CN111779465A - Soluble fracturing ball seat - Google Patents
Soluble fracturing ball seat Download PDFInfo
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- CN111779465A CN111779465A CN202010324131.0A CN202010324131A CN111779465A CN 111779465 A CN111779465 A CN 111779465A CN 202010324131 A CN202010324131 A CN 202010324131A CN 111779465 A CN111779465 A CN 111779465A
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- slips
- slip
- ball seat
- soluble
- fracturing ball
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- 238000003780 insertion Methods 0.000 claims description 18
- 230000037431 insertion Effects 0.000 claims description 18
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000002195 soluble material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
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- 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- 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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a soluble fracturing ball seat, comprising: the radius of the middle position of the rotating body in the axial direction is larger than the radius of the two sides of the rotating body; first slips and second slips, first slips and second slips are established respectively at the both ends of rotator to under the promotion of setting instrument, drive first slips and second slips and be close to the removal each other, and when first slips and second slips moved towards the intermediate position of rotator, the rotator promoted first slips and second slips respectively and follows the radial direction grow of rotator, so that first slips and second slips respectively with oil reservoir casing's inner wall butt in order to fix a position. The soluble fracturing ball seat solves the problems of complex structure, large length, small drift diameter, high cost and the like of a soluble bridge plug in the prior art.
Description
Technical Field
The invention relates to the technical field of oilfield exploitation, in particular to a soluble fracturing ball seat.
Background
The bridge plug perforation combined operation is one of the horizontal well staged fracturing technologies commonly used at home and abroad at present, has the advantages of no limitation on the number of fracturing sections, large construction displacement, capability of realizing simultaneous reconstruction of multiple clusters and the like, and has the problems of high drilling and grinding cost, long time, large risk and the like of the pressed bridge plug. Therefore, research tests of the soluble bridge plug are successively carried out at home and abroad in recent years, the pressed bridge plug can be dissolved automatically without drilling and grinding, but the bridge plug has a complex structure, large length and small drift diameter, is easy to be buried by sand in the pressing and back-flowing process to cause unsatisfactory dissolving effect, and simultaneously has more materials required by processing and higher tool cost.
Disclosure of Invention
The invention mainly aims to provide a soluble fracturing ball seat to solve the problems of complex structure, large length, small drift diameter and high cost of a bridge plug in the prior art.
To achieve the above object, according to one aspect of the present invention, there is provided a soluble fracturing ball seat for use in a setting tool for use in performing a fracturing operation in an oil field, the soluble fracturing ball seat comprising: the radius of the middle position of the rotating body in the axial direction is larger than the radius of the two sides of the rotating body; first slips and second slips, first slips and second slips are established respectively at the both ends of rotator to under the promotion of setting instrument, drive first slips and second slips and be close to the removal each other, and when first slips and second slips moved towards the intermediate position of rotator, the rotator promoted first slips and second slips respectively and follows the radial direction grow of rotator, so that first slips and second slips respectively with oil reservoir casing's inner wall butt in order to fix a position.
Further, the soluble fracturing ball seat further comprises: and the elastic cylinder is arranged at one end of the first slip and is made of elastic materials.
Further, the soluble fracturing ball seat further comprises: and the support ring assembly is arranged at one end or two ends of the elastic cylinder and is used for supporting the elastic cylinder.
Further, the elastic cylinder is a rubber cylinder, and the support ring assembly comprises: the first expansion ring and the second expansion ring are respectively arranged on two sides of the rubber cylinder, and the rubber cylinder is connected with the first slip through the second expansion ring.
Further, be equipped with a plurality of expansion grooves on first expander and the second expander respectively, a plurality of expansion grooves set up along the circumference interval of first expander or second expander.
Further, the soluble fracturing ball seat further comprises: the first central pipe is arranged on one side, close to the first expansion ring, of the rubber cylinder; and the second central pipe is arranged on one side of the second slip, which is far away from the rotating body.
