piston, cylinder with bottom forcing valve, top and bottom inlet openings with suction valves, located over packer and, agreeably, higher and lower the piston, plunger with top delivery valve, implemented, as the piston, with ability of reciprocating motion, pipe string, on which into well it is chuted sucker-rod pump, inlet of which by means of pipe string is communicated through the top pressure valve to the wellhead, and through the bottom pressure valve - to under packer space. According to the invention piston is implemented with the ability of sequence for plunger upward ensured by pressure drop over this piston and under this piston up to intercommunication of piston chamber to top inlet opening for inflow through this hole of oil into piston chamber until, plunger would stop uppermost position, and its following displacement downward by plunger under weight action of strings up to its downward most position. Additionally at increasing of water cut of oil it is provided ability of strings allowance downward, and at reduction of water cut - grasp of strings. |
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Abrasion resistant gas separator Invention refers to pump equipment engineering and can be implemented at production of oil with high contents of gas and abrasive particles. The gas separator consists of a cylinder case and a shaft whereon an input unit, a pressure unit, a separating unit and a unit of separated gas withdrawal into annular space are arranged successively downstream. The pressure unit is made in form of at least one axial step consisting of a working wheel in form of a bushing with blades and of a directing device. Minimal angle of the working wheel between tangent to a skeleton line of the blade and plane perpendicular to rotation axis increases 1.2-4.0 times in the direction from flow inlet to outlet. Length of flowing channels of the working wheel measured along its external cylinder surface corresponds to 1-4 of wheel diametre; number of blades does not exceed 4. Ration of bushing diametre to wheel diametre equals to 0.4-0.9. Meridian section of the wheel converges from inlet to outlet with convergent angle not more, than 15°. |
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Device for separation of solid particles and gas in submerged electric centrifugal pump Invention is related to oil machine building and may be used in submerged electric centrifugal pumps that pump gas-liquid mixtures with high content of solid particles from wells. Device comprises body, shaft, receiving base with channels and mesh for passage of well liquid, separator, channel for gas discharge, channel for discharge of separated liquid, channel for discharge of solid particles connected to container. Inside separator there is axial wheel installed, which is arranged with upper annular disc with internal channel for gas discharge. Ends of wheel blades and internal part of separator are arranged as cone-shaped. Above disc on shaft there is baffle installed, which is arranged in the form of cruciform radial blades, and fixed protective grid, above which compressing wheel is located. Suggested design will make it possible during pump operation to separate gas-liquid mixture with solid particles after supply to device in three flows: gas, liquid and solid particles with their direction along their motion channels due to effect of centrifugal forces. |
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Invention refers to oil industry and can be used for fluid production from the boreholes equipped with sucker-rod pumps. According to method sand leakage process from payout bed is estimated depending on bottomhole zone and casing annulus pressure. According to the invention constant velocity of formation fluid inflow is provided due to levelling pressure of sucker-rod pump, transmitted to bottomhole zone through borehole liquid. The device includes receiving column mounted under sucker-rod pump suction, by length of which blisters are installed. Each blister is formed by internal surface of receiving column and bridge with pass. Blisters accommodate elastic sealed gas-expanded containers. |
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Device for measuring quantity of oil and oil gas Invention refers to oil extraction, particularly to devices for measuring quantity of oil and oil gas extracted from deposits and can be employed for records management of production yield of oil and gas condensate wells (separate as well as clusters) and licensed places in systems of pressure-sealed gathering. To obtain the said the device incorporates capacity, separation facility and pipelines supplying water-oil-gas mixture together with pipelines withdrawing oil gas and water-oil emulsion. The capacity is made in form of a column plugged at ends. The axis of the column is perpendicular or inclined to horizontal surface. The water-oil-gas supplying pipeline is connected to the separation facility which divides the column into upper and lower portions connected or not connected to each other. The water-oil emulsion withdrawal pipeline is connected to the lower portion of the column. The oil gas withdrawal pipeline is connected to the upper portion of the column. The oil gas withdrawal pipeline is equipped with a device for measuring quantity of oil gas. One or more sensors are installed in the column. Also diameters of upper and lower portions are made equal or not equal and lengths of portions are made equal or not equal. |
