CN104314476A - Casing cementing mechanical sliding sleeve and special switch device thereof - Google Patents
Casing cementing mechanical sliding sleeve and special switch device thereof Download PDFInfo
- Publication number
- CN104314476A CN104314476A CN201410425261.8A CN201410425261A CN104314476A CN 104314476 A CN104314476 A CN 104314476A CN 201410425261 A CN201410425261 A CN 201410425261A CN 104314476 A CN104314476 A CN 104314476A
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- sliding sleeve
- central tube
- piston rod
- lower contact
- top connection
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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
- 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
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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)
- Actuator (AREA)
Abstract
The invention discloses a casing cementing mechanical sliding sleeve and a special switch device thereof. The casing cementing mechanical sliding sleeve comprises a first upper hollow connector and a first lower hollow connector, wherein a working oil port communicated with an external oil layer is formed in the first upper hollow connector; a sliding sleeve which can open and close the working oil port is mounted in the first upper hollow connector and the second lower hollow connector. The special switch device comprises a hollow center tube; the outsides of the upper and lower end of the center tube are respectively sleeved with piston cylinders; a countersunk groove is formed in a position, positioned between the two piston cylinders, on the outer wall of the center tube; a clamping device which can radially move and is matched with a preserved groove in the sliding sleeve is mounted in the countersunk groove. When a special switch is downwards pressed, a positioning detent extends out of a position between the two piston cylinders, is clamped in the preserved groove in the sliding sleeve and drives the sliding sleeve to downwards move; when a spring pawl is clamped in a lower clamping groove, the working oil port is opened, so the remining of the oil layer becomes possible.
Description
Technical field
The present invention relates to a kind of well cementation mechanical sliding sleeves and special switch device thereof, belong to technical field of petroleum machinery.
Background technology
Distribution and the existence of underground crude oil are complicated and changeable, common many reservoirs air bubble-shaped distribution.Oil well after finishing drilling under enter sleeve pipe, sleeve pipe becomes the central core of circulation connecting multiple oil reservoirs, by well cementation by sleeve pipe and each oil storage interlayer blocking, then need gather oil reservoirs place by Casing Failure, be communicated with oil reservoirs, thus make crude oil inflow sleeve pipe.
After previous work completes, determine the oil reservoirs that will gather, traditional way uses special perforating bullet that the depth location of corresponding for sleeve pipe oil reservoir is punctured several holes, and fracturing work car implements fracturing work at well head, thus the connection of getting through between sleeve pipe and oil reservoir, oil well is put into serial production.
Adopt traditional gun perforation process to have many deficiencies, as high in impact cover tube lifetime, polluted reservoir, complicated construction technique, construction cost etc., and must according to by dark and shallow order to multiple reservoir exploitation, motor-driven concerning underaction modification scenario.When needing to return other oil reservoir after single oil reservoir collection, also must at perforating site grout off, cannot again open after shutoff collection again migrate after crude oil, affect oily well capacity benefit.
Summary of the invention
The problem to be solved in the present invention is to provide one to oil pipe without any destruction, not polluted reservoir, and the casing cementing mechanical sliding sleeves can closed at any time after once gathering, can again open when needing to open, making oil reservoir carry out second mining becomes possibility.
In order to solve the problem, the present invention by the following technical solutions:
A kind of casing cementing mechanical sliding sleeves, comprise the first top connection of hollow and the first lower contact of hollow, first top connection is provided with the actuator port being communicated with outside oil reservoir, is provided with the sliding sleeve by sliding up and down to open and close actuator port in the first top connection and in the first lower contact.
Below the further optimization of the present invention to such scheme:
Grafting between described first top connection and the first lower contact is also fixed by anti-rotation pin.
Further optimization: the lower end of sliding sleeve is positioned at the first lower contact and is connected with spring detent.
Further optimization: the location interval certain distance near sliding sleeve lower end in the first lower contact is provided with draw-in groove and lower bayonet slot, when spring detent moves up and down with sliding sleeve, can be stuck in draw-in groove or in lower bayonet slot, when spring detent is stuck in upper draw-in groove, actuator port is closed by sliding sleeve upper end, when spring detent is stuck in lower bayonet slot, actuator port is opened.
The switch force of sliding sleeve is controlled by the spring detent of sliding sleeve end, and the switch force that can carry out designing sliding sleeve according to actual needs realizes by changing upper distance between draw-in groove and lower bayonet slot.
Further optimization: the inwall of sliding sleeve is provided with reserved groove near middle position.
The present invention also provides a kind of life-span and the economic benefit that increase oil well, for the special switch device opened or closed by casing cementing mechanical sliding sleeves.
This special switch device comprises the central tube of a hollow, the outside at the two ends up and down of described central tube is respectively installed with piston rod, position on the outer wall of described central tube between two piston rods is provided with deep gouge, be provided with in deep gouge can move radially and with the positioner of the reserved fit depressions on sliding sleeve.
Below the further optimization of the present invention to such scheme:
It is trapezoidal locating detent that positioner comprises the cross section be arranged in deep gouge, and be slidably connected respectively between two sides of locating detent and two piston rods, described locating detent can move radially.
Further optimization: be provided with the little spring that can promote locating detent and move radially between described central tube and locating detent.
Central tube pressurization during use, 1-2MPa and compressible big spring promote piston rod and move, and locating detent is paid under the elastic force of little spring, reserves groove carry out coordinating realizing switch motion with sliding sleeve.
Further optimization: one of them piston rod slidably connects the second top connection away from one end sealing of central tube, the link position of described second top connection and piston rod is provided with the sealing deep gouge of annular, in sealing deep gouge, be provided with big spring, the two ends of described big spring are connected respectively with the second top connection and piston rod;
Described piston rod and be provided with the air cavity of an annular between the second top connection and the end of central tube, described central tube is provided with air vent air cavity and central tube inside are communicated with.
Further optimization: another piston rod slidably connects the second lower contact away from one end sealing of central tube, the link position of described second lower contact and piston rod is provided with the sealing deep gouge of annular, in sealing deep gouge, be provided with big spring, the two ends of described big spring are connected respectively with the second lower contact and piston rod; Described piston rod and be provided with the air cavity of an annular between the second lower contact and the end of central tube, described central tube is provided with air vent air cavity and central tube inside are communicated with
During work, special switch is put into casing cementing mechanical sliding sleeves assigned position, make locating detent corresponding with reserved groove, then when well head applies certain air pressure in the steel pipe be connected with the central tube of switching tools, gas to enter in air cavity and promotes two piston rods and moves respectively to two ends, now, locating detent stretches out between two piston rods, and is stuck in the reserved groove on sliding sleeve.
When special switch is carried, locating detent stretches out between two piston rods, and drive on sliding sleeve and move in the reserved groove being stuck on sliding sleeve, until spring detent is stuck in draw-in groove, sliding sleeve upper end withstands on seam, and actuator port is closed by sliding sleeve, and outside oil cannot enter well head, to oil pipe without any destruction, not polluted reservoir.And mechanical sliding sleeves can be closed at any time after once gathering.
When special switch presses down, locating detent stretches out between two piston rods, and drives sliding sleeve to move down in the reserved groove being stuck on sliding sleeve, and when spring detent is stuck in lower bayonet slot, actuator port is opened, and making oil reservoir carry out second mining becomes possibility.
The present invention can open arbitrarily according to Production requirement or close mechanical sliding sleeves between each oil reservoir, to oil pipe without any destruction, not polluted reservoir, and mechanical sliding sleeves can be closed at any time after once gathering, can again open when needing to open, make oil reservoir carry out second mining and become possibility, greatly increase life-span and the economic benefit of oil well.The switch construction technology of mechanical sliding sleeves is simple, the duration is short, less expensive, can Reusability.Relatively traditional gun perforation process possesses absolute superiority.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of embodiment of the present invention middle sleeve well cementation mechanical sliding sleeves;
Accompanying drawing 2 is the structural representation of embodiment of the present invention breaker in middle device;
Accompanying drawing 3 is service depot's intention that embodiment of the present invention breaker in middle device loads in casing cementing mechanical sliding sleeves.
In figure: 1-first top connection; 2-first sealing ring; 3-sliding sleeve; 4-first lower contact; 5-anti-rotation pin; 6-second sealing ring; 7-locating detent; 8-little spring; 9-second lower contact; 10-spring detent; 11-second top connection; 12-big spring; 13-piston rod; 14-the 3rd sealing ring; 15-central tube; 16-reserves groove; 17-air cavity; 18-air vent; The upper draw-in groove of 19-; 20-lower bayonet slot; 21-seam.
Detailed description of the invention
Embodiment, as shown in Figure 1, a kind of casing cementing mechanical sliding sleeves, comprises the first top connection 1 of hollow and the first lower contact 4 of hollow, and grafting between described first top connection 1 and the first lower contact 4 is also fixed by anti-rotation pin 5.
