CN107091065A - Exempt to bore ball seat - Google Patents
Exempt to bore ball seat Download PDFInfo
- Publication number
- CN107091065A CN107091065A CN201710401615.9A CN201710401615A CN107091065A CN 107091065 A CN107091065 A CN 107091065A CN 201710401615 A CN201710401615 A CN 201710401615A CN 107091065 A CN107091065 A CN 107091065A
- Authority
- CN
- China
- Prior art keywords
- ball seat
- seat body
- ratchet
- annular groove
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000003801 milling Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract description 3
- 210000000664 rectum Anatomy 0.000 abstract description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Check Valves (AREA)
Abstract
It is that one kind is exempted to bore ball seat, including ball seat body, ratchet set, shear pin and lower contact, the lower outside of ball seat body and the upper inner of lower contact are fixedly installed togather the present invention relates to cementing tool technical field；Ratchet set is provided with ball seat body, ratchet set is included in the pawl valve section and annulus section being sequentially distributed up and down, pawl valve section is separated to form at least two panels ratchet valve by circumferential cannelure, and the annulus section top surface of the bottom of every ratchet valve with correspondence position is fixed together；Spacing block set is respectively and fixedly provided with the outside of the upper end of every ratchet valve.Reasonable and compact in structure of the present invention, it is skillfully constructed, it can be realized by ball sealer and sealed, can also recovers normal latus rectum by pressurizeing, ensure the normal and lasting progress of subsequent operation, whole process can reduce the abrasion to internal surface of sleeve pipe without drilling milling operation, time saving and energy saving, it is convenient and swift, efficiency of construction can be effectively improved, reduces Completion cost, the potential safety hazard that reduction multiple operation is brought.
Description
Technical field
It is that one kind is exempted to bore ball seat the present invention relates to cementing tool technical field.
Background technology
In drilling liner cementing construction, when tail pipe string delivers to design attitude, it is necessary to which pitching, which builds the pressure, sits hanging hanging device, use at present
The ball seat that builds the pressure be to cover sealing with ball seat that material is made can be bored by ball sealer to build the pressure., need to be to ball seat after construction terminates
Position, which carries out milling, could form full-bore in sleeve pipe, to ensure subsequent construction.Its operation is not only wasted time and energy, also can be to sleeve pipe
Inwall causes certain abrasion, can also increase Completion cost, increases completion risk.
The content of the invention
Exempt to bore ball seat the invention provides one kind, overcome the deficiency of above-mentioned prior art, it can effectively solve existing suppress
Pressure ball seat exist build the pressure after the completion of need milling formed sleeve pipe in full-bore, waste time and energy, internal surface of sleeve pipe can be caused necessarily
Abrasion, can also increase Completion cost, the problem of increasing completion risk.
The technical scheme is that realized by following measures：One kind is exempted to bore ball seat, including ball seat body, ratchet
Set, shear pin and lower contact, the lower outside of ball seat body and the upper inner of lower contact are fixedly installed togather；Ball seat sheet
Ratchet set is provided with vivo, and ratchet set is included in the pawl valve section and annulus section being sequentially distributed up and down, and pawl valve section is by circumferentially
Cannelure be separated to form at least two panels ratchet valve, the annulus section top surface of the bottom of every ratchet valve with correspondence position is fixed on
Together；It is respectively and fixedly provided with the outside of the upper end of every ratchet valve on the inside of spacing block set, the ball seat body of correspondence spacing block set position
Provided with the first sealing ring, all ratchet valve is in impaction state by the active force of ball seat body, and makes every two adjacent spine
The adjacent surface of the adjacent surface of pawl valve and every two adjacent spacing block set is pressed together, and all spacing block set formation energy
By the full circle land for compressing the first sealing ring and ball seat body inner seal；The ball seat body of correspondence spacing block set lower position
Inner side, which is provided with, can make ratchet valve release impaction state and the first annular groove for being caught in spacing block set, the first annular groove lower position of correspondence
The lower end inside of ball seat body be more than provided with internal diameter under the second annular groove of the first annular groove, correspondence ball seat body lower position and connect
The inside middle portion of head is provided with the internal diameter inner groove equal with the second annular groove, and annulus section is located in inner groove and both pass through shear pin
Nail is fixedly installed togather.
