CN212406997U

CN212406997U - Controllable solid valve low-fault tube type oil well pump

Info

Publication number: CN212406997U
Application number: CN202020484363.8U
Authority: CN
Inventors: 代国伟; 孙哲; 边莉; 贾玉辉; 李虎; 宋海涛; 曾拓; 张碧才; 于亮; 马军; 牛国英; 王汉满; 徐杰
Original assignee: Shengli Oilfield Luming Oil And Gas Exploration And Development Co ltd; China Petroleum and Chemical Corp
Current assignee: Shengli Oilfield Luming Oil And Gas Exploration And Development Co ltd; China Petroleum and Chemical Corp
Priority date: 2019-12-10
Filing date: 2020-04-03
Publication date: 2021-01-26
Anticipated expiration: 2030-04-03

Abstract

The utility model provides a controllable solid valve low fault tube oil-well pump, including the oil-well pump assembly, the oil-well pump assembly includes the pump barrel assembly and installs at the inside plunger assembly of pump barrel assembly, the standing valve assembly is connected to oil-well pump assembly lower extreme, the standing valve assembly includes solid valve shell, solid valve steel ball control assembly, standing valve steel ball, disk seat, valve bonnet all set up inside the standing valve shell, the standing valve steel ball is located on disk seat, inside the disk seat upper end stretched into the valve bonnet, the solid valve steel ball control assembly was connected to the valve bonnet upper end, the plunger assembly is connected to solid valve steel ball control assembly upper end. The utility model discloses delay the pipe pole eccentric wear, prevent trouble such as plunger card hinders to and the condition such as junk breaks down in the miscellaneous, scale deposit, sand production, the pump of machine can effectively clear away to need not to install the bleeder specially in the pit.

Description

Controllable solid valve low-fault tube type oil well pump

Technical Field

The utility model belongs to the technical field of the oil-well pump technique in the pit of oil field oil well beam-pumping unit oil recovery, especially a controllable solid valve low fault tube-type oil-well pump.

Background

At present, the oil well of the oil field widely uses the tubing pump to recover oil, generally comprising a fixed valve, a long pump barrel, a short plunger piston and a traveling valve pair. Because the underground working environment of the oil well pump is complex, and faults such as plunger blockage, loss of a fixed valve pair, breakage of a traveling valve cover, air lock, aggravation of pipe rod eccentric wear and the like easily occur under the conditions of gas influence, mechanical impurity deposition, scaling, sand production and the like, the period of the oil well pump inspection is shortened, the maintenance workload of the pump inspection is increased, and the production management difficulty and the production cost are increased.

Application No.: 201820075719.5 relates to an airlock-proof oil pump, a gas-liquid separator and an oil extraction device. The airlock-proof oil well pump comprises a pump barrel, an oil well pump plunger and a fixed valve, wherein the oil well pump plunger and the fixed valve are positioned in the pump barrel, the lower end of the fixed valve is connected with a gas-liquid separator, the gas-liquid separator comprises a liquid inlet barrel communicated with a valve hole of the fixed valve through an upper end opening, at least one flow deflector with an upper opening is arranged on the periphery of the liquid inlet barrel, a containing cavity is formed by the flow deflector and the outer barrel wall of the liquid inlet barrel in a surrounding mode, a liquid inlet hole is formed in the containing cavity in the barrel wall of the liquid inlet barrel, oil bypasses the flow deflector from the liquid inlet barrel to enter the containing cavity and enter the liquid inlet barrel through the liquid. Can realize the effective separation of oil gas, fluid can carry out the liquid seal to the feed liquor hole in the chamber that holds of water conservancy diversion piece, prevents that gas from flowing into feed liquor bucket inner chamber along the feed liquor hole, can realize gaseous discharge in advance in the fluid through simple structure, prevents that gas from getting into the pump along with fluid in, and then leads to pump airlock and take out the problem that does not oil.

