Differentially balanced pumping unit
FIELD: mechanics, oil and gas industry.
SUBSTANCE: unit is intended for using as deep well pump for oil production from oil wells. The unit consists of a platform, pedestal with gearbox and rack being installed on it, electric motor coupled with gearbox through multiple V-belt drive. Differential crank converting mechanism is installed on the gearbox output shaft. The above mentioned converting mechanism contains two cranks interrelated through planetary gear. The central crank is rigidly installed on the gearbox output shaft. Driving crank with tension pulley is mounted on the central crank output shaft. Polished rod carrier bar is installed at the other side of gear box. The rack is installed on pedestal between polished rod carrier bar and tension pulley of driving crank. The oscillating equal-arm rocker is movably mounted on the rack and immovable heads are rigidly fixed to the rocker ends. From the side of converting mechanism cranks, the rocker head is connected with tension pulley of driving crank, while the other rocker head is coupled with polished rod carrier bar from the side of the above bar. The rack and rocker are implemented so that the rocker can rotate around its axis. The rocker head edges are in vertical plane, which is at some distance away from the wellhead. It is provided by the invention that balanced pumping unit design is implemented so as rack with rocker and converting crank mechanism being placed at one side of gearbox. Comfortable conditions for drive repair operations.
EFFECT: linear reciprocal motion of tension pulley is ensured on driving crank.
3 dwg, 4 cl
The invention relates to techniques for extracting oil from wells and can be used to drive a sucker rod pumps.
Known machine-rocking with Centerpoint Preobrazhensk mechanism. It contains a frame, a rack associated belt-driven motor and gear, balancer mechanism for converting rotational motion of the output shaft of the gearbox in the reciprocating movement of the suspension wellhead rod. This mechanism consists of a crank placed on the output shaft on both sides, pivotally connected with the cranks rods which traverse through associated with movably mounted on the rack two shoulders oscillating balance wheel with a head on which is fixed a flexible element with suspension wellhead rod (GOST 51763-2001, Drives a sucker rod pumps, Gosstandart of RUSSIA, Moscow, p.3 1).
The disadvantage of this pumping unit is that converting mechanism includes a swinging rods and traverse that leads to alternating horizontally efforts, acting on the rack and sway steel, and in case of breakdown of one of the rods to damage the metal.
Also known machine-rocking with the differential crank transforming mechanism containing a base, a pedestal installed re what Octomom and stand with crossbar and the guide pulleys, the drive motor, V-belt transmission. Such a pumping unit on the output shaft of the gearbox, on the one hand, has a differential crank transforming mechanism leading to the crank which is connected through a flexible element through the guide pulleys of the crossbar, with suspension wellhead rod, which is located on the other side of the gearbox than Krivoshey mechanism (EN 2270367 C2, 20.02.2006).
The disadvantage of this pumping unit is that the guide pulleys have relatively small diameters, which reduces the service life of the flexible element, and that the design of the crossbar is complicated due to the necessity of using a special mechanism for rotating and fixing the position of the crossbar when executed on the well repair work.
The purpose of this invention is to provide a pumping unit conversion mechanism which eliminated the disadvantages of the machines-rocking with Centerpoint and differential transforming mechanisms.
This task is achieved by the fact that the rack movably mounted rocker with two fixed heads at its ends, and the head of the balancer-side differential crank-changing mechanism by means of a flexible element connected with the tensioning pulley of a driving crank this mechanism is ZMA, and the other head from the suspension wellhead rod, by means of another flexible element connected with the suspension wellhead rod, at this hour, and the balancer is made with the possibility of rotation of the balance wheel around its axis, while turning towards cranks up its vertical position.
The shoulders of the balancer can be equal to and not equal to each other. Then at constant radii of cranks, if the length of the shoulder of the balance weight from the suspension wellhead rod is greater than the length of the shoulder of the balancer from the cranks, then increasing the length of the stroke, and Vice versa, if the length of the shoulder of the balance weight from the suspension wellhead rod is smaller than that of the crank, it increases traction.
Such design of the pumping unit is simple and reliable. Compared with the known machine-rocking with differential converting mechanism with the crossbar and the guide pulleys increases the bending radius of the flexible element, which increases its durability. Eliminates the mechanism for rotating and fixing the crossbar, which simplifies the design of the pumping unit. Compared with the known machine-rocking with Centerpoint transformative mechanism simplifies the design and improves reliability because there is no swinging rods, traverse and tilt head balancer, front-loaded vertical only what silemi.
