CN204457594U - Bridging plug - Google Patents
Bridging plug Download PDFInfo
- Publication number
- CN204457594U CN204457594U CN201420788550.XU CN201420788550U CN204457594U CN 204457594 U CN204457594 U CN 204457594U CN 201420788550 U CN201420788550 U CN 201420788550U CN 204457594 U CN204457594 U CN 204457594U
- Authority
- CN
- China
- Prior art keywords
- slips
- bridging plug
- central tube
- support member
- slip assemblies
- 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.)
- Expired - Fee Related
Links
- 230000000712 assembly Effects 0.000 claims abstract description 43
- 238000000429 assembly Methods 0.000 claims abstract description 43
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 238000012856 packing Methods 0.000 claims description 27
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 4
- 238000003801 milling Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 7
- 239000012634 fragment Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004904 shortening Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Abstract
The utility model provides a kind of bridging plug, comprises central tube, and central tube is made up of alloy in lightweight; Wherein, the upper end of central tube is provided with tool-joint, and tool-joint is set in the outside of central tube; Bridging plug also comprises axially extended first slip assemblies along bridging plug and the second slip assemblies, and the first slip assemblies and the second slip assemblies are all set in the outside of central tube, and the first slip assemblies is connected with tool-joint.The central tube of the bridging plug in the utility model is made up of alloy in lightweight, and like this, the central tube that this material is made can drilledly with comparalive ease remove, and the brill shortening bridging plug is except the time, and the metal fragment produced during milling can return more easily and drains into ground.Remove because the bridging plug in the utility model has quick drill, effectively can shorten production time, add economic benefit.
Description
Technical field
The utility model relates to field of petroleum exploitation, in particular to a kind of bridging plug.
Background technology
Bridging plug is that downhole tool is commonly used in oil field, usually adopts cable or oil pipe mode to send into down-hole.The distinguishing feature of the oil-gas reservoirs such as fine and close oil or shale gas is that permeability is extremely low, the main exploitation method of this kind of oil-gas reservoir is in the world horizontal well drilling and the reservoir reconstruction means adopting multistage fracturing at present, and bores bridging plug multistage fracturing technology one of several main reservoir reconstruction means just soon.Fast brill bridging plug multistage fracturing technology will be bored for one time in bridging plug and perforating gun lower going-into-well cylinder soon by wireline tool, first set bridging plug, reperforation, pressure break, then this process is repeatedly repeated, until complete all predetermined interval pressure breaks, by technology that the quick drill of all bridging plugs in pit shaft removes after pressure break completes.
But, conventional bridging plug generally adopts ductile iron manufacture, during milling more than 3 hours at least consuming time, the metal fragment that milling produces is than great, not easily return and drain into ground, this characteristic makes conventional bridging plug not be suitable in horizontal well, is not particularly suitable under in horizontal well and enters multiple bridging plug, then one to pull out of hole situation about removing.
Utility model content
Main purpose of the present utility model is to provide a kind of bridging plug, to solve the problem of bridging plug of the prior art not easily milling.
To achieve these goals, the utility model provides a kind of bridging plug, comprises central tube, and central tube is made up of alloy in lightweight; Wherein, the upper end of central tube is provided with tool-joint, and tool-joint is set in the outside of central tube; Bridging plug also comprises axially extended first slip assemblies along bridging plug and the second slip assemblies, and the first slip assemblies and the second slip assemblies are all set in the outside of central tube, and the first slip assemblies is connected with tool-joint.
Further, be provided with pressure break ball container cavity in central tube, the lower end of pressure break ball container cavity is provided with support ball seat, and central tube is inserted with pressure break ball stopper bar.
Further, the first slip assemblies comprises the first slips frame and the first slips, and one end of the first slips frame is connected with tool-joint, and the other end of the first slips frame is connected with the first slips; Second slip assemblies comprises the second slips frame and the second slips, and the second slips frame is connected with central tube, and the second slips is connected with the second slips frame.
Further, bridging plug also comprises and is set in the first support member outside central tube and the second support member; One end of first support member is plugged in the inner side of the first slips, and one end of the second support member is plugged in the inner side of the second slips.
Further, one end of the inner side of insertion first slips of the first support member is tapering point, and the endoporus section be connected with the first support member of the first slips is bellmouth section; One end of the inner side of insertion second slips of the second support member is tapering point, and the endoporus section be connected with the second support member of the second slips is bellmouth section.
Further, between the first support member and the second support member, be provided with packing element, and packing element is set in the outside of central tube.
Further, the outside of the first support member and packing element is arranged with the first retaining ring, and the outside of the second support member and packing element is arranged with the second retaining ring.
Further, the second slips frame is provided with the axially extended Access Division along the second slips frame, and tool-joint is provided with the adaptive buckling groove that to be connected with Access Division.
The central tube of the bridging plug in the utility model is made up of alloy in lightweight, and like this, the central tube that this material is made can drilledly with comparalive ease remove, and the brill shortening bridging plug is except the time, and the metal fragment produced during milling can return more easily and drains into ground.
Remove because the bridging plug in the utility model has quick drill, effectively can shorten production time, add economic benefit.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation according to bridging plug of the present utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, central tube; 11, pressure break ball container cavity;
12, ball seat is supported; 13, pressure break ball stopper bar;
20, tool-joint; 30, the first slip assemblies;
31, the first slips frame; 32, the first slips;
40, the second slip assemblies; 41, the second slips frame;
42, the second slips; 43, Access Division;
51, the first support member; 52, the second support member;
60, packing element; 71, the first retaining ring;
72, the second retaining ring; 81, pin;
82, the first retainer ring; 83, the second retainer ring.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
It is noted that following detailed description is all exemplary, be intended to provide further instruction to the application.Unless otherwise, all technology used herein and scientific terminology have the identical meanings usually understood with the application person of an ordinary skill in the technical field.
It should be noted that used term is only to describe detailed description of the invention here, and be not intended to the illustrative embodiments of restricted root according to the application.
As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to comprise plural form, in addition, it is to be further understood that, " comprise " when using term in this manual and/or " comprising " time, it indicates existing characteristics, step, operation, device, assembly and/or their combination.
The utility model provides a kind of bridging plug, please refer to Fig. 1, and this bridging plug comprises central tube 10, and central tube 10 is made up of alloy in lightweight; Wherein, the upper end of central tube 10 is provided with tool-joint 20, and tool-joint 20 is set in the outside of central tube 10; Bridging plug also comprises the outside being all set in central tube 10 along axially extended first slip assemblies 30 of bridging plug and the second slip assemblies 40, first slip assemblies 30 and the second slip assemblies 40, and the first slip assemblies 30 is connected with tool-joint 20.
The central tube 10 of the bridging plug in the utility model is made up of alloy in lightweight, like this, the central tube 10 that this material is made can drilledly with comparalive ease remove, and the brill shortening bridging plug is except the time, and the metal fragment produced during milling can return more easily and drains into ground.
Remove because the bridging plug in the utility model has quick drill, effectively can shorten production time, add economic benefit.
Preferably, be provided with pressure break ball container cavity 11 in central tube 10, the lower end of pressure break ball container cavity 11 is provided with and supports ball seat 12, and central tube 10 is inserted with pressure break ball stopper bar 13.
In the utility model, by arranging pressure break ball container cavity 11 and pressure break ball can be arranged in central tube 10 by pressure break ball stopper bar 13 more easily.
In the utility model, more easily this bridging plug can be arranged on erecting tools by arranging tool-joint 20, and then realize laying of bridging plug more easily.
In the utility model, by arranging the first slip assemblies 30 and this bridging plug can be fixed in sleeve pipe by the second slip assemblies 40 more easily.
Preferably, the first slip assemblies 30 comprises the first slips frame 31 and the first slips 32, and one end of the first slips frame 31 is connected with tool-joint 20, and the other end of the first slips frame 31 is connected with the first slips 32; Second slip assemblies 40 comprises the second slips frame 41 and the second slips 42, and the second slips frame 41 is connected with central tube 10, and the second slips 42 is connected with the second slips frame 41.
In the utility model, the outer wall of the first slips 32 and the second slips 42 is provided with thorn is installed, and then by the first slip assemblies 30 and the second slip assemblies 40, bridging plug can be fixed in sleeve pipe.
Preferably, bridging plug also comprises the first support member 51 and the second support member 52 be set in outside central tube 10; One end of first support member 51 is plugged in the inner side of the first slips 32, and one end of the second support member 52 is plugged in the inner side of the second slips 42.
By arranging the first support member 51 and the second support member 52, can more easily the first slips 32 and the second slips 42 be strutted.
Preferably, one end of the inner side of insertion first slips 32 of the first support member 51 is tapering point, and the endoporus section be connected with the first support member 51 of the first slips 32 is bellmouth section; One end of the inner side of insertion second slips 42 of the second support member 52 is tapering point, and the endoporus section be connected with the second support member 52 of the second slips 42 is bellmouth section.
Preferably, be provided with packing element 60 between the first support member 51 and the second support member 52, and packing element 60 is set in the outside of central tube 10.
By arranging packing element 60, being tightly connected between bridging plug and sleeve pipe can be realized.
Preferably, the outside that the outside of the first support member 51 and packing element 60 is arranged with the first retaining ring 71, second support member 52 and packing element 60 is arranged with the second retaining ring 72.