Here is the further optimization and/or improvements to foregoing invention technical scheme：
The outside of above-mentioned ball seat body lower part and the upper inner of lower contact can be connected through a screw thread and be fixedly installed togather, correspondence
O-ring seal is provided between the ball seat body of both threaded connection place lower positions and lower contact.
It is above-mentioned that at least one check pin can be circumferentially installed between ball seat body and lower contact.
The installation annular groove of inner groove can be more than provided with internal diameter on the inside of the lower contact of above-mentioned correspondence inner groove upper position, in peace
Provided with the retainer ring being sleeved on the outside of annulus section in dress annular groove, the top surface of retainer ring is pushed against on ball seat body bottom surface, retainer ring
Bottom surface be pushed against install annular groove bottom land, annulus section and retainer ring between be fixedly installed togather by shear pin.
It can be provided with interior chamfering, the upper end outer of every piece of spacing block set and be all provided with the upper end of above-mentioned every ratchet valve
There is outer chamfering, the upper surface of the first annular groove is in up-narrow and down-wide frustum face.
The upper inner of above-mentioned ball seat body can be provided with internal thread, and the lower outside of lower contact is provided with external screw thread.
Reasonable and compact in structure of the present invention, is skillfully constructed, and is coordinated by the ratchet valve under ball sealer and impaction state and realized
Sealing, while spacing block set is sealed by being realized on the inside of the first sealing ring and ball seat body, is achieved in building the pressure, is easy to hanger
Extension, the normal construction of back-off are sat, shear pin is cut by persistent pressure afterwards, normal latus rectum can be recovered, it is ensured that subsequent operation
It is normal and lasting progress, whole process can reduce the abrasion to internal surface of sleeve pipe without drilling milling operation, time saving and energy saving, side
Just it is quick, efficiency of construction can be effectively improved, reduces Completion cost, the potential safety hazard that reduction multiple operation is brought.
Brief description of the drawings
Accompanying drawing 1 is the main view half section structural representation of preferred embodiment in the operating condition.
Ratchet set comes downwards to the main view that spacing block set is caught in the first annular groove after accompanying drawing 2 is cut for shear pin in accompanying drawing 1
Half section structural representation.
Accompanying drawing 3 is enclosed on the dimensional structure diagram under ratchet valve releasing impaction state for ratchet in accompanying drawing 1.
Coding in accompanying drawing is respectively：1 is ball seat body, and 2 be annulus section, and 3 be ratchet valve, and 4 be spacing block set, and 5 be the
One sealing ring, 6 be the first annular groove, and 7 be the second annular groove, and 8 be ball sealer, and 9 be shear pin, and 10 be lower contact, and 11 be internal thread,
12 be lower external screw thread, and 13 be check pin, and 14 be retainer ring, and 15 be inner groove, and 16 be O-ring seal.
Embodiment
The present invention is not limited by following embodiments, can technique according to the invention scheme and actual conditions it is specific to determine
Embodiment.
In the present invention, for the ease of description, the description of the relative position relation of each part is according to Figure of description 1
Butut mode be described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is the Butut according to Figure of description
Direction is determined.
