CN210152618U - Double-pump barrel tubular pump take-over production string - Google Patents
Double-pump barrel tubular pump take-over production string Download PDFInfo
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- CN210152618U CN210152618U CN201920394011.0U CN201920394011U CN210152618U CN 210152618 U CN210152618 U CN 210152618U CN 201920394011 U CN201920394011 U CN 201920394011U CN 210152618 U CN210152618 U CN 210152618U
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Abstract
The utility model discloses a double-pump bobbin type pump take-over production string, which comprises an upper pump barrel and a lower pump barrel, wherein a throwable fixed valve seat is arranged between the two pump barrels, a fixed valve is arranged at the bottom of the lower pump barrel, when the lower pump barrel produces oil, a sucker rod is connected with a lower plunger and is put into the lower pump barrel, the throwable fixed valve is not put into the lower pump barrel, and the upper pump barrel is only an oil discharge channel of the lower pump; when the pump is checked, the pumping rod and the lower plunger are lifted, the pumping rod, the upper plunger and the throw-type fixed valve are put in, the upper plunger and the throw-type fixed valve are separated after the pumping rod, the upper pump cylinder is replaced for production, and the lower pump cylinder and the fixed valve do not participate in the work and are only an oil inlet channel of the upper pump. Realized the motionless tubular column of tubular pump, only proposed the sucker rod and can change the pump and take over production promptly, the protection oil pipe screw thread does not receive the operation damage, reduces operation intensity, extension tubular pump production tubular column working life.
Description
Technical Field
The utility model belongs to the technical field of oil field oil recovery production and operation and specifically relates to double pump bobbin formula pump takes over production string.
Background
The existing tubular pump often has pump leakage in the oil production process, and needs to be checked. The conventional pump detection operation method is to put the sucker rod out first and then put the pipe column out, which wastes time and labor and has high operation cost. The special pump detection operation method is that when the tubular pump adopts the salvageable fixed valve, the fixed valve is salvaged by using the sucker rod, the plunger and the salvageable fixed valve are replaced to complete the pump detection, and the pump barrel is not replaced. If the pump barrel is damaged due to eccentric wear corrosion, the tubing string and the pump barrel still need to be pulled out.
Along with oil pipe's technical progress, current inside lining oil pipe life-span prolongs greatly, because of the pump leak cause examine the pump cycle far away be less than inside lining oil pipe's life-span, move the tubular column and examine the pump operation at every turn and all can cause the damage of certain degree to inside lining oil pipe screw thread, reduce inside lining pipe life.
Application No.: 201320315761.7 discloses a fixed valve assembly of a tubular pump, which comprises a fixed valve cover, a fixed valve joint and a valve ball, wherein the fixed valve cover is in threaded connection with the fixed valve joint, the upper end surface of the fixed valve cover is provided with an oil-gas channel, and the upper end of the fixed valve joint is provided with a valve seat; the valve ball is arranged in a cavity formed by the fixed valve cover and the fixed valve joint. The beneficial effects of the utility model are that with the integration of disk seat and solid fixed valve joint, change the seal structure of original solid fixed valve assembly, solve solid fixed valve joint up end and easily puncture and influence sealed problem, reduce the oil well operation, practice thrift the operating cost.
Application No.: 201020218986.7 discloses a double-stage pump barrel and double-stage plunger combined pump barrel tubing pump, which is a device in oil well production, overcomes the defects of other devices, and is formed by connecting an upper double-stage pump barrel, a lower double-stage pump barrel, an upper double-stage plunger and a lower double-stage plunger.
Application No.: 200420038916.8A high-efficiency oil-well tubing pump with double pump barrels is provided, which belongs to an oil-well pumping device of oil field, and comprises a large pump barrel, a small pump barrel connected with the upper part of the large pump barrel, a large pump plunger in the large pump barrel, a small pump plunger in the small pump barrel, two plungers connected together through a connecting rod, a traveling valve on the upper and lower parts of the large pump plunger, a driven valve on the upper and lower parts of the small pump plunger, a pull rod on the upper end of the small pump plunger, a fixed valve seat fixed on the bottom of the large pump barrel, and a fixed valve oil on the fixed valve seat, wherein when the pumping rod is used, the down resistance is greatly reduced, the pumping efficiency is obviously improved, the pumping rod is always pulled, the probability of fatigue damage is reduced, when in stroke, the liquid column pressure is exerted on the driven valve, the hydraulic impact of liquid on the fixed valve is reduced, the probability of damage to the fixed valve is also greatly reduced, thereby the maintenance cycle of the oil-well pump is prolonged, the eccentric wear between the well bore and the sucker rod is also reduced.