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Well pump facility for oil production and water injection to stratum Production facility includes plunger pumps that can be positioned in a well in sequence. Well head pump drive is capable of reciprocating. Each of the plunger pumps has inlet and outlet devices with coupling rods. The facility also includes packer that can be positioned between strata, the upper stratum being a water-encroached productive formation for water, oil and gas mix production, and the lower one serving for water intake. Inlet hole is placed below the upper pump and made in the form of cylindrical vessel with water-repellent coating inside, upper side orifice and upper pump inlet jet inserted inside hermetically from above. The lower pump represents a cylinder inserted hermetically to channel of the packer with hollow plunger, the coupling rod of which is hollow and is rigidly connected to the cylindrical vessel. Inlet orifice of the lower pump includes two devices, the first being a channel connecting hollow coupling rod to the vessel, and the second a jet stopped from above with a side channel in the upper part to connect the hollow coupling rod to the inlet jet of the upper pump above the vessel. Ring section area between the inlet jet and the vessel is selected in such a manner that maximum speed of water oil mix flowing down at this section exceeds oil floating speed not more than by the factor of two, and minimal inlet jet volume between the side channel of stopped jet and the upper pump comprises at least half a volume of fluid supplied to the upper pump by suction. |
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Invention relates to petroleum industry and can be used for production of petroleum with petroleum gas. The submerged pumping unit incorporates submerged motor and pump, a hydraulic protection and a gas separator-disperser. The latter comprises a shaft, inlet holes, a line of separated gas discharge into behind-the-pipe space, a line to discharge a mix with residual gas content, a disperser and a line to discharge dispersed mixture into the submerged pump. The housing accommodates a prescrew, a cavity-forming bucket wheel and separation drum with ribs. The cavity-forming bucket wheel outer edge angle varies from 100° to 110°. The disperser incorporates the screw fitted on the shaft and a fixed ring with inner rubs, the said ring enveloping the screw from outside and the ring inner ribs being parallel to the screw axis. |
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Knockout drum installed in well bore Facility incorporates an inner pipe for flowing of fluid removed from gas. The pipe is installed in the external pipe and forms with the said external pipe an annular clearance for free gas flowing. The facility is additionally equipped with a plate, which has a breakpoint and at least partially surrounds the said external pipe to form a curved flow passage for produced fluid mixture; an annular clearance inlet of aforesaid breakpoint for free gas flow, in this case, the external pipe has an extended part, located next to the annular clearance inlet and expanding as the said extended part goes from the breakpoint of the plate; the inlet of the internal pipe made below the breakpoint for flow of fluid removed from gas and fluid mixture containing gas and hydrocarbon liquid. The fluid mixture is transferred from the productive zone into the well, which has an external pipe located in the said well and an extended part in its lower end part. Below this part, a disc plate furnished with a good few openings is disposed. According to this method, the following procedures are carried out: transference of fluid via the passage at least partially covering the said external pipe to spin aforesaid fluid mixture around the external pipe; separation of the part of gas from the said hydrocarbon liquid in response to spinning of fluid mixture to produce free gas, press it at the end part of the external pipe, stop free gas twirl caused by disc plate and ensure conditions of its upraise with fluid removal from gas; transference of the said separated free gas via the external pipe. |
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Invention relates to pump construction and can be used in production of petroleum. The gas separator incorporates a cylindrical housing with a protective sleeve and a shaft, as well as a screw, an impeller and separating drum with radial blades. In compliance with this invention, to produce petroleum with a high content of solid abrasive particles, the protective sleeve inner surface should have, at least, around the screw or around the screw and the impeller, at least one helical blade with a skeleton line twisted towards or opposite to the screw blades, and/or, at least, two lengthwise blades should be mounted. These blades are fitted in parallel to the shaft axis and allow creating a vortex path by a liquid flow preventing the contact of solid abrasive particles with the sleeve surface. |
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Ratio separator of gas at oil recovery Invention is referred to oil and gas producing industry and intended for separation of gas from oil before a plutonic well pump at an oil recovery. Device contains the cylindrical body, an internal coaxial tube and a turbulizer. According to invention the turbulizer for an influent flow is installed directly in body bottom on a current input in the body. The accumulative coaxial tube for gathering knocked out gas is installed above a turbulizer and it has the flap on its top part. The room over the flap is connected with annular room of a hole by pipe junctions for a gas output. The ring channel between the body and a accumulative tube is connected with a pump intake pipe. Thus before a going into a accumulative tube the central tube is installed with chippers consistently affixed to it in the form of the hollow truncated cones which are placed by smaller diameters towards a accumulative tube. |
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Gas separator for downhole centrifugal pump Gas separator comprises body with inlet orifices, shaft, auger assembly and centrifugal separation unit serially arranged on the shaft, as well as liquid and gas discharge channels. The separator has additional auger unit connected to the shaft so that lower end of additional auger unit is aligned with liquid discharge channel outlet or is located over the channel. Part of gas discharge channel is defined by cavity having additional auger unit, which prevents reservoir liquid ingress from hole annuity into gas discharge channel. |
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Gas separator of insert oil-well pump Body with conical seat is connected to flow string. Liner provided with suction valve in lower part thereof is joined to the body. Deep-well sucker-rod pump is installed in conical seat provided with seals. Arranged in receiving chamber of the sucker-rod pump is sliding piston with injection valve. Receiving chamber has suction valve. Cavities separated from hole clearance with membranes are arranged in the body. The membranes may sustain extreme pressure. Cavity is hydraulically communicated with liner interior through channel. Fishing chamber is arranged in the body. |
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Method for gaseous hydrocarbon production Method involves drilling vertical producing well to ground surface; stimulating fluid including gaseous and liquid fractions inflow from underground reservoir into producing well within production interval; separating reservoir fluid into gaseous component and liquid one along with gaseous component flow rate control in vertical producing well to maintain gaseous component flow rate below threshold flow rate value, which provides reservoir fluid separation inside producing well without the use of separator; delivering gaseous component to ground surface via producing well; accumulating liquid component in producing well to create liquid column having pressure within producing well draining interval exceeding that of surrounding reservoir; providing liquid draining from liquid column in surrounding reservoir along with producing well wall treatment within draining interval and/or reservoir treatment around draining interval to increase liquid discharge into surrounding reservoir. |
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Well gas separator with bearing support Device contains shaft, body, input apertures for well liquid, separation drum, channel for draining gas, channel for draining liquid, bearing support mounted on the shaft. Aforementioned support is provided with screw micro-pump and suction channel for feeding liquid to aforementioned support. Bearing support is positioned above the level of input aperture of channel for draining gas. Part of liquid from liquid draining channel passes through suction channel. Lower section of bearing support also is a screw micro-pump. Bearing bushing of bearing support acts also as screw micro-pump. Pump step and screw micro-pump provide for passage of liquid from suction channel to gas draining channel. |
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Separation plant contains separation chamber open from below mounted in well with pipeline for intake of water-oil emulsion connected to upper part of chamber, pipelines for draining oil and water. In accordance to invention along height of chamber at distance equal to 8-10 chamber diameters, a row of vortexes is positioned made in form of blades. Blades of next row of vortex are positioned with displacement relatively to blades of vortex of next row. Oil draining pipeline is connected to well mouth. Water draining pipeline is mounted inside the chamber coaxially with it length-wise, appropriate for well length. Lower end of water draining pipeline is made in form of cone with slit recesses made on the surface. |
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Device includes separating chamber and outlet aperture for water below separating chamber. As separating chamber device uses lower section of well limited by casing string and separating collar, which is mounted on tail, connected to immersed electric motor of electric centrifugal pump, suspended in well on tubing column. Tail in lower section below separating collar is provided with limiter, and in upper section above separating collar - with outlet aperture for water. As outlet aperture for oil, draining pipe is used with windows and branch pipes for connecting space below separating collar and space above the intake of electric centrifugal pump. On the tail below separating collar a cover is positioned with possible vertical movement along the tail in form of a barrel with guides for which it is possible to contact tail limiter and also walls of internal surface of casing string of well using spring-loaded dentils. |
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Device for in-well gas separation Device includes two concentrically positioned pipes, centrifugal type separator with inlet for gas-liquid flow from tubing column, draining unit hydraulically connecting separator to tubular space of tubing string, made in form of tail connected to tubing string, a branch pipe positioned concentrically in the tail with possible creation of hydraulic valve isolating hollows of tubing string and a concentrically positioned pipe of large diameter. Centrifugal type separator is positioned in the tear of tubing string close to well mouth. Large diameter pipe is hermetically connected to tubing string above and below the tear, in lower section tubing string is provided with electric centrifugal pump, and in upper section is connected to ejection line of well at well mouth. Centrifugal type separator is made on upper end of branch pipe closed from above, and connected to lower section of tubing string from below. Separator is connected to upper part of tubing string, divided on two sections by a wall and provided with pipe for draining gas from below the wall into upper part of large diameter pipe, and above the wall has apertures for influx of water into upper part of tubing string. Large diameter pipe on internal side is provided with water level indicator, positioned below the upper end of gas draining pipe, and overflow valve for letting gas into behind-pipe space of well, connected to oil line through reverse valve. |