With reference to embodiment and accompanying drawing, the invention will be further described：
As shown in accompanying drawing 1,2,3, this, which exempts from brill ball seat, includes ball seat body 1, ratchet set, shear pin 9 and lower contact 10, ball seat sheet
The lower outside of body 1 and the upper inner of lower contact 10 are fixedly installed togather；Ratchet set, ratchet set are provided with ball seat body 1
Including the pawl valve section and annulus section 2 being sequentially distributed above and below, pawl valve section is separated to form at least by circumferential cannelure
Two panels ratchet valve 3, the bottom of every ratchet valve 3 is fixed together with annulus 2 top surfaces of section of correspondence position；Every ratchet valve 3
Upper end on the outside of be respectively and fixedly provided with spacing block set 4, the inner side of ball seat body 1 of correspondence spacing block set 4 position is provided with the first sealing
Circle 5, all ratchet valve 3 is in impaction state by the active force of ball seat body 1, and makes the phase of every two adjacent ratchet valves 3
The adjacent surface of proximal surface and every two adjacent spacing block set 4 is pressed together, and all formation of spacing block set 4 can pass through pressure
The full circle land of tight first sealing ring 5 and the inner seal of ball seat body 1；In the ball seat body 1 of the correspondence lower position of spacing block set 4
Side, which is provided with, can make ratchet valve 3 release impaction state and the first annular groove 6 for being caught in spacing block set 4,6 times orientation of the first annular groove of correspondence
The lower end inside for the ball seat body 1 put is more than the second annular groove 7 of the first annular groove 6, the lower position of correspondence ball seat body 1 provided with internal diameter
Lower contact 10 inside middle portion provided with the internal diameter inner groove 15 equal with the second annular groove 7, inner groove 15 is collectively referred to as with the second annular groove 7
For sliding annular groove, annulus section 2 is located in sliding annular groove and annulus section 2 passes through with the ball seat body 1 of correspondence position or lower contact 10
Shear pin 9 is fixedly installed togather.
According to demand, spacing block set 4 can be come downwards to the displacement referred to as stroke distances being caught in the first annular groove 6, annulus section 2
The distance between bottom to bottom of inner groove 15 is referred to as spacing distance, and stroke distances should be not more than spacing distance；In addition, when spacing
When projection 4 is caught in the first annular groove 6, all ratchet valves 3 release impaction state, and the maximum inner diameter that now pawl valve section is formed should
The no more than internal diameter of ball seat body 1, while the internal diameter of annulus section 2 should also be not more than the internal diameter of ball seat body 1；Annulus section 2 also may be used
It is fixedly installed togather in the second annular groove 7 and between annulus section 2 and ball seat body 1 by shear pin 9, annulus section 2
It can be located in inner groove 15 and be fixedly installed togather between annulus section 2 and lower contact 10 by shear pin 9；Every two is adjacent
The arc length of spacing block set 4 can it is equal also, central angle corresponding to each ratchet valve 3 can it is equal also.Installing
During, inner side, outside and the longitudinal groove location that can be covered in ratchet smear metal sealing glue, can so ratchet is enclosed on ratchet
Valve 3 keeps good sealing when being in impaction state.In drilling liner cementing construction, the present invention can be connected into default pipe string
In, and deliver to predeterminated position, when need pitching build the pressure seat hanging hanging device when, ball sealer 8 can be put into, and make by sending into drilling fluid
Ball sealer 8 sets the upper inner covered in ratchet, so that fitted seal is formed between ball sealer 8 and ratchet set upper inner,
Realization builds the pressure, and can now carry out sitting hanging hanging device, and at the end of hanger sits extension, back-off construction, well head continues to build the pressure, and works as pressure
When reaching the shear pressure of shear pin 9, pin is cut, and ratchet set is descending with ball sealer 8, and spacing block set 4 is caught in the first annular groove
6, all ratchet valves 3 release impaction state, and now the remainder in ratchet set in addition to spacing block set 4 will be caught in second
In annular groove 7 and inner groove 15, recover the normal latus rectum of the present invention, ball sealer 8 will fall from ratchet set, it is ensured that cementing well
And subsequent job is normally carried out.Reasonable and compact in structure of the present invention, is skillfully constructed, by under ball sealer 8 and impaction state
Ratchet valve 3, which coordinates, realizes sealing, is sealed while spacing block set 4 is realized by the first sealing ring 5 with the inner side of ball seat body 1, thus
Realization builds the pressure, and is easy to hanger to sit extension, the normal construction of back-off, cuts shear pin 9 by persistent pressure afterwards, can recover just
Normal open footpath, it is ensured that the normal and lasting progress of subsequent operation, whole process can be reduced to internal surface of sleeve pipe without drilling milling operation
Abrasion, it is time saving and energy saving, it is convenient and swift, can effectively improve efficiency of construction, reduce Completion cost, the safety that reduction multiple operation is brought
Hidden danger.