Application No.: 201621456646.1A modified oil-well tubing pump comprises an oil-well tubing pump matched with a pump barrel and a salvageable fixed valve connected with the pump barrel through a disconnecting device, wherein the pump barrel is connected with an oil pipe, a sealing surface of a baffle platform arranged on the salvageable fixed valve is matched with a sealing surface of a boss on the inner wall of the pump barrel, flexible sealing devices are arranged in sealing ring grooves uniformly distributed on a plunger of the oil-well tubing pump in a matched manner, and the plunger of the oil-well tubing pump is matched with the pump barrel through the flexible sealing devices. The oil well pump maintenance device is reasonable in structure and reliable in performance, the oil well pump can be maintained only by lifting the sucker rod string without lifting the oil pipe string, the operation intensity of a pump to be detected is reduced, the friction condition of the plunger and the pump cylinder is improved, the leakage is reduced, the pump efficiency is improved, and the service life is prolonged. Although the technology discloses a disconnecting device and a salvageable fixed valve, the pump barrel cannot be replaced without moving the pipe column, and the pump can be detected only by moving the pipe column when the pump barrel is damaged and leaked.
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
An object of the utility model is to provide a two pump barrel tubular pumps take over production string, need not propose oil pipe, only need propose the sucker rod, can realize the pump operation of changing, reduce operation intensity, extension production string working life.
In order to achieve the above object, the utility model discloses a following technical scheme, double pump bobbin formula pump take over production string, including oil pipe, last pump barrel, lower pump barrel, go up the pump barrel upper end and connect oil pipe, still including throwing formula standing valve disk seat, go up the pump barrel lower extreme and can throw formula standing valve disk seat upper end and be connected, pump barrel upper end is connected with can throw formula standing valve disk seat lower extreme down.
And a fixed valve is arranged at the lower port of the lower pump barrel.
When the outer diameter of a lower plunger in the lower pump barrel is larger than the inner diameter of the valve seat of the drop-type fixed valve, the upper end of the lower plunger is connected with the lower end of the sucker rod through a disconnecting connector; when the outer diameter of a lower plunger in the lower pump barrel is smaller than the inner diameter of a valve seat of the drop-type fixed valve, the upper end of the lower plunger is directly connected with the lower end of the sucker rod in a screw thread mode or welded.
The throwing type fixed valve can be installed on the throwing type fixed valve seat, the upper end of the throwing type fixed valve is connected with the lower end of an upper plunger in the upper pump barrel through a disconnecting device, and the upper end of the upper plunger is connected with a sucker rod.
The disconnecting device comprises a screw rod and a screw sleeve which are matched with each other and are in thread-type connection, and the disconnecting device is disconnected and connected through relative rotation.
The inner diameter of the valve seat of the throwing type fixed valve is smaller than the inner diameter of the upper pump cylinder, and the inner diameter of the upper pump cylinder is smaller than the inner diameter of the oil pipe.
When the lower pump barrel is needed for oil extraction, the sucker rod is connected with the lower plunger and is put into the lower pump barrel, the throw-type fixed valve is not put in, the lower plunger moves up and down along with the sucker rod, and the upper pump barrel does not participate in the work at the moment and is only an oil discharge channel of the lower pump; when the lower pump barrel is used for oil extraction, a centralizer matched with the upper pump barrel is arranged on the sucker rod, so that eccentric wear of the sucker rod on other parts is avoided; when the lower pump barrel is lost and a pump needs to be checked, the pumping rod and the lower plunger are lifted, then the pumping rod and the upper plunger are connected, the lower part of the upper plunger is connected with the throw-type fixed valve, and after the lower plunger descends to the throw-type fixed valve seat, the throw-type fixed valve and the throw-type fixed valve seat are sealed; the plunger on the rotary lifting sucker rod is separated from the throw-type fixed valve, so that the pump replacement production is realized; when the upper pump barrel is needed for oil extraction, the sucker rod is connected with the upper plunger to move up and down in the upper pump barrel, the upper pump barrel and the throw-type fixed valve participate in working, and the lower pump barrel and the fixed valve do not participate in working at the moment and are only oil inlet channels of the upper pump.
