CN109083617B - Downhole end hydraulic switch - Google Patents
Downhole end hydraulic switch Download PDFInfo
- Publication number
- CN109083617B CN109083617B CN201711278283.6A CN201711278283A CN109083617B CN 109083617 B CN109083617 B CN 109083617B CN 201711278283 A CN201711278283 A CN 201711278283A CN 109083617 B CN109083617 B CN 109083617B
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- China
- Prior art keywords
- sleeve
- hydraulic
- sliding sleeve
- push rod
- ball seat
- 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.)
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- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003129 oil well Substances 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
- E21B34/16—Control means therefor being outside the borehole
-
- 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
- E21B2200/04—Ball valves
-
- 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
Landscapes
- 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)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses an underground tail end hydraulic switch, which aims to solve the problem that under the prior art condition in the petroleum exploitation field, the underground tail end hydraulic switch cannot be controlled by a device for testing the tail end of an underground pipeline under the condition of a horizontal section of a horizontal well or a deep well section of a highly-inclined well. The device comprises a shell, a ball seat hydraulic sliding sleeve assembly, a connecting plate, a push rod and an opening and closing mechanism, wherein the opening and closing mechanism comprises a valve core, a valve core control spring and a sleeve. Aiming at the defects of the prior art, the invention provides a novel underground (expansion) hydraulic switch by utilizing the existing underground hydraulic control technology without changing the existing oil well operation standard. The invention can realize on-off control of the switch of the underground oil pipe tail end testing device under the condition of no electric drive, and does not influence the normal operation of an oil well. The invention has ingenious conception and reasonable design, is a brand new exploration of a well bottom hydraulic switch structure, and has obvious progress significance for oil well detection.
Description
Technical Field
The invention relates to the field of petroleum exploitation, and relates to a switch control technology applied to an underground oil pipe tail end testing device.
Background
The logging instrument and the connecting cable are conveyed to the bottom of a well aiming at the horizontal section of the horizontal well or the deep well section of the highly inclined well, and the bottom condition of the well is tested, so that the method is always a difficult problem in the industry.
In the prior art, there is no control hydraulic switch for a downhole pipe end device, and no prior reference technology, structure and application. Therefore, the invention provides a brand new tail end hydraulic switch, which belongs to new application and new structure of underground control technology and has better application prospect.
Disclosure of Invention
The invention aims at: under the prior art condition in the petroleum exploitation field, the underground pipeline end testing device cannot be controlled to switch under the condition of the horizontal section of a horizontal well or the deep well section of a highly-inclined well, and the bottom condition of an oil well is tested. Aiming at the defects of the prior art, the invention provides a novel underground (expansion) hydraulic switch by utilizing the existing underground hydraulic control technology without changing the existing oil well operation standard. The invention can realize on-off control of the switch of the underground oil pipe tail end testing device under the condition of no electric drive, and does not influence the normal operation of an oil well. The invention has ingenious conception and reasonable design, is a brand new exploration of a well bottom hydraulic switch structure, and has obvious progress significance for oil well detection.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The underground tail end hydraulic switch comprises a shell, a ball seat hydraulic sliding sleeve assembly, a push rod and an opening and closing mechanism, wherein the opening and closing mechanism comprises a valve core, a valve core control spring matched with the valve core and a sleeve, and the sleeve is arranged on the push rod;
The ball seat hydraulic sliding sleeve assembly is arranged at one end of the shell, the ball seat hydraulic sliding sleeve assembly can move in a limited distance S relative to the shell, the ball seat hydraulic sliding sleeve assembly is connected with the push rod, and the push rod can transmit the distance S of the ball seat hydraulic sliding sleeve assembly to the sleeve;
The casing comprises inner tube and outer tube, is equipped with the runner between inner tube and the outer tube, and opening and closing mechanism sets up at the both ends of runner and opening and closing mechanism can carry out the switching control to the runner, is sealed chamber between the opening and closing mechanism in the runner, the push rod can trigger sleeve pipe travel distance S and make the case move to the casing inboard and open runner intercommunication inner tube, outer tube.