The described machine-rocking chair can also be carried out according to the scheme, when the hour and a differential crank transforming mechanism located on one side of the gear and the axis of the rack and the longitudinal axis of the balancer are in a vertical plane passing through the axis of the output shaft of the gearbox.
Figure 1 is a schematic representation of the proposed differential-balancer machine-rocking; figure 2 schematically presents a side view; figure 3 presents a variant of the pumping unit when the hour and converts differential mechanism located on one side of the gear and the axis of the rack and the longitudinal axis of the balancer are in a vertical plane passing through the axis of the output shaft of the gearbox.
A conventional pumping unit comprises a base 1, a stand 2, a motor 3, which is connected through V-belt transmission 4 gear 5, which converts the differential crank mechanism, which is mounted on the output shaft with one hand and contains two interconnected through a planetary gear of the crank - Central 6, rigidly mounted on the output shaft 5, and the leading crank 7, mounted on the output shaft of the Central crank 6. Suspension wellhead rod 8 is located on the other side of the gearbox. Hour 9 is located directly on the Cabinet above the gearbox, and podi is installed but oscillating weight 10 with two rigidly mounted at its ends by heads 11 and 12. The tension pulley 13 mounted on the master crank, connected with the first cylinder 11 of the rocker by means of the flexible element 14, and the suspension wellhead rod 8 through a flexible element 15, is associated with another cylinder 12 of the balancer. During this 9 hour set so that its axis, the longitudinal axis of the balancer 10, axle suspension wellhead rod 8 and the mounting point of the tension pulley 13 on the master crank 7 is located in the same vertical plane passing through the axis of the output shaft of the gearbox 5. To balance pumping unit on the master crank installed cargo 16. On the input shaft of the gearbox is also a brake device 17. Fencing and grounds for maintenance of the pumping unit conventionally not shown.
A conventional pumping unit operates as follows.
The rotation from the electric motor 3 through V-belt transmission 4 and the gear 5 is transmitted to the Central crank 6 and through the gears leading to the crank 7 with the tension pulley 13 differential crank transformative mechanism. While the tension pulley on the master crank gets the vertical rectilinear reciprocating motion and through the flexible element 14 and the cylinder walking beam 11 rotates the body of the balancer 10, and through the head 12 of the balancer and the flexible element 15 passes the vertical movement of the suspension wellhead rod 8. While traction is when lifting the suspension wellhead rod 8 is composed of forces from gravity loads, crank and torque transmitted by the gearbox, and when lowering the pulling force from the suspension wellhead rod is passed through the equalizer and flexible elements on the tension pulley of a driving crank and, together with the force from the torque transmitted by the gearbox, provides lifting cranks.
Advantages of pumping units are extremely compact and robust design. There are no weak links as rods, yoke, swivel head, inherent in the known balancing machines, front-loaded only vertical efforts, and therefore no forces sway design. The cranks rotate counter, and therefore the dynamic pressure is minimized. Head balancer rigidly connected with the body of the balancer and have large radii, which is favourable for increasing the service life of the flexible element. Provides ease of maintenance for repair works through simple rotation of the balancer with his head in the direction of the cranks to its vertical position. When this position of the rocker edges of the heads of the balancer from the side of the wells are located in a vertical plane, spaced from the wellhead at a distance, and forms a space for holding the well repairs. It does not require fixation ve the vertical position of the balancer, as it will be held in this position due to unbalanced relative to the vertical axis of the rack mass.
Is of practical interest is also a variant of the pumping unit when the hour with a balance wheel with hand crank and the axis of the rack and the longitudinal axis of the balancer are located in a vertical plane passing through the axis of the output shaft of the gearbox. In this case, the strut with a stabilizer, in fact, installed on the well fixed and connected with the drive only flexible element. Therefore, it is convenient for maintenance and repairs of the drive pumping unit, and if necessary, replace gearbox repair, or installation of gears with different gear ratio, if necessary, a dramatic change in the frequency of oscillations of the pumping unit.
1. Differential-balancer machine-rocking containing the base Cabinet with the attached gear and rack drive motor, V-belt, reducer, the output shaft of which one side has a differential crank transforming mechanism, suspension wellhead rod, which is located on the other side of the gearbox than a crank mechanism and a flexible element, characterized in that the rack movably mounted rocker with two fixed heads at its ends, when the eat the head of the balancer-side differential crank-changing mechanism by means of a flexible element connected with the tensioning pulley of a driving crank of the mechanism, and the other head from the suspension wellhead rod, by means of another flexible element connected with the suspension wellhead rod, at this hour, and the balancer is made with the possibility of rotation of the balance wheel around its axis, while turning in the direction of the cranks to its vertical position.