Compared with the prior art, the utility model following beneficial effect has:
the inner diameter matching of the upper pump cylinder and the lower pump cylinder is divided into two conditions: one is that the inner diameter of the lower pump cylinder is smaller than the drift diameter of the throw-type fixed valve seat, the lower plunger piston can smoothly pass through the upper pump cylinder and the throw-type fixed valve seat, and the lower plunger piston is directly connected with the sucker rod; and in the other case, the inner diameter of the lower pump barrel is larger than or equal to the drift diameter of the throw-type fixed valve seat, and the lower plunger is butted with the sucker rod by adopting a disconnecting connector. The upper part of the disconnecting device is arranged at the lower end of the sucker rod, and the lower part of the disconnecting device connected with the upper end of the lower plunger reserved in the lower pump cylinder is butted after passing through the upper pump cylinder and the valve seat of the throw-type fixed valve, so that the lower pump plunger is driven to move up and down.
When the lower pump barrel is used for oil extraction, the sucker rod is connected with the lower plunger and is put into the lower pump barrel, the throw-type fixed valve is not put into the lower pump barrel, and the upper pump barrel is only an oil discharge channel of the lower pump; when the pump is checked, the pumping rod and the lower plunger are lifted, the pumping rod, the upper plunger and the throw-type fixed valve are put in, the upper plunger and the throw-type fixed valve are separated after the pumping rod, the upper pump cylinder is replaced for production, and the lower pump cylinder and the fixed valve do not participate in the work and are only an oil inlet channel of the upper pump. The utility model discloses a tubular pump motionless tubular column only proposes the sucker rod and interchangeable pump takes over production promptly, and protection oil pipe screw thread does not receive the operation damage, reduces operation intensity, extension tubular pump production tubular column working life.
Drawings
Fig. 1 is the schematic view of the cross-sectional structure of the lower pump cylinder during operation.
Fig. 2 is the schematic view of the sectional structure of the upper pump cylinder during operation.
The labels in the figure are: the device comprises a sucker rod 1, an oil pipe 2, an upper pump barrel 3, a throw-able fixed valve seat 4, a lower plunger 5, a lower pump barrel 6, a fixed valve 7, an upper plunger 8 and a throw-able fixed valve 9.
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.
Referring to fig. 1 to 2, the present invention provides a technical solution:
a double-pump-barrel tubular pump replacing production string comprises an oil pipe 2, an upper pump barrel 3 and a lower pump barrel 6, wherein the upper end of the upper pump barrel is connected with the oil pipe, the double-pump-barrel tubular pump replacing production string further comprises a throwing type fixed valve seat 4, the lower end of the upper pump barrel is connected with the upper end of the throwing type fixed valve seat, and the upper end of the lower pump barrel is connected with the lower end of the throwing type fixed valve seat.
And a fixed valve 7 is arranged at the lower port of the lower pump barrel.
When the outer diameter of a lower plunger 5 in the lower pump barrel is larger than the inner diameter of a valve seat of the drop-type fixed valve, the upper end of the lower plunger is connected with the lower end of the sucker rod 1 through a disconnecting connector; when the outer diameter of a lower plunger in the lower pump barrel is smaller than the inner diameter of a valve seat of the drop-type fixed valve, the upper end of the lower plunger is directly connected with the lower end of the sucker rod in a screw thread mode or welded.
The throwing type fixed valve 9 can be installed on the throwing type fixed valve seat, the upper end of the throwing type fixed valve is connected with the lower end of an upper plunger 8 in the upper pump barrel through a disconnecting device, and the upper end of the upper plunger is connected with the sucker rod 1.
The disconnecting device comprises a screw rod and a screw sleeve which are matched with each other and are in thread-type connection, and the disconnecting device is disconnected and connected through relative rotation. The connecting-disconnecting device acting on the upper end of the lower plunger can adopt a mode that a screw sleeve is arranged at the lower end of the sucker rod, and a screw rod is arranged at the upper end of the lower plunger. The disconnecting and connecting device acting on the lower end of the upper plunger piston can adopt a mode that a screw sleeve is fixed at the lower end of the upper plunger piston and a screw rod is fixed at the upper end of a throwing type fixed valve. Of course, other types of disconnectors commonly used in the art may be used as the disconnector.