The sphere is a steel ball.
The inner wall of the shell is provided with a limiting structure for limiting the ball seat hydraulic sliding sleeve assembly.
The push rod comprises a first push rod section and a second push rod section, the ball seat hydraulic sliding sleeve assembly is connected with the first sleeve through the connecting plate and the first push rod section, the ball seat hydraulic sliding sleeve assembly can push the first sleeve to move through the connecting plate and the first push rod section, the first sleeve is connected with the second sleeve through the second push rod section, and the first sleeve can push the second sleeve to synchronously move with the first sleeve through the second push rod section.
The ball seat hydraulic sliding sleeve assembly comprises a hydraulic sliding sleeve, a ball body and a ball body reset spring, wherein the ball body and the ball body reset spring are arranged in the hydraulic sliding sleeve, a counter bore is formed in the hydraulic sliding sleeve, and the ball body can be pressed at the bottom of the counter bore hole by the ball body reset spring.
The ball seat hydraulic sliding sleeve assembly is characterized by further comprising a connecting plate, wherein two sides of the connecting plate are respectively connected with the ball seat hydraulic sliding sleeve assembly and the push rod, and holes matched with the connecting plate are formed in the inner side of the shell.
And a pressure control spring matched with the connecting plate is arranged in the hole.
The push rod and the opening and closing mechanism form a switch main body, and pressure control springs are respectively arranged at two ends of the switch main body and can balance the thrust transmitted by the ball seat hydraulic sliding sleeve assembly.
In view of the foregoing, the present invention provides a downhole end hydraulic switch. The invention is a flow passage switch of an oil pipe end testing device which is opened in a very limited space (between the inner wall and the outer wall of an oil pipe) under the premise that only pressure is provided between the inner wall and the outer wall of the oil pipe.
The working process of the device is as follows: when the device is in a normal operation condition (namely oil pumping operation on a well), as shown in fig. 1, the valve core is in an off state under the action of the sleeve and the pressure control spring, so that a runner switch connected with the sealing cavity and the oil pipe is in an off state; as shown in FIG. 2, when a control pressure P Control of is applied to the well, the ball prevents fluid from passing through the oil pipe under the action of pressure, so that the hydraulic pressure acts on the hydraulic sliding sleeve, and the hydraulic sliding sleeve is forced to move towards the bottom of the well, so that the push rod and the sleeve are pushed to move towards the bottom of the well, finally the valve core loses the support of the sleeve, and moves towards the inside of the oil pipe under the action of the valve core control spring, the flow channel of the sealing cavity is opened, and the valve core automatically locks the reset movement of the sleeve, so that the flow channel is ensured to be in a continuous open state, and the control function of opening the switch is completed.
According to the invention, the pressure control spring can balance misoperation caused by control pressure and random disturbance pressure of downhole operation, namely, the control accuracy is ensured. In the invention, when the working pressure is not applied, the switch is in a normally closed state; when a preset working pressure is applied, the switch is accurately opened; and after the working pressure is removed, the normally open state is kept continuously. Based on the improvement of the structure, the switch is closed or opened, and the normal operation of an oil well is not influenced.
Based on the structural design, the invention effectively solves the following problems: 1) Performing on-off control on a testing device at the tail end (below the ball seat) of the underground pipeline; 2) The state that the switch is half-opened and half-closed in the prior art is overcome; 3) The defect that in the prior art, each valve core cannot be opened synchronously due to wider pressure switch range in the process of opening each valve core along with the gradual action of pressure increase is overcome; 4) The invention uses the valve core and the valve core control spring, and the reset of the locking sleeve is ensured to keep the on state while the flow passage of the sealing cavity is opened, so that the structure of the control switch is more compact and reasonable, and a special locking device is omitted.