2. A conventional pumping unit according to claim 1, wherein the balancer is made with the dimensions of the shoulders, are equal to each other.
3. A conventional pumping unit according to claim 1, wherein the balancer is made with the dimensions of the shoulders, not equal to each other.
4. A conventional pumping unit according to claim 1, characterized in that the hour with the balancer and differential crank transforming mechanism located on one side of the gear and the axis of the rack and the longitudinal axis of the balancer are in a vertical plane passing through the axis of the output shaft of the gearbox.
FIELD: engines and pumps.
SUBSTANCE: invention relates to oil production, namely to pumping units to force extracted local water into petroliferous stratum to keep up formation pressure therein. The proposed unit comprises a casing string coupled with a deep-well pump incorporating a cylinder with suction valve and a plunger with pressure valve lowered into operating well string with perforated parts opposite the petroliferous stratum and water producing formation. The wall packer is fitted on the pumping pipe string end and closes the hole clearance above the water producing formation. The tubular pump is arranged in the pumping pipe string above its end. The cylinder is furnished with lateral holes arranged at such a level that, with the plunger in its BDC, the said holes are open and communicate hydraulically the pumping pipe string inner space with the wall hole clearance above the packer, and, with the plunger in TDC, the said holes are blocked.
EFFECT: possibility to use whatever-type pump, to adjust forcing water a integral system of keeping up formation pressure and to exploit petroliferous stratum free areas with weakly-permeable reservoirs thanks to independent pumping in.
FIELD: engines and pumps.
SUBSTANCE: invention is related to oil industry and may find application in oil production from two beds of single well. The plant includes sucker-rod pump with plunger, cylinder, suction and pressure valves. Cylinder is equipped with side valve with filter. Auxiliary cylinder with side holes is fixed in cylinder, as well as jacket with provision of annular space between auxiliary cylinder and annular space jacket. Lower end of cylinder is plugged with plug. Suction valve, filter and tail with packer at the end are fixed on jacket. Plunger is arranged as combined, consisting of upper and lower plungers connected with stem with valves, with installation of upper plunger inside cylinder and lower plunger inside auxiliary cylinder. Lower plunger and stem have channel for communication of space above and under lower plunger. Upper plunger and stem have channel for space connection under upper plunger with inlet to upper plunger valve.
EFFECT: provision of serviceability at any values of pressure in operated beds and possibility to operate only one of beds.
FIELD: engines and pumps.
SUBSTANCE: device is designed for application in the field of oil production by well pumps. Drive comprises guide link shaft having gear and drum joined to electric motor, annular body installed on support and having base and cover with nozzle joined to pump-compressor pipe. Cylindrical protrusion is arranged on free end of guide link shaft gear. Long slot is arranged on cylindrical surface of cylindrical protrusion at the end. Gear wheel is installed parallel to gear and at the same distance from base axis. It is arranged with dimensions and cylindrical protrusion similar to dimensions and cylindrical protrusion of gear. Concave gear ring is installed inside body, and convex gear ring is installed on cover. Teeth of convex and concave gear rings are engaged with gear and gear wheel teeth. Coaxial cartridges are arranged on ends of convex and concave gear rings. At least two brackets are rigidly fixed and installed on internal flat surface of base perpendicular to this surface. Arc-shaped concave thrust is fixed at free ends of brackets, at that it is arranged with internal diametre equal to external diametre of convex gear ring cartridge external diametre, and internal diametre equal to sum of external diametre of this cartridge plus double depth of long slot. Another arc-shaped convex thrust is installed and fixed to free ends of brackets, and it has external diametre equal to internal diametre of concave gear ring cartridge. There is plank installed between arc-shaped thrusts and body cover, and it has long slot in the form of, for instance, dovetail. Drive is equipped with detector of concave and convex gear ring rotations number. Arc-shaped thrusts of gear and gear ring cylindrical protrusions are separated into two parts. Hinge axis is installed perpendicular to internal end surface of base and is installed in hole arranged in separated end of arc-shaped thrust with inclined surface. Arc-shaped thrusts with inclined surfaces are equipped with fixed joined spring-loaded levers. Free end of every lever contacts with side cylindrical surface and bottom of sprocket hub groove. Base has additional nozzle connected to counterbalance cylinder and equipped with flexible element. Flexible element is fixed by its one end to drum, and by the other - to counterbalance. Additional nozzle is connected to pump-compressor pipe of another well. In order to define place of gear ring installation, with combined apertures of long slots of cylindrical protrusion of gear and cartridge of concave gear ring, gear is turned by 180 degrees to combine apertures of slots of cylindrical protrusion of gear and cartridge of convex gear ring, gear ring convex cartridge is turned to the side of gear wheel axis installation to match line passing along axis of symmetry of cross section of long slot of convex gear ring cartridge, with middle of arc passing along circumference of concave gear ring reference diametre, selected from axis of symmetry of cross section of nearby long slot of concave gear ring cartridge to the side of gear ring installation place, and equal to length of gear reference diametre circumference, afterwards line matched with arc middle is projected to surface of base, and mark is made in the middle between circumferences of reference diametres of concave and convex gear rings on this line.