Furthermore, a plurality of inserting grooves are formed in the first slip, a plurality of inserting parts are formed in the second slip, and the inserting parts are arranged in one-to-one correspondence with the inserting grooves so that the inserting parts are inserted into the corresponding inserting grooves when the first slip and the second slip move close to each other.
Furthermore, a plurality of slip teeth are respectively arranged on the outer sides of the first slip and the second slip, and the slip teeth are arranged on the first slip or the second slip at intervals.
Further, the soluble fracturing ball seat further comprises a connecting assembly, and the first slip and/or the second slip are/is connected with the rotating body through the connecting assembly; wherein, the coupling assembling includes a plurality of shear force nails, and first slips and/or second slips are all connected with the rotator through the shear force nail.
Further, the soluble fracturing ball seat is made of water-soluble materials.
The soluble fracturing ball seat or the fracturing soluble ball seat applying the technical scheme of the invention is mainly applied to oil field exploitation and is arranged in an oil layer casing pipe so as to carry out primary fracturing on a horizontal well, the fracturing ball seat is matched with a setting tool for use, concretely, the fracturing ball seat comprises a rotating body and a slip assembly, the rotating body is of a hollow structure with two narrow ends and a thick middle part, the slip assembly comprises a first slip and a second slip, the first slip is arranged at the upper end of the rotating body, the second slip is arranged at the lower end of the rotating body, the first slip and the second slip are sleeved at two ends of the rotating body, when the first slip and the second slip relatively move close to each other, as the diameter of the middle position of the rotating body is larger than the inner diameters of the first slip and the second slip, the middle position of the rotating body props the first slip and the second slip, so that the first slip and the second slip are abutted against the inner wall of the oil layer casing pipe on the, thereby fix, through above-mentioned setting, can make the fracturing soluble ball seat of this application can fix the optional position in horizontal well.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a schematic structural view of an embodiment of a soluble fracturing ball seat according to the present invention prior to setting; and
fig. 2 shows a schematic structural view of an embodiment of the soluble fracturing ball seat of the present invention after setting.
Wherein the figures include the following reference numerals:
10. a rotating body; 21. a first slip; 211. inserting grooves; 22. a second slip; 23. slip teeth; 24. shear nails; 30. an elastic cylinder; 40. a support ring assembly; 41. a first expander; 42. a second expander; 43. an expansion slot; 44. a rubber cylinder seat; 51. a first center tube; 52. a second center tube.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides a soluble fracturing ball seat, which is sleeved on a setting tool and used in fracturing operation of an oil field, and referring to fig. 1 and 2, the soluble fracturing ball seat comprises: a rotating body 10, a radius of a middle position of the rotating body 10 in an axial direction is larger than radii of both sides of the rotating body 10; first slips 21 and second slips 22, first slips 21 and second slips 22 are established respectively at the both ends of rotator 10 to under the promotion of setting instrument, drive first slips 21 and second slips 22 and be close to each other and remove, and when first slips 21 and second slips 22 moved towards the intermediate position of rotator 10, rotator 10 promoted first slips 21 and second slips 22 respectively and follows the radial direction grow of rotator 10, so that first slips 21 and second slips 22 respectively with the inner wall butt of oil formation sleeve pipe in order to fix a position.
The soluble fracturing ball seat or the fracturing soluble ball seat is mainly applied to oil field exploitation and is arranged in an oil layer casing pipe so as to perform primary fracturing on a horizontal well, the fracturing ball seat is matched with a setting tool for use, concretely, the fracturing ball seat comprises a rotating body and a slip assembly, the rotating body is of a hollow structure with two narrow ends and a thick middle part, the slip assembly comprises a first slip and a second slip, the first slip is arranged at the upper end of the rotating body, the second slip is arranged at the lower end of the rotating body, the slip assembly is made of an elastic material or a flexible material, the first slip and the second slip are sleeved at two ends of the rotating body, when the first slip and the second slip relatively move close to each other, as the diameter of the middle position of the rotating body is larger than the inner diameters of the first slip and the second slip, the middle position of the rotating body props the first slip and the second slip open, so that the first slip and the second slip are abutted against the inner wall of the oil layer casing, thereby fix, through above-mentioned setting, can make the fracturing soluble ball seat of this application can fix the optional position in horizontal well. The soluble fracturing ball seat in this application is from taking anchoring and sealing device, can select the fracturing position as required after the completion of casing well cementation operation.
