CN204357412U - Reclosable sliding sleeve of bushing - Google Patents
Reclosable sliding sleeve of bushing Download PDFInfo
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- CN204357412U CN204357412U CN201420767773.8U CN201420767773U CN204357412U CN 204357412 U CN204357412 U CN 204357412U CN 201420767773 U CN201420767773 U CN 201420767773U CN 204357412 U CN204357412 U CN 204357412U
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- sliding sleeve
- reclosable
- groove
- resistance groove
- ball seat
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Abstract
The utility model discloses a kind of reclosable sliding sleeve of bushing, its top connection and lower contact are fixedly connected on the two ends up and down of body respectively, body is provided with spray tank, sliding sleeve is opened rear spray tank and is formed flow channels, sliding sleeve is positioned at body inner sealing spray tank, and be connected on body by controlling pin, described sliding sleeve upper end is provided with and plays pawl hook, sliding sleeve inwall is provided with the closedown groove coordinated with closing tool, ball seat is fixedly installed on sliding sleeve bottom, chamber body is provided with and plays pawl and link up with the first resistance groove and the second resistance groove that coordinate, first resistance groove and the second resistance groove lay respectively at spray tank upper and lower, when sliding sleeve is in closed condition, plays pawl hook and be entrenched in the first resistance groove, when sliding sleeve is in opening, plays pawl hook and be entrenched in the second resistance groove.The utility model can realize storey increase design and well cementation and share sleeve pipe tubing string and carry out huge discharge, super large discharge and turn layer accurate segmentation continuously and construct.
Description
Technical field
The utility model discloses a kind of oil gas field Reclosable sliding sleeve of bushing, belong to oil-gas field downhole operation instrument.
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 segmentation tool formed multilayer staged fracturing completion technique, this technology utilizes sliding sleeve of bushing to be optionally placed on oil reservoir position, sliding sleeve opened by rear employing of the having cemented the well ball that builds the pressure, and then uses same time sleeve pipe tubing string to carry out fracture acidizing operation.Its core technology is sliding sleeve of bushing segmentation tool.In this technology, sliding sleeve of bushing, with in sleeve pipe tubing string lower going-into-well, without the need to perforation, without the need to extra packer card layer, does not need extra lower tubular column, directly uses the operation of sleeve pipe tubing string, can realize sequential production, can save a large amount of middle times.Can bore except ball seat after operation, realize sleeve pipe full-bore, be convenient to carry out later stage storey increase design operation.There is larger technical advantage.
Patent publication No. CN202064925 U discloses separate stratum fracturing well cementation sliding sleeve, and the utility model comprises top connection 1, lower contact 2, ball seat 3 and controls cover 4.Top connection 1 is connected with upper sleeve, top connection 1 is connected with lower contact 2, lower contact 2 times parts casing pipes are connected, the chamber wall that top connection 1 is connected with lower contact 2 there is outer sandblasting groove 5, ball seat 3 is fixedly connected on by controlling pin the chamber internal upper part that top connection 1 is connected with lower contact 2, ball seat 3 top wall there is sandblasting groove 6 in matching with outer sandblasting groove 5, control cover 4 and be connected to ball seat 3 lower end, control to be equipped with jump ring 7 outside cover lower end, have the draw-in groove matched with jump ring 7 in lower contact 2 bottom, jump ring 7 and the circumferential distance of draw-in groove equal outer sandblasting groove 5 and interior sandblasting groove 6 axial distance.
Patent No. ZL201220648457.X discloses multistage fracturing sliding sleeve of bushing, and the utility model comprises top connection 1, body 2, sliding sleeve 3, sandblasting groove 4, controls shear pin 5, multistage ball seat 6, lower contact 7.Top connection 1 is connected with body 2 by screw thread, and multistage ball seat 6 and sliding sleeve 3 are threaded connection, and sliding sleeve 3 is fixed on body 2 by controlling shear pin 4, and body 2 bottom is connected with lower contact 7.
