CN109707357B - Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function - Google Patents
Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function Download PDFInfo
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- CN109707357B CN109707357B CN201711008098.5A CN201711008098A CN109707357B CN 109707357 B CN109707357 B CN 109707357B CN 201711008098 A CN201711008098 A CN 201711008098A CN 109707357 B CN109707357 B CN 109707357B
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- fracturing
- sliding sleeve
- hydraulic cylinder
- elastic
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims abstract 2
- 239000000806 elastomer Substances 0.000 claims abstract 2
- 230000007704 transition Effects 0.000 claims description 19
- 229920001967 Metal rubber Polymers 0.000 claims description 13
- 210000000078 claw Anatomy 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- Joints Allowing Movement (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a fracturing sliding sleeve with large drift diameter and intelligent ball throwing, which comprises the following components: the upper joint, adapter sleeve, sliding sleeve body and the lower joint that connect gradually, its characterized in that, fracturing sliding sleeve still contains: the hydraulic cylinder comprises a hydraulic cylinder sleeve, a hydraulic cylinder, an elastomer and an elastic sealing piece; the hydraulic cylinder is sleeved in the upper joint; the hydraulic cylinder is arranged in the hydraulic cylinder sleeve; the elastic body is arranged in the hydraulic cylinder; the elastic sealing piece is sleeved on the elastic body.
Description
Technical Field
The invention relates to a fracturing sliding sleeve, in particular to a large-drift-diameter intelligent ball-throwing fracturing sliding sleeve for petroleum and natural gas exploitation equipment.
Background
In the petroleum and natural gas exploitation process, the fracturing operation is a very effective yield increasing method, and particularly, the layering transformation technology has become an important means for increasing yield of low-permeability oil and gas reservoirs, and the sliding sleeve type staged fracturing technology is an important means for exploiting unconventional oil and gas resources and is widely applied to fracturing yield increasing transformation of shale gas, low-permeability producing layers, vertical wells of thin oil layers, directional wells and horizontal wells.
Conventional sliding sleeves include ball-throw type sliding sleeves, hydraulic sliding sleeves, and mechanical switch sliding sleeves.
The ball-throwing type sliding sleeve is usually matched with an open hole packer for use, and the working principle is that the ball is thrown at a wellhead, and the ball reaches the position of a sliding sleeve ball seat to form a seal with the sliding sleeve ball seat. When the pressing pressure reaches a set value, the pin is sheared, the sliding sleeve moves to expose the fracturing through hole, and a fracturing channel is established. However, the sizes of the sliding sleeves and the balls at all levels are different, so that the number of fracturing stages is limited, and after fracturing is completed, a drilling tool is needed to be put into the sliding sleeve to drill out the ball seat of the sliding sleeve, so that the working period and the working cost are increased.
The hydraulic sliding sleeve is usually arranged at the lowest stage of the segmented fracturing string, and the working principle of the hydraulic sliding sleeve is that the hydraulic sliding sleeve is continuously pressurized after all open hole packers are set. And opening the sliding sleeve after the pressure reaches the opening pressure of the hydraulic sliding sleeve, and then carrying out fracturing construction. The hydraulic sliding sleeve can only be used for one stage independently, and the hydraulic sliding sleeve is matched with the ball-throwing type sliding sleeve to finish multistage fracturing.
The mechanical switch sliding sleeve needs a switch tool to be put into a well together with a fracturing string, and is characterized in that the mechanical switch sliding sleeve is opened and closed through the switch tool, and a pressure-holding ball is not required to be thrown, so that the requirements on the performance and stability of the switch tool are high.
Therefore, there is an urgent need to develop a fracturing sliding sleeve with unlimited number of fracturing layers.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a large-drift-diameter intelligent ball-throwing fracturing sliding sleeve, which comprises: the upper joint, adapter sleeve, sliding sleeve body and the lower joint that connect gradually, wherein, fracturing sliding sleeve still contains:
the liquid cylinder sleeve is arranged in the upper joint;
the hydraulic cylinder is arranged in the hydraulic cylinder sleeve;
the elastic body is arranged in the hydraulic cylinder;
and the elastic sealing piece is sleeved on the elastic body.
