CN102278091B - Hydraulic sliding sleeve - Google Patents
Hydraulic sliding sleeve Download PDFInfo
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- CN102278091B CN102278091B CN 201110192360 CN201110192360A CN102278091B CN 102278091 B CN102278091 B CN 102278091B CN 201110192360 CN201110192360 CN 201110192360 CN 201110192360 A CN201110192360 A CN 201110192360A CN 102278091 B CN102278091 B CN 102278091B
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- urceolus
- main shaft
- sliding sleeve
- retaining ring
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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 sliding sleeve.
Background technology
At present, in oilfield development process, the moisture different situation of the different intervals of same well different layers position or same layer is a lot of at home, and 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 large, and the normal production requirement that can not meet high water-cut well because of conventional completion technique causes closing well.Done a large amount of research in order to solve the domestic and international personnel of above these problems, the Intelligent Well Completion 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, minute well exploitation, control the exploitation rate of 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 intelligent well 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 well completion system that also there is no moulding at present, just started to carry out some preliminary researchs in intelligent well technologies, and the technology approximate with it is mainly 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 separately instrument and could to realize the unlatching of sliding sleeve or close, not only there is risk in this operation, likely sliding sleeve is not unlocked (or closing), also needs to be lowered to the situation that one-trip string increases the activity duration more, has increased the completion cost simultaneously yet.
Summary of the invention
The present invention provides in a kind of oil field development manufacturing process for solving the technical problem existed in known technology simple in structure, the convenient operation and safe and reliable used, and only need to can realize the hydraulic sliding sleeve of opening, closing by hydraulic line being suppressed to operation.
The technical scheme that the present invention takes for the technical problem existed in the solution known technology is:
A kind of hydraulic sliding sleeve, comprise main shaft, and upper main shaft is the tubular that two ends connect, and upper main shaft upper end is connected with top connection, and the lower thread of upper 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: be provided with the first hydraulic channel and the second hydraulic channel on the barrel of upper main shaft, the first hydraulic channel is parallel with center line with the second hydraulic channel, the outside of upper main shaft is set with urceolus, the middle part of upper outside tube inner surface is fixed with the middle part seal combination, the outer surface of upper of upper main shaft be positioned at urceolus with part be provided with top seal combination, the lower external face of upper 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 combination is arranged on sealed base, the top seal combination, the middle part seal combination, the lower seal combination is divided into upper hydraulic cavities and lower hydraulic pressure chamber by the space between upper urceolus and upper main shaft, described the first hydraulic channel is communicated with upper hydraulic cavities, the second hydraulic channel is communicated with lower hydraulic pressure chamber,
Lower urceolus at through hole radially to have sealed bottom, sealed bottom is set with lower outside cylinder outward, the lower end of lower urceolus is adjacent with the spring stop be sleeved on lower main axis, the middle part of lower main axis is set with Compress Spring, Compress Spring is provided with the spring urceolus outward, the bottom of Compress Spring is by the spring block location be sleeved on lower main axis, and spring block is held out against by the end of lower contact.The setting of Compress Spring is while moving on urceolus under hydraulic action, lower urceolus upwards moves under the effect of Compress Spring, can effectively sealed bottom be sheltered from, prevent the destructions such as burn into erosion of subsurface environment to sealed bottom, effectively protect sealed bottom; And, when needs are closed duct, the top of the bottom of upper urceolus and lower urceolus should guarantee close contact, under upper urceolus just can move down and promote, urceolus moves down, thereby reached sealed bottom and upper urceolus and lower urceolus, can guarantee the effect effectively sealed.
The present invention can also be by the following technical solutions:
External thread part in the upper urceolus upper end sheath that also has been threaded, also accompany mud-scraping ring between the inner peripheral surface of sheath and the outer circumference surface of upper main shaft, and the inner surface of mud-scraping ring matches with the external surface of upper main shaft.Be provided with the structure of cleaning shoe, can be when hydraulic sliding sleeve move up and down, the mud in removal on spindle outer wall or attachment, avoid the abrasion of particles top seal combination in mud or attachment, and then strengthened the sealing effectiveness of hydraulic sliding sleeve.
