CN102278091A - Hydraulic sliding sleeve - Google Patents
Hydraulic sliding sleeve Download PDFInfo
- Publication number
- CN102278091A CN102278091A CN2011101923602A CN201110192360A CN102278091A CN 102278091 A CN102278091 A CN 102278091A CN 2011101923602 A CN2011101923602 A CN 2011101923602A CN 201110192360 A CN201110192360 A CN 201110192360A CN 102278091 A CN102278091 A CN 102278091A
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- hydraulic
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- urceolus
- main shaft
- sliding sleeve
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Abstract
The invention relates to a hydraulic sliding sleeve, comprising an upper spindle, wherein the tube wall of the upper spindle is provided with a first hydraulic channel and a second hydraulic channel which are parallel to a central line, an upper outer cylinder is sheathed outside the upper spindle, an upper part sealing combination, a middle part sealing combination and a lower part sealing combination arranged between the upper spindle and the upper outer cylinder divide a space between the upper outer cylinder and the upper spindle into an upper hydraulic cavity and a lower hydraulic cavity, the first hydraulic channel is communicated with the upper hydraulic cavity, the second hydraulic channel is communicated with the lower hydraulic cavity, and the upper outer cylinder can slide up and down by suppressing the upper hydraulic cavity and the lower hydraulic cavity. The invention has the advantages that: the hydraulic sliding sleeve has a simple structure, is convenient to operate and is safe and reliable, and the hydraulic sliding sleeve can be opened and closed only by carrying out suppressing operation on a hydraulic pipeline.
Description
Technical field
The invention belongs to the completion technique field of oil well, the well that the control liquid that particularly belonging to is provided outward by well is handled or the valve gear field of well especially relate to a kind of hydraulic pressure sliding sleeve.
Background technology
At present, same well different layers position or a lot of in the oilfield development process at home with the moisture different situation of one deck different layers section, conventional completion technique can't be adjusted the producing zone position, can not control the water gas coning of commingling production, and exploitation effect is poor.In addition, a lot of oilfield exploitations have entered late high water content period, and the oil bearing formation property gap is big, and the ordinary production that can not satisfy high water-cut well because of conventional completion technique requires to cause closing well.Done a large amount of research in order to solve the domestic and international personnel of above these problems, the intelligent completion technique that someone proposes can responding curve of well be adjusted producing zone position, the gas coning of commingling production control water, realize separate zone production, divide the well exploitation, the exploitation rate of control different layers position or different wells, the overall efficiency of the well of improving the standard/Multilateral Wells exploitation.Sliding sleeve is the key tool in the intelligent completion, the predominant use of sliding sleeve be close, unlatching or the one or more reservoirs of throttling, or remove to adjust pressure between reservoir, rate of flow of fluid etc.The domestic intelligent completion system that does not also have at present moulding has just begun to carry out some preliminary researchs in intelligent well technologies, with its approximate technology mainly be separate zone production and some technology such as sliding sleeve by steel wire or coiled tubing switch.For example adopt and to be lowered to instrument separately and could to realize the unlatching of sliding sleeve or close, not only there is risk in this operation, might not be unlocked (perhaps closing) by sliding sleeve, also need to be lowered to the situation that one-trip string increases the activity duration more, increased the completion cost simultaneously yet.