The fracturing sliding sleeve of the above-mentioned, wherein still contains:
the transition sleeve is arranged in the upper joint, and one end of the transition sleeve is connected with the hydraulic cylinder;
the elastic piece is sleeved on the transition sleeve, one end of the elastic piece abuts against the transition sleeve, and the other end of the elastic piece abuts against the connecting sleeve.
The fracturing sliding sleeve of the above-mentioned, wherein still contains:
the track pipe is positioned in the connecting sleeve, the other part of the track pipe is positioned in the sliding sleeve, one end of the track pipe is connected with the other end of the transition sleeve, and the hydraulic cylinder drives the elastic body, the transition sleeve and the track pipe to move along the axial direction;
the swivel is sleeved on the track pipe and positioned between the connecting sleeve and the sliding sleeve body;
and the guide pin penetrates through the swivel and is connected to the track pipe.
The fracturing sliding sleeve further comprises an opening sleeve, the opening sleeve is arranged in the sliding sleeve body, and one end of the opening sleeve is spaced from the track pipe.
The fracturing sliding sleeve comprises a lower joint, a sliding sleeve body and an elastic sealing seat, wherein the lower joint is connected with the sliding sleeve body, the elastic sealing seat is arranged between the opening sleeve and the lower joint, one end of the elastic sealing seat is connected with the lower joint, and the opening sleeve is sleeved with the elastic sealing seat after moving axially.
The fracturing sliding sleeve comprises a plurality of long tracks and a plurality of short tracks, wherein the long tracks and the short tracks are arranged on the outer wall of the track pipe along the circumferential direction, and the long tracks and the short tracks are alternately arranged and mutually communicated.
The fracturing sliding sleeve is characterized in that a plurality of clamping claws are arranged at the other end of the elastic sealing seat.
The fracturing sliding sleeve is characterized in that a step limiting part is arranged on the inner wall of the sliding sleeve body, and the opening sleeve is propped against the step limiting part.
The fracturing sliding sleeve further comprises a stop structure, the stop structure is arranged on the inner wall of the sliding sleeve body, and when the opening sleeve moves axially, the elastic sealing seat is sleeved, and then the opening sleeve stops moving reversely.
The fracturing sliding sleeve is characterized in that the elastic body is a metal elastic body.
The invention aims at the prior art and has the following effects:
1. the method is suitable for casing well completion and open hole well completion, is not limited by well type, has strong adaptability, and gives more choices to engineers;
2. compared with the quick drilling bridge plug technology, the high-efficiency fracturing is realized without a pump plug, a perforation and a drilling plug, and the fracturing cost is reduced;
3. compared with the conventional open hole packer combined sliding sleeve technology, the fracturing efficiency is guaranteed, meanwhile, the drift diameter is not reduced, the integrity of a shaft is guaranteed, and meanwhile, the number of fracturing stages is not limited theoretically;
4. the intelligent ball throwing counting, engineers can set a plurality of stages of counting according to the requirement, one ball can be used for one stage of counting to open one or more sliding sleeves at a time, and fracturing can be freely matched according to the requirement;
5. the full diameter after pressing is beneficial to subsequent production, well repair, secondary fracturing and other operations, and the service life of a single well is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present utility fracturing sleeve;
FIG. 2 is an enlarged view of a portion of FIG. 1A;
FIG. 3 is an enlarged view of a portion of B in FIG. 1;
FIG. 4 is a schematic view of the opening sleeve of FIG. 1 when not in operation;
FIG. 5 is a schematic illustration of the fracturing ball of FIG. 1 in operation through an open sheath;
fig. 6 is a schematic view showing a state of opening the jacket in the reverse row of fig. 1.
Detailed Description
The detailed description and technical descriptions of the present invention will now be further described with reference to a preferred embodiment, but should not be construed as limiting the practice of the invention.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a fracturing sliding sleeve of the present invention; FIG. 2 is an enlarged view of a portion of FIG. 1A; fig. 3 is a partial enlarged view of B in fig. 1. As shown in fig. 1-3, the fracturing sliding sleeve of the present invention comprises an upper joint 1, a connecting sleeve 9, a sliding sleeve body 10 and a lower joint 15 which are sequentially connected, and the fracturing sliding sleeve further comprises: a cylinder sleeve 2, a cylinder 3, an elastic sealing element 4 and an elastic body 5; the liquid cylinder sleeve 2 is arranged in the upper joint 1; the hydraulic cylinder 3 is arranged in the hydraulic cylinder sleeve 2; the elastic body 5 is arranged in the hydraulic cylinder 3; the elastic sealing element 4 is sleeved on the elastic body 5. In the present embodiment, the elastic body 5 is a metal elastic body, but the invention is not limited thereto.