The inner diameter of the valve seat of the throwing type fixed valve is smaller than the inner diameter of the upper pump cylinder, and the inner diameter of the upper pump cylinder is smaller than the inner diameter of the oil pipe.
The utility model provides an interconnect mode of all parts is conventional mode in this technical field, for example screw thread formula is connected, welding, integral type structure etc..
As shown in fig. 1 and 2, the upper pump cylinder 3 and the lower pump cylinder 6 are provided with a throwing type fixed valve seat 4 in the middle, a fixed valve 7 is arranged at the bottom of the lower pump cylinder 6, and the lower pump cylinder further comprises an upper plunger 8 matched with the upper pump cylinder 3 and a lower plunger 5 matched with the lower pump cylinder 6. The upper part of the throw-type fixed valve 9 and the lower part of the upper plunger 8 are provided with disconnecting devices to realize disconnection and butt joint. The upper pump barrel 3 is connected with an oil pipe 2, the outer diameter of the upper pump barrel 3 is smaller than the drift diameter of the oil pipe 2, and the outer diameter of the throwing type fixed valve 9 is smaller than the inner diameter of the upper pump barrel 3.
The double-pump barrel type pump replaces the immobile pipe column pump detecting process method of the production pipe column, and comprises the following steps:
1. the oil extraction state of the lower pump barrel is as follows: the double-pump-barrel tubular pump replaces an upper pump barrel 3, a throwing type fixed valve seat 4, a lower pump barrel 6 and a fixed valve 7 of a production pipe column to a designed pump depth position, a sucker rod 1 is connected with a lower plunger 5 and is put into the lower pump barrel 6 to move up and down, the throwing type fixed valve 9 is not put in, the upper pump barrel 3 does not participate in the work at the moment, and only is an oil discharge channel of the lower pump; the centralizer matched with the upper pump barrel 3 can be arranged on the sucker rod 1, so that eccentric wear of the upper pump barrel 3 and the throw-type fixed valve seat 4 and the sucker rod 1 is avoided.
2. When the lower pump barrel 6 is lost and a pump needs to be checked, the sucker rod 1 and the lower plunger 5 are lifted, then the sucker rod 1 and the upper plunger 8 are connected, the lower part of the upper plunger 8 is connected with the throw-type fixed valve 9, and after the lower part of the upper plunger 8 reaches the position of the throw-type fixed valve seat 4, the throw-type fixed valve 9 and the valve seat 4 are sealed. The upper plunger 8 of the rotary lifting sucker rod is separated from the fixed valve 9 which can be thrown, so that the pump replacement production is realized;
3. an oil extraction state of an upper pump barrel: the pumping rod 1 is connected with the upper plunger 8 and moves up and down in the upper pump cylinder 3, the upper pump cylinder 8 and the throw-type fixed valve 9 participate in work, and the lower pump cylinder 6 and the fixed valve 7 do not participate in work at the moment and are only oil inlet channels of the upper pump.
The inner diameter matching of the upper pump cylinder and the lower pump cylinder is divided into two conditions: one is that the inner diameter of the lower pump cylinder is smaller than the drift diameter of the throw-type fixed valve seat, the lower plunger piston can smoothly pass through the upper pump cylinder and the throw-type fixed valve seat, and the lower plunger piston is directly connected with the sucker rod; and in the other case, the inner diameter of the lower pump barrel is larger than or equal to the drift diameter of the throw-type fixed valve seat, and the lower plunger is butted with the sucker rod by adopting a disconnecting connector. The upper part of the disconnecting device is arranged at the lower end of the sucker rod, and the lower part of the disconnecting device connected with the upper end of the lower plunger reserved in the lower pump cylinder is butted after passing through the upper pump cylinder and the valve seat of the throw-type fixed valve, so that the lower pump plunger is driven to move up and down.