In first top connection 1 and the first lower contact 4, the sliding sleeve 3 that can slide up and down being installed, in the first top connection 1, being provided with the seam 21 for stoping sliding sleeve 3 to continue upward sliding near the position of sliding sleeve 3 upper end.
Position near sliding sleeve 3 side in first top connection 1 is provided with actuator port 22.
Described sliding sleeve 3 and the first top connection 1 and the first lower contact 4 are directly respectively equipped with the first sealing ring 2.Wherein one end of sliding sleeve 3 is positioned at the first lower contact 4 and is connected with spring detent 10.
Location interval certain distance near sliding sleeve 3 lower end in first lower contact 4 is provided with draw-in groove 19 and lower bayonet slot 20, when spring detent 10 moves up and down with sliding sleeve 3, may be stuck in draw-in groove 19 or in lower bayonet slot 20.
The inwall of sliding sleeve 3 is provided with reserved groove 16 near middle position.
When spring detent 10 is stuck in upper draw-in groove 19, actuator port 22 is closed by sliding sleeve 3 upper end, and when spring detent 10 is stuck in lower bayonet slot 20, actuator port 22 is opened.
The switch force of sliding sleeve is controlled by the spring detent 10 of sliding sleeve end, and the switch force that can carry out designing sliding sleeve according to actual needs realizes by changing upper distance between draw-in groove 19 and lower bayonet slot 20.
As shown in Figure 2, a kind of special switch device for opening above-mentioned casing cementing mechanical sliding sleeves, comprise the central tube 15 of a hollow, the outside at the two ends up and down of described central tube 15 is respectively installed with piston rod 13, is tightly connected between two piston rods 13 and central tube 15 respectively by the second sealing ring 6.
One of them piston rod 13 slidably connects the second top connection 11 away from one end of central tube 15 by the 3rd sealing ring 14 sealing, described second top connection 11 and the link position of piston rod 13 are provided with the sealing deep gouge of annular, in sealing deep gouge, be provided with big spring 12, the two ends of described big spring 12 are connected respectively with the second top connection 11 and piston rod 13.
Described piston rod 13 and be provided with the air cavity 17 of an annular between the second top connection 11 and the end of central tube 15, described central tube 15 is provided with the air vent 18 air cavity 17 and central tube 15 inside are communicated with.
Another piston rod 13 slidably connects the second lower contact 9 away from one end of central tube 15 by the 3rd sealing ring 14 sealing, described second lower contact 9 and the link position of piston rod 13 are provided with the sealing deep gouge of annular, in sealing deep gouge, be provided with big spring 12, the two ends of described big spring 12 are connected respectively with the second lower contact 9 and piston rod 13.
Described piston rod 13 and be provided with the air cavity 17 of an annular between the second lower contact 9 and the end of central tube 15, described central tube 15 is provided with the air vent 18 air cavity 17 and central tube 15 inside are communicated with.
Position on the outer wall of described central tube 15 between two piston rods 13 is provided with deep gouge, is provided with and can moves radially and the positioner matched with the reserved groove 16 on sliding sleeve 3 in deep gouge.It is trapezoidal locating detent 7 that positioner comprises the cross section be arranged in deep gouge, and be slidably connected respectively between two sides of locating detent 7 and two piston rods 13, described locating detent 7 can move radially.
The little spring 8 that can promote locating detent 7 and move radially is installed between described central tube 15 and locating detent 7.
During use, central tube 15 pressurizes, and 1-2MPa and compressible big spring 12 promote piston rod 13 and move, and locating detent 7 is paid under the elastic force of little spring 8, reserves groove 16 carry out coordinating realizing switch motion with sliding sleeve.
As shown in Figure 3, during work, special switch is put into casing cementing mechanical sliding sleeves assigned position, make locating detent 7 corresponding with reserved groove 16, then, when well head applies certain air pressure in the steel pipe be connected with the central tube 15 of switching tools, gas to enter in air cavity 17 and promotes two piston rods 13 and moves respectively to two ends, now, locating detent 7 stretches out between two piston rods 13, and is stuck in the reserved groove 16 on sliding sleeve 3.
Then at well head place by the switch transition realizing mechanical sliding sleeves is put forward or pressed down to the steel pipe that is connected with switching tools.