Further, the fracturing slide sleeve further comprises: a transition sleeve 6 and an elastic member 7; the transition sleeve 6 is arranged in the upper joint 1, and one end of the transition sleeve 6 is connected with the hydraulic cylinder 3; the elastic member 7 is sleeved on the transition sleeve 6, one end of the elastic member 7 abuts against the transition sleeve 6, and the other end of the elastic member 7 abuts against the connecting sleeve 9, wherein the elastic member is taken as a spring in the preferred embodiment, but the invention is not limited thereto.
Still further, the fracturing sleeve further comprises: a rail pipe 8, a swivel 11 and a guide pin 12; one part of the track pipe 8 is positioned in the connecting sleeve 9, the other part of the track pipe 8 is positioned in the sliding sleeve body 10, one end of the track pipe 8 is connected with the other end of the transition sleeve 6, and the hydraulic cylinder 3 is hydraulically driven after the elastic body 5 is in place, so that the transition sleeve 6 and the track pipe 8 simultaneously move along the axial direction; the swivel 11 is sleeved on the track pipe 8 and is positioned between the connecting sleeve 9 and the sliding sleeve body 10; the guide pin 12 penetrates the swivel 11 and is connected to the rail pipe 8. Wherein, a plurality of long tracks C1 and a plurality of short tracks C2 are arranged on the outer wall of the track pipe 8 along the circumferential direction, and the long tracks C1 and the short tracks C2 are alternately arranged and mutually communicated.
Furthermore, the fracturing sliding sleeve further comprises an opening sleeve 13, an elastic sealing seat 14 and a stop structure 16, which are arranged in the sliding sleeve body 10, wherein one end of the opening sleeve 13 is spaced at the other end of the track pipe 8; the lower joint 15 is connected with the sliding sleeve body 10, the elastic sealing seat 14 is arranged between the opening sleeve 13 and the lower joint 15, one end of the elastic sealing seat 14 is connected with the lower joint 15, and the opening sleeve 13 can axially move to cover the elastic sealing seat 14; the other end of the elastic sealing seat 14 is provided with a plurality of clamping claws 141, and the opening sleeve 13 is buckled with the clamping claws 141; the inner wall of the sliding sleeve body 10 is provided with a step limiting part 101, and the opening sleeve 13 is propped against the step limiting part 101; the stop structure 16 is mounted on the inner wall of the sliding sleeve body 10, and stops the reverse movement of the opening sleeve 13 after the opening sleeve 13 is sleeved on the elastic sealing seat 14 after moving along the axial direction.
In this embodiment, the hydraulic cylinder 3, the elastic seal 4 and the elastic body 5 constitute a soft seal seat assembly; the soft sealing seat assembly, the elastic piece 7, the track pipe 8 (a long track C1 and a short track C2 which are communicated are arranged outside the pipe), the swivel 11 and the guide pin 12 form an intelligent counting mechanism; the opening sleeve 13 and the elastic sealing seat 14 form a sliding sleeve mechanism; after ball injection, the fracturing ball reaches the soft sealing seat assembly to form a temporary piston, the force is transmitted to the track pipe 8 under the action of pressure, the track pipe 8 moves on the short track C2 once, the track pipe 8 drives the guide pin 12, the guide pin 12 drives the swivel 11 to rotate, and then the elastic piece 7 drives the soft sealing seat assembly to reset. When the fracturing ball is put into the well, the well is rotated once, when the well rotates to a designated position, the track pipe 8 enters the long track C1, the track pipe 8 transmits force to the sliding sleeve mechanism, the opening sleeve 13 is pushed to be opened, the opening sleeve 13 moves onto the elastic sealing seat 14 after descending, the elastic sealing seat is forced to shrink, the inner diameter of the elastic sealing seat is reduced, the fracturing ball is located at the position to seal, and at the moment, fracturing operation can be carried out. If the sliding sleeves are required to be opened by throwing balls at one time at the position or a plurality of adjacent positions, the elastic sealing seats are not arranged in the sliding sleeves in front of the position or the plurality of adjacent positions, the elastic sealing seats are only arranged on the last sliding sleeve, the balls can smoothly open the sliding sleeves and are located on the last sliding sleeve, and one or a plurality of positions can be pressed by carrying out fracturing operation. Therefore, the sliding sleeves can be opened after being put into the Nth ball, and a plurality of sliding sleeves can be installed at each stage and opened at the same time, so that the fracturing sliding sleeve is not limited by the number of layers of the fracturing layer; meanwhile, the sliding sleeves are opened through intelligent counting, and the inner diameters of the sliding sleeves can be the same, so that the sliding sleeves can keep the largest diameter, and the later operation is not influenced.
Referring to fig. 4-6, fig. 4 is a schematic view illustrating the case of fig. 1 opened when not in operation; FIG. 5 is a schematic illustration of the fracturing ball of FIG. 1 in operation through an open sheath; fig. 6 is a schematic view showing the state of opening the sleeve when the ball moves to the upper stage of the sliding sleeve during reverse drainage in fig. 1, and the working process of the fracturing sliding sleeve of the present invention is specifically described below with reference to fig. 1-6. It should be noted that the following specific values are merely illustrative of the working procedure of the present invention, and the present invention is not limited thereto.
The minimum passage of the fracturing sliding sleeve has a flexible inner diameter of 110 mm and a rigid inner diameter of 118 mm when the fracturing sliding sleeve is not thrown. When the low fracturing ball is put into operation and reaches the position of 110 mm in the inner diameter of the soft sealing ring, the fracturing ball is temporarily blocked by the metal elastomer 5, the pressure is suppressed, and the track pipe 8 moves under the action of the metal elastomer 5 and the hydraulic cylinder 3. When the pressure difference exceeds 3MPa, the fracturing balls pass through the metal elastomer 5 and through the elastic seal seat 14. The rail tube 8 returns to the counting position under the action of the spring. When the fracturing ball is thrown for the nth time, an intelligent counter (not shown) reaches a set value, a plurality of guide pins 12 enter a long track of the track pipe 8 at the same time, so that the track pipe 8 can move for a long distance to push the opening sleeve 13 to move downwards, and the fracturing holes are opened. The lower end of the opening sleeve 13 is sleeved on the elastic sealing seat 14, so that the elastic grabbing of the elastic sealing seat 14 is forced to be rigid, when the pressure difference exceeds 3MPa, the fracturing ball falls onto the elastic sealing seat 14 through the metal elastomer 5, and the fracturing ball is sealed with the elastic sealing seat 14. The sliding sleeves with the same counting can be opened or a plurality of sliding sleeves (a plurality of sliding sleeves are opened after being arranged through N balls, the last sliding sleeve is provided with the hard sealing seat 14, the elastic sealing seat 14 is not arranged on the first sliding sleeve, the opening sleeve 13 is not influenced to be opened, the balls smoothly pass through and are located on the sliding sleeve at the lowest end), the stratum is suppressed, the fracturing balls are always in a low position under the action of pressure difference when the elastic sealing seat 14 is suppressed. When all the layers are cracked, the wellhead pressure-releasing stratum is reversely arranged, the ball moves to the lower part of the elastic sealing seat 14 of the last sliding sleeve, after the opening sleeve 13 moves upwards for a certain distance under the action of downward pressure, the stopping mechanism 16 stops the opening sleeve 13, the elastic sealing seat (14) opens, and the fracturing ball passes through the elastic sealing seat 14 and the metal elastomer 5 upwards and reversely arranged to the wellhead to be captured by a ball catcher (not shown).
The fracturing ball reaches the flexible inner diameter of the metal elastomer 5, the fracturing ball is blocked temporarily, and when a certain pressure is applied to the upper end of the fracturing ball, the fracturing ball can pass through the metal elastomer 5. The pressure of the ball through the metal elastomer 5 can thus be varied by adjusting the metal elastomer 5 and the elastic seal 4. The fracturing ball reaches the flexible inner diameter of the metal elastomer 5, and before the fracturing ball passes through the metal elastomer 5, the elastic sealing piece 4 and the fracturing ball form a temporary piston, and the hydraulic cylinder 3 can provide axial thrust when the fracturing ball is pressed, but after the fracturing ball passes through, the piston effect disappears.