Application No.: 201420116370.7 an airlock-proof oil pump, the airlock-proof valve, the valve seat installed in the valve hood, the lower part of the valve hood connected with the upper part of the sealing device, the valve rod through the sealing device, the airlock seat, the valve, the lower part of the valve rod connected with the upper scraping sleeve, the upper valve seat installed in the lower part of the upper plunger, the upper connecting rod through the upper valve seat, the upper plunger upper part connected with the upper scraping sleeve lower part, the upper connecting rod lower connecting rod through the lower valve seat, the lower plunger upper part connected with the lower scraping sleeve lower part, the lower connecting rod lower mechanical valve installed in the lower part of the lower connecting rod, the sealing cylinder, the pump cylinder, the oil inlet valve connected in sequence, the sealing device pressed into the sealing cylinder, the upper scraping sleeve, the upper plunger, the lower scraping sleeve, the lower plunger, in the pump cylinder, the upper plunger, the lower plunger and the pump cylinder sealing, the mechanical valve can automatically leave the valve seat, oil gas can be discharged, and the oil well pump cannot be air-locked.

Application No.: 201020154878.8 provides an anti-sticking hinders oil-well pump, belongs to an oil field production and uses the device, and it has the pump barrel, has the plunger in the pump barrel, the upper end of plunger be fixed with hollow pull rod, move about island valve body lower extreme and hollow pull rod's upper end together fixed, the upper end has the top connection, install the valve ball above the disk seat at middle part, the lower extreme of pump barrel installs the deposit section of thick bamboo top connection through the pump barrel lower clutch, install the deposit section of thick bamboo urceolus below the deposit section of thick bamboo top connection, deposit section of thick bamboo lower clutch is installed to deposit section of thick bamboo urceolus lower extreme, the chinampa valve body is installed to the upper end of deposit section of thick bamboo inner tube, there is another through-hole on the chinampa. The oil well pump has good use effect, improves the liquid discharge capacity, improves the strength and reduces the occurrence of fracture accidents; the valve failure caused by the deposition of solid matter on the valve seat can be prevented.

Application No.: 201420601824.X an oil-well pump falling object preventing protector, which comprises an upper joint, an outer sleeve, a shuttle-shaped valve, an inner pipe, a storage cavity, a flushing screw, a lower joint, a shuttle-shaped valve inner pipe, a clamping groove and an oil rod; the inner pipe is arranged on the lower joint; the lower part of the outer sleeve is connected with the lower joint; the upper part of the outer sleeve is connected with the upper joint; the outer sleeve, the lower joint and the inner pipe form a storage cavity; the shuttle-shaped valve is in a two-petal shape and is sleeved on the oil rod by a clamping groove, the shuttle-shaped valve can slide on the oil rod, and the contact surface of the shuttle-shaped valve and the oil rod is a shuttle-shaped valve inner tube. The utility model discloses can effectively prevent falling objects such as wax, dirt, sand that drop in the oil pipe, prevent the emergence that the oil-well pump card hinders, play the guard action that the falling object was prevented to the oil-well pump.

Application No.: 200810000912.3 relates to a positive flushing oil pump, which is used in oil extraction industry and has the advantages of sand control, gas prevention, wax prevention and high pump efficiency. The utility model discloses in, be equipped with sand control groove on the upper and lower plunger, can send the grit of deposit in sand control groove into the pump down, play the sand control effect. When the plunger falls to the position of the pump, the oil pipes on the pump and under the pump are communicated through the pump cavity, and the well washing function is realized. The utility model discloses in, the inlet valve is opened easily under the hydraulic pressure feedback effect, has increased and has been full of the coefficient, has reduced the bending of sucker rod, has increased the effective stroke of pump, has prevented the airlock, has reduced the fatigue loss of sucker rod, therefore has the function and the characteristics of the high-efficient pump of gas defense.

Application No.: 201420064385.3A wax-blocking prevention oil pump relates to the field of liquid variable-volume machinery. The pump of the utility model is also provided with a bolt plate in the inner cavity of the middle cylinder of the pump, the bolt plate is positioned between the lower traveling valve and the fixed valve, the bolt plate is provided with an oil passage which passes through the bolt plate up and down, the lower end of the bolt plate is provided with a hollow cavity, and the area of the cross section of the hollow cavity is larger than or equal to the area of the cross section of the fixed valve ball; in addition, a spring is further arranged on a valve seat of the fixed valve, an annular wax scraping block is further arranged between the spring and the plug pin plate, the outer diameter of the wax scraping block is the same as the inner diameter of a valve cavity of the fixed valve, and the inner diameter of the wax scraping block is the same as the diameter of the cross section of a hollow cavity at the lower end of the plug pin plate. The wax block scraping mode is arranged on the outer wall of the fixed valve seat fixed pipe of the lower traveling valve and the inner wall of the pump middle cylinder of the oil well pump, so that the purpose of cleaning wax while completing oil pumping operation of the oil well pump is achieved, the improvement process is simple, the realization is easy, and the wax blocking and pump blocking phenomena caused by wax deposition inside the oil well pump are effectively reduced.

Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a controllable solid valve hangs down trouble tubular oil-well pump delays the pipe pole eccentric wear, prevents trouble such as plunger card and hinders to and the condition such as junk breaks down in the miscellaneous, scale deposit, sand production, the pump of machine can effectively clear away to need not to install the bleeder specially in the pit.

The purpose of the utility model can be realized by the following technical measures:

the controllable solid valve low-fault tube type oil well pump comprises an oil well pump assembly, wherein the oil well pump assembly comprises a pump barrel assembly and a plunger assembly arranged inside the pump barrel assembly, the lower end of the oil well pump assembly is connected with a fixed valve assembly, the fixed valve assembly comprises a fixed valve shell, a solid valve steel ball control assembly, a fixed valve steel ball, a fixed valve seat and a valve cover, the solid valve steel ball control assembly, the fixed valve steel ball, the fixed valve seat and the valve cover are all arranged inside the fixed valve shell, the fixed valve steel ball is located on the fixed valve seat, the upper end of the fixed valve seat extends into the valve cover, the upper end of the valve cover is connected with the solid valve steel ball control assembly, and the upper end of the solid valve steel ball control assembly is connected with the plunger assembly.

further, the fixed valve shell comprises a fixed valve cabin, a reversing spring frame and a controller cabin which are sequentially connected from bottom to top, the lower end of the fixed valve cabin is connected with a lower connector, and the upper end of the controller cabin is connected with the pump barrel assembly through a fixed valve upper connector.

Further, the valve fixing steel ball control assembly comprises a torque rod, a buffer mechanism, a guide rod, a rail pin and a control shifting fork, wherein the rail pin is fixed on the guide rod and runs in a reversing rail arranged on the inner wall of the reversing spring frame, the lower end of the guide rod is connected with the buffer mechanism, the upper end of the torque rod is connected with the buffer mechanism, the lower end of the torque rod is connected with the valve cover, the upper end of the guide rod is connected with the control shifting fork, and the upper end of the control shifting fork is connected with the plunger assembly.

Furthermore, the valve fixing steel ball control assembly further comprises a spring, the spring is sleeved outside the guide rod, the upper end of the spring abuts against a limiting table arranged on the inner wall of the control shifting fork, and the lower end of the spring is connected with a reversing spring frame.

Further, buffer gear includes reset spring seat, buffer spring cang gai, buffer spring, buffering spring storehouse, buffer spring storehouse upper end connecting rod lower extreme, inside buffer spring storehouse was arranged in to buffer spring, buffer spring overlaps on reset spring seat to the buffer spring lower extreme top was on the spacing platform that reset spring seat outer wall was seted up, and the buffer spring upper end top is at buffering spring storehouse inner chamber roof, buffer spring cang gai connects and is spacing to reset spring seat axial at the lower port buffer spring cang gai lower port inner wall in buffering spring storehouse, the torque rod is connected to reset spring seat lower extreme.

Further, the lower end of the fixed valve seat is connected with a guide pipe through a guide pipe coupling, and the lower end of the guide pipe is connected with a lower joint.

Further, pump barrel assembly includes extension nipple joint, middle part coupling, pump barrel, the upper joint of pump barrel that connects gradually from bottom to top.

Furthermore, the plunger assembly comprises a shifting fork valve seat, a moving valve cover, a plunger and a plunger upper joint which are sequentially connected from bottom to top, and a shifting fork valve steel ball is located on the shifting fork valve seat.

Compared with the prior art, the utility model following beneficial technological effect has:

crude oil lifting: according to the production requirement of an oil well, the controllable solid valve low-fault pipe type oil well pump is connected to the lower end of a production pipe column and is put into the well; the upper joint of the plunger is connected with the lower end of the sucker rod string and provided with a plunger assembly to be put into the pump, the plunger is lifted up to prevent the impact distance and driven by a ground pumping unit, the plunger moves upwards, the traveling valve pair is closed, the fluid in the oil pipe string is discharged out of the ground, meanwhile, the fixed valve pair is opened, and the fluid in the shaft enters the pump barrel under the action of pressure difference; the plunger assembly moves downwards along with the sucker rod string, the traveling valve pair is opened, fluid in the pump is replaced above the traveling valve pair, and meanwhile, the fixed valve pair is closed to prepare for ascending liquid drainage.

