CN213330974U - Closed circulation liquid drainage well washing valve - Google Patents
Closed circulation liquid drainage well washing valve Download PDFInfo
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- CN213330974U CN213330974U CN202022169275.1U CN202022169275U CN213330974U CN 213330974 U CN213330974 U CN 213330974U CN 202022169275 U CN202022169275 U CN 202022169275U CN 213330974 U CN213330974 U CN 213330974U
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Abstract
The utility model relates to a closed circulation liquid drainage well washing valve, which comprises an upper joint, a valve body, a piston cylinder and a lower joint which are all in a hollow tubular structure; one end of the upper joint is connected with one end of the valve body in a sealed axial limiting manner, the other end of the valve body is sleeved on the inner wall of one end of the piston cylinder in a sealed manner, the other end of the piston cylinder is fixedly connected with one end of the lower joint in a sealed manner, a plurality of side holes are formed in the side wall of the valve body, a necking structure is arranged on the inner wall of the valve body, a valve ball is installed at the necking structure, and the inner; the flushing fluid enters the valve body through the upper connector, and the valve ball can limit the flushing fluid from passing through the valve body, so that the flushing fluid enters the annular space through the side opening and is discharged upwards, and the purpose of flushing is achieved; the valve body descends along the piston cylinder by applying pressure to the valve body, the plunger can jack the valve ball, the side opening enters the piston cylinder, power fluid enters the valve body through the upper joint and sequentially passes through the piston cylinder and the lower joint, and the liquid discharge test of the closed-cycle liquid discharge pump is realized. The utility model discloses can realize well-flushing and the dual function of closed circulation flowing back simultaneously.
Description
Technical Field
The utility model belongs to the technical field of test in the pit, especially, relate to a close circulation flowing back well-flushing valve.
Background
In the closed-cycle hydraulic drainage testing process, because the requirement on the cleanliness of the power fluid is high, the well washing operation needs to be carried out before the drainage test is started, the inside of the hollow sucker rod and the shaft fluid are replaced by special power fluid, so that the service life of the closed-cycle drainage pump is prolonged, the closed-cycle drainage pump is ensured to work in a long time, and the recording requirement of drainage test data is met. The well washing operation of the existing production well mainly comprises two modes: one is hot washing to remove wax deposition of rods, pipes and pumps; one is to circularly wash the well through a well washing valve, and realize forward or reverse well washing by the well fluid pressure in the production process. Both of the two types of well washing have the characteristics and application processes of the two types of well washing, but the requirements of the closed-cycle hydraulic drainage well washing construction process cannot be met. In order to meet the technical requirement of closed-loop hydraulic drainage and ensure the reliability of closed-loop drainage operation, the circulating well-flushing valve capable of simultaneously realizing the dual functions of well flushing and closed-loop drainage is provided, and has important practical significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a can realize well-flushing simultaneously and close circulation flowing back dual function's circulation well-flushing valve, both adapted to and closed circulation water conservancy flowing back technical demand, ensures closed circulation flowing back operation reliability again.
The utility model provides a its technical problem take following technical scheme to realize:
a closed-cycle liquid-discharging well-flushing valve comprises an upper joint, a valve body, a piston cylinder and a lower joint which are all of hollow tubular structures; one end of the upper joint is connected with one end of the valve body in a sealed axial limiting manner, the other end of the valve body is sleeved on the inner wall of one end of the piston cylinder in a sealing manner, the other end of the piston cylinder is fixedly connected with one end of the lower joint in a sealing manner, a plurality of side holes are formed in the side wall of the valve body, a necking structure is arranged on the inner wall of the valve body, a valve ball is installed at the necking structure, and the inner wall of the lower joint is fixedly connected with a;
the flushing fluid enters the valve body through the upper connector, and the valve ball can limit the flushing fluid from passing through the valve body, so that the flushing fluid enters the annular space through the side opening and is discharged upwards, and the purpose of flushing is achieved;
the valve body is pressed to enable the valve body to move downwards along the piston cylinder, the plunger can jack the valve ball, the side opening of the plunger enters the piston cylinder, power fluid enters the valve body through the upper joint and sequentially passes through the piston cylinder and the lower joint, and the liquid discharge test of the closed-cycle liquid discharge pump is achieved.
Furthermore, a baffle is fixedly arranged in the upper joint in the radial direction, the baffle can prevent the valve body from moving upwards along the upper joint, and a fluid channel is arranged on the baffle.
Furthermore, a plunger channel is arranged on the plunger, so that power fluid can penetrate through the plunger and enter the lower joint.
Furthermore, a sealing ring is arranged on the inner wall of the piston cylinder, so that the piston cylinder can be in sealing contact with the valve body when moving along the valve body.
The utility model has the advantages that:
the utility model can realize well washing and closed circulating pump liquid discharge test by one-trip pipe column, thereby improving the construction efficiency; the hollow sucker rod and the annular space are cleaned, the pump efficiency of the closed circulating pump is improved, the service life of the closed circulating pump is prolonged, and the optimization of the test liquid drainage process is realized.
Drawings
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a closed-cycle liquid discharge well flushing valve provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a closed-cycle liquid discharge test performed by the closed-cycle liquid discharge well flushing valve according to the embodiment of the present invention;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1.