Summary of the invention
The present invention provides use in a kind of oil field development manufacturing process simple in structure for solving the technical problem that exists in the known technology, is convenient to operation and safe and reliable, only need can realize the hydraulic pressure sliding sleeve of opening, closing by hydraulic line being suppressed operation.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of hydraulic pressure sliding sleeve comprises main shaft, and last main shaft is the tubular that two ends connect, and last main shaft upper end is connected with top connection, and the lower thread of last main shaft is connected with lower main axis, and lower main axis top is provided with oil recovery hole radially, and the lower main axis lower end is connected with lower contact,
It is characterized in that: on the barrel of last main shaft, be provided with first hydraulic channel and second hydraulic channel, first hydraulic channel is parallel with center line with second hydraulic channel, the outside of last main shaft is set with urceolus, the middle part of going up outer tube inner surface is fixed with the middle part seal combination, the outer surface of upper of last main shaft be positioned at urceolus with part be provided with top seal combination, the lower external face of last main shaft be positioned at urceolus with part on be set with sealed base, the bottom of sealed base is held out against by the upper surface of lower main axis, sealed base top is against on the locating ring that is packed in main shaft, the lower seal aggregate erection is on sealed base, the top seal combination, the middle part seal combination, the space that the lower seal combination will be gone up between urceolus and the last main shaft is divided into hydraulic cavities and lower hydraulic pressure chamber, described first hydraulic channel is communicated with last hydraulic cavities, second hydraulic channel is communicated with lower hydraulic pressure chamber
Following urceolus seals to have the bottom at through hole radially, the bottom hermetically sealed case is equipped with down urceolus, the lower end of following urceolus is adjacent with the spring stop that is sleeved on the lower main axis, the middle part of lower main axis is set with the compression spring, the compression spring is provided with the spring urceolus outward, the bottom of compression spring is by the spring block location that is sleeved on the lower main axis, and spring block is held out against by the end of lower contact.The setting of compression spring is when moving on the urceolus under hydraulic action, following urceolus upwards moves under the effect of compression spring, can effectively the bottom sealing be sheltered from, prevent the destructions such as burn into erosion of subsurface environment, effectively the sealing of protection bottom the bottom sealing; And when needs were closed the duct, the bottom of last urceolus should guarantee tight the contact with the top of following urceolus, last urceolus just can move down and promote down that urceolus moves down, and can guarantee the effect that seals effectively thereby reached bottom sealing and last urceolus and following urceolus.
The present invention can also be by the following technical solutions:
External thread part in the last urceolus upper end sheath that also has been threaded also accompanies mud-scraping ring between the inner peripheral surface of sheath and the outer circumference surface of last main shaft, and the inner surface of mud-scraping ring matches with the external surface of last main shaft.Be provided with the structure of cleaning shoe, can be when the hydraulic pressure sliding sleeve move up and down, mud in the removal on the spindle outer wall or attachment are avoided the abrasion of particles top seal combination in mud or the attachment, and then have strengthened the sealing effectiveness of hydraulic pressure sliding sleeve.
In last hydraulic cavities, last spindle thread is connected with the retaining ring, and the retaining ring is a tubular, is provided with direction and groove that barrel cut off parallel with axis in the bottom of retaining ring, and the lower end of retaining ring is provided with outside projection, and these projection both sides are the inclined-plane.Position on the sealing of middle part on the middle part inwall of described outer sleeve is provided with depressed part, depressed part is provided with internal diameter less than projection in two ends up and down, the angle of the protruding upper surface of depressed part upper end is consistent with the soffit of the projection of retaining ring lower end, and the angle of the convex lower surface of depressed part lower end is consistent with the convex upper surface of retaining ring upper end.Be provided with the retaining ring in last hydraulic cavities, under hydraulic coupling did not reach condition with the compression of the protuberance of retaining ring lower end, misoperation can not take place because of the accidentalia interference in the external world in last urceolus, thereby has guaranteed reliability of system operation.Simultaneously designed a sunk area, can reduce and go up urceolus decrement to retaining ring end protuberance when sliding, reduced active force between the two, and then reduced frictional force at last urceolus, thus the resistance when finally having reduced last urceolus and moving.
Description of drawings
Fig. 1 is a structural representation of the present invention, and this moment, the hydraulic pressure sliding sleeve was an open mode;
Fig. 2 is a structural representation of the present invention, and this moment, the hydraulic pressure sliding sleeve was a closed condition;
Fig. 3 is the local enlarged diagram of Fig. 1.