In the invention, when a control pressure P Control of is applied to a well, the ball seat is stressed to enable the sliding sleeve to move downwards S, and the push rod pushes the sleeve to move S, so that the valve core acts under the action of the valve core control spring to open the sealing channel. The invention skillfully combines the common hydraulic one-way valve and the hydraulic sliding sleeve, not only can the device at the front end obtain enough hydraulic pressure, but also can transmit the force and the motion along the axial direction of the oil pipe to the control switch of the testing device at the tail end of the oil pipe by utilizing the hydraulic sliding sleeve, thereby completing the underground non-electric drive control and the switch control under the high-temperature high-pressure and complex geological environment. The invention can realize the switch control of the oil pipe end testing device in the environment without electric drive in the horizontal section of the oil well horizontal well or the deep well section of the highly inclined well, so that the underground data acquisition is more accurate and reliable. Meanwhile, the device is a remote hydraulic control underground switch, is connected with the oil pipe, is conveyed by the oil pipe, can be used for a vertical well and a horizontal well, and has higher application value. In addition, based on the improvement of the structure, the underground hydraulic plunger switch and the self-locking protection structure are integrally designed, the switching action does not have an intermediate process, the switch is step-type, the self-locking is performed after the action, and the half-open state does not exist.
Further, based on the improvement of the structure, the device disclosed by the invention can push the axial push rod to move by virtue of the ball seat hydraulic sliding sleeve assembly, and a plurality of switches can be arranged on the running path of the push rod, so that the device can be opened simultaneously, different control functions can be realized respectively, corresponding test requirements can be met, and the expansion of the control application of other switches of the hydraulic plunger switch in the pit can be realized.
The invention makes up for the blank of the application of the downhole detection tool, can effectively improve the detection efficiency and effect of the oil well, and has more accurate and comprehensive downhole detection data. In addition, the invention combines production and detection, realizes online detection, effectively improves the efficiency of oil well operation and reduces the operation cost.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
Fig. 1 is a schematic view of the present invention in a closed state.
Fig. 2 is a schematic view of the invention in an open state.
Fig. 3 is a schematic view of the fluid flow state after the hydraulic switch of the present invention is opened.
The marks in the figure: 1. the valve comprises a shell, 2, a sphere return spring, 3, a sphere, 4, a sliding sleeve, 5, a connecting plate, 6, a push rod, 7, a pressure control spring, 8, a sleeve, 9, a valve core control spring, 10, a valve core, 11 and a flow passage.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Example 1
The underground tail end hydraulic switch of the embodiment comprises a shell, a ball seat hydraulic sliding sleeve assembly, a connecting plate, a push rod and an opening and closing mechanism, wherein the opening and closing mechanism comprises a valve core, a valve core control spring matched with the valve core and a sleeve, and the sleeve is arranged on the push rod. The ball seat hydraulic sliding sleeve assembly comprises a hydraulic sliding sleeve, a ball body arranged in the hydraulic sliding sleeve and a ball body reset spring, wherein a counter bore is arranged in the hydraulic sliding sleeve, and the ball body reset spring can press the ball body at the bottom of the counter bore. Two sides of the connecting plate are respectively connected with the ball seat hydraulic sliding sleeve assembly and the push rod, and the inner side of the shell is provided with a hole matched with the connecting plate; and a pressure control spring which acts with the connecting plate is arranged in the hole.
In this embodiment, ball seat hydraulic pressure sliding sleeve sub-assembly sets up the one end at the casing, and ball seat hydraulic pressure sliding sleeve sub-assembly passes through the connecting plate and links to each other with the push rod, and shells inner wall then is provided with the limit structure who is used for carrying out spacing to ball seat hydraulic pressure sliding sleeve sub-assembly. The shell consists of an inner pipe and an outer pipe, a flow channel is arranged between the inner pipe and the outer pipe, and the opening and closing mechanism is arranged at two ends of the flow channel; a sealing cavity is arranged between the opening and closing mechanisms in the flow channel. The push rod and the opening and closing mechanism form a switch main body, the front end of the switch main body is provided with a pressure control spring, and the pressure control spring can balance the thrust transmitted by the ball seat hydraulic sliding sleeve assembly. In this embodiment, the ball may be a steel ball.