Fixing by what arrange that the first retaining ring 71 and the second retaining ring 72 can realize between the first support member 51, second support member 52 and packing element 60 more easily.
Preferably, the second slips frame 41 is provided with the axially extended Access Division 43 along the second slips frame 41, and tool-joint 20 is provided with the adaptive buckling groove that to be connected with Access Division 43.
By arranging Access Division 43 and buckling groove, the anti-rotation between adjacent bridging plug can be realized more easily.
Now, the illustrative embodiments according to the application is described with reference to the accompanying drawings in more detail.But these illustrative embodiments can be implemented by multiple different form, and should not be interpreted as being only limited to embodiment set forth herein.
Should be understood that, there is provided these embodiments be in order to make the application open thorough and complete, and the design of these illustrative embodiments is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, expand the thickness in layer and region, and use the device that identical Reference numeral represents identical, thus will omit description of them.
Present embodiments provide a kind of bridging plug, please refer to Fig. 1, this bridging plug comprises central tube 10, and central tube 10 is made up of alloy in lightweight; Wherein, be provided with pressure break ball container cavity 11 in central tube 10, the lower end of pressure break ball container cavity 11 is provided with and supports ball seat 12, and central tube 10 is inserted with pressure break ball stopper bar 13.
The central tube 10 of the bridging plug in the present embodiment is made up of alloy in lightweight, and like this, the central tube 10 that this material is made can drilledly with comparalive ease remove, and the brill shortening bridging plug is except the time, and the metal fragment produced during milling can return more easily and drains into ground.
Remove because the bridging plug in the present embodiment has quick drill, effectively can shorten production time, add economic benefit.
In the present embodiment, by arranging pressure break ball container cavity 11 and pressure break ball can be arranged in central tube 10 by pressure break ball stopper bar 13 more easily.
In the present embodiment, the upper end of central tube 10 is provided with tool-joint 20, and tool-joint 20 is set in the outside of central tube 10.
In the present embodiment, more easily this bridging plug can be arranged on erecting tools by arranging tool-joint 20, and then realize laying of bridging plug more easily.
In the present embodiment, bridging plug also comprises the outside being all set in central tube 10 along axially extended first slip assemblies 30 of bridging plug and the second slip assemblies 40, first slip assemblies 30 and the second slip assemblies 40, and the first slip assemblies 30 is connected with tool-joint 20.
In the present embodiment, by arranging the first slip assemblies 30 and this bridging plug can be fixed in sleeve pipe by the second slip assemblies 40 more easily.
In the present embodiment, the first slip assemblies 30 comprises the first slips frame 31 and the first slips 32, and one end of the first slips frame 31 is connected with tool-joint 20, and the other end of the first slips frame 31 is connected with the first slips 32; Second slip assemblies 40 comprises the second slips frame 41 and the second slips 42, and the second slips frame 41 is connected with central tube 10, and the second slips 42 is connected with the second slips frame 41.
In the present embodiment, the outer wall of the first slips 32 and the second slips 42 is provided with thorn is installed, and then by the first slip assemblies 30 and the second slip assemblies 40, bridging plug can be fixed in sleeve pipe.
In the present embodiment, bridging plug also comprises the first support member 51 and the second support member 52 be set in outside central tube 10; One end of first support member 51 is plugged in the inner side of the first slips 32, and one end of the second support member 52 is plugged in the inner side of the second slips 42.
By arranging the first support member 51 and the second support member 52, can more easily the first slips 32 and the second slips 42 be strutted.
In the present embodiment, one end of the inner side of insertion first slips 32 of the first support member 51 is tapering point, and the endoporus section be connected with the first support member 51 of the first slips 32 is bellmouth section; One end of the inner side of insertion second slips 42 of the second support member 52 is tapering point, and the endoporus section be connected with the second support member 52 of the second slips 42 is bellmouth section.
In the present embodiment, be provided with packing element 60 between the first support member 51 and the second support member 52, and packing element 60 is set in the outside of central tube 10.
By arranging packing element 60, being tightly connected between bridging plug and sleeve pipe can be realized.
In the present embodiment, the outside that the outside of the first support member 51 and packing element 60 is arranged with the first retaining ring 71, second support member 52 and packing element 60 is arranged with the second retaining ring 72.
Fixing by what arrange that the first retaining ring 71 and the second retaining ring 72 can realize between the first support member 51, second support member 52 and packing element 60 more easily.
In the present embodiment, the second slips frame 41 is provided with the axially extended Access Division 43 along the second slips frame 41, and tool-joint 20 is provided with the adaptive buckling groove that to be connected with Access Division 43.