Among the figure:
1, top connection; 2, go up main shaft; 3, sheath; 4, mud-scraping ring; 5, go up urceolus; 6, top seal combination; 7, retaining ring; 8, middle part seal combination; 9, lower seal combination; 10, sealed base; 11, following urceolus; 12, bottom sealing; 13, lower main axis; 14, spring urceolus; 15, compression spring; 16, lower contact; 17, oil recovery hole; 18, first hydraulic channel; 19, second hydraulic channel; 20, locating ring; 21, go up hydraulic cavities; 22, lower hydraulic pressure chamber; 23, spring stop; 24, spring block.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, a kind of hydraulic pressure sliding sleeve comprises main shaft 2, and last main shaft is the tubular that two ends connect, last main shaft upper end is connected with top connection 1, and the lower thread of last main shaft is connected with lower main axis 13, and lower main axis top is provided with oil recovery hole 17 radially, the lower main axis lower end is connected with lower contact 16
On the barrel of last main shaft, be provided with first hydraulic channel 18 and second hydraulic channel 19, first hydraulic channel is parallel with the center line of last main shaft with second hydraulic channel, the outside of last main shaft is set with urceolus 5, the middle part of going up outer tube inner surface is fixed with middle part seal combination 8, the outer surface of upper of last main shaft be positioned at urceolus with part be provided with top seal combination 6, the lower external face of last main shaft be positioned at urceolus with part on be set with sealed base 10, the bottom of sealed base is held out against by the upper surface of lower main axis, sealed base top is against on the locating ring 20 that is packed in main shaft, lower seal combination 9 is installed on the sealed base, the top seal combination, the middle part seal combination, the space that the lower seal combination will be gone up between urceolus and the last main shaft is divided into hydraulic cavities 21 and lower hydraulic pressure chamber 22, described first hydraulic channel is communicated with last hydraulic cavities, second hydraulic channel is communicated with lower hydraulic pressure chamber
Following urceolus seals 12 in oil recovery hole radially to have the bottom, the bottom hermetically sealed case is equipped with down urceolus 11, the lower end of following urceolus is adjacent with the spring stop 23 that is sleeved on the lower main axis, the middle part of lower main axis is set with compression spring 15, the compression spring is provided with spring urceolus 14 outward, the bottom of compression spring is by spring block 24 location that are sleeved on the lower main axis, and spring block is held out against by the end of lower contact.Being provided with of compression spring can guarantee do not having enough hydraulic couplings to overcome under the situation of compressive force of spring, and the oil recovery hole can keep normally open, guarantees the oil well aim of stable operation thereby reach.
External thread part in the last urceolus upper end sheath 3 that also has been threaded also accompanies mud-scraping ring 4 between the inner peripheral surface of sheath and the outer circumference surface of last main shaft, and the inner surface of mud-scraping ring matches with the external surface of last main shaft.Be provided with the structure of cleaning shoe, can be when the hydraulic pressure sliding sleeve move up and down, mud in the removal on the spindle outer wall or attachment are avoided the abrasion of particles top seal combination in mud or the attachment, cause the sealing effectiveness of hydraulic pressure sliding sleeve to descend.
In last hydraulic cavities, last spindle thread is connected with retaining ring 7, and the retaining ring is a tubular, is provided with direction and groove that barrel cut off parallel with axis in the bottom of retaining ring, and the lower end of retaining ring is provided with outside projection, and these projection both sides are the inclined-plane.Position on the sealing of middle part on the middle part inwall of described outer sleeve is provided with depressed part, the two ends internal diameter is less than projection about the depressed part, the angle of the protruding upper surface of depressed part upper end is consistent with the soffit of the projection of retaining ring lower end, and the angle of the convex lower surface of depressed part lower end is consistent with the convex upper surface of retaining ring upper end.Be provided with the retaining ring in last hydraulic cavities, under hydraulic coupling did not reach condition with the compression of the protuberance of retaining ring lower end, misoperation can not take place because of the accidentalia interference in the external world in last urceolus, thereby has guaranteed reliability of system operation.
Operating principle of the present invention is:
When needs stop the oil reservoir production at sliding sleeve place, make progress by first hydraulic channel and to suppress in the hydraulic cavities, when the hydraulic coupling in last hydraulic cavities reached the required active force of lug boss that can overcome compression retaining ring end, last urceolus moved down, and seal combination moves down in the middle part of driving.When the lower surface of last urceolus touched down the upper surface of urceolus, last urceolus also promoted down urceolus and moves down, the compression spring.When the protuberance upper surface up to last urceolus sunk area top is positioned at the soffit of retaining ring bottom protuberance, the protuberance of retaining ring props up the protuberance upper surface on urceolus sunk area top, avoided last urceolus upwards to return, thereby sealed the oil recovery hole because of the disturbing factor of chance.
