Plant for dual operation of two beds
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.
The invention relates to the oil industry and can find application in the extraction of oil from two layers of one well.
Known pump installation for separate operation of several layers, which includes a column of lift pipes, pump rod, the retainer and the shank. Pump rod is provided with an additional suction valve located on the side wall of the cylinder that divides the cylinder along the length into two parts, proportional to the capacity of the reservoirs. The facility provides the opportunity to enter the pump cylinder during the movement of the plunger up first production of low-pressure reservoir, and after passing the additional plunger valve products high-pressure reservoir (RF Patent No. 2221136, published. 2004.01.10).
The disadvantage is the complexity of the separation cylinder, depending on the performance of layers and practical inefficiency in the changing rate of at least one of the layers, which in practice often occurs.
Closest to the proposed invention the technical essence is oil well pumping installation comprising a pump rod with the plunger, cylinder, suction and discharge valves, pipe positioned concentric with the pump cylinder and forming with him a sealed chamber, with the Windows of the mi in the upper part of the flow of fluid in mudplugger region of the pump, with the thread allocator with an additional valve and the through channels (RF patent No. 2293215, published. 2007.02.10 - prototype).
The installation allows to sample fluid from two layers with different pressures. However, the installation has the following disadvantages:
the dependence of plant operation from the differential pressure operated reservoirs. At small values of the pressure difference of the exploited layers of the installation becomes impossible;
- not the actual selected flow rate of each layer is calculated, thus, it is difficult to prescribe the optimal flow rate of each layer according to the modes of development of deposits;
- required preliminary research to determine the water cut of each layer. The possibility of direct determination of the water content is missing;
the inability to operate in wells, complicated asphalt-resin-paraffin deposits (ARPD);
- has a limitation on the viscosity of the selected fluid to 0.025 PA·s);
the dependence of the structure of the pump from the bottom-hole pressure operated layers (depending on the magnitude of the pressure applied one or the other pump design);
- there is no possibility of operating only one of the reservoirs, fully isolating the other.
In the proposed invention solves the problem of ensuring robotops is the competitiveness in all pressure values of the exploited layers, the performance of the pump in accordance with the flow rates of the layers, enabling the operation of only one of the reservoirs, fully isolating the other.
The task is solved in that the apparatus for dual operation of two reservoirs, including rod pump plunger, cylinder, suction and discharge valves, according to the invention the cylinder is provided with a lateral valve with filter, fixed on the cylinder of the auxiliary cylinder with the side hole and the casing to form between the auxiliary cylinder and the casing annular space, the lower end of the cylinder is plugged by a plug, the casing is secured a suction valve, a filter and a shank with a packer on the end, the plunger is made combined, consisting of United stock upper and lower plunger valve, placing the top of the plunger within the cylinder and the bottom plunger inside the auxiliary cylinder, the lower plunger and rod have a channel for communicating the space above and below the lower plunger, the upper plunger and rod have a channel for connecting the space below the upper plunger to the entrance of the upper valve plunger.
Installation for dual operation of two reservoirs are presented in figures 1, 2 and 3.
The installation consists of a cylinder 1, provided with Boaventura 2 filter 3, on which with the help of adapter 4 attached auxiliary cylinder 5 through the clutch 6 of the casing 7 with the formation of the annular space 8 between the auxiliary cylinder 5 and the casing 7. The auxiliary cylinder 5 has a lateral opening 9. The lower end of the auxiliary cylinder 5 is plugged by a plug 10. On the cover 7 with the adapter 11 is fixed suction valve 12, the filter 13 through the clutch 14 of the shank 15. At the end of the shank 15 is fixed to the packer 16, which separates the upper layer I from the bottom of the reservoir II. Inside the cylinder 1 is placed the upper plunger 17, provided with a discharge valve 18, and inside the auxiliary cylinder 5 is placed lower plunger 19 having a channel 20. Plunger 17 and 19 rigidly interconnected by a rod 21, forming a complex combination plunger, which is driven by means of rods 22 connected with the machine-rocking chair (not shown). The rod 21 has on both sides of the openings of the reservoir fluid 23 and 24, respectively. Installation lowered into the production casing of the well 25 on the column tubing 26 and connected with the last clutch 27.
The device operates as follows.
The installation is placed in the hole 25 in the tubing pipe 26 so that the packer 16 provides a complete isolation of the two exploited layers I and II.
In position, when the pass side valve 2 is closed by the body of the plunger 17, provides an overlap of layer I. In the course of the column bars 22 and the associated plunger 17 and plunger 19 opens up the valve 12 is closed, the valve 18. The reservoir fluid from the reservoir II passes through the shaft 15, through the filter 13, the valve 12, the annular space 8, through the side opening 9, fills the space under the plunger 17, passes through the hole 23, the channel 20 and enters the space under the plunger 19. The cap 10 in the auxiliary cylinder 5 is required for isolation of the space under the plunger 19 from the liquid in the annular space 8. Until and overlap the plunger 19 of the side holes 9, the reservoir fluid is drawn only from the reservoir II. When reaching and closing the plunger 19 of the side holes 9 fluid from the reservoir II ceases to flow into the device. The pass side valve 2, an indoor previously plunger 17 opens. The reservoir fluid from the reservoir I, purifying himself in the filter 3 and opening valve 2, enters the space under the plunger 17 and through the opening 23 and the channel 20 in the space under the plunger 19. The selection of fluid from the reservoir I thus occurs before reaching the upper limit of the stroke of the combined plunger.