EFFECT: increased service life of well pump due to provision of electric motor rotation without stops.
6 cl, 17 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to oil and gas production and is operated for oil extraction by well rod pumps in simultaneous operation of two formations using two plunger pumps. The proposed drive represents a pumping unit additionally incorporating props arranged on the frame to accommodate rigidly interconnected pulleys whereto one ends of cables are fastened to form, two by two, cable pairs. One pair is connected by its one end with the pumping unit suspension, the other pair is connected to the second drill rod string and the third one is coupled with the balance box arranged between the aforesaid props to be moved there between driven by rollers. To vary the drill rod string length travel, the pulley diameters are selected subject to the drill rod string length-to-length ratio.
EFFECT: higher efficiency of oil extraction, lower power consumption.
1 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil and gas industry, particularly to pump installations of well. The installation consists of production string, of a column of hollow rods, of a packer and a differential pump with upper and lower hollow plungers. The suction valve of the upper section of the differential pump is installed at side, while the pressurising one - in a bypass channel of the upper section conjugated with the cavity of the production string. The bypass channel is made in the upper plunger. The upper plunger is assembled on the hollow rod so, that fluid can overflow; the upper plunger is designed to perform limited axial travels. From below the bypass channel is equipped with a seat of the pressurising valve, while the hollow rod is equipped with its locking body arranged on the exterior surface of the hollow rod and with a pusher interacting with plunger from above.
EFFECT: simplification of installation design, increasing of its efficiency, particularly at high viscosity of reservoirs, facilitation of installation regulating for reservoir yields.
FIELD: oil and gas industry.
SUBSTANCE: drive contains frame assembled on base and engine placed there on, two coupled mechanisms, converting rotating movements into reciprocating; these mechanisms are connected with carriage, containing two pairs of pulleys, enveloped with flexible continuous links with breaking devices, operating in antiphase and connected with control mechanism, interacting with arresters. The carriage is periodically connected either to ascending, or to descending branches of the continuous flexible link. Also there is provided a required length of run of the column of rods. The moments of switching are determined by the position of the arresters on posts of the drive. A bracket is made self-orientating.
EFFECT: invention allows changing length of run of rods column, also it reduces power consumption for friction and at overcoming bending moments occurring from rods warp, it also increases reliability of drive.
6 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: drive contains frame and motor placed thereon. It also contains the mechanism converting rotating motion into reciprocating, which has a driving pulley and curvilinear guiding element, enveloped with a flexible continuous link. The latter is connected with a carriage, coupled with a counterweight, which is connected with rod column via the flexible link by means of a bracket unit. The bracket unit is made in form of a double movable block with a flexible link, the ends of which are secured on posts, installed symmetrically to the drive axis. The rods column is connected to a self-orienting block, enveloped with the flexible link. The posts are equipped with a graduation scale, the value of which varies from 0.2 to 2. The bracket unit facilitates smooth variation of length of drive run.
EFFECT: facilitates increased efficiency of drive operation.
FIELD: engines and pumps.
SUBSTANCE: invention relates to oil production and can be used in cluster well operation using rod pumps. The rod pump cluster drive comprises a motor, a reduction gear with a crank and counterweight, posts with guide pulleys, rope suspensions with fasteners and mouth sealers. The proposed drive is furnished with dynamic load killer representing a two-arm lever running free on the shaft fitted on the crank. Note the mouth sealers are set inside the hole and represent tight pairs "long cylinder - short con rod" with diameters not less than those of the working pump.
EFFECT: higher serviceability due to killing dynamic loads, smaller sizes metal content ensured by reduced overall dimensions of guide pulley posts and drive base.
FIELD: oil and gas industry.
SUBSTANCE: device is meant for being used in oil industry, and namely in equipment intended for lifting the fluid out of wells for simultaneous separate operation of formations in the well with oil-well pumps. Device consists of a packer separating formations in the well, long and short flow columns, two oil-well pumps, double-shaft wellhead equipment and two surface drives of oil-well pumps, which are located opposite each other. Oil-well pump drives consist of a support frame, a rack, a motor, transmission and mechanism which converts the motor rotational movement into back-and-forth movement of a flexible output link connected to a stem. Frames are installed on the base with guides, which is located on the foundation. Frames are made so that they can interact with the guides, and drives of oil-well pumps can move along them in a longitudinal direction to the sides from the well. Racks of oil-well pump drives are connected to each other with a detachable link which fixes position of oil-well pump drives in operating position.
EFFECT: simplifying installation of drives, improving operating reliability of the device, providing certain conditions required for repair work, and providing the possibility of improving oil-well pump capacity under restricted well diameter conditions by increasing travel length of surface drives without sharp increase in their dimensions and weight, and by reducing foundation loads.
3 cl, 3 dwg
FIELD: engines and pumps.
SUBSTANCE: device is designed for application in pump set in the field of mechanised oil production. Pump set comprises bracket (3), which is vertically fixed to connection end of basis (2) and wellhead. Pulleys (4, 5, 6) are fixed in one and the same plane with upper end of bracket (3), at that the other end of bracket (3) has electric motor (1) and reduction gear (8) serially fixed to it. End head of output shaft (9) of reduction gear (8) is connected to crankshaft (10), top end head of which is connected to movable pulley (11) located in the same plane with fixed pulleys (4, 5, 6). Flexible rope (13) is vertically suspended in center of wellhead and is serially passed through fixed pulleys (4, 5, 6) and movable pulley (11), and then fixed to basis (2). At the bottom flexible rope (13) is connected to plunger wellhead sealed pump (12) and with plunger deep-well oil pump (17). The present pump set is characterised by high running operational characteristics, having high effective load coefficient. In order to reduce energy consumption in process of works performance related to lifting and lowering of plunger deep-well pump (17), auxiliary drive capacity of the set may be used in combination with special tools. Pump set also has smaller dimensions and weight.
EFFECT: reduction of energy consumption, dimensions and weight of pump set.
8 cl, 3 dwg
FIELD: lifting of liquids from deep wells.
SUBSTANCE: proposed unit contains submersible pump, pressure tubing string, drive shaft consisting of sucker rods whose ends are provided with slots and which are installed inside connectors. The latter are made in form of bushing with inner cylindrical ring groove in middle part and through longitudinal slots on end sections in number corresponding to number of slots on sucker rods, and blind slots located between through slots. Blind slots are made open from side pointed to cylindrical ring groove and are through in radial direction.
EFFECT: improved operation reliability, reduced service expenses, simplified design.
FIELD: oil producing industry.
SUBSTANCE: invention relates to lock supports of insert sucker-rod pumps. Lock support housing accommodating spring-loaded valve with retainer. Spring of valve is installed on stop. Support has two cylinders of different diameters, upper cylinder being connect by sub to insert pump. Spring-loaded valve is provided with guides. Hole from side of retainer in form of sheared dowel is made in one of guides, and ports are made in other guide and in lower cylinder of smaller diameter.
EFFECT: simplified design, improved reliability.
FIELD: oil production industry.
SUBSTANCE: proposed plant is designed for completion of oil and gas wells producing hydrocarbon materials. Plant contains deep well pump with delivery and suction valves and pump drive made in form of stepped cylinder with piston. Pressure accumulator is made in form of elastic ball placed in larger step of cylinder. Pump plunger is sealed in upper part by gland packing. Interaction of pump piston with drive is provided by water hammer. Oil is used as intermediate liquid in drive.
EFFECT: provision of effective recovery of oil or gas at minimum expenses.
FIELD: oil industry.