In this structure, the opening and closing mechanism can perform opening and closing control of the flow passage; further, the ball seat hydraulic slide sleeve assembly can move within a limited distance S relative to the shell, the push rod can transmit the distance S of the ball seat hydraulic slide sleeve assembly to the sleeve, and the push rod can trigger the sleeve to move by the distance S so that the valve core moves towards the inner side of the shell and opens the flow channel to form convection.
Further, the push rod of this embodiment includes push rod one section, push rod two sections, and ball seat hydraulic pressure sliding sleeve assembly links to each other and ball seat hydraulic pressure sliding sleeve assembly passes through connecting plate and push rod one section and promotes first sleeve pipe removal through connecting plate and push rod one section, and first sleeve pipe links to each other and first sleeve pipe passes through push rod two sections and promotes second sleeve pipe and first sleeve pipe synchronous motion through push rod two sections. In the structure, the number of the two sections of the push rod can be several, namely the push rod can be formed into N sections (N is a natural number and is more than or equal to 1).
The working process of the device is as follows: when the device is in a normal operation condition (namely oil pumping operation on a well), as shown in fig. 1, the valve core is in an off state under the action of the sleeve and the pressure control spring, so that a runner switch connected with the sealing cavity and the oil pipe is in an off state; as shown in FIG. 2, when a control pressure P Control of is applied to the well, the ball prevents fluid from passing through the oil pipe under the action of pressure, so that the hydraulic pressure acts on the hydraulic sliding sleeve, and the hydraulic sliding sleeve is forced to move towards the bottom of the well, so that the push rod and the sleeve are pushed to move towards the bottom of the well, finally the valve core loses the support of the sleeve, and moves towards the inside of the oil pipe under the action of the valve core control spring, the flow channel of the sealing cavity is opened, and the valve core automatically locks the reset movement of the sleeve, so that the flow channel is ensured to be in a continuous open state, and the control function of opening the switch is completed. Finally, as shown in fig. 3, is in an on state.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (3)
1. The downhole terminal hydraulic switch is characterized by comprising a shell, a ball seat hydraulic sliding sleeve assembly, a push rod and an opening and closing mechanism, wherein the opening and closing mechanism comprises a valve core, a valve core control spring matched with the valve core and a sleeve, and the sleeve is arranged on the push rod;
The ball seat hydraulic sliding sleeve assembly is arranged at one end of the shell, the ball seat hydraulic sliding sleeve assembly can move in a limited distance S relative to the shell, the ball seat hydraulic sliding sleeve assembly is connected with the push rod, and the push rod can transmit the distance S of the ball seat hydraulic sliding sleeve assembly to the sleeve; the ball seat hydraulic sliding sleeve assembly comprises a hydraulic sliding sleeve, a ball body and a ball body reset spring, wherein the ball body and the ball body reset spring are arranged in the hydraulic sliding sleeve, a counter bore is formed in the hydraulic sliding sleeve, and the ball body reset spring can press the ball body at the bottom of the counter bore hole;
the ball seat hydraulic sliding sleeve assembly is characterized by further comprising a connecting plate, wherein two sides of the connecting plate are respectively connected with the ball seat hydraulic sliding sleeve assembly and the push rod, a hole matched with the connecting plate is formed in the inner side of the shell, and a pressure control spring matched with the connecting plate is arranged in the hole;
the inner wall of the shell is provided with a limiting structure for limiting the ball seat hydraulic sliding sleeve assembly;
The shell consists of an inner pipe and an outer pipe, a flow channel is arranged between the inner pipe and the outer pipe, an opening and closing mechanism is arranged at two ends of the flow channel, the opening and closing mechanism can carry out opening and closing control on the flow channel, a sealing cavity is arranged between the opening and closing mechanisms in the flow channel, and the push rod can trigger the sleeve to move by a distance S to enable the valve core to move towards the inner side of the shell and open the flow channel to communicate the inner pipe and the outer pipe;
the push rod and the opening and closing mechanism form a switch main body, and pressure control springs are respectively arranged at two ends of the switch main body and can balance the thrust transmitted by the ball seat hydraulic sliding sleeve assembly.
