CN210799331U - Universal impact open type closed controller on oil well pump - Google Patents
Universal impact open type closed controller on oil well pump Download PDFInfo
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- CN210799331U CN210799331U CN201921718710.2U CN201921718710U CN210799331U CN 210799331 U CN210799331 U CN 210799331U CN 201921718710 U CN201921718710 U CN 201921718710U CN 210799331 U CN210799331 U CN 210799331U
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- fixed valve
- shearing
- cuting
- solid fixed
- thick bamboo
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Abstract
The utility model discloses a general type striking open-type closed control ware on oil-well pump, its characterized in that: including from last adapter sleeve, the lower section of thick bamboo of cuting, the solid fixed valve casing that connects gradually extremely down, the adapter sleeve upper end is used for being connected with the pump barrel, and the solid fixed valve casing lower extreme is used for tail pipe connection under the pump, is connected with the solid fixed valve cover on the solid fixed valve casing, the upper end of the lower section of thick bamboo of cuting stretches into in the adapter sleeve to through can cuting stop gear and connect the upper section of thick bamboo of cuting, can cuting and be connected with the elasticity depression bar on stop gear's the shear nail seat, under the initial condition, the lower extreme of elasticity depression bar stretches into the solid fixed valve intracavity and compresses tightly the lower extreme. The utility model discloses do not increase other processes and equipment, have that the operation accounts for well time weak point, easy operation is convenient, the working costs is low, sealed and open the dependable performance to and install the characteristics that use the commonality is strong on the pumping string.
Description
Technical Field
The utility model relates to a general type striking open-type closed control ware on oil-well pump.
Background
The fixed valve on the oil pumping pipe column (the structure of which is shown in figure 1 for short) of the oil pumping pump adopts a check valve with a structural form that a valve ball is opened upwards and closed downwards, namely, well fluid can flow into the pump upwards through the fixed valve under the action of the pressure difference between the upper part and the lower part of the fixed valve (the inside and the outside of the pump), but can not flow out of the fixed valve after being stopped downwards. Firstly, when the pressure at the bottom of the well is high, the well fluid upwells to jack the standing valve of the oil well pump, so that the oil pipe at the well head bursts and the pumping string is difficult to pull down, and other equipment with pressure needs to be used, so that the well occupying time is long, the well site bursts and spouts, the labor intensity is increased, and the well repairing operation cost is increased. Secondly, along with the continuous deepening of the development of each oil field, the problems of sand production, scaling and the like generally occur in the oil well, and along with the reduction of the formation pressure, the effect of effectively cleaning the shaft cannot be achieved due to the problems that even a large number of oil wells use external working fluid to wash sand and wash the well, the sand and the scale are difficult to effectively flowback and the like. Therefore, in the process of descending the pumping pipe column, because the pipe column has downward movement speed relative to the well liquid, the conventional fixed valve can be opened upwards to overflow, and impurity dirt such as sand grains, dirt skins and the like suspended in the well liquid in the shaft can easily return to the fixed valve along with the well liquid. When the foreign particles are adhered to the surface of the valve ball or the valve seat, the sealing failure of the fixed valve of the oil well pump before pumping can be caused, and the oil well pump needs to be cleaned or replaced by taking out the pipe column again, so that the well occupying time of operation is prolonged, and the well repairing cost of operation is increased.
The utility model discloses a patent name is oil-well pump blanking plug, patent number 201620692343, has introduced this technical field about solving a solution of above-mentioned problem. The piston device with the ejector rod is arranged at the lower part of the oil well pump fixed valve to completely seal the fixed valve in advance, so that the functions of preventing the pipe column from spraying and preventing impurities from returning to the pump are achieved. This technique is used in the field with a certain effect, but there are three main problems: the hydraulic device is characterized in that after a pipe column is put in place, the oil pipe is filled with water before the sucker rod column is put down, then pressurization equipment (hydraulic power car) is used for carrying out closed pressurization on the oil pipe at a well mouth, when the net pressure generated by subtracting casing pressure (the sinking pressure of the annular liquid surface of a shaft oil casing to a fixed valve) from oil pressure reaches the shearing pressure value of a shearing pin on a piston of the blanking plug, the piston is driven off together with a mandril, and at the moment, the fixed valve ball is seated to start normal work. Obviously, the construction cost is high because a water tank truck and a hydraulic power vehicle are additionally used in addition to the traditional operation equipment to be matched with the technology. Secondly, because the sinking pressure of the annular fluid surface of the oil sleeve to the fixed valve is difficult to effectively measure, namely the sleeve pressure value is uncertain, and the shearing pressure of the blanking plug is a fixed value, the oil pressure value applied to a wellhead by a hydraulic power vehicle is uncertain, a wellhead operator is difficult to judge whether the blanking plug is smoothly knocked down underground, and the procedure is repeatedly changed after the oil pumping rod column is put down to try to extract liquid to finally judge, so that the construction process is complex and the well occupying time is long. And thirdly, in order to be completely sealed with a piston cylinder, a rubber ring is required to be used for the outer circle of the piston of the blanking plug, the pump descending depths of all oil wells are different, the bottom hole temperatures are also different, the influence of the well temperatures on the rubber sealing ring is large, the rubber sealing ring is easy to pierce, the piston sealing fails, and the blanking plug cannot meet the use requirement, so that the blanking plug is taken out for rework operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the not enough of existence to above-mentioned prior art provides an easy operation convenience, seal general type striking open-type closed control ware on the oil-well pump that the jam performance is more reliable.