Example 1
As shown in fig. 1, the closed-cycle liquid-discharge well-flushing valve provided by the present embodiment includes an upper joint 1, a valve body 2, a piston cylinder 4, and a lower joint 6, all of which are hollow tubular structures; one end of the upper joint 1 is connected with one end of the valve body 2 in a sealing and limiting way through a sealing ring 8, a baffle plate 101 is fixedly arranged in the upper joint 1 in the radial direction, the baffle plate can prevent the valve body from moving upwards along the upper joint, and a fluid channel 7 is arranged on the baffle plate; the other end of the valve body 2 is hermetically sleeved on the inner wall of one end of the piston cylinder 4, and it is to be noted that a sealing ring 10 is installed on the inner wall of the piston cylinder 4, so that the piston cylinder 4 can be in sealing contact with the valve body 2 when moving along the valve body 2, the other end of the piston cylinder 4 is hermetically and fixedly connected with one end of the lower joint 6 through a sealing ring 12, a plurality of side holes 9 are formed in the side wall of the valve body 2, a necking structure is arranged on the inner wall of the valve body 2, a valve ball 3 is installed at the necking structure, and a T-shaped plunger 5 is;
the flushing fluid enters the valve body 2 through the upper connector 1, the valve ball 3 can limit the flushing fluid from passing through the valve body 2, so that the flushing fluid enters the annular space through the side opening 9 and is discharged upwards, and the purpose of flushing is achieved;
make valve body 2 follow through exerting pressure to valve body 2 the piston cylinder 4 descends, plunger 5 can be with 3 jack-ups of valve ball, and inside lateral opening 9 got into piston cylinder 4, power liquid got into valve body 2 through top connection 1 to in proper order through piston cylinder, lower clutch, realize closed cycle positive displacement pump flowing back test.
It should be noted that, a plunger channel 11 is provided on the plunger 5, so that the power fluid can pass through the plunger 5 and enter the lower joint 6.
Before construction, the tool is connected in series in the middle of a closed-cycle liquid discharge process pipe column, an upper joint is connected with a hollow sucker rod, and a lower joint is connected with a closed-cycle liquid discharge pump to prepare for entering a well. In the well-flushing process of the device, the flushing valve is in a side channel open state, as shown in figure 1, when in flushing operation, flushing fluid enters the valve body 2 through the fluid channel 7 in the upper connector 1 and is limited by the valve ball 3, the fluid channel in the valve body is not connected with the fluid channel in the piston cylinder 4, and the flushing fluid enters the annular space through the side hole 9 and is discharged upwards, so that the purpose of flushing is achieved; after the well washing is completed, the pipe column is lowered, the valve body 2 descends, the side hole 9 enters the piston cylinder 4, the valve ball 3 ascends under the action of the plunger 5, the well washing valve is opened, the closed-cycle liquid discharge test is carried out, power liquid enters the valve body 2 through the fluid channel 7 in the upper joint 1, flows through the plunger channel 11 and enters the fluid channel in the lower joint, and the closed-cycle liquid discharge pump liquid discharge test is realized.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (4)
1. The utility model provides a closed cycle flowing back well-flushing valve which characterized in that: comprises an upper joint, a valve body, a piston cylinder and a lower joint which are all hollow tubular structures; one end of the upper joint is connected with one end of the valve body in a sealed axial limiting manner, the other end of the valve body is sleeved on the inner wall of one end of the piston cylinder in a sealing manner, the other end of the piston cylinder is fixedly connected with one end of the lower joint in a sealing manner, a plurality of side holes are formed in the side wall of the valve body, a necking structure is arranged on the inner wall of the valve body, a valve ball is installed at the necking structure, and the inner wall of the lower joint is fixedly connected with a;
the flushing fluid enters the valve body through the upper connector, and the valve ball can limit the flushing fluid from passing through the valve body, so that the flushing fluid enters the annular space through the side opening and is discharged upwards, and the purpose of flushing is achieved;
the valve body is pressed to enable the valve body to move downwards along the piston cylinder, the plunger can jack the valve ball, the side opening of the plunger enters the piston cylinder, power fluid enters the valve body through the upper joint and sequentially passes through the piston cylinder and the lower joint, and the liquid discharge test of the closed-cycle liquid discharge pump is achieved.
2. The closed loop drain flushing valve of claim 1, wherein: the valve body is characterized in that a baffle is fixedly arranged in the upper joint in the radial direction, the baffle can prevent the valve body from moving upwards along the upper joint, and a fluid channel is arranged on the baffle.
3. The closed loop drain flushing valve of claim 1, wherein: and a plunger channel is arranged on the plunger, so that power liquid can pass through the plunger and enter the lower joint.
4. The closed loop drain flushing valve of claim 1, wherein: and a sealing ring is arranged on the inner wall of the piston cylinder, so that the piston cylinder can be in sealing contact with the valve body when moving along the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022169275.1U CN213330974U (en) | 2020-09-28 | 2020-09-28 | Closed circulation liquid drainage well washing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022169275.1U CN213330974U (en) | 2020-09-28 | 2020-09-28 | Closed circulation liquid drainage well washing valve |
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| Publication Number | Publication Date |
|---|---|
| CN213330974U true CN213330974U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022169275.1U Active CN213330974U (en) | 2020-09-28 | 2020-09-28 | Closed circulation liquid drainage well washing valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478803A (en) * | 2021-06-16 | 2022-12-16 | 中国石油天然气集团有限公司 | Drilling, grinding and milling tool for water hole grinding shoe and continuous oil pipe |
-
2020
- 2020-09-28 CN CN202022169275.1U patent/CN213330974U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478803A (en) * | 2021-06-16 | 2022-12-16 | 中国石油天然气集团有限公司 | Drilling, grinding and milling tool for water hole grinding shoe and continuous oil pipe |
| CN115478803B (en) * | 2021-06-16 | 2024-02-02 | 中国石油天然气集团有限公司 | Drilling and milling tool for water hole grinding shoes and continuous oil pipe |
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