A plurality of long tracks C1 and a plurality of short tracks C2 are arranged on the outer wall of the track pipe 8 along the circumferential direction, the long tracks C1 and the short tracks C2 are alternately arranged and are mutually communicated, a counter is formed by the long tracks C1, the short tracks C2, the swivel 11 and the guide pin 12 work on a groove of the track pipe 8, N balls of the counter are set before the well is closed, and then the ball seat is opened. The working ball reaches the pressure holding of the metal elastic body 5, the temporary piston provides axial thrust, and when the track pipe 8 moves axially, the rotating ring 11 is forced to rotate by a certain angle under the action of the guide pin 12 and the rotating ring 11. The thrust provided by the temporary piston is limited by the short track C2 and cannot directly act on the opening sleeve 13, and the opening sleeve 13 cannot be opened. After the fracturing ball passes through the metal elastomer 5, the axial thrust provided by the hydraulic cylinder 3 disappears, and the track pipe 8 returns to the counting working position under the action of the spring 7. After the N balls are put into the counter, when the counter returns to the 0 number position, the temporary piston works in the long track C1, the thrust provided by the hydraulic cylinder 3 can act on the opening sleeve 13, and the opening sleeve 13 is opened.
In summary, the fracturing sliding sleeve of the invention has the following advantages:
1. the method is suitable for casing well completion and open hole well completion, is not limited by well type, has strong adaptability, and gives more choices to engineers;
2. compared with the quick drilling bridge plug technology, the high-efficiency fracturing is realized without a pump plug, a perforation and a drilling plug, and the fracturing cost is reduced;
3. compared with the conventional open hole packer combined sliding sleeve technology, the fracturing efficiency is guaranteed, meanwhile, the drift diameter is not reduced, the integrity of a shaft is guaranteed, and meanwhile, the fracturing progression is not limited;
4. the intelligent ball throwing counting, engineers can set a plurality of stages of counting according to the requirement, one ball can be used for one stage of counting to open one or more sliding sleeves at a time, and fracturing can be freely matched according to the requirement;
5. the full diameter after pressing is beneficial to subsequent production, well repair, secondary fracturing and other operations, and the service life of a single well is prolonged.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, since various modifications and variations can be made in the practice of the invention by those skilled in the art without departing from the spirit or essential characteristics thereof, and it is intended that all such modifications and variations fall within the scope of the appended claims.
Claims (5)
1. A fracturing sliding sleeve for large-drift diameter intelligent ball throwing, comprising: the fracturing sliding sleeve comprises an upper joint, a connecting sleeve, a sliding sleeve body and a lower joint which are connected in sequence, and is characterized in that the fracturing sliding sleeve further comprises:
the liquid cylinder sleeve is arranged in the upper joint;
the hydraulic cylinder is arranged in the hydraulic cylinder sleeve;
the elastic body is arranged in the hydraulic cylinder;
the elastic sealing piece is sleeved on the elastic body;
the transition sleeve is arranged in the upper joint, and one end of the transition sleeve is connected with the hydraulic cylinder;
the elastic piece is sleeved on the transition sleeve, one end of the elastic piece abuts against the transition sleeve, and the other end of the elastic piece abuts against the connecting sleeve;
the track pipe is positioned in the connecting sleeve, the other part of the track pipe is positioned in the sliding sleeve, one end of the track pipe is connected with the other end of the transition sleeve, and the hydraulic cylinder drives the elastic body, the transition sleeve and the track pipe to move along the axial direction;
the swivel is sleeved on the track pipe and positioned between the connecting sleeve and the sliding sleeve body;
the guide pin penetrates through the swivel and is connected to the track pipe; and
the opening sleeve is arranged in the sliding sleeve body, and one end of the opening sleeve is spaced from the track pipe;
the fracturing sliding sleeve further comprises an elastic sealing seat, wherein the elastic sealing seat is arranged between the opening sleeve and the lower joint, one end of the elastic sealing seat is connected with the lower joint, and the opening sleeve is sleeved on the elastic sealing seat after moving along the axial direction;
a plurality of long tracks and a plurality of short tracks are arranged on the outer wall of the track pipe along the circumferential direction, and the long tracks and the short tracks are alternately arranged and mutually communicated.
2. The fracturing slide sleeve of claim 1, wherein the other end of the elastic sealing seat is provided with a plurality of claws.