The utility model discloses the technical scheme who adopts does: the utility model provides a general type striking open-type closed control ware on oil-well pump which characterized in that: include from last adapter sleeve, the lower section of thick bamboo of cuting, the solid fixed valve casing that connects gradually extremely down, the adapter sleeve upper end is used for being connected with the pump barrel, and the solid fixed valve casing lower extreme is used for being connected with tail pipe under the pump, the upper end of the lower section of thick bamboo of cuting stretches into in the adapter sleeve to through can cuting stop gear and connect the section of thick bamboo of cuting, can cuting stop gear's the last elasticity depression bar that is connected with of shear nail seat, under the initial condition, the lower extreme of elasticity depression bar stretches into the solid fixed valve intracavity and compresses tightly the solid fixed valve ball.
According to the technical scheme, can cut stop gear and include the shear pin seat that sets up in the shearing section of thick bamboo under, be equipped with the shearing pin that radially stretches out on the shear pin seat, it is equipped with the axial spout to correspond the shearing pin on the shearing section of thick bamboo down, the shearing pin is worn out the axial spout and is corresponding to penetrate the locating part that sets up on the rethread adapter sleeve inner wall behind the cotter hole of shearing section of thick bamboo spacing.
According to the technical scheme, the limiting part is an inner step arranged on the inner wall of the connecting sleeve.
According to the technical scheme, the shear pin seat is at least 3 groups of support seats uniformly distributed on the circumference, a hollow structure is formed between every two adjacent branch mechanisms, an upper channel of each branch mechanism is communicated with a lower channel, and each group of branch mechanisms is connected with a shear pin.
According to the technical scheme, the elastic pressing rod comprises a pressing rod fixedly connected with the shear pin seat through threads, a pressing rod spring is sleeved on the pressing rod, two ends of the pressing rod spring are respectively abutted to the shear pin seat and the lower shearing barrel, and the lower end of the pressing rod is abutted to the fixed valve ball.
According to the technical scheme, the center of the fixed valve cover is provided with a center hole used for being connected with the elastic pressure rod, and the fixed valve cover is provided with an upper end valve port communicated with the valve cavity.
According to the technical scheme, the upper end of the upper shearing barrel is provided with an opening, and the side wall of the upper shearing barrel is provided with an opening.
The utility model discloses the beneficial effect who gains does: the utility model solves the problems of blowout prevention of the pumping column and upward return of shaft impurities into the pump, simultaneously avoids the technical defects of the hydraulic pump lower blanking plug in the patent, belongs to a pure mechanical operating device, does not need external hydraulic pressure control, has simple and convenient operation and more reliable sealing and blocking performance; the utility model discloses do not increase other processes and equipment, have that the operation accounts for well time weak point, easy operation is convenient, the working costs is low, sealed and open the dependable performance to and install the characteristics that use the commonality is strong on the pumping string.
Drawings
Fig. 1 is a schematic structural diagram of a conventional oil well pump.
Fig. 2 is a schematic structural diagram (closed state) of the present invention.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B of fig. 2.
Fig. 5 is a cross-sectional view C-C of fig. 2.
Fig. 6 is a cross-sectional view taken along line D-D of fig. 2.
Fig. 7 is a schematic view of the impact open state of the general impact open type sealing controller on the oil well pump.
Fig. 8 is a schematic view of the impact closed state of the general impact open-type closing controller on the oil well pump.