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Well device for separation of oil and water Device for separation of oil and water includes dividing chamber with static separator and outlet apertures for oil and water. As dividing chamber, lower part of well is used, limited by casing string and dividing collar, which is mounted on tail connected to immersion electric engine of electric centrifugal pump suspended to well on the tubing string. Tail in lower part below dividing collar is provided with limiter, and in upper part above dividing collar - with water outlet aperture. As oil outlet aperture, draining pipe is used with windows and branch pipe for connection of space below diving collar and space above the intake of electric centrifugal pump. On the tail below dividing collar, cover is positioned in form of barrel with possible vertical movement along the tail. Cover has guides made in form of sleeves with possible contact to tail limiter, and with internal surface of casing string wall by means of its external spring-loaded dentils. Static separator is made of external and internal concentrically positioned pipes, closed from below, with circular space between them, divided by walls with horizontal apertures on sectors. Upper pipe is closed from above, in upper section in sectors is provided with apertures for influx of separated oil into sub-collar zone and across whole length has radial apertures for intake of liquid into half of sectors as in every second sector. Internal pipe being an extension tail, across whole length in remaining sectors has radial apertures for intake of water into it and further into tail, while total area of inlet, and also outlet apertures is not less than cross-section area of product column of well. |
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Filter-separator for cleaning and coarse drying of methane gas Device includes two modules, each one of which contains cylindrical body with tangentially positioned branch pipes in its upper or lower sections. Positioned in the body are vessel for accumulating condensate, connected to output axial channel in its lower part, and filtering element with rigid perforated frame, cover and crater. In first module, filtering element is positioned on the outside of frame, cover is open in upper section, and mounted with a gap between body and filtering element. Second module is provided with tail open in lower section and a cowling mounted inside it, filtering element is positioned in it on the internal side of frame, enveloping tail with a space. Frame in first module, tail and frame in second module by their upper parts are connected to supporting bushings, mounted in upper part of body of appropriate module. Modules are interconnected mutually by means of tangentially positioned branch pipes in upper parts of their bodies. Branch pipe in lower part of body of first module is the inlet branch pipe, and branch pipe in lower part of second module - the outlet branch pipe. |
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Device comprises body made as sub, as well as tail end and filter made as helical spring. One spring end is fixedly connected to the sub, another one is secured to tail end. Spring ends are arranged in internal cavities of sub and filter correspondingly. Device also has bush and guiding rod. Lower end of guiding rod is connected to tail end, upper one is fastened to bush. The bush may perform axial movement with respect to the sub. Device is also provided with separation unit, limiting finger and valve made as cylindrical float with needle. The separation unit is shaped as auger wound around hollow pipe provided with radial channels. Upper part of hollow pipe has seat. Separation unit is located in sub interior. Limiting finger is installed in hollow pipe interior over radial channel location area. The float is arranged inside hollow pipe and may perform axial displacement relatively the pipe to close the seat and to cooperate with limiting finger. Needle is coaxially installed on upper float end. Longitudinal grooves are made along the full spring strip length from overlapped spring coil side. |
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Gas separator for submersed centrifugal pump Device comprises body with gas-liquid mixture inlet orifices, channels adapted to supply degassed liquid to pump and separated gas discharge into hole annuity. Device also has shaft-mounted pressure stage and centrifugal separator. Device is also provided with axial fan or vortex or liquid-packed stage, which are mounted on shaft downstream of centrifugal separator in gas-liquid mixture flow direction. Axial fan or vortex or liquid-packed stage provide depression in central cavity of centrifugal separator and forced separated gas discharge into hole annuity. |
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Submersible pumping installation for oil production Pumping installation comprises pump lowered in well and provided with submersible electrical motor, centrifugal solid particle separator and precipitation tank. Centrifugal solid particle separator is arranged below submersible electrical motor and may transmit torque from submersible electrical motor shaft to centrifugal solid particle separator shaft. Centrifugal solid particle separator rotor is enclosed with fixed helical grid. Helical grid blade direction is opposite to direction of centrifugal solid particle separator rotor rotation. |