The dissolvable fracturing ball seat further comprises: and the elastic cylinder 30, the elastic cylinder 30 is arranged at one end of the first slip 21, and the elastic cylinder 30 is made of elastic materials.
Preferably, the elastic tube 30 in this embodiment is a rubber tube, and the rubber tube can change its shape according to the pressure inside.
The dissolvable fracturing ball seat further comprises: a support ring assembly 40, the support ring assembly 40 being disposed at one or both ends of the elastic tube 30 for supporting the elastic tube 30. The elastic cylinder 30 is a rubber cylinder, and the support ring assembly 40 includes: the first expander 41 and the second expander 42, the first expander 41 and the second expander 42 are respectively arranged at two sides of the rubber cylinder, wherein the rubber cylinder is connected with the first slip 21 through the second expander 42.
The first expanding ring and the second expanding ring in the embodiment are made of materials with certain rigidity so as to be used for supporting and positioning the rubber sleeve and prevent the rubber sleeve from deforming randomly. In this embodiment, by arranging the support ring assembly and the integral rubber sleeve structure, the sealing performance is more reliable.
The first expander 41 and the second expander 42 are respectively provided with a plurality of expansion grooves 43, and the plurality of expansion grooves 43 are provided at intervals in the circumferential direction of the first expander 41 or the second expander 42.
Preferably, a plurality of expanding grooves 43 are further provided on the outer sides of the first and second expanders in a spaced arrangement for expanding the first and second expanders.
The dissolvable fracturing ball seat further comprises: the first central pipe 51, the first central pipe 51 is arranged on one side of the rubber cylinder close to the first expansion ring 41; a second base pipe 52, the second base pipe 52 being disposed on a side of the second slip 22 remote from the rotating body 10.
The first slip 21 is provided with a plurality of inserting grooves 211, the second slip 22 is provided with a plurality of inserting parts, and the plurality of inserting parts and the plurality of inserting grooves 211 are arranged in a one-to-one correspondence manner, so that when the first slip 21 and the second slip 22 move close to each other, the inserting parts are inserted into the corresponding inserting grooves 211.
In order to reduce the overall length of the soluble fracturing ball seat after setting, preferably, two symmetrical insertion grooves 211 are formed in the first slip, the second slip comprises two insertion parts, the positions of the two insertion parts correspond to the positions of the two insertion grooves one by one, so that the insertion parts can be conveniently inserted into the insertion grooves, as shown in fig. 1, the insertion parts are inserted into the insertion grooves until the state in fig. 2 is stopped, and at the moment, the upper parts of the insertion parts are flush with the bottom of the insertion grooves 211, so that an annular plane is formed.
A plurality of slip teeth 23 are respectively arranged on the outer sides of the first slip 21 and the second slip 22, and the slip teeth 23 are arranged on the first slip 21 or the second slip 22 at intervals.
The soluble fracturing ball seat further comprises a connecting assembly, and the first slip 21 and/or the second slip 22 are/is connected with the rotating body 10 through the connecting assembly; wherein the connecting assembly comprises a plurality of shear pins 24, and the first slip 21 and/or the second slip 22 are connected with the rotating body 10 through the shear pins 24.
The soluble fracturing ball seat is made of water-soluble materials.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the fracturing soluble ball seat can be dissolved automatically after being pressed to realize the full drift diameter of a shaft, and has the characteristics of capability of setting at any position in an oil layer casing, reliable anchoring and sealing performance, large drift diameter, small length, low material cost, good dissolving effect and the like.