Above-mentioned brill ball seat of exempting from can be made further optimization and/or improvements according to actual needs：
As shown in accompanying drawing 1,2,3, the outside of the bottom of ball seat body 1 and the upper inner of lower contact 10 are connected through a screw thread fixed peace
It is fitted together, O-ring seal 16 is provided between the ball seat body 1 of both threaded connection place lower positions of correspondence and lower contact 10.
It can so make easier for installation laborsaving between ball seat body 1 and lower contact 10.
As shown in accompanying drawing 1,2,3, at least one check pin is circumferentially installed between ball seat body 1 and lower contact 10
13.So it can prevent both threaded connection places from releasing.According to demand, between ball seat body 1 and lower contact 10 circumferentially
It is evenly equipped with two check pins 13.
As shown in accompanying drawing 1,2,3, the inner side of lower contact 10 of the correspondence upper position of inner groove 15 is more than inner groove provided with internal diameter
15 installation annular groove, is being installed provided with the retainer ring 14 for being sleeved on the outside of annulus section 2 in annular groove, the top surface of retainer ring 14 is pushed against
On the bottom surface of ball seat body 1, the bottom surface of retainer ring 14 is pushed against the bottom land for installing annular groove, passes through between annulus section 2 and retainer ring 14
Shear pin 9 is fixedly installed togather.The easier for installation laborsaving of ratchet set can so be made, and repeatedly weight can be enabled the invention to
Use, lower contact 10 need to only be pulled down again, new shear pin 9 is installed between annulus section 2 and retainer ring 14.According to need
Ask, shear pin 9 can be one or more.
As shown in accompanying drawing 1,2,3, interior chamfering is equipped with along place in the upper end of every ratchet valve 3, every piece of spacing block set 4 it is upper
Outer chamfering is equipped with the outer of end, the upper surface of the first annular groove 6 is in up-narrow and down-wide frustum face.The setting of interior chamfering can be to sealing
Ball 8 plays guide effect, is easy to ball sealer 8 smoothly to be sealed with pawl valve section top, makes the upper surface of the first annular groove 6 in up-narrow and down-wide
Frustum face and with outer chamfering coordinate, spacing block set 4 can be easy to accurately to be caught in the first annular groove 6 rapidly.
As shown in accompanying drawing 1,2,3, the upper inner of ball seat body 1 is provided with internal thread 11, and the lower outside of lower contact 10 is set
There is external screw thread 12.It can so be easy in the default pipe string of present invention access.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal implementation effect
Really, non-essential technical characteristic can be increased and decreased according to actual needs, to meet the demand of different situations.
Claims (10)
1. one kind is exempted to bore ball seat, it is characterised in that including ball seat body, ratchet set, shear pin and lower contact, ball seat body
Lower outside and the upper inner of lower contact are fixedly installed togather；Ratchet set is provided with ball seat body, ratchet set includes presenting
Under the pawl valve section and annulus section that are sequentially distributed, pawl valve section is separated to form at least two panels ratchet by circumferential cannelure
Valve, the bottom of every ratchet valve is fixed together with the annulus section top surface of correspondence position；On the outside of the upper end of every ratchet valve
It is fixed with the inside of spacing block set, the ball seat body of correspondence spacing block set position and is provided with the first sealing ring, all ratchet valves
It is in impaction state by the active force of ball seat body, and makes the adjacent surface and every two adjacent limit of every two adjacent ratchet valves
The adjacent surface of position projection is pressed together, and all spacing block set formation can be by compressing the first sealing ring and ball seat body
The full circle land of inner seal；Being provided with the inside of the ball seat body of correspondence spacing block set lower position can make ratchet valve release compression shape
State and the first annular groove for being caught in spacing block set, the lower end inside of the ball seat body of the first annular groove lower position of correspondence are provided with internal diameter
More than the second annular groove of the first annular groove, the inside middle portion of the lower contact of correspondence ball seat body lower position is provided with internal diameter and the second ring
The equal inner groove of groove, inner groove and the second annular groove be collectively referred to as slide annular groove, annulus section be located at sliding annular groove in and annulus section with
The ball seat body of correspondence position or lower contact are fixedly installed togather by shear pin.