When the oil reservoir that needs the sliding sleeve place is produced, suppress in lower hydraulic pressure chamber by second hydraulic channel, when the active force of hydraulic coupling in lower hydraulic pressure chamber and compression spring reaches the required active force of the lug boss that can overcome compression retaining ring end, last urceolus and following urceolus move up, and seal combination moves up in the middle part of driving.When the decrement of compression spring discharges, following urceolus stops under the effect of stopper slot, cover in the bottom sealing effectively, prevent that the bottom sealing is damaged by corrosion, the lower surface of last urceolus disengages with the upper surface of following urceolus, going up urceolus then continues to move up under the effect of hydraulic coupling, when the protuberance soffit up to last urceolus sunk area bottom is positioned at the soffit of retaining ring bottom protuberance, the protuberance of retaining ring props up the protuberance soffit of urceolus sunk area bottom, avoided last urceolus to return downwards, thereby opened the oil recovery hole because of the disturbing factor of chance.
Although in conjunction with the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (4)
1. a hydraulic pressure sliding sleeve comprises main shaft, and last main shaft is the tubular that two ends connect, and last main shaft upper end is connected with top connection, and the lower thread of last main shaft is connected with lower main axis, and lower main axis top is provided with through hole radially, and the lower main axis lower end is connected with lower contact,
It is characterized in that: on the barrel of last main shaft, be provided with first hydraulic channel and second hydraulic channel, first hydraulic channel is parallel with center line with second hydraulic channel, the outside of last main shaft is set with urceolus, the middle part of going up outer tube inner surface is fixed with the middle part seal combination, the outer surface of upper of last main shaft be positioned at urceolus with part be provided with top seal combination, the lower external face of last main shaft be positioned at urceolus with part on be set with sealed base, the bottom of sealed base is held out against by the upper surface of lower main axis, sealed base top is against on the locating ring that is packed in main shaft, the lower seal aggregate erection is on sealed base, the top seal combination, the middle part seal combination, the space that the lower seal combination will be gone up between urceolus and the last main shaft is divided into hydraulic cavities and lower hydraulic pressure chamber, described first hydraulic channel is communicated with last hydraulic cavities, second hydraulic channel is communicated with lower hydraulic pressure chamber
Following urceolus seals to have the bottom at through hole radially, the bottom hermetically sealed case is equipped with down urceolus, the lower end of following urceolus is adjacent with the spring stop that is sleeved on the lower main axis, the middle part of lower main axis is set with the compression spring, the compression spring is provided with the spring urceolus outward, the bottom of compression spring is by the spring block location that is sleeved on the lower main axis, and spring block is held out against by the end of lower contact.
2. a kind of hydraulic pressure sliding sleeve according to claim 1, it is characterized in that, external thread part in the last urceolus upper end sheath that also has been threaded also accompanies mud-scraping ring between the inner peripheral surface of sheath and the outer circumference surface of last main shaft, and the inner surface of mud-scraping ring matches with the external surface of last main shaft.
3. a kind of hydraulic pressure sliding sleeve according to claim 1, it is characterized in that in last hydraulic cavities, last spindle thread is connected with the retaining ring, the retaining ring is a tubular, be provided with direction and groove that barrel cut off parallel with axis in the bottom of retaining ring, the lower end of retaining ring is provided with outside projection, and these projection both sides are the inclined-plane.