Air lock prevention: the plunger adopts the thick wall material, adopts single traveling valve pair structure, through the volume occupy-place, dwindles the gas compression space, forces to reduce gaseous occupy-place, realizes alleviateing the technical purpose of airlock trouble.

Preventing the plunger from being blocked: the combined process of the long plunger assembly and the short pump barrel is favorable for ensuring the processing quality of a plating layer in the pump barrel and the plunger, and simultaneously, impurities in the annular gap of the plunger and the pump barrel are automatically carried in the upward and downward processes of the plunger, so that the stroke wedge-shaped deposition of sand scale and the like in the annular gap is prevented, and the blocking faults of the plunger and the pump barrel are prevented.

Standing valve fault prevention: a mechanical impurity deposition space is formed by the lower connector, the guide pipe, the fixed valve bin, the guide pipe coupling, the fixed valve seat, the steel ball and the valve cover together, and the sealing function failure caused by the fact that mechanical impurities falling into the pump cylinder directly enter the fixed valve pair is prevented.

Fixed valve fault handling and drip: when the sealing failure of the fixed valve pair occurs, the sucker rod column is lowered to connect a shifting fork valve seat at the lower part of the plunger assembly with the control shifting fork, the sucker rod column rotates forwards by 180 degrees, the fixed valve steel ball control assembly consisting of the torque rod, the reset spring seat, the buffering spring bin cover, the buffering spring bin, the guide rod, the rail pin, the reversing spring frame, the controller bin, the spring and the control shifting fork realizes positioning and reversing, and the sucker rod column is lifted to enable the plunger assembly to be arranged in the oil pipe above the pump barrel. Under the action of spring force, the steel ball, the valve cover, the torque rod, the reset spring seat, the buffer spring bin cover, the buffer spring bin, the guide rod, the rail pin, the reversing spring frame, the controller bin, the spring and the control shifting fork are driven to move upwards, the step arranged in the valve cover drives the steel ball to leave the fixed valve seat, and therefore forward well washing of the tubular oil well pump can be achieved, faults such as mechanical impurities, scaling and the like in a deposition cavity of the fixed valve are eliminated under the action of hydraulic impact, and the auxiliary function of the fixed valve is recovered. When the well is repaired, the oil drainage operation of the pipe column is realized through corresponding operation, so that pollution is prevented. The fixed valve pair can be closed by reverse operation, and the production of the oil well pump can be recovered.

Cleaning wax and scale of a well by normal washing: the pumping rod column is lowered to connect the shifting fork valve seat at the lower part of the plunger assembly with the control shifting fork, the pumping rod column rotates forwards by 180 degrees, the valve fixing steel ball control assembly consisting of the torque rod, the reset spring seat, the buffer spring bin cover, the buffer spring bin, the guide rod, the rail pin, the reversing spring frame, the controller bin, the spring and the control shifting fork realizes positioning and reversing, and the pumping rod column is lifted to enable the plunger assembly to be arranged in the oil pipe above the pump barrel. Under the action of spring force, the valve cover, the torque rod, the reset spring seat, the buffer spring bin cover, the buffer spring bin, the guide rod, the rail pin, the reversing spring frame, the controller bin, the spring and the control shifting fork are driven to move upwards, and the step arranged in the valve cover drives the steel ball to leave the fixed valve seat, so that the steam injection construction of the oil pipe of the tubular oil well pump can be realized. After the steam injection is finished, the fixed valve pair can be closed by reverse operation, and the production of the oil well pump is recovered.

The utility model discloses satisfy under the normal oil recovery function condition of conventional tubular oil-well pump, mainly solve the airlock, move about the valve bonnet fracture, delay multiple trouble such as pipe pole eccentric wear to and because of go out sand, scale deposit, machine miscellaneous deposit, when the junk breaks down in the pump, accessible plunger assembly, steel ball controller assembly are implemented the trouble and are effectively clear away, realize just washing well wax removal scale removal etc. operation, thereby prolong the oil well and examine the pump cycle.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a partially enlarged view of fig. 1.