In order to achieve the purpose, the casing fracturing soluble ball seat provided by the invention comprises an upper central pipe, a rubber cylinder, a support ring assembly, a rubber cylinder seat 44, a first slip, a cone, a shear pin, a second slip and a second central pipe, wherein the parts except slip teeth are all processed by soluble materials and can be dissolved automatically after being pressed.
The soluble ball seat of sleeve pipe fracturing in this embodiment adopts upper and lower double slips structure, and the slip opens the slips tooth and bites into the sleeve pipe inner wall after setting, can set at the intraductal optional position of sleeve pipe, need not to preset the reducing working barrel, and upper and lower slips tooth can realize two-way anchoring simultaneously.
The soluble ball seat of sleeve pipe fracturing in this embodiment adopts integral packing element, and the packing element expands to paste at the intraductal wall of cover after the ball seat seals, can realize effectively sealing apart between the section, and sealed effectual.
The upper central tube of the sleeve fracturing soluble ball seat in the embodiment adopts a split structure, inverted tooth structures are respectively designed outside and inside the upper central tube and the lower central tube, and the upper central tube is contracted and penetrates into the inverted teeth in the lower central tube to realize a locking function after the sleeve fracturing soluble ball seat is sealed.
The central tube circumferencial direction sets up a plurality of water conservancy diversion holes under the casing fracturing soluble ball seat in this embodiment, and a plurality of water conservancy diversion holes are preferably 4 to 8, and when flowback in-process lower part fracturing ball went upward to the second central tube and blockked up central passage, liquid can get into ball seat upper portion by the water conservancy diversion hole, guarantees that liquid flow is unobstructed, does not influence oil gas well normal production, does benefit to the ball seat and dissolves fast simultaneously.
The soluble fracturing ball seat and a setting tool are connected and then are put into a well together, when setting is carried out, a driving force is generated through hydraulic pressure or gunpowder in the setting tool, so that the upper end and the lower end of the setting tool generate relative motion, the lower end of the setting tool pulls a central tube and a lower connector of the soluble fracturing ball seat to move towards the upper end, the upper end of the setting tool pushes a support ring assembly, a rubber cylinder and a first slip downwards to move towards the lower end, at the moment, a rotating body does not move, the first slip downwards moves along the inclined surface of the rotating body and outwards expands simultaneously under the action of the driving force, and finally is attached to a casing, and slip teeth on the slip are embedded into the casing under the action of force to complete fixation; and the supporting ring assembly and the rubber cylinder move downwards under the action of the pushing force and expand radially to finally fit the sleeve to complete sealing. When the preset acting force is reached, the lower end and the upper end of the setting tool are separated from the soluble fracturing ball seat, and the setting process is completed. The fracturing ball seat is in a completely set state as shown in figure 2.
The casing frac soluble ball seat in this embodiment may be used in conjunction with a conventional bridge plug setting tool.
When the sleeve fracturing soluble ball seat of this embodiment of application is worked, embolia the setting instrument respectively with parts such as first center tube, packing element, supporting ring subassembly, packing element seat, slips subassembly, second center tube, the slips subassembly includes first slips, rotator, second slips and shear force nail. After the first-stage fracturing construction of the oil-gas well is finished, the perforating gun, the setting tool and the soluble ball seat are connected through cables, the setting tool is started, the pushing cylinder pushes the first slip and the second slip downwards to cut off the shear nails and open the anchoring sleeve, the rubber cylinder expands to seal the sleeve, the perforating gun, the setting tool and the ball seat are separated, the cable, the perforating gun and the setting tool are lifted to the designed position to perform perforation, and then the soluble ball is thrown into the oil-gas well to perform second-stage fracturing construction. And repeating the steps to perform the operation of the rest layer section.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A soluble fracturing ball seat, the cover is established on setting instrument to use when the oil field carries out fracturing operation, its characterized in that, soluble fracturing ball seat includes:
a rotating body (10), wherein the radius of the middle position of the rotating body (10) in the axial direction is larger than the radius of two sides of the rotating body (10);
first slips (21) and second slips (22), first slips (21) and second slips (22) are established respectively the both ends of rotator (10), in order under the promotion of setting instrument, drive first slips (21) and second slips (22) are close to the removal each other, and first slips (21) with second slips (22) orientation rotator (10) during the intermediate position removed, rotator (10) promote respectively first slips (21) with second slips (22) are followed the radial direction grow of rotator (10), so that first slips (21) with second slips (22) respectively with the inner wall butt of oil formation sleeve pipe in order to fix a position.
2. The soluble fracturing ball seat of claim 1, further comprising:
the elastic cylinder (30), the elastic cylinder (30) is arranged at one end of the first slip (21), and the elastic cylinder (30) is made of elastic materials.
3. The soluble fracturing ball seat of claim 2, further comprising:
a support ring assembly (40), the support ring assembly (40) being disposed at one or both ends of the elastomeric cylinder (30) for supporting the elastomeric cylinder (30).
4. The soluble fracturing tee of claim 3, wherein the elastomeric sleeve (30) is a rubber sleeve, the support ring assembly (40) comprising:
the rubber tube comprises a first expanding ring (41) and a second expanding ring (42), wherein the first expanding ring (41) and the second expanding ring (42) are respectively arranged on two sides of the rubber tube, and the rubber tube is connected with the first slip (21) through the second expanding ring (42).
5. The soluble fracturing ball seat according to claim 4, wherein the first expander (41) and the second expander (42) are respectively provided with a plurality of expanding grooves (43), and the expanding grooves (43) are arranged at intervals along the circumferential direction of the first expander (41) or the second expander (42).
6. The soluble fracturing ball seat of claim 4, further comprising:
a first central tube (51), wherein the first central tube (51) is arranged on one side of the rubber sleeve close to the first expansion ring (41);
a second base pipe (52), the second base pipe (52) being disposed on a side of the second slips (22) away from the rotating body (10).
7. The soluble fracturing ball seat as claimed in claim 1, wherein a plurality of insertion grooves (211) are provided on the first slip (21), a plurality of insertion parts are provided on the second slip (22), and the plurality of insertion parts are provided in one-to-one correspondence with the plurality of insertion grooves (211) so that when the first slip (21) and the second slip (22) move close to each other, the insertion parts are inserted into the corresponding insertion grooves (211) until one end of the insertion parts is flush with the bottom of the plurality of huqin insertion grooves (211).
8. The soluble fracturing ball seat according to claim 1, characterized in that a plurality of slip teeth (23) are respectively arranged on the outer sides of the first slip (21) and the second slip (22), and the slip teeth (23) are arranged on the first slip (21) or the second slip (22) at intervals.
9. The soluble fracturing ball seat according to claim 1, further comprising a connection assembly through which the first slip (21) and/or the second slip (22) are connected with the rotating body (10);
wherein the connection assembly comprises a plurality of shear pins (24), the first slip (21) and/or the second slip (22) being connected to the rotary body (10) by the shear pins (24).
10. The soluble fracturing ball seat of claim 1, wherein the soluble fracturing ball seat is made of a water soluble material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324131.0A CN111779465A (en) | 2020-04-22 | 2020-04-22 | Soluble fracturing ball seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324131.0A CN111779465A (en) | 2020-04-22 | 2020-04-22 | Soluble fracturing ball seat |
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| CN111779465A true CN111779465A (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010324131.0A Pending CN111779465A (en) | 2020-04-22 | 2020-04-22 | Soluble fracturing ball seat |
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Cited By (1)
| 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 |
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| CN109577910A (en) * | 2019-02-01 | 2019-04-05 | 天津凯英莱克机电技术有限公司 | A kind of solvable bridge plug of all-metal pressure break |
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| CN110541684A (en) * | 2019-08-19 | 2019-12-06 | 大庆油田有限责任公司 | Bridge plug is with two-way anchoring slips module of short compression distance |
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| 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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Application publication date: 20201016 |