4. a kind of hydraulic pressure sliding sleeve according to claim 3, it is characterized in that, the middle part inwall of described outer sleeve, the position is provided with depressed part on the sealing of middle part, the two ends internal diameter is less than projection about the depressed part, the angle of the protruding upper surface of depressed part upper end is consistent with the soffit of the projection of retaining ring lower end, and the angle of the convex lower surface of depressed part lower end is consistent with the convex upper surface of retaining ring upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110192360 CN102278091B (en) | 2011-07-11 | 2011-07-11 | Hydraulic sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110192360 CN102278091B (en) | 2011-07-11 | 2011-07-11 | Hydraulic sliding sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278091A true CN102278091A (en) | 2011-12-14 |
| CN102278091B CN102278091B (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110192360 Active CN102278091B (en) | 2011-07-11 | 2011-07-11 | Hydraulic sliding sleeve |
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| Country | Link |
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| CN (1) | CN102278091B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790524A (en) * | 2014-01-21 | 2014-05-14 | 中国海洋石油总公司 | Surge pressure control short joint |
| CN103883737A (en) * | 2014-03-28 | 2014-06-25 | 上海德干重型机器有限公司 | Sealing device |
| WO2018000470A1 (en) * | 2016-06-29 | 2018-01-04 | 西南石油大学 | Intelligent switch valve for reservoir transformation, production monitoring and control and construction method therefor |
| CN111396015A (en) * | 2020-05-19 | 2020-07-10 | 中国海洋石油集团有限公司 | Desirable big latus rectum fracturing sliding sleeve of ball seat |
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| US6202742B1 (en) * | 1998-11-03 | 2001-03-20 | Halliburton Energy Services, Inc. | Pack-off device for use in a wellbore having a packer assembly located therein |
| US20030024706A1 (en) * | 2000-12-14 | 2003-02-06 | Allamon Jerry P. | Downhole surge reduction method and apparatus |
| CN2635907Y (en) * | 2003-08-14 | 2004-08-25 | 胡才志 | Hydraulic controllable sleeve |
| US7392839B1 (en) * | 2007-04-30 | 2008-07-01 | Petroquip Energy Services, Llp | Single line sliding sleeve downhole tool assembly |
| CN201843582U (en) * | 2010-10-22 | 2011-05-25 | 中国石油天然气集团公司 | Hydraulic sliding sleeve for well completion |
| CN202140065U (en) * | 2011-07-11 | 2012-02-08 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
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2011
- 2011-07-11 CN CN 201110192360 patent/CN102278091B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202742B1 (en) * | 1998-11-03 | 2001-03-20 | Halliburton Energy Services, Inc. | Pack-off device for use in a wellbore having a packer assembly located therein |
| US20030024706A1 (en) * | 2000-12-14 | 2003-02-06 | Allamon Jerry P. | Downhole surge reduction method and apparatus |
| CN2635907Y (en) * | 2003-08-14 | 2004-08-25 | 胡才志 | Hydraulic controllable sleeve |
| US7392839B1 (en) * | 2007-04-30 | 2008-07-01 | Petroquip Energy Services, Llp | Single line sliding sleeve downhole tool assembly |
| CN201843582U (en) * | 2010-10-22 | 2011-05-25 | 中国石油天然气集团公司 | Hydraulic sliding sleeve for well completion |
| CN202140065U (en) * | 2011-07-11 | 2012-02-08 | 中国海洋石油总公司 | Hydraulic sliding sleeve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790524A (en) * | 2014-01-21 | 2014-05-14 | 中国海洋石油总公司 | Surge pressure control short joint |
| CN103883737A (en) * | 2014-03-28 | 2014-06-25 | 上海德干重型机器有限公司 | Sealing device |
| CN103883737B (en) * | 2014-03-28 | 2016-04-13 | 上海德干重型机器有限公司 | Seal arrangement |
| WO2018000470A1 (en) * | 2016-06-29 | 2018-01-04 | 西南石油大学 | Intelligent switch valve for reservoir transformation, production monitoring and control and construction method therefor |
| US10626704B2 (en) | 2016-06-29 | 2020-04-21 | Chengdu University Of Technology | Intelligent switching valve for reservoir reformation and production monitoring and control and construction method therefor |
| CN111396015A (en) * | 2020-05-19 | 2020-07-10 | 中国海洋石油集团有限公司 | Desirable big latus rectum fracturing sliding sleeve of ball seat |
| CN111396015B (en) * | 2020-05-19 | 2022-05-06 | 中国海洋石油集团有限公司 | Desirable big latus rectum fracturing sliding sleeve of ball seat |
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| Publication number | Publication date |
|---|---|
| CN102278091B (en) | 2013-12-18 |
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Effective date of registration: 20161220 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Dongcheng District, Chaoyangmen, North Street, No. 25, ocean Oil Mansion, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: CNOOC Energy Technology & Sevices-Supervision &Technology Co. |