In the figure: a lower joint of G1, a guide pipe of G2, a fixed valve cabin of G3, a guide pipe coupling of G4, a fixed valve seat of G5, a steel ball of G6, a valve cover of G7, a torque rod of G8, a return spring seat of G9, a buffer spring cabin cover of G10, a buffer spring of G11, a buffer spring cabin of G12, a guide rod of G13, a track pin of G14, a reversing spring frame of G15, a controller cabin of G16, a spring of G17, a control fork of G18 and an upper joint of the fixed valve of G19;

b1 lengthening short piece, B2 middle coupling, B3 pump cylinder and B4 pump cylinder upper joint;

the device comprises a Z1 shifting fork valve seat, a Z2 steel ball, a Z3 floating valve cover, a Z4 plunger and a Z5 plunger upper joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1 to 2, the present invention provides a technical solution:

the controllable solid valve low-fault tube type oil well pump comprises an oil well pump assembly, wherein the oil well pump assembly comprises a pump barrel assembly B and a plunger assembly Z arranged inside the pump barrel assembly, the lower end of the oil well pump assembly is connected with a fixed valve assembly G, the fixed valve assembly comprises a fixed valve shell, a solid valve steel ball control assembly, a fixed valve steel ball G6, a fixed valve seat G5 and a valve cover G7, the solid valve steel ball control assembly, the fixed valve steel ball, the fixed valve seat and the valve cover are all arranged inside the fixed valve shell, the fixed valve steel ball is located on the fixed valve seat, the upper end of the fixed valve seat extends into the valve cover, the upper end of the valve cover is connected with the solid valve steel ball control assembly, and the upper end of the solid valve steel ball control assembly is connected with the plunger assembly.

The fixed valve shell comprises a fixed valve cabin G3, a reversing spring frame G15 and a controller cabin G16 which are sequentially connected from bottom to top, the lower end of the fixed valve cabin is connected with a lower connector G1, and the upper end of the controller cabin is connected with a pump barrel assembly through a fixed valve upper connector G19.

Valve steel ball control assembly admittedly includes torque rod G8, buffer gear, guide arm G13, track pin G14, spring G17, control shift fork G18, the track pin is fixed on the guide arm, and the track pin operation is in the switching-over track that switching-over spring frame inner wall was seted up, buffer gear is connected to the guide arm lower extreme, buffer gear is connected to the torque rod upper end, and the valve bonnet is connected to the lower extreme, and the control shift fork is connected to the guide arm upper end, and control shift fork upper end is plugged into with the plunger assembly, the spring suit is outside at the guide arm, and the spring upper end top is on the spacing platform that control shift fork inner wall was seted up, and the switching-over spring frame is.

Buffer gear includes reset spring seat G9, buffer spring storehouse lid G10, buffer spring G11, buffer spring storehouse G12, the guide arm lower extreme is connected to buffer spring storehouse upper end, inside buffer spring storehouse was arranged in, buffer spring overlaps on reset spring seat to the buffer spring lower extreme top is on the spacing platform that reset spring seat outer wall was seted up, and the buffer spring upper end top is at buffer spring storehouse inner chamber roof, the lower port buffer spring storehouse lid of buffer spring storehouse is connected the lower port buffer spring storehouse lid inner wall and is spacing to reset spring seat axial, reset spring seat lower extreme connection torque rod.

The lower end of the fixed valve seat is connected with a guide pipe G2 through a guide pipe coupling G4, and the lower end of the guide pipe is connected with a lower connector.

The pump barrel assembly comprises a long section B1, a short section B2, a pump barrel B3 and a pump barrel upper joint B4 which are sequentially connected from bottom to top.

The plunger assembly comprises a shifting fork valve seat Z1, a traveling valve cover Z3, a plunger Z4 and a plunger upper joint Z5 which are sequentially connected from bottom to top, and a shifting fork valve steel ball Z2 is located on the shifting fork valve seat.

The fixed valve assembly G is formed by assembling a lower joint G1, a guide pipe G2, a fixed valve cabin G3, a guide pipe coupling G4, a fixed valve seat G5, a steel ball G6, a valve cover G7, a torque rod G8, a return spring seat G9, a buffer spring cabin cover G10, a buffer spring G11, a buffer spring cabin G12, a guide rod G13, a track pin G14, a reversing spring frame G15, a controller cabin G16, a spring G17, a control shifting fork G18, a fixed valve upper joint G19 and the like. The fixed valve assembly G is connected to the lower part of the pump barrel assembly B through threads.

The fixed valve steel ball control assembly formed by a torque rod G8, a return spring seat G9, a buffer spring cabin cover G10, a buffer spring G11, a buffer spring cabin G12, a guide rod G13, a rail pin G14, a reversing spring rack G15, a controller cabin G16, a spring G17 and a control shifting fork G18 is arranged in the fixed valve assembly G.