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Separator for submersible pumps in wells Device comprises body, filtering net for fluid passage through the net. Separation drums adapted to divide fluid flow by density, as well as three-chamber unit to divide fluid into gas, liquid and mixture including liquid and mechanical injuries, and liquid and gas flow alternation stage are installed in submersed engine shaft. Device also has the first dispersion means to mix gas and mechanical injuries with liquid and unit to discharge mixture of gas with mechanical injuries. Above unit comprises bypass pipe, which bypasses centrifugal pump inlet and extends to outlet thereof. The device also has the second dispersion means to mix cleaned liquid with residual free gas and to supply the mixture to centrifugal pump inlet. Device includes pumping-and-injection system to create vacuum in bypass pipe, which provides flow of mixture including gas and mechanical injures and to merge above mixture flow with flow passing from centrifugal pump in flow string at centrifugal pipe outlet. |
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Device for magnetic well fluid treatment Device comprises body with side orifices and closed from bottom part thereof, cup-shaped pipe, which is concentric to the body and connected with one or several cylindrical cartridges in upper part thereof. The cartridges are formed of diamagnetic material and provided with constant magnets arranged along a circle so that channels are created in-between. The channels are adapted for fluid passage, magnetization and cleaning. |
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Method involves separating flowable product into hydrocarbon flow and water flow; simultaneously injecting chemical in preselected well zone. System comprises downhole separation device for product separation and chemical injection device. Separation device includes separation means to divide product flow into oil and water ones, injection pump to supply flowable product to separation means and pump to extract hydrocarbon flow to day surface. Chemical may be injected in well production zone and transported by water flow to treat both well zones with chemical. Chemical may be injected directly into injection well zone. |
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Oil-well centrifugal pump gas separator Invention can be used at mechanized production of crude oil with high content of gas in oil by means of submersible centrifugal pump. Housing 1 of gas separator accommodates the following devices series-connected on shaft: auger 3, axial impeller 4, straightening vane assembly 5, operating impeller 6 and separators 7. Movable blades 8 of axial impeller 4 and fixed vanes 9 of straightening vane assembly 5 form axial stage of pump which increases head of gas-liquid mixture in passage part of gas separator, thus providing effective discharge of separated gas. Blades of working impeller 6, vanes of straightening vane assembly 5 and blades of axial impeller 4 are installed at definite inlet and outlet angles, and blades of working impeller 6 are clamped by outer rim. |
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Gas separator with automatic level control Gas separator comprises sedimentation vessel having fluid inlet section formed in upper part of side surface thereof and performing vertical displacement. The gas separator also comprises packer installed over the sedimentation vessel and valve. The valve controls gas flow from lower side packer surface to upper side surface thereof. The valve is connected with sedimentation vessel so that valve is actuated under vertical sedimentation vessel movement. Downhole equipment comprises gas separator, production string for liquid extraction and gas outlet pipe connected to valve. Sedimentation vessel at least partly encloses production string. Production string is adapted to extract liquid from sedimentation vessel with the use of pump. Gas separation method involves installing sedimentation vessel; injecting two-phase mixture into upper part of the sedimentation vessel to create falling fluid flow to separate thereof into gas and liquid fractions; accumulating liquid fraction inside sedimentation vessel; regulating gas fraction; extracting liquid fraction from sedimentation vessel and performing valve opening and closing depending on vertical sedimentation vessel position. |
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Method and device for well fluid cleaning of large particles Method involves separating large particles from ascending well fluid flow to be pumped; grinding the large particles and introducing the grinded particles in hole annuity. Device for above method realization comprises shaft, body with inlet and outlet orifices, particle separation means and grinding means adapted to introduce grinded particles into hole annuity. The grinding means is made as movable grinding member carried by shaft and fixed grinding member installed inside the body. The movable and fixed grinding members cooperate one with another during shaft rotation. |
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Device comprises suction connection pipe with axial and radial channels, cups serially arranged one above another inside the suction connection pipe and accumulating pipe. The radial channels are in level with each cup bottom. Cup height is determined from analytic expression. Summary cup volume is selected such that summary volume of formation fluid filled in the cups exceeds fluid volume supplied by sucker-rod pump per one pump operation. |
Another patent 2528761.