In upper hydraulic cavities, upper spindle thread is connected with the retaining ring, and the retaining ring is 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 inclined-plane.Position on the seal combination of middle part on the middle part inwall of described upper urceolus is provided with depressed part, the upper and lower two ends of depressed part are provided with internal diameter and are less than projection, 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 upper surface of the projection of retaining ring upper end.Be provided with the retaining ring in upper hydraulic cavities, when hydraulic coupling does not reach under the condition of the protuberance of retaining ring lower end compression, upper urceolus can not disturb misoperation occurs because of extraneous accidentalia, thereby has guaranteed the system reliability of operation.Designed a sunk area at upper urceolus, can reduce upper urceolus decrement to retaining ring end protuberance when sliding, reduced active force between the two, and then reduced frictional force simultaneously, thus the resistance while finally having reduced upper urceolus operation.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and now hydraulic sliding sleeve is open mode;
Fig. 2 is structural representation of the present invention, and now hydraulic sliding sleeve is closed condition;
Fig. 3 is the local enlarged diagram of Fig. 1.
In figure:
1, top connection; 2, upper main shaft; 3, sheath; 4, mud-scraping ring; 5, upper urceolus; 6, top seal combination; 7, retaining ring; 8, middle part seal combination; 9, lower seal combination; 10, sealed base; 11, lower urceolus; 12, sealed bottom; 13, lower main axis; 14, spring urceolus; 15, Compress Spring; 16, lower contact; 17, oil recovery hole; 18, the first hydraulic channel; 19, the second hydraulic channel; 20, locating ring; 21, upper 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, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of hydraulic sliding sleeve comprises main shaft 2, and upper main shaft is the tubular that two ends connect, upper main shaft upper end is connected with top connection 1, and the lower thread of upper 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
Be provided with the first hydraulic channel 18 and the second hydraulic channel 19 on the barrel of upper main shaft, the first hydraulic channel is parallel with the center line of upper main shaft with the second hydraulic channel, the outside of upper main shaft is set with urceolus 5, the middle part of upper outside tube inner surface is fixed with middle part seal combination 8, the outer surface of upper of upper main shaft be positioned at urceolus with part be provided with top seal combination 6, the lower external face of upper 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 arranged on sealed base, the top seal combination, the middle part seal combination, the lower seal combination is divided into upper hydraulic cavities 21 and lower hydraulic pressure chamber 22 by the space between upper urceolus and upper main shaft, described the first hydraulic channel is communicated with upper hydraulic cavities, the second hydraulic channel is communicated with lower hydraulic pressure chamber,
Lower urceolus in oil recovery hole radially to have sealed bottom 12, sealed bottom is set with lower outside cylinder 11 outward, the lower end of lower urceolus is adjacent with the spring stop 23 be sleeved on lower main axis, the middle part of lower main axis is set with Compress Spring 15, Compress Spring is provided with spring urceolus 14 outward, the bottom of Compress Spring is by spring block 24 location that are sleeved on lower main axis, and spring block is held out against by the end of lower contact.The arranging of Compress Spring can guarantee that in the situation that do not have enough hydraulic couplings to overcome the compressive force of spring, the oil recovery hole can keep normally open, thereby reaches the purpose that guarantees oil well stable operation.
External thread part in the upper urceolus upper end sheath 3 that also has been threaded, also accompany mud-scraping ring 4 between the inner peripheral surface of sheath and the outer circumference surface of upper main shaft, and the inner surface of mud-scraping ring matches with the external surface of upper main shaft.Be provided with the structure of cleaning shoe, can be when hydraulic sliding sleeve move up and down, the mud in removal on spindle outer wall or attachment, avoid the abrasion of particles top seal combination in mud or attachment, causes the sealing effectiveness of hydraulic sliding sleeve to descend.
In upper hydraulic cavities, upper spindle thread is connected with retaining ring 7, and the retaining ring is 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 inclined-plane.Position on the seal combination of middle part on the middle part inwall of described upper urceolus is provided with depressed part, the upper and lower two ends of depressed part internal diameter is less than projection, 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 upper surface of the projection of retaining ring upper end.Be provided with the retaining ring in upper hydraulic cavities, when hydraulic coupling does not reach under the condition of the protuberance of retaining ring lower end compression, upper urceolus can not disturb misoperation occurs because of extraneous accidentalia, thereby has guaranteed the system reliability of operation.
Operating principle of the present invention is:
When needs stop the oil reservoir production at sliding sleeve place, make progress in hydraulic cavities and suppress by the first hydraulic channel, until the hydraulic coupling in upper hydraulic cavities reaches in the time of can overcoming the required active force of lug boss that compresses retaining ring end, upper urceolus moves down, and in the middle part of driving, seal combination moves down.When the lower surface of upper urceolus touches the upper surface of lower urceolus, upper urceolus also promotes lower urceolus and moves down, Compress Spring.Until the protuberance upper surface on upper urceolus sunk area top is while being 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, avoid upper urceolus upwards to return because of accidental disturbing factor, thereby sealed the oil recovery hole.