And a pump barrel assembly B consisting of a lengthened pup joint B1, a middle coupling B2, a pump barrel B3 and a pump barrel upper joint B4, wherein an oil pipe thread is arranged in the pump barrel upper joint B4 and is connected with an oil pipe.

And a plunger assembly Z consisting of a shifting fork valve seat Z1, a steel ball Z2, a floating valve cover Z3, a plunger Z4, a plunger upper joint Z5 and the like is arranged in a space formed by a fixed valve assembly G and a pump cylinder assembly B.

Crude oil lifting: according to the production requirement of an oil well, the controllable solid valve low-fault pipe type oil well pump is connected to the lower end of a production pipe column and is put into the well; the upper joint of the Z5 plunger is connected with the lower belt plunger assembly of the sucker rod column and is put into the pump, the lifting impact distance is lifted, the plunger is driven by the ground pumping unit, the traveling valve pair is closed, the fluid in the oil pipe column is discharged out of the ground, meanwhile, the fixed valve pair is opened, and the fluid in the shaft enters the pump barrel under the action of pressure difference; the plunger assembly Z moves downwards along with the sucker rod string, the traveling valve pair is opened, fluid in the pump is replaced above the traveling valve pair, and meanwhile, the fixed valve pair is closed to prepare for upward liquid drainage.

Standing valve fault prevention: a mechanical impurity deposition space is formed by the lower connector G1, the guide pipe G2, the fixed valve cabin G3, the guide pipe coupling G4, the fixed valve seat G5, the steel ball G6 and the valve cover G7, and the mechanical impurities falling into the pump cylinder are prevented from directly entering the fixed valve pair to cause the failure of the sealing function.

Fixed valve fault handling and drip: when sealing failure of a fixed valve pair occurs, a sucker rod column is lowered down, a shifting fork valve seat Z1 at the lower part of a plunger assembly Z is connected with a control shifting fork G18, the sucker rod column rotates forwards 180 degrees, a fixed valve steel ball control assembly consisting of a torque rod G8, a return spring seat G9, a buffer spring cabin cover G10, a buffer spring G11, a buffer spring cabin G12, a guide rod G13, a track pin G14, a reversing spring frame G15, a controller cabin G16, a spring G17 and a control shifting fork G18 realizes positioning and reversing, the track pin G14 runs in a reversing track arranged on the inner wall of the reversing spring frame G15, and the technology for realizing reversing by mutual rotation of the track pin G14 and the reversing track spring frame G15 belongs to. The lifting rod column moves the plunger assembly Z into the oil tube above the pump barrel. Under the action of spring force of a spring G17, a steel ball G6, a valve cover G7, a torque rod G8, a return spring seat G9, a buffer spring bin cover G10, a buffer spring G11, a buffer spring bin G12 guide rod, a G13, a rail pin G14, a reversing spring frame G15, a controller bin G16, a spring G17 and a control shifting fork G18 are driven to ascend, a step is arranged in the valve cover G7 to drive the steel ball G6 to leave a fixed valve seat G5, forward well washing of the tubular oil pump can be achieved, faults such as mechanical impurities, scaling and the like in a settling cavity of the fixed valve are cleared under the action of hydraulic impact, and the function of the fixed valve pair is recovered. When the well is repaired, the oil drainage operation of the pipe column is realized through corresponding operation, so that pollution is prevented. The fixed valve pair can be closed by reverse operation, and the production of the oil well pump can be recovered.

Cleaning wax and scale of a well by normal washing: lowering the sucker rod column, connecting a shifting fork valve seat Z1 at the lower part of a plunger assembly Z with a control shifting fork G18, rotating the rod column forward by 180 degrees, positioning and reversing a valve fixing steel ball control assembly consisting of a torque rod G8, a reset spring seat G9, a buffer spring bin cover G10, a buffer spring G11, a buffer spring bin G12, a guide rod G13, a track pin G14, a reversing spring frame G15, a controller bin G16, a spring G17 and the control shifting fork G18, and lifting the rod column to enable the plunger assembly Z to be positioned in the oil pipe above the pump cylinder. Under the action of spring force of a spring G17, a steel ball G6, a valve cover G7, a torque rod G8, a return spring seat G9, a buffer spring cabin cover G10, a buffer spring G11, a buffer spring cabin G12, a guide rod G13, a rail pin G14, a reversing spring frame G15, a controller cabin G16, a spring G17 and a control shifting fork G18 are driven to move upwards, a step is arranged in the valve cover G7 to drive the steel ball G6 to leave a fixed valve seat G5, and therefore steam injection construction of an oil pipe of the tubular oil well pump can be achieved. After the steam injection is finished, the fixed valve pair can be closed by reverse operation, and the production of the oil well pump is recovered.