Above-mentioned two kinds of sliding sleeves are all adopt sleeve pipe tubing string directly to carry out segmentation rebuilding construction, do not need to descend separately section construction tubing string, do not need packer card layer, construction turns layer does not need middle operation, can realize huge discharge, super large discharge and turn a layer accurate segmentation construction continuously, instrument is simple, easy to operate, expense is low, significant.The separate stratum fracturing well cementation sliding sleeve of patent publication No. CN202064925 U, ball seat not easily bores, and bores ball seat difficulty, not easily realizes full-bore, be difficult to carry out later stage workover treatment and further storey increase design effect, fully can not exploit petroleum resources; This separate stratum fracturing well cementation sliding sleeve does not have repetition closing function simultaneously, in the exploitation in later stage, if reservoir produces water, can not close water layer, likely affect the smooth exploitation of whole mouth well petroleum resources.The multistage fracturing sliding sleeve of bushing of patent No. ZL201220648457.X, ball seat easily bores, and can realize full-bore, is convenient to the later stage to carry out well workover and further storey increase design effect, fully can exploit petroleum resources; But this multistage fracturing sliding sleeve of bushing does not have repetition closing function yet, in the exploitation in later stage, if reservoir produces water, affect the smooth exploitation of whole mouth well petroleum resources possibly.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art existence, provides a kind of reclosable sliding sleeve of bushing.The utility model can not only realize storey increase design and well cementation and share sleeve pipe tubing string and carry out huge discharge, super large discharge and turn layer accurate segmentation continuously and construct, full-bore and selective closedown sliding sleeve of bushing can also be realized, being convenient to the later stage carries out well workover and storey increase design further, exploits petroleum resources to greatest extent.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of reclosable sliding sleeve of bushing, it is characterized in that: comprise top connection, body, sliding sleeve, ball seat, lower contact and self-locking mechanism, described top connection and lower contact are fixedly connected on the two ends up and down of body respectively, body is provided with spray tank, sliding sleeve is opened rear spray tank and is formed flow channels, sliding sleeve is positioned at body inner sealing spray tank, and be connected on body by controlling pin, described sliding sleeve upper end is provided with and plays pawl hook, sliding sleeve inwall is provided with the closedown groove coordinated with closing tool, ball seat is fixedly installed on sliding sleeve bottom, chamber body is provided with and plays pawl and link up with the first resistance groove and the second resistance groove that coordinate, first resistance groove and the second resistance groove lay respectively at spray tank upper and lower, when sliding sleeve is in closed condition, plays pawl hook and be entrenched in the first resistance groove, when sliding sleeve is in opening, plays pawl hook and be entrenched in the second resistance groove, self-locking mechanism is used for locking sliding sleeve and body when segmentation transformation sliding sleeve is opened.
Described ball seat be provided with the connection swivel nut coordinated with lower contact between body, and connect swivel nut and be connected to the lower end of sliding sleeve by ball seat.
The locking tooth that described self-locking mechanism comprises retaining ring and coordinates with retaining ring, retaining ring is arranged on sliding sleeve and connects between swivel nut, and locking tooth is arranged on the lower end of chamber body.
The internal diameter of described top connection, sliding sleeve, retaining ring, connection swivel nut, lower contact is consistent with casing inner diameter.
Described connection swivel nut lower end is provided with embedding tooth, and lower contact upper end correspondence is provided with embedding tooth.
It is adaptive that described ball seat internal diameter and sliding sleeve open ball.
Described closedown groove upper end is straight step, and lower end is that inclined-plane is excessive.
Employing the utility model has the advantage of:
1, in the utility model, do not need to descend staged fracturing tool tubing string specially, use well cementing casing pipe string, realized huge discharge, super large discharge turned a layer accurate segmentation construction continuously by the pitching sliding sleeve that builds the pressure out, operation is simple, easy to operate, reduces expenses.
2, in the utility model, sliding sleeve of bushing open after, sliding sleeve self-locking, can not because of understratum construct liquid return row or oil-gas mining cause sliding sleeve to close, this layer of oil-gas mining can not be affected.
3, in the utility model, can bore except ball seat smoothly, realize sliding sleeve of bushing full-bore, being convenient to the later stage carries out well workover and storey increase design operation further.
4, in the utility model, sliding sleeve of bushing Reclosable, in recovery process, alternative closedown water layer and useless layer, prevent water layer and useless layer from affecting the exploitation of other layer of position petroleum resources.