2. according to claim 1 exempt to bore ball seat, it is characterised in that the outside of ball seat body lower part and the top of lower contact
Inner side, which is connected through a screw thread, to be fixedly installed togather, the ball seat body of both threaded connection place lower positions of correspondence and lower contact it
Between be provided with O-ring seal.
3. according to claim 2 exempt to bore ball seat, it is characterised in that is circumferentially installed between ball seat body and lower contact
There is at least one check pin.
4. exempting from according to claim 1 or 2 or 3 bores ball seat, it is characterised in that the lower contact of correspondence inner groove upper position
Inner side is more than the installation annular groove of inner groove provided with internal diameter, is installing provided with the retainer ring being sleeved on the outside of annulus section in annular groove, Gu
The top surface for determining ring is pushed against on ball seat body bottom surface, and the bottom surface of retainer ring is pushed against the bottom land for installing annular groove, and annulus section is with fixing
It is fixedly installed togather between ring by shear pin.
5. exempting from according to claim 1 or 2 or 3 bores ball seat, it is characterised in that be all provided with the upper end of every ratchet valve along place
Have and outer chamfering is equipped with interior chamfering, the upper end outer of every piece of spacing block set, the upper surface of the first annular groove is in up-narrow and down-wide cone
Table top.
6. it is according to claim 4 exempt from bore ball seat, it is characterised in that the upper end of every ratchet valve in along place be equipped with
Outer chamfering is equipped with angle, the upper end outer of every piece of spacing block set, the upper surface of the first annular groove is in up-narrow and down-wide frustum face.
7. exempting from according to claim 1 or 2 or 3 bores ball seat, it is characterised in that the upper inner of ball seat body is provided with interior spiral shell
Line, the lower outside of lower contact is provided with external screw thread.
8. it is according to claim 4 exempt from bore ball seat, it is characterised in that the upper inner of ball seat body be provided with internal thread, under connect
The lower outside of head is provided with external screw thread.
9. it is according to claim 5 exempt from bore ball seat, it is characterised in that the upper inner of ball seat body be provided with internal thread, under connect
The lower outside of head is provided with external screw thread.
10. according to claim 6 exempt to bore ball seat, it is characterised in that the upper inner of ball seat body is provided with internal thread, under
The lower outside of joint is provided with external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401615.9A CN107091065A (en) | 2017-05-31 | 2017-05-31 | Exempt to bore ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401615.9A CN107091065A (en) | 2017-05-31 | 2017-05-31 | Exempt to bore ball seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091065A true CN107091065A (en) | 2017-08-25 |
Family
ID=59639916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401615.9A Pending CN107091065A (en) | 2017-05-31 | 2017-05-31 | Exempt to bore ball seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091065A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482917A (en) * | 2022-01-14 | 2022-05-13 | 靖江市强林石油钻采设备制造有限公司 | Self-adaptive soluble ball seat |
| CN114575773A (en) * | 2020-12-01 | 2022-06-03 | 中国石油化工股份有限公司 | Tail pipe suspension device with top packer and tail pipe suspension assembly |
