CN120819335A - An environmental protection operation reciprocating travel switch control device and control method - Google Patents

An environmental protection operation reciprocating travel switch control device and control method

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Publication number
CN120819335A
CN120819335A CN202511323737.1A CN202511323737A CN120819335A CN 120819335 A CN120819335 A CN 120819335A CN 202511323737 A CN202511323737 A CN 202511323737A CN 120819335 A CN120819335 A CN 120819335A
Authority
CN
China
Prior art keywords
steel ball
oil
sliding sleeve
reciprocating travel
travel switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202511323737.1A
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Chinese (zh)
Other versions
CN120819335B (en
Inventor
叶立权
李贺
高超
张可
孙洪岩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin Zhongwei Oil And Gas Engineering Co ltd
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Jilin Zhongwei Oil And Gas Engineering Co ltd
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Application filed by Jilin Zhongwei Oil And Gas Engineering Co ltd filed Critical Jilin Zhongwei Oil And Gas Engineering Co ltd
Priority to CN202511323737.1A priority Critical patent/CN120819335B/en
Publication of CN120819335A publication Critical patent/CN120819335A/en
Application granted granted Critical
Publication of CN120819335B publication Critical patent/CN120819335B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/06—Sleeve valves

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Actuator (AREA)

Abstract

The invention relates to the technical field of oil exploitation downhole tools, and provides an environment-friendly operation reciprocating travel switch control device and a control method. The sliding sleeve is inserted into the cylinder body, the cylinder body comprises a lower cylinder body and an upper cylinder body, and a release annulus is arranged on the inner wall of the upper cylinder body; the sliding sleeve is provided with a strip-shaped hole at one side close to the lower cylinder body, the steel ball is arranged in the strip-shaped hole, and the steel ball can radially move or axially move; the oil-resistant rubber ring is arranged on the inner wall of the lower cylinder body, the position of the oil-resistant rubber ring corresponds to the steel ball, and the switch coupling is inserted into the sliding sleeve.