When the lower pump barrel is used for oil extraction, the sucker rod is connected with the lower plunger and is put into the lower pump barrel, the throw-type fixed valve is not put into the lower pump barrel, and the upper pump barrel is only an oil discharge channel of the lower pump; when the pump is checked, the pumping rod and the lower plunger are lifted, the pumping rod, the upper plunger and the throw-type fixed valve are put in, the upper plunger and the throw-type fixed valve are separated after the pumping rod, the upper pump cylinder is replaced for production, and the lower pump cylinder and the fixed valve do not participate in the work and are only an oil inlet channel of the upper pump. Realized the motionless tubular column of tubular pump, only proposed the sucker rod and can change the pump and take over production promptly, the protection oil pipe screw thread does not receive the operation damage, reduces operation intensity, extension tubular pump production tubular column working life.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The double-pump-barrel tubular pump replacing production string comprises an oil pipe, an upper pump barrel and a lower pump barrel, wherein the upper end of the upper pump barrel is connected with the oil pipe.
2. The dual pump spool tubular pump take-over production string of claim 1, wherein the lower pump spool lower port mounts a standing valve.
3. The dual pump spool tubular pump take-over production string of claim 1, wherein when the outer diameter of the lower plunger in the lower pump barrel is greater than the inner diameter of the valve seat of the drop-in standing valve, the upper end of the lower plunger is connected to the lower end of the sucker rod through a disconnect coupling; when the outer diameter of a lower plunger in the lower pump barrel is smaller than the inner diameter of a valve seat of the drop-type fixed valve, the upper end of the lower plunger is directly connected with the lower end of the sucker rod in a screw thread mode or welded.
4. The dual-pump spool tube type pump take-over production string as claimed in claim 1, wherein the throwing type fixed valve can be mounted on the throwing type fixed valve seat, the upper end of the throwing type fixed valve is connected with the lower end of the upper plunger in the upper pump barrel through a disconnecting device, and the upper end of the upper plunger is connected with the sucker rod.
5. A dual barrel tubing pump take-over production string as claimed in claim 3 or claim 4 wherein the disconnect comprises a screw and a threaded sleeve of mating threaded connection, disconnected and connected by relative rotation.
6. A dual barrel tubing pump take-over production string as claimed in claim 1 or 2 or 3 or 4 wherein the inner diameter of the seat of the flushable standing valve is smaller than the inner diameter of the upper barrel which is smaller than the inner diameter of the tubing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394011.0U CN210152618U (en) | 2019-03-25 | 2019-03-25 | Double-pump barrel tubular pump take-over production string |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920394011.0U CN210152618U (en) | 2019-03-25 | 2019-03-25 | Double-pump barrel tubular pump take-over production string |
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| CN210152618U true CN210152618U (en) | 2020-03-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734601A (en) * | 2020-07-02 | 2020-10-02 | 中国石油天然气股份有限公司 | Underground double-pump-barrel preset oil well pump and oil pumping method |
| CN111734353A (en) * | 2019-03-25 | 2020-10-02 | 中国石油化工股份有限公司 | Process for replacing production string with double-pump-barrel tubular pump and detecting pump without moving string |
| CN112196486A (en) * | 2020-09-03 | 2021-01-08 | 中国石油天然气股份有限公司 | Pump detection process for immobile pipe column of three-component composite drive breathing pump |
-
2019
- 2019-03-25 CN CN201920394011.0U patent/CN210152618U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734353A (en) * | 2019-03-25 | 2020-10-02 | 中国石油化工股份有限公司 | Process for replacing production string with double-pump-barrel tubular pump and detecting pump without moving string |
| CN111734353B (en) * | 2019-03-25 | 2023-12-12 | 中国石油化工股份有限公司 | Process for taking over production pipe column and checking pump by using double-pump-barrel pipe pump |
| CN111734601A (en) * | 2020-07-02 | 2020-10-02 | 中国石油天然气股份有限公司 | Underground double-pump-barrel preset oil well pump and oil pumping method |
| CN111734601B (en) * | 2020-07-02 | 2024-05-28 | 中国石油天然气股份有限公司 | Underground double-pump cylinder preset oil pump and oil pumping method |
| CN112196486A (en) * | 2020-09-03 | 2021-01-08 | 中国石油天然气股份有限公司 | Pump detection process for immobile pipe column of three-component composite drive breathing pump |
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