| CN116006127A (en) * | 2021-10-22 | 2023-04-25 | 中国石油天然气集团有限公司 | Multiple switch circulation plugging device |
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|---|---|---|---|---|
| US4089548A (en) * | 1976-10-12 | 1978-05-16 | The Dow Chemical Company | Hydraulic releasing tool with plug |
| US20020162661A1 (en) * | 2001-05-03 | 2002-11-07 | Krauss Christiaan D. | Delayed opening ball seat |
| CN202370473U (en) * | 2011-12-15 | 2012-08-08 | 中国石油集团西部钻探工程有限公司 | Full-size ball seat |
| US20130168099A1 (en) * | 2010-09-22 | 2013-07-04 | Packers Plus Energy Services Inc. | Wellbore frac tool with inflow control |
| CN103321608A (en) * | 2013-07-09 | 2013-09-25 | 中国石油集团渤海钻探工程有限公司 | Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out |
| CN103452542A (en) * | 2012-05-28 | 2013-12-18 | 中国石油天然气股份有限公司 | Switchable fracturing sliding sleeve |
| CN203412563U (en) * | 2013-07-31 | 2014-01-29 | 中国石油集团西部钻探工程有限公司 | Drillable slide sleeve |
| CN203626706U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Well control set packing pipe nipple |
| CN203867502U (en) * | 2014-01-29 | 2014-10-08 | 中国石油集团西部钻探工程有限公司 | Hydraulic releasing tool |
| CN104632169A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-stage fracturing sand blasting sliding sleeve and process method |
| CN106194110A (en) * | 2016-09-23 | 2016-12-07 | 中国石油集团西部钻探工程有限公司 | Spin Control stepless pitching fracturing sliding bush |
| CN206903626U (en) * | 2017-05-31 | 2018-01-19 | 中国石油集团西部钻探工程有限公司 | Exempt to bore ball seat |
-
2017
- 2017-05-31 CN CN201710401615.9A patent/CN107091065A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089548A (en) * | 1976-10-12 | 1978-05-16 | The Dow Chemical Company | Hydraulic releasing tool with plug |
| US20020162661A1 (en) * | 2001-05-03 | 2002-11-07 | Krauss Christiaan D. | Delayed opening ball seat |
| US20130168099A1 (en) * | 2010-09-22 | 2013-07-04 | Packers Plus Energy Services Inc. | Wellbore frac tool with inflow control |
| CN202370473U (en) * | 2011-12-15 | 2012-08-08 | 中国石油集团西部钻探工程有限公司 | Full-size ball seat |
| CN103452542A (en) * | 2012-05-28 | 2013-12-18 | 中国石油天然气股份有限公司 | Switchable fracturing sliding sleeve |
| CN103321608A (en) * | 2013-07-09 | 2013-09-25 | 中国石油集团渤海钻探工程有限公司 | Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out |
| CN203412563U (en) * | 2013-07-31 | 2014-01-29 | 中国石油集团西部钻探工程有限公司 | Drillable slide sleeve |
| CN104632169A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-stage fracturing sand blasting sliding sleeve and process method |
| CN203626706U (en) * | 2013-12-10 | 2014-06-04 | 中国石油集团西部钻探工程有限公司 | Well control set packing pipe nipple |
| CN203867502U (en) * | 2014-01-29 | 2014-10-08 | 中国石油集团西部钻探工程有限公司 | Hydraulic releasing tool |
| CN106194110A (en) * | 2016-09-23 | 2016-12-07 | 中国石油集团西部钻探工程有限公司 | Spin Control stepless pitching fracturing sliding bush |
| CN206903626U (en) * | 2017-05-31 | 2018-01-19 | 中国石油集团西部钻探工程有限公司 | Exempt to bore ball seat |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575773A (en) * | 2020-12-01 | 2022-06-03 | 中国石油化工股份有限公司 | Tail pipe suspension device with top packer and tail pipe suspension assembly |
| CN114575773B (en) * | 2020-12-01 | 2024-08-16 | 中国石油化工股份有限公司 | Tail pipe suspension device with top packer and tail pipe suspension assembly |
| CN116006127A (en) * | 2021-10-22 | 2023-04-25 | 中国石油天然气集团有限公司 | Multiple switch circulation plugging device |
| CN116006127B (en) * | 2021-10-22 | 2024-04-26 | 中国石油天然气集团有限公司 | Multiple switch circulation plugging device |
| CN114482917A (en) * | 2022-01-14 | 2022-05-13 | 靖江市强林石油钻采设备制造有限公司 | Self-adaptive soluble ball seat |
| CN114482917B (en) * | 2022-01-14 | 2022-10-14 | 靖江市强林石油钻采设备制造有限公司 | Self-adaptive soluble ball seat |
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