5, in the utility model, sliding sleeve of bushing in off position and open mode, is provided with resistance mechanism between sliding sleeve and body, can prevent from managing interior instrument and tubing string by time wiping hang and cause sliding sleeve to move, avoid sliding sleeve to open by mistake and miss closedown.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation in off position
Fig. 2 is the structural representation of the utility model in opening
Fig. 3 is the closing tool structural representation adopted in the utility model
Be labeled as in figure: 1, top connection, 2, body, 3, sliding sleeve, 4, ball seat, 5, pin is controlled, 6, retaining ring, 7, connect swivel nut, 8, lower contact, 9, play pawl hook, the 10, first resistance groove, 11, close groove, 12, the second resistance groove, 13, locking tooth, 14, closing tool body, 15, fluid cylinder, 16, play pawl cylinder, 17, back-moving spring, 18, closing tool lower contact, 19, liquid pass hole, 20, play pawl.
Detailed description of the invention
Embodiment 1
A kind of reclosable sliding sleeve of bushing, comprise top connection 1, body 2, sliding sleeve 3, ball seat 4, lower contact 8 and self-locking mechanism, described top connection 1 and lower contact 8 are fixedly connected on the two ends up and down of body 2 respectively, body 2 is provided with spray tank, sliding sleeve is opened rear spray tank and is formed flow channels, sliding sleeve 3 is positioned at body 2 inner sealing spray tank, and be connected on body 2 by controlling pin 5, described sliding sleeve 3 upper end is provided with and plays pawl hook 9, sliding sleeve 3 inwall is provided with the closedown groove 11 coordinated with closing tool, ball seat 4 is fixedly installed on sliding sleeve 3 bottom by screw thread, body 2 inner chamber is provided with and plays pawl and link up with 9 the first resistance groove 10 and the second resistance grooves 12 coordinated, first resistance groove 10 and the second resistance groove 12 lay respectively at spray tank upper and lower, when sliding sleeve is in closed condition, plays pawl hook 9 and be entrenched in the first resistance groove 10, when sliding sleeve is in opening, plays pawl hook 9 and be entrenched in the second resistance groove 12, self-locking mechanism is used for locking sliding sleeve 3 and body 2 when segmentation transformation sliding sleeve is opened.
In the present embodiment, described ball seat 4 be provided with the connection swivel nut 7 coordinated with lower contact between body 2, and connect swivel nut 7 and be connected to the lower end of sliding sleeve 3 by ball seat 4.
In the present embodiment, the locking tooth 13 that described self-locking mechanism comprises retaining ring 6 and coordinates with retaining ring 6, retaining ring 6 is arranged on sliding sleeve 3 and connects between swivel nut 7, and locking tooth 13 is arranged on the lower end of body 2 inner chamber.
In the present embodiment, the internal diameter of described top connection 1, sliding sleeve 3, retaining ring 6, connection swivel nut 7, lower contact 8 is consistent with the internal diameter of sleeve pipe.
In the present embodiment, described connection swivel nut 7 lower end is provided with embedding tooth, and lower contact 8 upper end correspondence is provided with embedding tooth.
In the present embodiment, it is adaptive that described ball seat 4 internal diameter and sliding sleeve open ball, realizes pitching and to build the pressure open sliding sleeve.Ball seat in the utility model refers to can the ball seat that removes of quick drill.
In the present embodiment, in the middle part of described sliding sleeve, the closedown groove of inwall is long recess, and closing groove upper end is straight step, and lower end is that inclined-plane is excessive, can coordinate with closing tool, realizes sliding sleeve of bushing and closes.
Embodiment 2
As a better embodiment of the present utility model: as shown in accompanying drawing 1,2, mainly comprise top connection 1, body 2, sliding sleeve 3, ball seat 4, control pin 5, retaining ring 6, connect swivel nut 7, lower contact 8 etc.Described top connection 1, body 2, lower contact 8 is threaded connection, described body 2 there is spray tank, described sliding sleeve 3 is connected to body 2 internal upper part by controlling pin 5, described connection swivel nut 7 is connected to the lower end of sliding sleeve 3 by ball seat 4, and the connection lower end of swivel nut 7 and the upper end matching design of lower contact 8 have embedding tooth, described retaining ring 6 is at sliding sleeve 3 and connect between swivel nut 7, described ball seat 4 and sliding sleeve are opened ball and are mated, described top connection 1, retaining ring 6, connect swivel nut 7, the internal diameter of lower contact 8 is consistent with casing inner diameter, described ball seat 4 is made for boring material.
The oriented overhanging bullet pawl hook 9 in upper end of described sliding sleeve 3, in original state, play pawl hook 9 and be stuck in the first resistance groove 10 on body 2 top, in opening, play pawl hook 9 to be stuck in the second resistance groove 12 in the middle part of body 2, retaining ring 6 engages self-locking with the self-locking tooth 13 of body 2 bottom.