When special switch is carried, locating detent 7 stretches out between two piston rods 13, and to be stuck in reserved groove on sliding sleeve 3 16 and to drive on sliding sleeve 3 and move, until spring detent 10 is stuck in draw-in groove 19, sliding sleeve 3 upper end withstands on seam 21, and actuator port 22 is closed by sliding sleeve 3, and outside oil cannot enter well head, to oil pipe without any destruction, not polluted reservoir.And mechanical sliding sleeves can be closed at any time after once gathering.
When special switch presses down, locating detent 7 stretches out between two piston rods 13, and to be stuck in reserved groove on sliding sleeve 3 16 and to drive sliding sleeve 3 to move down, when spring detent 10 is stuck in lower bayonet slot 20, actuator port 22 is opened, and making oil reservoir carry out second mining becomes possibility.
The present invention opens any interval sliding sleeve by special switch, trips out switching tools, carries out casing fracturing, carries out oil jacket annular fracturing after also can transferring switching tools.Close sliding sleeve after pressure, the sand fracturing of full well multistage can be realized according to this.
The present invention can exempt perforation construction link, opens any interval sliding sleeve, trips out switching tools, carry out casing fracturing by special switch, carries out oil jacket annular fracturing after also can transferring switching tools.Close sliding sleeve after pressure, the sand fracturing of full well multistage can be realized according to this.
Meanwhile, the present invention can select arbitrarily interval to construct when pressing crack construction, without the need to successively constructing in order.Operating process is as follows:
After oil well finishing drilling, geology department, according to data such as well logging, well loggings, pre-determines the oil reservoirs needing to go into operation.When setting of casing, by calculated permutations, multiple mechanical sliding sleeves is serially connected on sleeve pipe also accurately down to the degree of depth of corresponding oil reservoirs.After completion, according to production requirement, use special switch to be opened by corresponding mechanical sliding sleeves, then go up the through sleeve pipe of fracturing work and oil reservoir.
Claims (10)
1. a casing cementing mechanical sliding sleeves, comprises first top connection (1) of hollow and first lower contact (4) of hollow, it is characterized in that:
First top connection (1) is provided with the actuator port (22) being communicated with outside oil reservoir, is provided with the sliding sleeve (3) by sliding up and down to open and close actuator port (22) in the first top connection (1) and in the first lower contact (4).
2. casing cementing mechanical sliding sleeves according to claim 1, is characterized in that:
Grafting between described first top connection (1) and the first lower contact (4) is also fixed by anti-rotation pin (5).
3. casing cementing mechanical sliding sleeves according to claim 1 and 2, is characterized in that:
The lower end of sliding sleeve (3) is positioned at the first lower contact (4) and is connected with spring detent (10).
4. casing cementing mechanical sliding sleeves according to claim 3, is characterized in that:
Location interval certain distance near sliding sleeve (3) lower end in first lower contact (4) is provided with draw-in groove (19) and lower bayonet slot (20);
When spring detent (10) moves up and down with sliding sleeve (3), can be stuck in draw-in groove (19) or in lower bayonet slot (20), when spring detent (10) is stuck in upper draw-in groove (19), actuator port (22) is closed by sliding sleeve (3) upper end, when spring detent (10) is stuck in lower bayonet slot (20), actuator port (22) is opened.
5. casing cementing mechanical sliding sleeves according to claim 4, is characterized in that:
The inwall of sliding sleeve (3) is provided with reserved groove (16) near middle position.
6., for opening a special switch device for casing cementing mechanical sliding sleeves as claimed in claim 5, comprising the central tube (15) of a hollow, it is characterized in that:
The outside at the two ends up and down of described central tube (15) is respectively installed with piston rod (13), the position outer wall of described central tube (15) is positioned between two piston rods (13) is provided with deep gouge, is provided with and can moves radially and the positioner matched with the reserved groove (16) on sliding sleeve (3) in deep gouge.
7. special switch device according to claim 6, is characterized in that:
It is trapezoidal locating detent (7) that positioner comprises the cross section be arranged in deep gouge, and be slidably connected respectively between two sides of locating detent (7) and two piston rods (13), described locating detent (7) can move radially.
8. special switch device according to claim 7, is characterized in that:
The little spring (8) that can promote locating detent (7) and move radially is installed between described central tube (15) and locating detent (7).
9. special switch device according to claim 8, is characterized in that:
One of them piston rod (13) slidably connects the second top connection (11) away from one end sealing of central tube (15), described second top connection (11) is provided with the sealing deep gouge of annular with the link position of piston rod (13), in sealing deep gouge, be provided with big spring (12), the two ends of described big spring (12) are connected respectively with the second top connection (11) and piston rod (13);
Be provided with the air cavity (17) of an annular between the end of described piston rod (13) and the second top connection (11) and central tube (15), described central tube (15) be provided with the air vent (18) be communicated with central tube (15) inside by air cavity (17).
10. special switch device according to claim 9, is characterized in that:
Another piston rod (13) slidably connects the second lower contact (9) away from one end sealing of central tube (15), described second lower contact (9) is provided with the sealing deep gouge of annular with the link position of piston rod (13), in sealing deep gouge, be provided with big spring (12), the two ends of described big spring (12) are connected respectively with the second lower contact (9) and piston rod (13);
Be provided with the air cavity (17) of an annular between the end of described piston rod (13) and the second lower contact (9) and central tube (15), described central tube (15) be provided with the air vent (18) be communicated with central tube (15) inside by air cavity (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425261.8A CN104314476A (en) | 2014-08-27 | 2014-08-27 | Casing cementing mechanical sliding sleeve and special switch device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410425261.8A CN104314476A (en) | 2014-08-27 | 2014-08-27 | Casing cementing mechanical sliding sleeve and special switch device thereof |
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| Publication Number | Publication Date |
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| CN104314476A true CN104314476A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410425261.8A Pending CN104314476A (en) | 2014-08-27 | 2014-08-27 | Casing cementing mechanical sliding sleeve and special switch device thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019861A (en) * | 2015-02-11 | 2015-11-04 | 中国石油化工股份有限公司 | Directly-operated-type on-off control tool for fracture well-completion and control method thereof |
| CN105986779A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Underground mixed gas fracturing valve |
| CN108603400A (en) * | 2016-02-10 | 2018-09-28 | 韦尔泰克有限公司 | Downhole hardware and downhole system |
| CN108979592A (en) * | 2018-08-03 | 2018-12-11 | 西南石油大学 | A kind of mechanical switch sliding sleeve of bushing and adjust tool |
| CN111188591A (en) * | 2020-03-20 | 2020-05-22 | 山东普瑞思德石油技术有限公司 | Water control device |
| CN114458284A (en) * | 2020-10-30 | 2022-05-10 | 中国石油天然气股份有限公司 | Release device, screen pipe column and production section testing method |
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| US6325151B1 (en) * | 2000-04-28 | 2001-12-04 | Baker Hughes Incorporated | Packer annulus differential pressure valve |
| CN203362115U (en) * | 2013-07-11 | 2013-12-25 | 中国石油集团渤海钻探工程有限公司 | Double-direction starting type sliding sleeve on-off tool |
| CN204152448U (en) * | 2014-08-27 | 2015-02-11 | 青州市春晖科技发展有限公司 | A kind of casing cementing mechanical sliding sleeves and special switch device thereof |
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| CN2348094Y (en) * | 1998-05-07 | 1999-11-10 | 江汉石油管理局采油工艺研究院 | Downhole sliding sleeve switch device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986779A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Underground mixed gas fracturing valve |
| CN105986779B (en) * | 2015-01-30 | 2018-09-04 | 中国石油天然气股份有限公司 | Underground mixed gas fracturing valve |
| CN105019861A (en) * | 2015-02-11 | 2015-11-04 | 中国石油化工股份有限公司 | Directly-operated-type on-off control tool for fracture well-completion and control method thereof |
| CN105019861B (en) * | 2015-02-11 | 2017-07-04 | 中国石油化工股份有限公司 | Direct Action Type pressure break completion switchs control instrument and control method |
| CN108603400A (en) * | 2016-02-10 | 2018-09-28 | 韦尔泰克有限公司 | Downhole hardware and downhole system |
| CN108979592A (en) * | 2018-08-03 | 2018-12-11 | 西南石油大学 | A kind of mechanical switch sliding sleeve of bushing and adjust tool |
| CN108979592B (en) * | 2018-08-03 | 2021-06-15 | 西南石油大学 | A mechanical switch-type casing sliding sleeve and adjustment tool |
| CN111188591A (en) * | 2020-03-20 | 2020-05-22 | 山东普瑞思德石油技术有限公司 | Water control device |
| CN114458284A (en) * | 2020-10-30 | 2022-05-10 | 中国石油天然气股份有限公司 | Release device, screen pipe column and production section testing method |
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Application publication date: 20150128 |