CN204357411U - Sliding sleeve of bushing cement paste spacer assembly - Google Patents
Sliding sleeve of bushing cement paste spacer assembly Download PDFInfo
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- CN204357411U CN204357411U CN201420762979.1U CN201420762979U CN204357411U CN 204357411 U CN204357411 U CN 204357411U CN 201420762979 U CN201420762979 U CN 201420762979U CN 204357411 U CN204357411 U CN 204357411U
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- sliding sleeve
- spray tank
- movable sliding
- bushing
- cement paste
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Abstract
The utility model discloses a kind of sliding sleeve of bushing cement paste spacer assembly, relate to oil-gas field downhole operation tools manufacturing technology field, comprise top connection, body, movable sliding sleeve, multistage ball seat, control shear pin and lower contact, top connection and lower contact are connected to the upper and lower of body by screw thread correspondence, through spray tank is had in the middle part of body, movable sliding sleeve is arranged on the body interior at spray tank place, multistage ball seat is arranged on the inside of movable sliding sleeve, movable sliding sleeve is connected on body by controlling shear pin, fit clearance repack with grease between movable sliding sleeve and body, also isolated protective layer is coated with at the external surface of spray tank.It is simple that the utility model has structure, easy to operate, is segmented into power high.
Description
Technical field
The utility model relates to oil-gas field downhole operation tools manufacturing technology field, exactly relates to a kind of sliding sleeve of bushing cement paste spacer assembly.
Background technology
Sliding sleeve of bushing separate stratum fracfturing Acidizing Technology, be well cementation and fracture acidizing technology basis on combine sliding sleeve of bushing formed multilayer staged fracturing completion technique, this technology can utilize well cementation sliding sleeve to be optionally placed on oil reservoir position, sliding sleeve is opened by rear utilization of the having cemented the well ball that builds the pressure, and then carries out fracture acidizing operation with same one-trip string.This well cementation sliding sleeve enters with under sleeve pipe one, and without the need to perforation, without the need to extra packer card layer, fracture acidizing operation completes for one time continuously, has saved a large amount of drilling times and cost.In fracture acidizing has constructed rear sleeve, maintain latus rectum necessarily, facilitate later workover treatment.
Publication number is 202544829U, and publication date is that the Chinese patent literature on November 21st, 2012 discloses a kind of sliding sleeve of bushing, and it comprises: upper pilot head, top connection, pressure guiding joint, protective sleeve, transition joint, shear pin, upper urceolus, reducing sliding bush, lower urceolus, piston, interior pipe, lower contact and lower pilot head, between described top connection and described pressure guiding joint, between described pressure guiding joint and described transition joint, between described transition joint and described upper urceolus, between described upper urceolus and described lower urceolus, and be all threaded connection between described lower urceolus and described lower contact, described upper pilot head is threaded connection in described top connection, described lower pilot head is threaded connection in described lower contact, wherein, described transition joint is provided with the sandblasting hole of transition joint, described protective sleeve is enclosed between described upper urceolus and described pressure guiding joint, be used for protecting the sandblasting hole of described transition joint, described reducing sliding bush is cylindrical shape, the top barrel of described reducing sliding bush has the sandblasting hole of reducing sliding bush, described reducing sliding bush bottom is provided with multiple elastic claw, described reducing sliding bush is connected on upper urceolus by described shear pin, described reducing sliding bush blocks the sandblasting hole of described transition joint simultaneously, described interior pipe is threaded connection in described lower contact, plunger shaft is formed between described interior pipe and described lower urceolus, described plunger shaft is built with described piston, during work, after described reducing sliding bush is descending, align with the sandblasting hole of described transition joint in the sandblasting hole of reducing sliding bush, and form pressure break passage, multiple elastic claw radial contraction of described reducing sliding bush, its inner closed becomes ball seat.
At present, the sliding sleeve of bushing being representative with above-mentioned prior art, repack with grease in its spray tank, spray tank annular space is outside exposed.After sliding sleeve of bushing enters well, its spray tank directly contacts with cement paste with mud, and the lubricating grease of filling in spray tank plays certain buffer action to mud and cement paste.But sliding sleeve of bushing enters in well process to be affected by fluid power excitement, washing away of mud and cement paste is subject to when circulation and cementing operation, lubricating grease in lubricating grease in spray tank and sliding sleeve of bushing body and movable sliding sleeve gap is easy to be washed, when cementing operation cement paste runs to sliding sleeve of bushing annular space, cement paste is easy to enter into the body of sliding sleeve of bushing and the gap of movable sliding sleeve, after cement slurry sets, produce very large adhesion, increase activity sliding sleeve tensile force, even makes movable sliding sleeve cannot open at all.So during sliding sleeve of bushing is constructed at the scene, often occur the situation of point segment fault, according to statistics, current sliding sleeve of bushing is segmented into power and generally only has 70%.Sliding sleeve of bushing, once point segment fault, both affected the duration, caused again a lot of disposal cost.
Summary of the invention
The utility model is intended to for the defect existing for above-mentioned prior art and deficiency, provides a kind of sliding sleeve of bushing cement paste spacer assembly, and it is simple that the utility model has structure, easy to operate, is segmented into power high.
The utility model realizes by adopting following technical proposals:
A kind of sliding sleeve of bushing cement paste spacer assembly; comprise top connection, body, movable sliding sleeve, multistage ball seat, control shear pin and lower contact; it is characterized in that: top connection and lower contact are connected to the upper and lower of body by screw thread correspondence; through spray tank is had in the middle part of body; movable sliding sleeve is arranged on the body interior at spray tank place; multistage ball seat is arranged on the inside of movable sliding sleeve, and movable sliding sleeve is connected on body by controlling shear pin, is also coated with isolated protective layer at the external surface of spray tank.