In the middle part of described sliding sleeve 3, inwall has closedown groove 11, and closing groove 11 upper end is straight step, and lower end is that inclined-plane is excessive, and available dedicated closing tool closes sliding sleeve of bushing.
Site operation program, by design in this instrument lower going-into-well, first cementing practice Hou Ning.After cement slurry sets, from well head by pitching build the pressure open sliding sleeve carry out step by step zonal cooling construction.
Embodiment 3
As another embodiment of the present utility model, open Reclosable sliding sleeve of bushing carry out storey increase design construction time, sliding sleeve 3 is engaged by the self-locking tooth 13 of retaining ring 6 with body 2 bottom, form self-locking, can prevent understratum from returning discharge opeing and gas stream washes away ball seat 4, build the pressure ball and the sliding sleeve 3 be entrenched in ball seat 4, avoid sliding sleeve to close by mistake, ensure the smooth exploitation of this layer of petroleum resources.
Embodiment 4
As another embodiment of the present utility model, when the reservoir using the utility model to carry out storey increase design needs again to carry out storey increase design, connect swivel nut 7 and embed lower contact 8, ball seat 4 anti-rotation, can remove ball seat 4 by quick drill, realize sliding sleeve of bushing full-bore, then corresponding segmentation card layer tubing string can be entered down as required, storey increase design is carried out to specific reservoir, thus improves the rate of oil and gas recovery, improve the service efficiency of well to greatest extent.
Embodiment 5
As an embodiment more of the present utility model, after ball seat 4 brill removes, retaining ring 6 is separated with sliding sleeve 3, the self-locking releasing of sliding sleeve 3 and body 2, sliding sleeve 3 is only subject to playing the Fitting resistance of pawl hook 9 and the second resistance groove 12 of body 2 in body 2, this Fitting resistance can prevent from preferably managing interior instrument and tubing string by time hang tag and close sliding sleeve by mistake.When use Reclosable sliding sleeve of bushing carries out the transformation of segmentation first, after fully exploiting, presumable reservoir can produce water, and water yield formation position may affect the oil-gas mining of other layer of position, even can affect the oil-gas mining of whole mouth well.When this happens, can enter special closing tool down, the manipulator of closing tool is stuck in the cut out groove 11 of sliding sleeve 3 inside, above carries closing tool, when upper lifting force is greater than the Fitting resistance that sliding sleeve 3 is subject in body 2.Play pawl and link up with 9 adductions, sliding sleeve 3 is up, up when putting in place, realize selective closedown sliding sleeve of bushing, meanwhile, the bullet pawl hook 9 on sliding sleeve 3 is chimeric with the first resistance groove 10 on body 2, produce Fitting resistance, prevent from managing interior instrument and tubing string by time wipe extension and open by mistake sliding sleeve.
Embodiment 6
The present embodiment is described the closing tool adopted in the utility model.
Closing tool, as shown in Figure 3, comprise closing tool body 14, fluid cylinder 15, play pawl cylinder 16, back-moving spring 17 and closing tool lower contact 19, described fluid cylinder 15 is arranged on closing tool body 14, closing tool body 14 and fluid cylinder 15 cooperation place are provided with liquid pass hole 19, play pawl cylinder 16 be connected to fluid cylinder 15 lower end and be positioned on closing tool body 14 outer wall, described back-moving spring 17 is arranged on and plays in pawl cylinder 16, described closing tool lower contact 18 is connected to closing tool body 14 lower end, bullet pawl cylinder 16 lower end is provided with manipulator and namely plays pawl 20, bullet pawl 20 inner conical surface coordinates with closing tool lower contact 18 male cone (strobilus masculinus) makes bullet pawl 20 overhanging, be provided with at sliding sleeve inner chamber and play pawl 20 and embed the closedown groove 11 coordinated.
Liquid pass hole 19 both sides are provided with two cylinder hermetically-sealed constructions, and closing tool body 14 and fluid cylinder 15 are sealed and matched by two cylinder hermetically-sealed constructions.Described closing tool lower contact 18 is solid or hollow, when closing tool lower contact is hollow, coordinates build the pressure or form throttle orifice with the ball that builds the pressure.Described closing tool body 14 is hollow, and closing tool lower contact 18 cylindrical is provided with centering edge.The overhanging axial length of described bullet pawl is greater than 25.4mm.