SUBSTANCE: method is based on measurement of actual current of engine at double drive of rod with working plant, comparison of its values at upward rod drive and downward rod drive, stopping plant, moving loads on crank with repeated launch, measurement and comparison of said current values. Additionally, during operation of device, time of downward and upward rod drives is measured. On basis of measured current values its average quadratic values are determined during upward and downward rod movement on basis of given formulae. Then value of balance coefficient Kbal is determined. When Kbal=1 plant is considered balanced. In other case plant is stopped and loads are displaced relatively to current position proportionally to value of Kbal.
EFFECT: higher efficiency and effectiveness.
FIELD: general engineering; oil producing industry.
SUBSTANCE: proposed surface drive of submersible screw pump contains reduction gear with vertical input and output shafts, engine arranged on side surface of reduction gear housing and installed for displacement, torque transmission V-belt drive and brake device. Brake includes two spaces sealed relative to each other. One space filled with oil accommodates shaft of reduction gear with overrunning clutch fitted on. Second space non-filled with oil, accommodates friction device consisting of friction member and disk which serves simultaneously as body of overrunning clutch. Adjusting device acting onto friction member is provided to regulated brake torque.
EFFECT: improved reliability and efficiency of drive in operation, provision of stepless killing of reactive torque of rotating string with engine shut down, prevention of turning out of threaded joints.
4 cl, 5 dwg
FIELD: positive-displacement machines or pumps.
SUBSTANCE: clamping device is mounted at the well mouth and comprises housing with the recess for mounting and dismounting hinged jaw provided with socket for setting the collar of the pump rod. The jaw is pivotally connected with the housing. The setting socket for the head of the rod is made between the housing and jaw. The section of the contact surface is made on the housing, and the axis of the pivot can move a distance from the contact surface of the socket in the housing.
EFFECT: enhanced reliability.
FIELD: oil producing industry.
SUBSTANCE: device is designed for mechanized recovery of oil and gas by well sucker-rod pumping units. Proposed pumping unit has base, Sampson post, double-arm rotary walking beam with flexible suspension of rod, crossmember with connecting rods, cranks with counterweights. Front counterweight in direction of movement has longitudinal slot with guides and disk-weight installed for movement square to axis of crank rotation. Mass of front counterweight with disk-weight is equal to mass of rear counterweight in direction of movement. Disk-weight can be fixed by means of stop pin for balancing the pumping unit. Stop pin is installed in holes of housing of front counterweight and disk-weight. Thanks to it torque on cranks at lifting of sucker-rod string is increased and dynamic loads on electric motor drive are equalized.
EFFECT: reduced power consumption, increased economy.
2 cl, 3 dwg
FIELD: oil producing industry.
SUBSTANCE: device is designed for driving deep-well sucker-rod pumps. In proposed differential pumping unit differential crank mechanism is used as transforming mechanism providing straight-line reciprocation of point of attachment of tension pulley on drive crank. Said transforming mechanism is installed on output shaft of reduction gear from one side. Post with guide pulley is arranged at this side also. Axle of part is in vertical plane passing through axis of reduction gear output shaft. Radii of central and drive cranks are equal to each other. Tension pulley is mounted of drive crank over which flexible member is passed. Said tension pulley is coupled through guide pulley installed on post with polished rod carrier bar. Cranks are interconnected and they rotate in different directions. Length of stroke is equal to sum of four radii of cranks. Pumping units are most efficiency at length of stroke from 2.5 to 5 m.
EFFECT: provision of larger length of stroke at more rational design.
3 cl, 3 dwg
FIELD: mechanical engineering; well pump drives.
SUBSTANCE: invention is designed for use in units operating well pumps designed for lifting liquids from depth. Proposed device contains base on which frame with platform is installed for drive unit with hole to drive output link. Platform is connected with frame by hinge joint for turning relative to axis in plane parallel to axis of hole in platform.
EFFECT: improved convenience in operation owing to provision of access to well, wellhead equipment and drive at repairing and servicing of wellhead equipment and drive without demounting of drive.
7 cl, 1 dwg
FIELD: oil production, particularly oil and gas well development for hydrocarbon material.
SUBSTANCE: device comprises check valve, piston, receiving windows, depression chamber and valve with spring. The device is made as swabbing means and depression chamber connected one to another by threaded subs. The swabbing means consists of rope fastening unit, cylinder, hollow shaft, piston and valve with spring. Cylindrical valve is installed in lower part of depression chamber. The cylindrical valve is made as a sleeve with beveled lower end surface.
EFFECT: increased efficiency of well development due to impulsive action application to productive bed.