Fig. 9 is a schematic perspective view of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 2-9, the embodiment provides a general impact open type closed controller for an oil well pump, which includes a connecting sleeve 2, a lower shearing cylinder 6, and a fixed valve housing 9 sequentially connected from top to bottom through threads, wherein the upper portion of the connecting sleeve 2 is connected with the pump cylinder in a standard buckle type, the lower portion of the fixed valve housing 9 is connected with a tail pipe (tubing string) below the pump in a standard buckle type, and the fixed valve housing 9 is connected with a fixed valve cover 8. The upper end of the lower shearing barrel 6 extends into the connecting sleeve 2 and is connected with the upper shearing barrel 1 through the shearable limiting mechanism, the shear nail seat of the shearable limiting mechanism is connected with an elastic pressure rod, and the lower end of the elastic pressure rod extends into the fixed valve cavity and presses the fixed valve ball 10 onto the fixed valve seat 11 in an initial state.
The oil well pump inspection operation process is that firstly, a tubing string with a pump barrel assembly (the bottom of which is provided with a fixed valve) is put in, then, the tubing string is put in the deep part of a pump, and then, a sucker rod string with a plunger assembly at the bottom is put in until a plunger is put in the pump barrel, and well head flushing completion is realized after well head anti-impact distance is adjusted by a pump bumping (the bottom of the plunger is controlled by proper force to collide the fixed valve at the well head). The principle of the utility model is that: before going down the well, the device utilizes pure mechanical force to press the fixed valve ball on the fixed valve seat completely to achieve the requirement of complete sealing of the valve pair, and then utilizes the pump bumping operation after the plunger is lowered to release the pressing force of the valve ball once, and the normal work of the fixed valve is recovered, as shown in figure 2. Obviously, the design principle completely utilizes the traditional pump detection operation process, does not increase other processes and equipment, and has the characteristics of short well occupation time, simple and convenient operation, low construction cost, reliable sealing and opening performance and strong universality in installation and use on a pumping pipe column.
As shown in fig. 2-5, the shearable limiting mechanism includes a shear pin seat 4 disposed in the lower shear cylinder 6, a shear pin 5 extending radially is disposed on the shear pin seat 4, an axial sliding groove is disposed on the lower shear cylinder 6 corresponding to the shear pin 5, and the shear pin 5 penetrates through the axial sliding groove and is limited by a limiting member disposed on the inner wall of the connecting sleeve after penetrating into the pin hole of the upper shear cylinder 1. Specifically, the locating part is an inner step arranged on the inner wall of the connecting sleeve.
The shear pin seat 4 is at least 3 groups of support seats, a hollow structure is formed between every two adjacent branch mechanisms, an upper channel of each branch mechanism is communicated with a lower channel, and each group of branch mechanisms is connected with a shear pin 5. This embodiment explains with setting up 3 shear pin 5 as the example, and of course shear pin 5 is not only limited to the circumference equipartition three, and is corresponding, and shear pin seat 4 is also not limited to the design for three branches (three shear pin mounting hole), as long as the design matches for total shearing force of all shear pins and plunger bumping pump impact, and the branch seat of shear pin seat 4 can satisfy sufficient discharge capacity that overflows simultaneously, all is promptly within the design principle right protection scope.
The elastic pressure rod comprises a pressure rod 3 connected with the shear pin seat through threads, a pressure rod spring 7 is sleeved on the pressure rod 3, two ends of the pressure rod spring 7 are respectively abutted against the shear pin seat 4 and an inner blocking shoulder on the lower shearing barrel, and the lower end of the pressure rod 3 is abutted against the fixed valve ball 10 after passing through the fixed valve cover 8.
As shown in fig. 5 and 6, a center hole for connecting with the elastic pressure rod is arranged in the center of the fixed valve cover 8, and an upper end valve port communicated with the valve cavity is arranged on the fixed valve cover.
In this embodiment, the shearing pin 5, the upper shearing cylinder 1, the shearing pin seat 4, and the lower shearing cylinder 6 are sleeved together (without screw threads) in a hole-positioning manner, the upper shearing cylinder 1 is coaxially sleeved on the lower shearing cylinder 6, the shearing pin 5 can be sheared by descending along the lower shearing cylinder 6, and the pressing rod 3 is a screw rod with a full-thread structure on the outer surface and is coaxially and threadedly connected with the shearing pin seat 4.