Body in described spray tank and have fit clearance between movable sliding sleeve, lubricating grease is filled in fit clearance.
Described isolated protective layer is that glass fiber reinforced epoxy resin composite material is made, and is solidificated in the external surface of the spray tank on body.
Described lubricating grease refers to that high temperature resistant height glues lubricating grease, the high temperature resistant lubricating grease of series that such as Run Li company produces.
Described spray tank is spirality, circle or bar shaped.
Described multistage ball seat coordinates with the unlatching ball of sliding sleeve of bushing, realizes building the pressure unlatching sliding sleeve of bushing.
Described isolated protective layer, when sliding sleeve open build the pressure in pipe time, just isolated protective layer can be punctured at lower pressure.
Compared with prior art, the beneficial effect that reaches of the utility model is as follows:
This sliding sleeve of bushing cement paste spacer assembly can prevent cement paste from entering the gap between the movable sliding sleeve of sliding sleeve of bushing and body from sliding sleeve of bushing is inside and outside and solidifies in gap, avoid movable sliding sleeve dead, effective guarantee activity sliding sleeve energy smooth opening, that improves sliding sleeve of bushing is segmented into power, significant.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is the structural representation of the present utility model being coated with isolated protective layer;
Fig. 2 is that spray tank offers position view.
Mark in figure:
Top connection 1, body 2, movable sliding sleeve 3, multistage ball seat 4, control shear pin 5, lower contact 6, isolated protective layer 7, spiral spray groove 8.
Detailed description of the invention
Embodiment 1
With reference to Figure of description, the utility model comprises top connection 1, body 2, movable sliding sleeve 3, multistage ball seat 4, control shear pin 5, lower contact 6, isolated protective layer 7, spiral sandblasting groove 8 and high temperature resistant height and glues lubricating grease etc.It is characterized in that top connection 1 and lower contact 6 are threaded connection in the upper and lower of body 2, the middle part of body 2 has spiral spray groove, described movable sliding sleeve 3 is arranged on the inside of spiral spray groove 8 on body 2, described multistage ball seat 4 is arranged on the inside of movable sliding sleeve 3, and described movable sliding sleeve 3 is connected on body 2 by controlling shear pin 5.Described high temperature resistant height glues lubricating grease and is filled in the fit clearance 9 of spiral spray groove 8 and body 2 and movable sliding sleeve 3.Described isolated protective layer 7 is positioned at the external surface of the spiral spray groove 8 of body 2.Described isolated protective layer, after body machine completes, adopts glass fiber and resin to mix by a certain percentage, also can be other material, be solidificated in the external surface of the spiral spray groove on body.Described isolated protective layer, when sliding sleeve open build the pressure in pipe time, just isolated protective layer can be punctured at lower pressure.
Embodiment 2
First this sliding sleeve of bushing and required kit and sleeve pipe to be connected in rear lower going-into-well and to cement the well; high temperature resistant height glues lubricating grease and isolated protective layer 7 and stops mud and cement paste to enter fit clearance 9 between the body 2 of sliding sleeve of bushing and movable sliding sleeve 3, avoids the sticky card of cement paste and dead movable sliding sleeve 3.During fracture acidizing, pitching, to build the pressure, cut off and control shear pin 5, movable sliding sleeve 3 is descending, opens spiral spray groove 8 and isolated protective layer 7, can carry out fracture acidizing operation.
Claims (4)
1. a sliding sleeve of bushing cement paste spacer assembly, comprise top connection (1), body (2), movable sliding sleeve (3), multistage ball seat (4), control shear pin (5) and lower contact (6), it is characterized in that: top connection (1) and lower contact (6) are connected to the upper and lower of body (2) by screw thread correspondence, body (2) middle part has through spray tank, the body (2) that movable sliding sleeve (3) is arranged on spray tank place is inner, multistage ball seat (4) is arranged on the inside of movable sliding sleeve (3), movable sliding sleeve (3) is connected on body (2) by controlling shear pin (5), isolated protective layer (7) is also coated with at the external surface of spray tank.
2. sliding sleeve of bushing cement paste spacer assembly according to claim 1, is characterized in that: have fit clearance (9) between the body (2) in described spray tank and movable sliding sleeve (3), and high temperature resistant height glues lubricating grease and is filled in fit clearance (9).
3. sliding sleeve of bushing cement paste spacer assembly according to claim 1 and 2, is characterized in that: described isolated protective layer (7) is made for glass fiber reinforced epoxy resin composite material, is solidificated in the external surface of the spray tank on body (2).
4. sliding sleeve of bushing cement paste spacer assembly according to claim 1, is characterized in that: described spray tank is spirality, circle or bar shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762979.1U CN204357411U (en) | 2014-12-08 | 2014-12-08 | Sliding sleeve of bushing cement paste spacer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762979.1U CN204357411U (en) | 2014-12-08 | 2014-12-08 | Sliding sleeve of bushing cement paste spacer assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357411U true CN204357411U (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420762979.1U Active CN204357411U (en) | 2014-12-08 | 2014-12-08 | Sliding sleeve of bushing cement paste spacer assembly |
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| CN (1) | CN204357411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929577A (en) * | 2015-06-16 | 2015-09-23 | 西安海智机电设备有限公司 | Switch type well cementation sliding sleeve |
-
2014
- 2014-12-08 CN CN201420762979.1U patent/CN204357411U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929577A (en) * | 2015-06-16 | 2015-09-23 | 西安海智机电设备有限公司 | Switch type well cementation sliding sleeve |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200921 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |