CN203603869U - Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat - Google Patents
Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat Download PDFInfo
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- CN203603869U CN203603869U CN201320762154.5U CN201320762154U CN203603869U CN 203603869 U CN203603869 U CN 203603869U CN 201320762154 U CN201320762154 U CN 201320762154U CN 203603869 U CN203603869 U CN 203603869U
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- ball seat
- salvaging
- pawl
- sliding sleeve
- bullet
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- 210000000078 claw Anatomy 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims description 33
- 238000010276 construction Methods 0.000 description 5
- 210000000664 rectum Anatomy 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a multistage ball-throwing fracturing sliding sleeve capable of salvaging ball seats, which comprises a joint, a spring claw and a spring claw pipe, wherein the joint comprises an upper joint and a lower joint, the upper joint is connected with the lower joint, the upper end of the upper joint is provided with an upper positioning groove, a lower positioning groove and a side hole, and the multistage ball-throwing fracturing sliding sleeve also comprises a sliding sleeve mechanism and a salvaging ball seat mechanism, when the sliding sleeve mechanism and the salvaging ball seat mechanism move downwards to open the sliding sleeve, the spring claw gap in the sliding sleeve mechanism corresponds to the side hole, and the inside and the outside of the pipe; and two ends of the salvaging ball seat mechanism are respectively provided with a self-locking elastic claw which is matched with the salvaging ball seat mechanism in the upper stage sliding sleeve and the salvaging ball seat mechanism in the lower stage sliding sleeve and is used for salvaging the ball seat. The utility model discloses can guarantee that the lower part sliding sleeve opens in proper order through the bowling and realize fracturing acidizing operation, can once only salvage multistage sliding sleeve ball seat and ball through coiled tubing after the operation again, make intraductal acquisition drift diameter as big as possible.
Description
Technical field
The multistage pitching fracturing sliding bush that the utility model discloses a kind of ball seat salvaged for the operation of oil-gas field fracturing acidizing treatment, belongs to oil-gas field downhole operation instrument.
Background technology
At present, in horizontal well bore hole staged fracturing Acidizing Technology, the widely used pitching sliding sleeve of institute is mainly opened and is formed pressure break passage by pitching, step by step construction from bottom to top.When construction, the unlatching ball of sliding sleeve is sitting on ball seat, and most of well sliding sleeve can normally be opened, and after having constructed, ball is returned and discharged ground by discharge opeing.For example, China Patent No. " 201010216524.6 " discloses a kind of drillable ball injection sliding sleeve that is applicable to horizontal well, open day is on November 10th, 2010, it comprises piecing devices and spring claw tube structure, it is characterized in that: described piecing devices are made up of top connection and lower contact, top connection and lower contact, by being threaded, are provided with locating slot, lower locating slot and side opening in the inner circle of top connection upper end; Spring claw tube structure is made up of spring claw tube, and spring claw tube is arranged in upper and lower joint, is provided with bullet pawl in the upper end of spring claw tube, is provided with and plays pawl boss in the upper end that plays pawl.For another example, the disclosed a kind of pitching sliding sleeve of China Patent No. " 201220389703.4 ", open day is on 03 20th, 2013.The top connection of this instrument, circulation shell, lower contact are threaded in turn and follow closely fixing by anti-rotation, power transmission pipe is fixed on circulation outer casing inner wall by shear pin and seals up the opening on circulation shell, ball seat is threaded on the inwall of power transmission pipe lower end, ball seat adopts and can bore material and make, and inverted-proof ring is arranged on the lower end step of power transmission pipe and locks by inverted-proof ring interstage sleeve.
But also there is following deficiency in pitching sliding sleeve of the prior art: if gas output is less, and particularly oil well, ball is not easy to return and ejects, thereby affects construction effect.In order to ensure completion tubular column effectively unimpeded in the effect after construction and well, also need if desired to bore grinder tool by coiled tubing band the ball not returning out in tubing string and the relatively little ball seat of latus rectum are bored to mill operation, to obtain larger latus rectum, but can not salvage sliding sleeve tee after operation, be unfavorable for the lifting of Oil/gas Well output, later stage operation is also inconvenient.
Summary of the invention
The purpose of this utility model is to overcome existing pitching sliding sleeve above shortcomings, a kind of multistage pitching fracturing sliding bush of salvaging ball seat is provided, the utility model can guarantee that bottom sliding sleeve opened successively and realized fracture acidizing operation by pitching, again can be by disposable multistage sliding sleeve tee and the ball salvaged of coiled tubing after operation, make to manage the interior acquisition large latus rectum of trying one's best.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of multistage pitching fracturing sliding bush of salvaging ball seat, comprise joint, play pawl and spring claw tube, joint comprises top connection and lower contact, top connection is connected with lower contact, top connection upper end is provided with locating slot, lower locating slot and side opening, it is characterized in that: also comprise slider mechanism and salvage ball seat mechanism, when described slider mechanism and salvaging ball seat mechanism move downward for open sliding sleeve, bullet pawl gap in slider mechanism is corresponding with side opening, inside and outside pipe, gangs up; Described salvaging ball seat mechanism two ends are respectively arranged with the salvaging ball seat mechanism in salvaging ball seat mechanism and next stage sliding sleeve in upper level sliding sleeve and coordinate the self-locking bullet pawl for salvaging ball seat.
Described slider mechanism comprises the switch sleeve and the load cover that are arranged in joint, switch sleeve is fixedly connected with load cover, switch sleeve upper end is provided with the first bullet pawl, load cover is connected with joint by sliding sleeve shear pin, in the time that the bullet pawl boss on the first bullet pawl moves to lower locating slot from upper locating slot, the bullet pawl gap of the first bullet pawl is corresponding with side opening, inside and outside pipe, gangs up.
Described salvaging ball seat mechanism comprises that playing pawl stops lock tube, connect inner sleeve, spring claw tube, salvage shear pin, ball seat, salvage and play pawl head, playing pawl stops lock tube and is connected inner sleeve connection, bullet pawl stops lock tube upper end and is provided with the second bullet pawl, spring claw tube is between load cover and connection inner sleeve, spring claw tube is by salvaging shear pin and being connected inner sleeve connection, spring claw tube upper end is provided with the 3rd and plays pawl, the 3rd plays in the spacing locating slot putting at load of pawl, spring claw tube lower end plays pawl head with salvaging and is connected, salvaging bullet pawl head is connected with ball seat, salvage bullet pawl head lower end and be provided with the 4th bullet pawl, second plays pawl coordinates self-locking with the 4th bullet pawl of the salvaging bullet pawl head lower end of upper level sliding sleeve, the 4th plays pawl coordinates self-locking with the second bullet pawl that the bullet pawl of next stage sliding sleeve stops lock tube upper end.
Described switch sleeve and load cover are threaded connection, and connection of thread is provided with sealing ring, and is formed with locating slot after being threaded, and the 3rd bullet pawl is spacing in locating slot.
Described top connection upper end is connected with top pipe string, and top connection lower end and lower contact upper end are threaded connection, and fix by hold-down screw, and lower contact lower end is connected with bottom pipe string.
On the outer wall of described switch sleeve, be provided with the sealing ring coordinating with top connection inwall.
On described load cover outer wall, be provided with keyway, in keyway, be provided with the anti-turn screw coordinating with joint.
Described connection inner sleeve lower end and ball seat upper end are slidably matched, and the place of being slidably matched is provided with sealing ring sealing.
Described bullet pawl stops and on lock tube outer wall, is provided with the sealing ring coordinating with switch sleeve inwall, plays pawl and stops and on lock tube inwall, be provided with and be connected the sealing ring that outer wall of inside race coordinates.
Described bullet pawl stops lock tube and is connected inner sleeve and is threaded connection, and spring claw tube lower end plays pawl head thread and is connected with salvaging, and salvages bullet pawl head and is threaded with ball seat.
Employing the utility model has the advantage of:
One, the utility model also comprises slider mechanism and salvages ball seat mechanism, and when described slider mechanism and salvaging ball seat mechanism move downward for open sliding sleeve, the bullet pawl gap in slider mechanism is corresponding with side opening, inside and outside pipe, gangs up; Described salvaging ball seat mechanism two ends are respectively arranged with the salvaging ball seat mechanism in salvaging ball seat mechanism and next stage sliding sleeve in upper level sliding sleeve and coordinate the self-locking bullet pawl for salvaging ball seat, adopt this structure, can guarantee that bottom sliding sleeve opened successively and realized fracture acidizing operation by pitching, again can be by disposable multistage sliding sleeve tee and the ball salvaged of coiled tubing after operation, make to manage the interior acquisition large latus rectum of trying one's best, be beneficial to the convenience of lifting and the later stage operation of Oil/gas Well output.
Two, in the utility model, described slider mechanism comprises the switch sleeve and the load cover that are arranged in joint, switch sleeve is fixedly connected with load cover, switch sleeve upper end is provided with the first bullet pawl, load cover is connected with joint by sliding sleeve shear pin, in the time that the bullet pawl boss on the first bullet pawl moves to lower locating slot from upper locating slot, the bullet pawl gap of the first bullet pawl is corresponding with side opening, inside and outside pipe, gang up, adopt this structure, in the time that slider mechanism moves downward, can drive salvaging ball seat mechanism to move simultaneously, and play the structure of pawl by switch sleeve and first, than the structure that plays pawl by spring claw tube and first, more reliable in the time of open sliding sleeve, and switch sleeve and load cover and salvaging ball seat mechanism to be connected matching relationship tightr.
Three, in the utility model, described salvaging ball seat mechanism comprises that playing pawl stops lock tube, connect inner sleeve, spring claw tube, salvage shear pin, ball seat, salvage and play pawl head, playing pawl stops lock tube and is connected inner sleeve connection, bullet pawl stops lock tube upper end and is provided with the second bullet pawl, spring claw tube is between load cover and connection inner sleeve, spring claw tube is by salvaging shear pin and being connected inner sleeve connection, spring claw tube upper end is provided with the 3rd and plays pawl, the 3rd plays in the spacing locating slot putting at load of pawl, spring claw tube lower end plays pawl head with salvaging and is connected, salvaging bullet pawl head is connected with ball seat, salvage bullet pawl head lower end and be provided with the 4th bullet pawl, second plays pawl coordinates self-locking with the 4th bullet pawl of the salvaging bullet pawl head lower end of upper level sliding sleeve, the 4th plays pawl coordinates self-locking with the second bullet pawl that the bullet pawl of next stage sliding sleeve stops lock tube upper end, adopt this structure, finally can realize the salvaging that a time running string can complete multistage sliding sleeve, and salvage in ball seat process and can judge that whether salvaging is successful by coiled tubing tension variations.
Four, in the utility model, described switch sleeve and load cover are threaded connection, connection of thread is provided with sealing ring, and after being threaded, be formed with locating slot, the 3rd bullet pawl is spacing in locating slot, and adopting is threaded has not only guaranteed with sealing ring the reliability that is connected and seals, and is convenient to connect and dismounting, after being threaded, be formed with locating slot, make the 3rd bullet pawl spacing more accurate.
Five, in the utility model, described top connection upper end is connected with top pipe string, top connection lower end and lower contact upper end are threaded connection, and fix by hold-down screw, lower contact lower end is connected with bottom pipe string, it is reliable that this structure connects upper and lower joint, connects respectively with upper, lower tube series winding, realized the salvaging of multistage sliding sleeve.
Six, in the utility model, on the outer wall of described switch sleeve, be provided with the sealing ring coordinating with top connection inwall, guaranteed the sealing reliability of switch sleeve and top connection.
Seven, in the utility model, on described load cover outer wall, be provided with keyway, be provided with the anti-turn screw coordinating with joint in keyway, this structure prevents from making relatively rotating of load cover and joint.
Eight, in the utility model, described connection inner sleeve lower end and ball seat upper end are slidably matched, and the place of being slidably matched is provided with sealing ring sealing, make to connect inner sleeve lower end with sliding mutually in ball seat upper end, and sealing while having guaranteed again mutual slip by sealing ring.
Nine, in the utility model, described bullet pawl stops and on lock tube outer wall, is provided with the sealing ring coordinating with switch sleeve inwall, guarantee to play pawl and stopped the sealing reliability between lock tube and switch sleeve, play pawl and stop the sealing ring that is provided with and is connected outer wall of inside race cooperation on lock tube inwall, guaranteed that bullet pawl stops lock tube and the sealing reliability that is connected inner sleeve.
Ten, in the utility model, described bullet pawl stops lock tube and is connected inner sleeve and is threaded connection, and spring claw tube lower end plays pawl head thread and is connected with salvaging, and salvages bullet pawl head and is threaded with ball seat, and this structure has guaranteed the detachability of each parts.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation
In figure, be labeled as: 1, top connection, 2, sealing ring, 3, switch sleeve, 4, play pawl and stop lock tube, 5, connect inner sleeve, 6, load cover, 7, sliding sleeve shear pin, 8, spring claw tube, 9, salvage shear pin, 10, anti-turn screw, 11, ball seat, 12, hold-down screw, 13, salvage and play pawl head, 14, lower contact, 15, open ball, 16, side opening, 17, first play pawl, 18, second play pawl, 19, the 3rd play pawl, and 20, the 4th play pawl.
The specific embodiment
A kind of multistage pitching fracturing sliding bush of salvaging ball seat, comprise joint, play pawl and spring claw tube, joint comprises top connection 1 and lower contact 14, top connection 1 is connected with lower contact 14, top connection 1 upper end is provided with locating slot, lower locating slot and side opening 16, and it also comprises slider mechanism and salvages ball seat mechanism, when described slider mechanism and salvaging ball seat mechanism move downward for open sliding sleeve, bullet pawl gap in slider mechanism is corresponding with side opening 16, inside and outside pipe, gangs up; Described salvaging ball seat mechanism two ends are respectively arranged with the salvaging ball seat mechanism in salvaging ball seat mechanism and next stage sliding sleeve in upper level sliding sleeve and coordinate the self-locking bullet pawl for salvaging ball seat.
In the present embodiment, described slider mechanism comprises the switch sleeve 3 and the load cover 6 that are arranged in joint, switch sleeve 3 is fixedly connected with load cover 6, switch sleeve 3 upper ends are provided with the first bullet pawl 17, load cover 6 is connected with joint by sliding sleeve shear pin 7, in the time that the bullet pawl boss on the first bullet pawl 17 moves to lower locating slot from upper locating slot, the bullet pawl gap of the first bullet pawl 17 is corresponding with side opening 16, inside and outside pipe, gangs up.
In the present embodiment, described salvaging ball seat mechanism comprises that playing pawl stops lock tube 4, connect inner sleeve 5, spring claw tube 8, salvage shear pin 9, ball seat 11, salvage and play pawl head 13, playing pawl stops lock tube 4 and is connected inner sleeve 5 and connects, bullet pawl stops lock tube 4 upper ends and is provided with the second bullet pawl 18, spring claw tube 8 is between load cover 3 and connection inner sleeve 5, spring claw tube 8 is by salvaging shear pin 9 and being connected inner sleeve 5 and connecting, spring claw tube 8 upper ends are provided with the 3rd and play pawl 19, the 3rd plays in the spacing locating slot on load cover 6 of pawl 19, spring claw tube 8 lower ends play pawl head 13 with salvaging and are connected, salvaging bullet pawl head 13 is connected with ball seat 11, salvage bullet pawl head 13 lower ends and be provided with the 4th bullet pawl 20, second plays pawl 18 coordinates self-locking with the 4th bullet pawl of the salvaging bullet pawl head lower end of upper level sliding sleeve, the 4th plays pawl 20 coordinates self-locking with the second bullet pawl that the bullet pawl of next stage sliding sleeve stops lock tube upper end.
In the present embodiment, described switch sleeve 3 and load cover 6 are threaded connection, and connection of thread is provided with sealing ring, and is formed with locating slot after being threaded, and the 3rd bullet pawl 19 is spacing in locating slot.
In the present embodiment, described top connection 1 upper end is connected with top pipe string, and top connection 1 lower end and lower contact 14 upper ends are threaded connection, and fix by hold-down screw, and lower contact 14 lower ends are connected with bottom pipe string.
In the present embodiment, on the outer wall of described switch sleeve 3, be provided with the sealing ring coordinating with top connection 1 inwall.
In the present embodiment, described load overlaps on 6 outer walls and is provided with keyway, is provided with the anti-turn screw 10 coordinating with joint in keyway.
In the present embodiment, described connection inner sleeve 5 lower ends and ball seat 11 upper ends are slidably matched, and the place of being slidably matched is provided with sealing ring sealing.
In the present embodiment, described bullet pawl stops and on lock tube 4 outer walls, is provided with the sealing ring coordinating with switch sleeve 3 inwalls, plays pawl and stops and on lock tube 4 inwalls, be provided with and be connected the sealing ring that inner sleeve 5 outer walls coordinate.
In the present embodiment, described bullet pawl stops lock tube 4 and is connected inner sleeve 5 and is threaded connection, and spring claw tube 8 lower ends play pawl head 13 and are threaded with salvaging, and salvages to play pawl head 13 and be threaded with ball seat 11.
Embodiment 2
The present embodiment is by reference to the accompanying drawings to describing.As shown in Figure 1, the utility model is by joint, slider mechanism with can salvage ball seat mechanism and form.
Joint comprises top connection 1 and lower contact 14, and the upper end of top connection 1 lower end and lower contact 14 is threaded connection, and for fixing needs, is provided with hold-down screw 12, and top connection 1 upper end is connected with top pipe string, and lower contact 14 lower ends are connected with bottom pipe string.
Slider mechanism comprises sealing ring 2, switch sleeve 3, load cover 6, sliding sleeve shear pin 7, anti-turn screw 10, switch sleeve 3 and load cover 6 are threaded connection, for the needs of anti-rotation, be provided with anti-turn screw 10 and slide in the keyway of load cover 6, switch sleeve 3 upper ends are provided with the first bullet pawl 17.
Can salvage ball seat mechanism and comprise and play that pawl stops lock tube 4, connects inner sleeve 5, spring claw tube 8, salvages shear pin 9, ball seat 11, salvage and play pawl head 13, play pawl and stop lock tube 4 and be connected inner sleeve 5 and be threaded connection; Spring claw tube 8 upper ends are provided with the 3rd and play pawl 19, and spring claw tube 8 lower ends are threaded connection with salvaging bullet pawl head 13 and ball seat 11, and connecting inner sleeve 5 lower ends and ball seat 11 upper ends can slide mutually, have sealing ring sealing.Playing pawl, to stop lock tube 4 upper ends be the second bullet pawl 18, and salvaging and playing pawl head 13 lower ends is the 4th to play pawl 20, and can be in actual use insert and realize self-locking and be connected with upper and lower level sliding sleeve respectively.
When site operation uses, can salvage ball seat pitching sliding sleeve and be lowered into design attitude together with other downhole tool by design of string pipe requirement, need to open sliding sleeve time, drop into and open ball 15, open ball 15 and be sitting in ball seat 11 tops, in pipe, build the pressure, sliding sleeve shear pin 7 is cut off, slider mechanism with can salvage ball seat mechanism entirety and move down, bullet pawl boss locating slot from top connection 1 that switch sleeve 3 tops first play pawl moves to lower locating slot, be stuck in lower locating slot, the bullet pawl gap of the first bullet pawl 17 is corresponding with the side opening 16 in top connection 1, inside and outside pipe, gang up, sliding sleeve is opened complete, can carry out separate stratum fracfturing acidizing treatment.
After each layer of construction finishes, can unlatching balls 15 at different levels be returned and drain into well head and reclaim by the row's of returning mode, if can not the row of returning or do not carry out flowback procedure, also can directly carry out sliding sleeve fishing.