The utility model discloses a under original sealed operating condition, three shear pin 5 is spacing by the circular bead terminal surface of adapter sleeve 2 lower part, simultaneously through shear pin seat 4 with depression bar spring 7 compression, then through the screw-thread fit between depression bar 3 and the shear pin seat 4, rotation regulation depression bar 3, make its tight standing valve ball 10 in top, reach and compress tightly standing valve ball 10 on the sealed face of standing valve seat 11, realize totally enclosed control state (figure 2, figure 8, figure 9), for locking this moment, also can install a screw back cap additional at depression bar 3 top, make it and shear pin seat 4 and tight.
After the sucker rod string is completed, the wellhead controls to enable the plunger to touch the pump with proper force, the bottom of the plunger impacts the upper end face of the upper shearing barrel 1, the impact force of the weight of the plunger and the upper rod string forces the upper shearing barrel 1 to instantly shear the three shearing pins 5, at the moment, the shearing pin seat 4 and the pressing rod 3 are bounced under the elastic force of the pressing rod spring 7, the pressing rod 3 is separated from the fixed valve ball 10, and the fixed valve returns to a normal working state (figure 7).
Claims (7)
1. The utility model provides a general type striking open-type closed control ware on oil-well pump which characterized in that: include from last adapter sleeve, the lower section of thick bamboo of cuting, the solid fixed valve casing that connects gradually extremely down, the adapter sleeve upper end is used for being connected with the pump barrel, and the solid fixed valve casing lower extreme is used for being connected with tail pipe under the pump, is connected with the solid fixed valve cover on the solid fixed valve casing, the upper end of the lower section of thick bamboo of cuting stretches into in the adapter sleeve to through can cuting stop gear and connect the upper section of thick bamboo of cuting, can be connected with the elasticity depression bar on the shear pin seat of cuting stop gear, under the initial condition, the lower extreme of elasticity depression bar stretches into the solid fixed valve intracavity and compresses tightly.
2. The universal impact open-type sealing controller for the oil well pump according to claim 1, wherein: can cut stop gear includes the shear pin seat that sets up in the shearing section of thick bamboo down, is equipped with the shearing pin that radially stretches out on the shear pin seat, corresponds the shearing pin and is equipped with the axial spout on the shearing section of thick bamboo down, it is spacing to cut the locating part that the pin worn out the axial spout and set up on the rethread adapter sleeve inner wall after corresponding the pin hole that penetrates the shearing section of thick bamboo.
3. The universal impact open-type sealing controller for the oil well pump according to claim 2, wherein: the locating part is the interior step that sets up at the adapter sleeve inner wall.
4. The universal impact open-type sealing controller for the oil well pump according to claim 2 or 3, wherein: the shearing pin seat is at least 3 groups of support seats uniformly distributed on the circumference, a hollow structure is formed between every two adjacent branch mechanisms, an upper channel of each branch mechanism is communicated with a lower channel, and each group of branch mechanisms is connected with a shearing pin.
5. The universal impact open-type sealing controller for the oil well pump according to claim 2, wherein: the elastic pressure rod comprises a pressure rod fixedly connected with the shear pin seat through threads, a pressure rod spring is sleeved on the pressure rod, two ends of the pressure rod spring are respectively abutted against the shear pin seat and the lower shearing barrel, and the lower end of the pressure rod is abutted against the fixed valve ball.
6. The universal impact open type sealing controller for the oil well pump according to claim 1 or 2, wherein: the center of the fixed valve cover is provided with a center hole which is used for being connected with the elastic pressure rod, and the fixed valve cover is provided with an upper end valve port which is communicated with the valve cavity.
7. The universal impact open type sealing controller for the oil well pump according to claim 1 or 2, wherein: the upper end of the upper shearing barrel is provided with an opening, and the side wall of the upper shearing barrel is provided with an opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718710.2U CN210799331U (en) | 2019-10-14 | 2019-10-14 | Universal impact open type closed controller on oil well pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921718710.2U CN210799331U (en) | 2019-10-14 | 2019-10-14 | Universal impact open type closed controller on oil well pump |
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| CN210799331U true CN210799331U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324651A (en) * | 2020-11-02 | 2021-02-05 | 中国石油化工股份有限公司 | Inclined shaft oil well pump and standing valve assembly thereof |
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2019
- 2019-10-14 CN CN201921718710.2U patent/CN210799331U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324651A (en) * | 2020-11-02 | 2021-02-05 | 中国石油化工股份有限公司 | Inclined shaft oil well pump and standing valve assembly thereof |
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