When the oil reservoir that needs the sliding sleeve place is produced, by the second hydraulic channel, in lower hydraulic pressure chamber, suppress, until the active force of the hydraulic coupling in lower hydraulic pressure chamber and Compress Spring reaches in the time of can overcoming the required active force of lug boss that compresses retaining ring end, upper urceolus and lower urceolus move up, and in the middle part of driving, seal combination moves up.When the decrement of Compress Spring discharges, lower urceolus stops under the effect of stopper slot, effectively cover in sealed bottom, prevent that sealed bottom is damaged by corrosion, the upper surface of the lower surface of upper urceolus and lower urceolus disengages, then going up urceolus continues to move up under the effect of hydraulic coupling, until the protuberance soffit of upper urceolus sunk area bottom is while being 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 upper urceolus to return because of accidental disturbing factor downwards, thereby opened the oil recovery hole.
Although the above is described the preferred embodiments of the present invention by reference to the accompanying drawings; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, within these all belong to protection scope of the present invention.
Claims (4)
1. a hydraulic sliding sleeve, comprise main shaft, and upper main shaft is the tubular that two ends connect, and upper main shaft upper end is connected with top connection, and the lower thread of upper 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: be provided with the first hydraulic channel and the second hydraulic channel on the barrel of upper main shaft, the first hydraulic channel is parallel with center line with the second hydraulic channel, the outside of upper main shaft is set with urceolus, the middle part of upper outside tube inner surface is fixed with the middle part seal combination, the outer surface of upper of upper main shaft be positioned at urceolus with part be provided with top seal combination, the lower external face of upper 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 combination is arranged on sealed base, the top seal combination, the middle part seal combination, the lower seal combination is divided into upper hydraulic cavities and lower hydraulic pressure chamber by the space between upper urceolus and upper main shaft, described the first hydraulic channel is communicated with upper hydraulic cavities, the second hydraulic channel is communicated with lower hydraulic pressure chamber,
Lower urceolus at through hole radially to have sealed bottom, sealed bottom is set with lower outside cylinder outward, the lower end of lower urceolus is adjacent with the spring stop be sleeved on lower main axis, the middle part of lower main axis is set with Compress Spring, Compress Spring is provided with the spring urceolus outward, the bottom of Compress Spring is by the spring block location be sleeved on lower main axis, and spring block is held out against by the end of lower contact.
2. a kind of hydraulic sliding sleeve according to claim 1, it is characterized in that: the sheath that also has been threaded of the external thread part in upper urceolus upper end, also accompany mud-scraping ring between the inner peripheral surface of sheath and the outer circumference surface of upper main shaft, the inner surface of mud-scraping ring matches with the external surface of upper main shaft.
3. a kind of hydraulic sliding sleeve according to claim 1, it is characterized in that: in upper hydraulic cavities, upper spindle thread is connected with the retaining ring, the retaining ring is 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 inclined-plane.
4. a kind of hydraulic sliding sleeve according to claim 1, it is characterized in that, the middle part inwall of described upper urceolus, on the seal combination of middle part, position is provided with depressed part, the upper and lower two ends of depressed part internal diameter is less than projection, 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 upper surface of the projection 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110192360 CN102278091B (en) | 2011-07-11 | 2011-07-11 | Hydraulic sliding sleeve |
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| Publication Number | Publication Date |
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| CN102278091A CN102278091A (en) | 2011-12-14 |
| CN102278091B true CN102278091B (en) | 2013-12-18 |
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| CN 201110192360 Active CN102278091B (en) | 2011-07-11 | 2011-07-11 | Hydraulic sliding sleeve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790524B (en) * | 2014-01-21 | 2015-09-23 | 中国海洋石油总公司 | Surge pressure controls pipe nipple |
| CN103883737B (en) * | 2014-03-28 | 2016-04-13 | 上海德干重型机器有限公司 | Seal arrangement |
| CN105952418B (en) * | 2016-06-29 | 2019-02-15 | 西南石油大学 | It is a kind of for reservoir reconstruction, production monitoring and the Intellectual valve of control and its construction method |
| 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 |
Citations (5)
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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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030024706A1 (en) * | 2000-12-14 | 2003-02-06 | Allamon Jerry P. | Downhole surge reduction method and apparatus |
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2011
- 2011-07-11 CN CN 201110192360 patent/CN102278091B/en active Active
Patent Citations (5)
| 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 |
| 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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| CN102278091A (en) | 2011-12-14 |
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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. |