While salvaging ball seat, play pawl head 13 by connecting successively from top to bottom to salvage, centralizer, give up, coiled tubing, be lowered to coiled tubing to well inner sliding sleeve position, press down tubing string, make the 4th bullet pawl 20 of salvaging bullet pawl head 13 lower ends stop the second bullet pawl also self-locking of embedding mutually of lock tube 4 upper ends with the bullet pawl in next stage sliding sleeve, then on, carry coiled tubing, cut off and salvage shear pin 9, change and can judge that salvaging shear pin 9 has cut off by suspending weight, can salvage ball seat mechanism holds, now the 3rd of spring claw tube 8 upper ends the bullet pawl 19 has inside contracted withdrawal, lost efficacy with the sealing that is connected inner sleeve 5 in ball seat 11 tops.No matter open ball 15 whether still on ball seat 11, the upper and lower fluid passage of sliding sleeve is all communicated with, and fishing tool tubing string can continue to carry out direct circulation.Now as without salvaging subordinate sliding sleeve tee, can directly trip out coiled tubing, salvage subordinate's ball seat as need and can continue to be lowered to coiled tubing, can salvage ball seat mechanism by entirety by slider mechanism endoporus and arrive next stage sliding sleeve position, play pawl head 13 owing to can salvaging ball seat mechanism lower end for salvaging, and now pipe inner cycle channel can carry out normal flushing circulation, so can repeat above fishing process to next stage sliding sleeve, finally realize the salvaging that a time running string can complete multistage sliding sleeve.
Claims (8)
1. can salvage the multistage pitching fracturing sliding bush of ball seat for one kind, comprise joint, play pawl and spring claw tube, joint comprises top connection (1) and lower contact (14), top connection (1) is connected with lower contact (14), top connection (1) upper end is provided with locating slot, lower locating slot and side opening (16), it is characterized in that: also comprise slider mechanism and salvage ball seat mechanism, when described slider mechanism and salvaging ball seat mechanism move downward for open sliding sleeve, bullet pawl gap in slider mechanism is corresponding with side opening (16), inside and outside pipe, gangs up; Described salvaging ball seat mechanism two ends are respectively arranged with the salvaging ball seat mechanism in salvaging ball seat mechanism and next stage sliding sleeve in upper level sliding sleeve and coordinate the self-locking bullet pawl for salvaging ball seat.
2. a kind of multistage pitching fracturing sliding bush of salvaging ball seat according to claim 1, it is characterized in that: described slider mechanism comprises the switch sleeve (3) and the load cover (6) that are arranged in joint, switch sleeve (3) is fixedly connected with load cover (6), switch sleeve (3) upper end is provided with the first bullet pawl (17), load cover (6) is connected with joint by sliding sleeve shear pin (7), in the time that the bullet pawl boss on the first bullet pawl (17) moves to lower locating slot from upper locating slot, the bullet pawl gap of the first bullet pawl (17) is corresponding with side opening (16), inside and outside pipe, gangs up.
3. a kind of multistage pitching fracturing sliding bush of salvaging ball seat according to claim 2, it is characterized in that: described salvaging ball seat mechanism comprises that playing pawl stops lock tube (4), connect inner sleeve (5), spring claw tube (8), salvage shear pin (9), ball seat (11), salvage and play pawl head (13), playing pawl stops lock tube (4) and is connected inner sleeve (5) connection, bullet pawl stops lock tube (4) upper end and is provided with the second bullet pawl (18), spring claw tube (8) is positioned at load cover (3) and connects between inner sleeve (5), spring claw tube (8) is by salvaging shear pin (9) and being connected inner sleeve (5) connection, spring claw tube (8) upper end is provided with the 3rd and plays pawl (19), the 3rd plays in the spacing locating slot on load cover (6) of pawl (19), spring claw tube (8) lower end plays pawl head (13) with salvaging and is connected, salvaging bullet pawl head (13) is connected with ball seat (11), salvage bullet pawl head (13) lower end and be provided with the 4th bullet pawl (20), second plays pawl (18) coordinates self-locking with the 4th bullet pawl of the salvaging bullet pawl head lower end of upper level sliding sleeve, the 4th plays pawl (20) coordinates self-locking with the second bullet pawl that the bullet pawl of next stage sliding sleeve stops lock tube upper end.
4. a kind of multistage pitching fracturing sliding bush of salvaging ball seat according to claim 3, it is characterized in that: described switch sleeve (3) and load cover (6) are threaded connection, connection of thread is provided with sealing ring, and after being threaded, be formed with locating slot, the 3rd bullet pawl (19) is spacing in locating slot.
5. according to a kind of multistage pitching fracturing sliding bush of salvaging ball seat described in claim 1,2,3 or 4, it is characterized in that: described top connection (1) upper end is connected with top pipe string, top connection (1) lower end and lower contact (14) upper end are threaded connection, and fix by hold-down screw, lower contact (14) lower end is connected with bottom pipe string.
6. according to a kind of multistage pitching fracturing sliding bush of salvaging ball seat described in claim 2,3 or 4, it is characterized in that: on the outer wall of described switch sleeve (3), be provided with the sealing ring coordinating with top connection (1) inwall.
7. according to a kind of multistage pitching fracturing sliding bush of salvaging ball seat described in claim 2,3 or 4, it is characterized in that: on described load cover (6) outer wall, be provided with keyway, in keyway, be provided with the anti-turn screw (10) coordinating with joint.
8. according to a kind of multistage pitching fracturing sliding bush of salvaging ball seat described in claim 3 or 4, it is characterized in that: described connection inner sleeve (5) lower end and ball seat (11) upper end are slidably matched, the place of being slidably matched is provided with sealing ring sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762154.5U CN203603869U (en) | 2013-11-28 | 2013-11-28 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762154.5U CN203603869U (en) | 2013-11-28 | 2013-11-28 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203603869U true CN203603869U (en) | 2014-05-21 |
Family
ID=50716546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762154.5U Expired - Lifetime CN203603869U (en) | 2013-11-28 | 2013-11-28 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203603869U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590800A (en) * | 2013-11-28 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| WO2016161904A1 (en) * | 2015-04-09 | 2016-10-13 | 中国石油集团西部钻探工程有限公司 | Ball-throwing sliding sleeve having removable ball seat |
| CN104453824B (en) * | 2014-10-09 | 2017-02-08 | 中国石油天然气股份有限公司 | Equal ball and same diameter fracturing sleeve, single ball fracturing sleeve and equal ball and same diameter fracturing string |
| WO2017124977A1 (en) * | 2016-01-20 | 2017-07-27 | 中国石油化工股份有限公司 | Tool for opening sliding sleeve |
-
2013
- 2013-11-28 CN CN201320762154.5U patent/CN203603869U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590800A (en) * | 2013-11-28 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
| CN103590800B (en) * | 2013-11-28 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司 | Multistage ball-throwing fracturing sliding sleeve capable of fishing ball seat |
| CN104453824B (en) * | 2014-10-09 | 2017-02-08 | 中国石油天然气股份有限公司 | Equal ball and same diameter fracturing sleeve, single ball fracturing sleeve and equal ball and same diameter fracturing string |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| WO2016161904A1 (en) * | 2015-04-09 | 2016-10-13 | 中国石油集团西部钻探工程有限公司 | Ball-throwing sliding sleeve having removable ball seat |
| US10494901B2 (en) | 2015-04-09 | 2019-12-03 | Cnpc Xibu Drilling Engineering Company Limited | Ball-dropping sliding sleeve with a removable ball seat |
| WO2017124977A1 (en) * | 2016-01-20 | 2017-07-27 | 中国石油化工股份有限公司 | Tool for opening sliding sleeve |
| RU2733580C2 (en) * | 2016-01-20 | 2020-10-05 | Чайна Петролеум Энд Кемикал Корпорейшн | Sliding coupling opening tool |
| US11248444B2 (en) | 2016-01-20 | 2022-02-15 | China Petroleum & Chemical Corporation | Tool for opening sliding sleeve |
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Effective date of registration: 20200922 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. |
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