2. The downhole end hydraulic switch of claim 1, wherein the pushrod comprises a pushrod section and pushrod section, the tee hydraulic bushing assembly is coupled to the first sleeve through the pushrod section and the tee hydraulic bushing assembly moves the first sleeve through the pushrod section, the first sleeve is coupled to the second sleeve through the pushrod section and the first sleeve moves synchronously with the first sleeve through the pushrod section.
3. The downhole end hydraulic switch of claim 1, wherein the pushrod comprises a pushrod section, the tee hydraulic bushing assembly is coupled to the first sleeve by the connecting plate, the pushrod section, and the tee hydraulic bushing assembly is movable by the connecting plate and the pushrod section, the first sleeve is coupled to the second sleeve by the pushrod section, and the first sleeve is movable synchronously with the first sleeve by the pushrod section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278283.6A CN109083617B (en) | 2017-12-06 | 2017-12-06 | Downhole end hydraulic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278283.6A CN109083617B (en) | 2017-12-06 | 2017-12-06 | Downhole end hydraulic switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083617A CN109083617A (en) | 2018-12-25 |
| CN109083617B true CN109083617B (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711278283.6A Active CN109083617B (en) | 2017-12-06 | 2017-12-06 | Downhole end hydraulic switch |
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| Country | Link |
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| CN (1) | CN109083617B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973083B (en) * | 2019-04-18 | 2022-11-25 | 东营市宇彤机电设备有限责任公司 | Cable type electromagnetic wave logging instrument transmitting probe |
| CN113027380B (en) * | 2021-02-08 | 2022-07-29 | 中国石油大学(华东) | Fully-electrically-driven underground safety valve and redundancy control system thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207513585U (en) * | 2017-12-06 | 2018-06-19 | 绵阳固美科技有限公司 | Underground end hydraulic selector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3802992C2 (en) * | 1988-02-02 | 1994-07-14 | Westfalia Becorit Ind Tech | Nozzle valve device for dust control in underground rooms, especially in underground operations with hydraulic expansion units |
| SU1678114A1 (en) * | 1988-12-08 | 1995-04-20 | Всесоюзный научно-исследовательский и проектно-конструкторский институт геофизических методов исследования, испытания и контроля нефтегазоразведочных скважин | Device for fluid circulation in well |
| RU2225502C1 (en) * | 2002-06-25 | 2004-03-10 | Грабовецкий Владимир Леонидович | Method for extracting gas and fluid from the well and sucker-rod well pump implementing said method |
| CN103806886B (en) * | 2012-11-06 | 2016-04-06 | 中国石油化工股份有限公司 | A kind of sealed device of thick oil thermal extraction underground steam and sealed method thereof |
| CN104373108B (en) * | 2014-10-31 | 2017-07-07 | 绵阳固美科技有限公司 | A kind of method and device for controlling downhole detection device to switch |
| CN106703738B (en) * | 2017-02-24 | 2018-02-06 | 中国石油大学(北京) | Continuous oil pipe anti-blow-out box |
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2017
- 2017-12-06 CN CN201711278283.6A patent/CN109083617B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207513585U (en) * | 2017-12-06 | 2018-06-19 | 绵阳固美科技有限公司 | Underground end hydraulic selector |
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Effective date of registration: 20240618 Address after: 1st floor, Building 3, No. 10 Jingyuan Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing, 100176 Applicant after: BEIJING PAFEINUO PRECISION MACHINERY CO.,LTD. Country or region after: China Address before: No. 308, Sunshine Building, Lingchuang Incubator, Science and Technology Innovation District, Mianyang City, Sichuan Province, 621000 Applicant before: MIANYANG GUMEI TECHNOLOGY Co.,Ltd. Country or region before: China |
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