3. The fracturing slide sleeve of claim 1, wherein a step limit is further provided on an inner wall of the slide sleeve body, and the opening sleeve is disposed against the step limit.
4. The fracturing sleeve of claim 1, further comprising a stop structure mounted on an inner wall of said sleeve body for stopping reverse movement of said opening sleeve after said opening sleeve is axially moved to engage said elastomeric seal seat.
5. The fracturing sleeve of claim 1, wherein said elastomer is a metal elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008098.5A CN109707357B (en) | 2017-10-25 | 2017-10-25 | Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711008098.5A CN109707357B (en) | 2017-10-25 | 2017-10-25 | Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707357A CN109707357A (en) | 2019-05-03 |
| CN109707357B true CN109707357B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711008098.5A Active CN109707357B (en) | 2017-10-25 | 2017-10-25 | Fracturing sliding sleeve with large drift diameter and intelligent ball throwing function |
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| Country | Link |
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| CN (1) | CN109707357B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9706085D0 (en) * | 1996-03-22 | 1997-05-14 | Smith International | Hydraulic sliding side-door sleeve |
| CN2567338Y (en) * | 2002-08-07 | 2003-08-20 | 中国石化胜利油田有限公司采油工艺研究院 | Layer switch device |
| RU77635U1 (en) * | 2008-05-26 | 2008-10-27 | Общество с ограниченной ответственностью "Научно-производственная фирма Завод "Измерон" | DEVICE FOR OPERATION IN OPEN WELLS OF WELLS |
| CN104453824A (en) * | 2014-10-09 | 2015-03-25 | 中国石油天然气股份有限公司 | Isosphere same-diameter fracturing sliding sleeve, single-sphere fracturing sliding sleeve and isosphere same-diameter fracturing tubular column |
| CN104847325A (en) * | 2015-05-15 | 2015-08-19 | 中国海洋石油总公司 | Infinite-level sectional reconstruction sliding sleeve device triggered by machinery or hydraulic pressure |
| CN105298461A (en) * | 2015-11-03 | 2016-02-03 | 东北石油大学 | Full-bore infinite-time soluble-ball-type fracturing sliding sleeve |
| CN106640014A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Counting type infinite class multi cluster full path sectional fracturing slip sleeve |
| CN106761552A (en) * | 2017-02-20 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of switchable slider mechanism of equal diameter and its individual layer and many clusters coordinate fracturing process |
| CN207526483U (en) * | 2017-10-25 | 2018-06-22 | 思达斯易能源技术(集团)有限公司 | The fracturing sliding bush of big orifice intelligence pitching |
-
2017
- 2017-10-25 CN CN201711008098.5A patent/CN109707357B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9706085D0 (en) * | 1996-03-22 | 1997-05-14 | Smith International | Hydraulic sliding side-door sleeve |
| CN2567338Y (en) * | 2002-08-07 | 2003-08-20 | 中国石化胜利油田有限公司采油工艺研究院 | Layer switch device |
| RU77635U1 (en) * | 2008-05-26 | 2008-10-27 | Общество с ограниченной ответственностью "Научно-производственная фирма Завод "Измерон" | DEVICE FOR OPERATION IN OPEN WELLS OF WELLS |
| CN104453824A (en) * | 2014-10-09 | 2015-03-25 | 中国石油天然气股份有限公司 | Isosphere same-diameter fracturing sliding sleeve, single-sphere fracturing sliding sleeve and isosphere same-diameter fracturing tubular column |
| CN104847325A (en) * | 2015-05-15 | 2015-08-19 | 中国海洋石油总公司 | Infinite-level sectional reconstruction sliding sleeve device triggered by machinery or hydraulic pressure |
| CN106640014A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Counting type infinite class multi cluster full path sectional fracturing slip sleeve |
| CN105298461A (en) * | 2015-11-03 | 2016-02-03 | 东北石油大学 | Full-bore infinite-time soluble-ball-type fracturing sliding sleeve |
| CN106761552A (en) * | 2017-02-20 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of switchable slider mechanism of equal diameter and its individual layer and many clusters coordinate fracturing process |
| CN207526483U (en) * | 2017-10-25 | 2018-06-22 | 思达斯易能源技术(集团)有限公司 | The fracturing sliding bush of big orifice intelligence pitching |
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|---|---|
| CN109707357A (en) | 2019-05-03 |
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