During the course of the combined plunger down valves 2 and 12 are closed and valve 18 is opened. The liquid accumulated in the space under the plunger 17 and 19, through the channel 20, the holes 23 and 24 is Yasnaya in the cavity of the tubing 26. Then the cycle repeats.
Thus, during one cycle of the sampling fluid occurs first from the reservoir II isolated from layer I, then from the reservoir I in isolation from the reservoir II. The selection is in complete isolation of the two layers from each other, ensuring the independence of the selection of the liquid regardless of the pressure of the layers I and II.
The installation may also work in the other two modes (see figure 2, 3).
When the reciprocating motion of the combined plunger in the interval a-b (2) only the lower reservoir II. The pass side valve 2 is closed by the body of the plunger 17, providing an overlap of layer I. In the course of the combined plunger up from a to b, the reservoir fluid is sucked through the valve 12 through the annular space 8 and the side holes 9, and fills the space under the plungers 17 and 19. During the course of the combined plunger down from position b to position and accumulated in the cavities of the installation, the reservoir fluid is pumped through the valve 18 in the tubing 26.
When the reciprocating motion of the combined plunger in the interval in (3) side valve 2 is opened, and the side holes 9 in the auxiliary cylinder 5 is closed by the plunger 19. Therefore the selection of the production well occurs only through the side valve 2 from the reservoir I. From the reservoir II selection of products does not occur.
Opportunities for the installation to work in these modes allow you to explore each operated stratum separately (to determine the flow rate, the water content, the oil recovery, etc), and to organize periodic pumping formation fluid from each reservoir with different settings and with different cycles without stopping the whole setup, adjusting the length of stroke of the polished rod pumping unit (not shown), and the number of swings.
The intervals a-b and b-g are dependent on the lengths used plungers:
La-b- the length of the interval a-b,
LPL- the length of the plunger 17,
Lin-g- the length of the interval in-g
LPL- the length of the plunger 19.
Thus, the total stroke length of the combined plunger installation will be equal to:
where Lmouth- the total length of the stroke of the combined plunger.
This dependence allows to adjust the amount of the pumped formation fluid from each reservoir, changing only the size of the lengths of the plungers 17 and 19, with the condition that the total length of the combined plunger is not changed.
The use of the proposed installation will be selected wells from each formation optimally, that provide a significant increase in oil.
Application of the proposed installation will allow you to:
- conduct research each reservoir the flow rate and water cut without attracting teams the current repair of wells, adjusting the stroke length and the number of oscillations of the pumping unit;
to exploit one of the productive strata, stopping the operation of another stratum, regardless of their formation pressure. Thus, it becomes possible to operate each layer with periodically changing the operating modes without the involvement of teams of fluid repair of wells;
- to operate the wells, complicated ARPD;
- to operate in wells with the products having a higher viscosity;
- change the settings of pumping without lifting the entire surface mounting.
Installation for dual operation of two reservoirs, including rod pump plunger, cylinder, suction and discharge valves, characterized in that the cylinder is provided with a lateral valve with filter, fixed on the cylinder of the auxiliary cylinder with the side hole and the casing to form between the auxiliary cylinder and the casing annular space, the lower end of the cylinder is plugged by a plug, the casing is secured a suction valve, a filter and a shank with a packer on the end, the plunger is made combined, consisting of United stock upper and lower plungers of valves by placing the top of the plunger within the cylinder and the bottom of the plunger inside the auxiliary cylinder the lower plunger and rod have a channel on the I's message space above and below the lower plunger, the upper plunger and rod have a channel for connecting the space below the upper plunger to the entrance of the upper valve plunger.
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: motors and pumps.
SUBSTANCE: method of oil-well gas application is intended for pumping unit driving in wells having low gas pressure in annular space but sufficient gas factor. Oil-well gas extracted from annular space and produced oil by separation method, is subject to pressurized drying, cleaning, accumulating and extraction of hydrogen. The produced hydrogen is supplied to fuel-cell battery where electric and thermal energy is produced as a result of oxidation-reduction involving atmospheric oxygen. Electric energy is supplied to pumping unit drive, while thermal energy as water steam is used for oil heating.
EFFECT: reduced oil production costs due to proper sources of electric energy.
2 cl, 1 dwg
FIELD: engines and pump, mining.
SUBSTANCE: hole screw pump with mouth drive consists of stator integrated with the tubing and rotor arranged there inside and coupled with the tail, crossover shoe interacting with the travel limiter and bore anchor. The tail of the listed equipment is furnished with a tip arranged to translate upward along the crossover show inner surface. The stator is rigidly coupled with the aforesaid tubing arranged to rotate the mouth drive. The aforesaid crossover shoe is rigidly and axially coupled with the hole anchor locked relative the hole walls. The aforesaid tail is arranged beneath the rotor and furnished, above the tip, with the travel limiter representing a stop. Note that the rotor is locked axially and radially relative to the stator. The proposed hole screw pump is designed to be used in minor-diameter holes for production of high-viscosity oil.
EFFECT: ease of production and lower production costs.
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.