The operating principle of closing tool is: adopt fluid cylinder mechanism, suppress interior pressure by circulation or pitching or directly suppress interior pressure, pressure reduction is produced inside and outside sliding sleeve of bushing closing tool, fluid cylinder is made to produce end thrust, fluid cylinder moves thus compression reseting spring, promote to play pawl overhanging along the cooperation conical surface of closing tool lower contact, on carry sliding sleeve of bushing closing tool, play pawl to slide along internal surface of sleeve pipe, and by casing coupling, then pawl is played chimeric with the closedown groove on the sliding sleeve of sliding sleeve of bushing, lead the up closedown sliding sleeve of bushing of sliding sleeve, then termination of pumping, play pawl to reclaim under the effect of back-moving spring, sliding sleeve of bushing closing tool can be tripped out smoothly, simple to operate, water layer and other useless layer can be closed, ensure the smooth exploitation of whole mouth well petroleum resources.
Claims (7)
1. a reclosable sliding sleeve of bushing, it is characterized in that: comprise top connection (1), body (2), sliding sleeve (3), ball seat (4), lower contact (8) and self-locking mechanism, described top connection (1) and lower contact (8) are fixedly connected on the two ends up and down of body (2) respectively, body (2) is provided with spray tank, sliding sleeve is opened rear spray tank and is formed flow channels, sliding sleeve (3) is positioned at body (2) inner sealing spray tank, and be connected on body by controlling pin (5), described sliding sleeve (3) upper end is provided with and plays pawl hook (9), sliding sleeve (3) inwall is provided with the closedown groove (11) coordinated with closing tool, ball seat (4) is fixedly installed on sliding sleeve (3) bottom, body (2) inner chamber is provided with and plays pawl and link up with the first resistance groove (10) and the second resistance groove (12) that (9) coordinate, first resistance groove (10) and the second resistance groove (12) lay respectively at spray tank upper and lower, when sliding sleeve is in closed condition, plays pawl hook (9) and be entrenched in the first resistance groove (10), when sliding sleeve is in opening, plays pawl hook (9) and be entrenched in the second resistance groove (12), self-locking mechanism is used for locking sliding sleeve (3) and body (2) when segmentation transformation sliding sleeve is opened.
2. reclosable sliding sleeve of bushing according to claim 1, it is characterized in that: between described ball seat (4) with body (2), be provided with the connection swivel nut (7) coordinated with lower contact (8), and connect swivel nut (7) is connected to sliding sleeve (3) lower end by ball seat (4).
3. reclosable sliding sleeve of bushing according to claim 2, it is characterized in that: the locking tooth (13) that described self-locking mechanism comprises retaining ring (6) and coordinates with retaining ring (6), retaining ring (6) is arranged on sliding sleeve (3) and connects between swivel nut (7), and locking tooth (13) is arranged on the lower end of body (2) inner chamber.
4. reclosable sliding sleeve of bushing according to claim 3, is characterized in that: the internal diameter of described top connection (1), sliding sleeve (3), retaining ring (6), connection swivel nut (7), lower contact (8) is consistent with the internal diameter of sleeve pipe.
5. the reclosable sliding sleeve of bushing according to claim 2,3 or 4, is characterized in that: described connection swivel nut (7) lower end is provided with embedding tooth, and lower contact (8) upper end correspondence is provided with embedding tooth.
6. reclosable sliding sleeve of bushing according to claim 5, is characterized in that: it is adaptive that described ball seat (4) internal diameter and sliding sleeve open ball.
7. the reclosable sliding sleeve of bushing according to claim 1,2,3,4 or 6, is characterized in that: described closedown groove (11) upper end is straight step, and lower end is that inclined-plane is excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420767773.8U CN204357412U (en) | 2014-12-09 | 2014-12-09 | Reclosable sliding sleeve of bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420767773.8U CN204357412U (en) | 2014-12-09 | 2014-12-09 | Reclosable sliding sleeve of bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204357412U true CN204357412U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420767773.8U Active CN204357412U (en) | 2014-12-09 | 2014-12-09 | Reclosable sliding sleeve of bushing |
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| CN (1) | CN204357412U (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
- 2014-12-09 CN CN201420767773.8U patent/CN204357412U/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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| TR01 | Transfer of patent right |
Effective date of registration: 20200923 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. |