Description

Environment-friendly operation reciprocating travel switch control device and control method
Technical Field
The invention relates to the technical field of petroleum exploitation downhole tools, in particular to an environment-friendly operation reciprocating travel switch control device and a control method.
Background
In oil exploitation underground operation, states such as oil sleeve communication, closing and the like are required to be accurately controlled so as to meet various requirements of oil exploitation technology on an underground fluid channel. The existing downhole tool control structure has the problems of complex control flow, low state switching reliability and the like, and is difficult to efficiently and stably realize function switching in different operation stages, and the reliability of oil extraction efficiency and operation safety and environmental protection is affected, so that a downhole tool control scheme with reasonable structural design and accurate state switching is needed.
Disclosure of Invention
In view of the above, the invention aims to provide an environment-friendly operation reciprocating travel switch control device and a control method, which can realize stable switching of different operation states by precisely controlling the axial movement position of a switch coupling, meet the underground operation requirements of oil jacket communication, closing and the like, and improve the operation efficiency and the safety and the environment-friendly reliability of the oil extraction process.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
The reciprocating travel switch control device for environment-friendly operation comprises a cylinder body, a sliding sleeve, a sealing ring, an oil-resistant rubber ring, a steel ball and a switch coupling, wherein the sliding sleeve is inserted into the cylinder body, the cylinder body comprises a lower cylinder body and an upper cylinder body, and a release annulus is arranged on the inner wall of the upper cylinder body;
the sliding sleeve is arranged at a position close to one side of the lower cylinder body, a strip-shaped hole is formed in the sliding sleeve, the steel ball is arranged in the strip-shaped hole, and the steel ball can radially move or axially move;
The oil-resistant rubber ring is arranged on the inner wall of the lower cylinder body and corresponds to the steel ball in position;
The switch coupling is inserted into the sliding sleeve;
The steel ball and the release annulus form a linkage mechanism, when the switch coupling ascends to the position of the release annulus, the steel ball is partially embedded into the release annulus to limit the sliding sleeve to move, and meanwhile, the limit on the switch coupling is relieved, so that the oil sleeve is communicated;
when the switch collar descends, the steel ball is extruded and reset into the oil-resistant rubber ring, and the sealing is triggered to be closed.
Furthermore, the sealing ring is arranged on the sliding sleeve, the sliding sleeve is in sealing fit with the lower cylinder body through the sealing ring, and the lower cylinder body is connected with the upper cylinder body through threads.
Further, the release annulus is positioned in the middle of the inner wall of the upper cylinder body, and the depth of the release annulus allows the steel ball to be partially embedded.
Further, the lower part of the lower cylinder body and the upper part of the upper cylinder body are respectively connected with oil pipes.
The invention further aims at providing an environment-friendly operation reciprocating travel switch control method, wherein the step S1 is to initially seal and close, namely, a switch coupling is positioned in a lower cylinder, and a sealing ring seals an oil jacket channel;
Step S2, the switch coupling descends through the steel ball, namely the switch coupling descends to extrude the steel ball to enable part of the steel ball to enter the oil-resistant rubber ring, and the steel ball resets after passing through;
S3, in a pre-opening state, the switch collar is upwards driven to lead the steel ball to be separated from the oil-resistant rubber ring and enter the inner cavity of the upper cylinder;
s4, in the oil jacket communicating state, the switch coupling continues to ascend to the position of the release annulus, the steel ball is embedded into the release annulus locking sliding sleeve, and an oil jacket channel is opened;
and S5, in a pre-closing state, the switch collar is in downward contact with the steel ball, the sliding sleeve and the sealing ring are pushed to move downward, and the oil sleeve channel is closed again.
Further, in the step S4, the steel ball falls back to the working position by gravity after the switch collar passes through the release annulus.
Furthermore, in the oil jacket communicating state in the step S4, a positive circulation well flushing operation may be performed.
Further, the switch coupling is driven by the sucker rod, the ascending 20 meters trigger oil sleeve is communicated, and the descending 20 meters trigger oil sleeve is closed.
Compared with the prior art, the environment-friendly operation reciprocating travel switch control method provided by the invention has the following advantages:
According to the environment-friendly operation reciprocating travel switch control device and the control method, the axial movement positions of the switch couplings are accurately controlled, so that stable switching of different operation states is realized, the underground operation requirements of oil jacket communication, closing and the like are met, and the operation efficiency in the oil extraction process and the reliability of safety and environment protection are improved. Meanwhile, the control logic and the state switching time of the switch coupling can be flexibly adjusted according to different oil extraction process requirements, and the device is suitable for various underground operation scenes, particularly in the underground operation process, the pipe rod is cleaned underground through channel control, and environment-friendly operation is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is an overall schematic diagram of an environmental protection operation reciprocating travel switch control device according to an embodiment of the present invention;
FIG. 2 shows a sealing off state before the well is run in the reciprocating travel switch control device for environmental protection operation according to the embodiment of the invention;
FIG. 3 shows a state before a switch coupling of the reciprocating travel switch control device for environmental protection operation of the embodiment of the invention descends through a steel ball;
FIG. 4 shows an upstream pre-open state of a switch collar of the environmentally friendly reciprocating travel switch control device according to the embodiment of the present invention;
FIG. 5 shows a state of the switch collar of the reciprocating travel switch control device for environmental protection operation in which the switch collar is opened up to be communicated with the oil jacket;
FIG. 6 shows a switch collar downstream pre-close state of the environmentally friendly reciprocating travel switch control device according to an embodiment of the present invention;
Reference numerals illustrate:
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and the cylindrical description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The embodiment relates to an environment-friendly operation reciprocating travel switch control device, which can improve the operation efficiency and the safety and environment-friendly reliability of the oil extraction process.
Based on the design concept, an exemplary structure of the environment-friendly operation reciprocating travel switch control device in this embodiment is shown in fig. 1-6, and mainly comprises a cylinder body, a sliding sleeve 2, a sealing ring 3, an oil-resistant rubber ring 4, a steel ball 5 and a switch collar 8, wherein the sliding sleeve 2 is inserted into the cylinder body, the cylinder body comprises a lower cylinder body 1 and an upper cylinder body 6, a release annulus 7 is arranged on the inner wall of the upper cylinder body 6, one side of the sliding sleeve 2 is close to the lower cylinder body 1, a strip-shaped hole is arranged on the sliding sleeve 2, the steel ball 5 can radially move and axially move, the oil-resistant rubber ring 4 is arranged on the inner wall of the lower cylinder body 1 and corresponds to the steel ball 5 in position, the switch collar 8 is inserted into the sliding sleeve 2, the steel ball 5 and the release annulus 7 form a linkage mechanism, when the switch collar 8 moves up to the position of the release annulus 7, the steel ball 5 is partially embedded into the release annulus 7 to limit the sliding sleeve 2, and simultaneously, the limit of the switch collar 8 is released, when the switch collar 8 moves down, the steel ball 5 is extruded and reset into the oil-resistant rubber ring 4, and the seal is triggered to be closed.
The sealing ring 3 is arranged on the sliding sleeve 2, the sliding sleeve 2 is in sealing fit with the lower cylinder 1 through the sealing ring 3, and the lower cylinder 1 is connected with the upper cylinder 6 through screw threads.
The release annulus 7 is located in the middle of the inner wall of the upper cylinder 6 and has a depth allowing the steel balls 5 to be partially embedded.
The lower part of the lower cylinder body 1 and the upper part of the upper cylinder body 6 are respectively connected with oil pipes.
The control method of the environment-friendly operation reciprocating travel switch comprises the following steps:
as shown in FIG. 2, the step S1 is initially sealed and closed, wherein a switch coupling 8 is positioned in a lower cylinder 1, and a sealing ring 3 seals an oil jacket channel;
As shown in fig. 3, step S2, the switch collar 8 descends through the steel ball 5, namely, the switch collar 8 descends to squeeze the steel ball 5 to make part of the steel ball enter the oil-resistant rubber ring 4, and the steel ball 5 resets after passing;
In the pre-opening state, as shown in fig. 4, in the step S3, the switch collar 8 drives the steel ball 5 to be separated from the oil-resistant rubber ring 4 and enter the inner cavity of the upper cylinder 6;
in the step S4, in the oil sleeve communicating state, the switch coupling 8 continues to ascend to the position of the release annulus 7, the steel ball 5 is embedded into the release annulus 7 to lock the sliding sleeve 2, and an oil sleeve channel is opened;
in the pre-closing state shown in fig. 6, in step S5, the switch collar 8 is in contact with the steel ball 5 downward, so as to push the sliding sleeve 2 and the sealing ring 3 to move downward, and the oil sleeve channel is closed again.
In step S4, the steel ball 5 falls back to the working position by gravity after the switching collar 8 passes through the release annulus 7.
And (4) in the oil jacket communicating state, performing positive circulation well flushing operation.
The switch coupling 8 is driven by a sucker rod, the ascending 20m trigger oil sleeve is communicated, and the descending 20m trigger oil sleeve is closed.
When the environment-friendly operation reciprocating travel switch control device of the embodiment is used, firstly, the device is assembled:
According to the design requirement, install sealing washer 3, steel ball 5 in the sliding sleeve in proper order, oil resistant rubber ring 4 installs in the corresponding position in last barrel 1, installs the sliding sleeve assembly in lower barrel 1, connects last barrel 6, carries out whole sealed pressure testing before going down the well and is qualified, and finally ground assembly switch coupling 8 ensures that each part is installed in place, that the motion clearance is reasonable, ensures that axial displacement is smooth and easy.
The device is then lowered into the well:
1. after the assembly is completed, the device is installed between the 2 nd and the 3 rd oil pipes about 19 meters above the deep well pump along with the oil pipe, and the sealing effect is verified after the oil is discharged.
2. The switch collar is 5-10 meters above the piston along with the down-hole position of the sucker rod.
Subsequently, the opening operation:
When the sucker rod is arranged at the upper body for 20 meters, the well is washed in a positive circulation way, and the oil pipe and the sucker rod are washed underground.
And finally closing operation:
the sucker rod is put down for 20 meters or the oil well is normally pumped, and the underground device can be closed.
In actual underground operation application, the triggering time and control parameters of state switching can be adjusted by combining with specific oil reservoir geological conditions and oil extraction process schemes, for example, when high-pressure oil reservoir operation is performed, the pretightening force of a sealing component is properly increased, the moving pressure and the moving tension of a switching coupling 8 are optimized, and the reliable operation of the device is ensured.
The environment-friendly operation reciprocating travel switch control device adopting the embodiment well realizes accurate state switching, realizes accurate and orderly switching of multiple states from sealing closing to oil sleeve communication and the like by matching with the structure of each part through the axial movement of the switch coupling 8, and meets the severe requirements of underground complex operation on channel control.
The multi-state transition flow can avoid tool damage or operation faults caused by state mutation, and improve the overall operation reliability.
The method has strong adaptability, can flexibly adjust the control logic and the state switching time of the switch coupling according to different oil extraction process requirements, is suitable for various underground operation scenes, and particularly realizes the environment-friendly operation of cleaning the pipe rod underground through channel control in the underground operation process.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (8)

1.一种环保作业往复式行程开关控制装置，包括筒体、滑套（2）、密封圈（3）、耐油橡胶环（4）、钢球（5）和开关接箍（8），其特征在于：所述滑套（2）插装于所述筒体内，所述筒体包括下筒体（1）和上筒体（6），所述上筒体（6）内壁设有释放环空（7）；1. An environmentally friendly reciprocating travel switch control device, comprising a cylinder, a sleeve (2), a sealing ring (3), an oil-resistant rubber ring (4), a steel ball (5) and a switch coupling (8), characterized in that: the sleeve (2) is inserted into the cylinder, the cylinder comprises a lower cylinder (1) and an upper cylinder (6), and the inner wall of the upper cylinder (6) is provided with a release annulus (7); 所述滑套（2）安装位置靠近所述下筒体（1）一侧，所述滑套（2）上设有条形孔，所述钢球（5）安装于所述条形孔内，所述钢球（5）即可径向活动也可轴向活动；The installation position of the sliding sleeve (2) is close to one side of the lower cylinder (1), and the sliding sleeve (2) is provided with a strip hole. The steel ball (5) is installed in the strip hole, and the steel ball (5) can move radially and axially. 所述耐油橡胶环（4）安装于所述下筒体（1）内壁且位置与所述钢球（5）对应；The oil-resistant rubber ring (4) is mounted on the inner wall of the lower cylinder (1) and its position corresponds to the steel ball (5); 所述开关接箍（8）插装于所述滑套（2）内；The switch coupling (8) is inserted into the sliding sleeve (2); 所述钢球（5）与释放环空（7）构成联动机构，当开关接箍（8）上行至释放环空（7）位置时，钢球（5）部分嵌入释放环空（7）以限制滑套（2）移动，同时解除对开关接箍（8）的限位，实现油套联通；The steel ball (5) and the release annulus (7) form a linkage mechanism. When the switch coupling (8) moves upward to the release annulus (7) position, the steel ball (5) is partially embedded in the release annulus (7) to limit the movement of the sliding sleeve (2), and at the same time, the limit on the switch coupling (8) is released to achieve oil sleeve communication. 当开关接箍（8）下行时，钢球（5）受挤压复位至耐油橡胶环（4）内，触发密封关闭。When the switch coupling (8) moves downward, the steel ball (5) is squeezed and reset into the oil-resistant rubber ring (4), triggering the seal to close. 2.根据权利要求1所述的环保作业往复式行程开关控制装置，其特征在于：所述密封圈（3）安装于所述滑套（2）上，所述滑套（2）通过所述密封圈（3）与所述下筒体（1）形成密封配合；2. The environmental protection operation reciprocating travel switch control device according to claim 1, characterized in that: the sealing ring (3) is installed on the sliding sleeve (2), and the sliding sleeve (2) forms a sealing fit with the lower cylinder (1) through the sealing ring (3); 所述下筒体（1）与所述上筒体（6）通过丝扣连接。The lower cylinder (1) and the upper cylinder (6) are connected via threads. 3.根据权利要求1所述的环保作业往复式行程开关控制装置，其特征在于：所述释放环空（7）位于所述上筒体（6）内壁中部，其深度允许所述钢球（5）部分嵌入。3. The environmental protection operation reciprocating travel switch control device according to claim 1 is characterized in that: the release annulus (7) is located in the middle of the inner wall of the upper cylinder (6), and its depth allows the steel ball (5) to be partially embedded. 4.根据权利要求1所述的环保作业往复式行程开关控制装置，其特征在于：所述下筒体（1）下部和所述上筒体（6）上部分别连接油管。4. The environmental protection operation reciprocating travel switch control device according to claim 1, characterized in that the lower part of the lower cylinder (1) and the upper part of the upper cylinder (6) are respectively connected to oil pipes. 5.一种环保作业往复式行程开关控制方法，其特征在于，包括以下步骤：5. A method for controlling an environmentally friendly reciprocating travel switch, comprising the following steps: 步骤S1初始密封关闭：开关接箍（8）位于下筒体（1）内，密封圈（3）封闭油套通道；Step S1: Initial sealing and closing: the switch coupling (8) is located in the lower cylinder (1), and the sealing ring (3) closes the oil jacket passage; 步骤S2开关接箍（8）下行通过钢球（5）：开关接箍（8）下行挤压钢球（5）使其部分进入耐油橡胶环（4），通过后钢球（5）复位；Step S2: the switch coupling (8) moves downward and passes through the steel ball (5): the switch coupling (8) moves downward and squeezes the steel ball (5) so that it partially enters the oil-resistant rubber ring (4), and the steel ball (5) is reset after passing through; 步骤S3预打开状态：开关接箍（8）上行带动钢球（5）脱离耐油橡胶环（4），进入上筒体（6）内腔；Step S3: Pre-opening state: the switch coupling (8) moves upward to drive the steel ball (5) to separate from the oil-resistant rubber ring (4) and enter the inner cavity of the upper cylinder (6); 步骤S4油套联通状态：开关接箍（8）继续上行至释放环空（7）位置，钢球（5）嵌入释放环空（7）锁定滑套（2），油套通道打开；Step S4: Oil-casing connection state: the switch coupling (8) continues to move upward to the release annulus (7) position, the steel ball (5) is embedded in the release annulus (7) to lock the sliding sleeve (2), and the oil-casing channel is opened; 步骤S5预关闭状态：开关接箍（8）下行接触钢球（5），推动滑套（2）及密封圈（3）下移，重新封闭油套通道。Step S5: Pre-closing state: the switch coupling (8) moves downward to contact the steel ball (5), pushing the sliding sleeve (2) and the sealing ring (3) downward to re-close the oil jacket passage. 6.根据权利要求5所述的环保作业往复式行程开关控制方法，其特征在于：所述步骤S4中，钢球（5）在开关接箍（8）通过释放环空（7）后，依靠重力回落至工作位置。6. The environmental protection operation reciprocating travel switch control method according to claim 5, characterized in that: in the step S4, the steel ball (5) falls back to the working position by gravity after the switch coupling (8) passes through the release annulus (7). 7.根据权利要求5所述的环保作业往复式行程开关控制方法，其特征在于：所述步骤S4的油套联通状态下，可进行正循环洗井操作。7. The environmental protection operation reciprocating travel switch control method according to claim 5, characterized in that: in the oil-casing connected state in step S4, a positive circulation well flushing operation can be performed. 8.根据权利要求5所述的环保作业往复式行程开关控制方法，其特征在于：所述开关接箍（8）通过抽油杆驱动，上行20米触发油套联通，下行20米触发油套关闭。8. The environmental protection operation reciprocating travel switch control method according to claim 5 is characterized in that: the switch coupling (8) is driven by the sucker rod, and the oil casing is connected when it goes up 20 meters, and is closed when it goes down 20 meters.
CN202511323737.1A 2025-09-17 2025-09-17 An environmentally friendly reciprocating limit switch control device and control method Active CN120819335B (en)