Example 2:

referring to fig. 1 to 2, the present invention provides a technical solution:

Example 3:

referring to fig. 1 to 2, the present invention provides a technical solution:

Example 4:

referring to fig. 1 to 2, the present invention provides a technical solution:

Example 5:

referring to fig. 1 to 2, the present invention provides a technical solution:

Although fig. 1 to 2 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown as long as the parts or structural features missing in the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the invention can also be achieved, so all of them are within the protection scope of the present invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a controllable solid valve low fault tube type oil-well pump, includes the oil-well pump assembly, the oil-well pump assembly includes pump barrel assembly and installs the plunger assembly in the inside of pump barrel assembly, its characterized in that, fixed valve assembly is connected to oil-well pump assembly lower extreme, fixed valve assembly includes solid valve shell, solid valve steel ball control assembly, solid valve steel ball, solid valve seat, valve bonnet all set up inside the fixed valve shell, the solid valve steel ball is located on the fixed valve seat, the fixed valve seat upper end stretches into inside the valve bonnet, and the solid valve steel ball control assembly is connected to the valve bonnet upper end, solid valve steel ball control assembly upper end is connected the plunger assembly.

2. The controllable solid valve low-fault tube type oil well pump according to claim 1, wherein the fixed valve housing comprises a fixed valve bin, a reversing spring frame and a controller bin which are sequentially connected from bottom to top, the lower end of the fixed valve bin is connected with a lower joint, and the upper end of the controller bin is connected with a pump barrel assembly through a fixed valve upper joint.

3. The controllable solid valve low-fault pipe type oil well pump according to claim 2, wherein the solid valve steel ball control assembly comprises a torque rod, a buffer mechanism, a guide rod, a rail pin and a control shifting fork, the rail pin is fixed on the guide rod and runs in a reversing rail arranged on the inner wall of the reversing spring frame, the lower end of the guide rod is connected with the buffer mechanism, the upper end of the torque rod is connected with the buffer mechanism, the lower end of the torque rod is connected with the valve cover, the upper end of the guide rod is connected with the control shifting fork, and the upper end of the control shifting fork is connected with the plunger assembly.

4. The controllable solid valve low-fault tube type oil well pump according to claim 3, wherein the solid valve steel ball control assembly further comprises a spring, the spring is sleeved outside the guide rod, the upper end of the spring abuts against a limiting table arranged on the inner wall of the control shifting fork, and the lower end of the spring is connected with a reversing spring frame.

5. The controllable solid valve low-fault tube type oil well pump according to claim 3, wherein the buffer mechanism comprises a return spring seat, a buffer spring bin cover, a buffer spring and a buffer spring bin, the upper end of the buffer spring bin is connected with the lower end of the guide rod, the buffer spring is arranged in the buffer spring bin, the buffer spring is sleeved on the return spring seat, the lower end of the buffer spring abuts against a limit table arranged on the outer wall of the return spring seat, the upper end of the buffer spring abuts against the top wall of the inner cavity of the buffer spring bin, the buffer spring bin cover is connected to the inner wall of the lower port of the buffer spring bin cover at the lower port of the buffer spring bin to limit the axial direction of the return spring seat, and the lower end of the return spring seat is connected with.

6. The controllable solid valve low-fault pipe type oil well pump as claimed in claim 2, 3 or 5, wherein the lower end of the fixed valve seat is connected with a guide pipe through a guide pipe coupling, and the lower end of the guide pipe is connected with a lower joint.

7. The controllable solid valve low-fault pipe type oil well pump according to claim 2, 3 or 5, wherein the pump cylinder assembly comprises an elongated short section, a middle coupling, a pump cylinder and a pump cylinder upper joint which are sequentially connected from bottom to top.

8. The controllable solid valve low-fault tube type oil well pump according to claim 7, wherein the plunger assembly comprises a shifting fork valve seat, a traveling valve cover, a plunger and a plunger upper joint which are sequentially connected from bottom to top, and a shifting fork valve steel ball is located on the shifting fork valve seat.