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CN202511323737.1A CN120819335B (en) 2025-09-17 2025-09-17 An environmentally friendly reciprocating limit switch control device and control method

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201358755Y (en) * 2009-02-17 2009-12-09 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 Underground switch slide bushing
US20120085548A1 (en) * 2010-10-06 2012-04-12 Colorado School Of Mines Downhole Tools and Methods for Selectively Accessing a Tubular Annulus of a Wellbore
CN204299542U (en) * 2014-11-18 2015-04-29 中国石油化工股份有限公司 A kind of hydrostatic closedown sliding sleeve switch
CN114059963A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Underground pipe column and hydraulic opening tool for opening sliding sleeve switch
CN219220366U (en) * 2023-02-27 2023-06-20 中石化石油工程技术服务有限公司 Ball-throwing-free oil sleeve annulus communication device for underground operation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201358755Y (en) * 2009-02-17 2009-12-09 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 Underground switch slide bushing
US20120085548A1 (en) * 2010-10-06 2012-04-12 Colorado School Of Mines Downhole Tools and Methods for Selectively Accessing a Tubular Annulus of a Wellbore
CN204299542U (en) * 2014-11-18 2015-04-29 中国石油化工股份有限公司 A kind of hydrostatic closedown sliding sleeve switch
CN114059963A (en) * 2020-07-31 2022-02-18 中国石油化工股份有限公司 Underground pipe column and hydraulic opening tool for opening sliding sleeve switch
CN219220366U (en) * 2023-02-27 2023-06-20 中石化石油工程技术服务有限公司 Ball-throwing-free oil sleeve annulus communication device for underground operation

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