By arranging Access Division 43 and buckling groove, the connection between adjacent bridging plug can be realized more easily.
In the utility model, the first slips frame 31 is connected with tool-joint 20 by pin 81.
In the utility model, bridging plug also comprises the outside that the first retainer ring 82 and the second retainer ring 83, first retainer ring 82 are set in described first slips 32, and the second retainer ring 83 is set in the outside of the second slips 42.
The purpose of this utility model is to provide the alloy in lightweight used in a kind of straight well for cased hole completion, horizontal well multistage fracturing technique to bore bridging plug (bridging plug) soon.
The fast brill bridging plug main body of the utility model indication adopts light alloy material manufacture, and compared with the bridging plug of the ductile iron manufacture that this bridging plug and routine use, bore except time decreased more than 50%, the metal fragment produced during milling is easy to return and drains into ground.Remove because this bridging plug has quick drill, effectively can shorten production time, increase economic benefit.
Below in conjunction with Fig. 1, detailed description of the invention of the present utility model is described further:
The utility model provides a kind of alloy in lightweight used in horizontal well multistage fracturing technique and bores bridging plug soon, as shown in Figure 1, this alloy in lightweight bores bridging plug soon and is provided with the central tube 10 that 1 has through-hole structure, central tube 10 upper outside has screw thread to be connected with tool-joint 20, and central tube 10 lower outside has screw thread to be connected with the second slips frame 41.
Tool-joint 20 is connected with the first slips frame 31 pin 81, wherein one end of the first slips 32 is arranged in the fluting of the first slips frame 31, and fix with the first retainer ring 82, the other end inserts the fluting place of the first support member 51, first retaining ring 71 and the second retaining ring 72 are placed on the both sides of packing element 60 respectively and the inner side of the first retaining ring 71 and the second retaining ring 72 is inserted at packing element about 60 two ends, fluting place insertion second slips 42 of the second support member 52, the other end of the second slips 42 is arranged in the fluting of the second slips frame 41, and fixes with the second retainer ring 83.
In this application, the support ball seat 12 that the variable-diameter structure that central tube 10 inner upper has band inclined-plane is formed, coordinates the ball cage that can be used as to place pressure break ball with pressure break ball stopper bar 13.
In this application, there is ratchet-like one-way locking mechanism the first slips frame 31 inside, and all parts making to comprise the first slips less than 32 can not rollback after bottom offset, is in locking state.
The utility model is applicable in the horizontal well multistage fracturing technique of cased hole completion, uses in the oil-gas reservoir reservoir reconstruction of the pole low-permeabilities such as fine and close oil or shale gas.
The using method of this bridging plug:
When bridging plug in the utility model works, utilize cable by perforating gun, setting tool, bridging plug is together pumped to predetermined object well section after connecting, thrust is produced by setting tool, the first slips frame 31 is promoted by setting tool pushing cylinder, first slips 32, first support member 51, first retaining ring 71, packing element 60 is descending, first slips 32 is descending middlely to be strutted by the first support member 51 and is stuck on sleeve pipe, first retaining ring 71, packing element 60, expand and Sealed casing pipe after second retaining ring 72 is compressed in descending process, strut the second slips 42 in the descending process of second support member 52 and be stuck on sleeve pipe, complete the process that sets and give up.
Then, above carry perforating gun and carry out perforation to object well section, carry out pressure break after perforation, repeatedly repeat this process, until complete whole fracturing work, disposable whole bridging plug can be bored after pressure break completes after removing and produce.
The utility model protects a kind of alloy in lightweight to bore bridging plug soon; its architectural feature is: the first slips frame 31 is connected with the first slips 32 and uses the first retainer ring 82 to be fixed; composition upper slips assembly; second slips 42 is connected with the second slips frame 41 and uses the second retainer ring 83 to fix, composition lower slips assembly.Tool-joint 20, upper slips assembly, the first support member 51, first retaining ring 71, packing element 60, second retaining ring 72, second support member 52, lower slips assembly are arranged on central tube 10 successively according to order from top to bottom, and upper lower slips assembly is relative direction installation.Central tube 10 has through-hole structure.
In the utility model, except packing element 60 and slips small part material, all the other materials are light alloy material.
In the utility model, slips is made up of multiple identical independent slips, and is fixed by circulus.
In the utility model, its central tube 10 is through-hole structure, and top is the ball basket structure can placing pressure break ball be made up of pressure break ball stopper bar 13 and support ball seat 12.
In this application, the bottom of the second slips frame 41, with 4 outstanding structures, can engage each other with the groove on tool-joint 20, plays the effect of anti-rotation when bridging plug is bored in milling soon.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
The central tube 10 of the bridging plug in the utility model is made up of alloy in lightweight, like this, the central tube 10 that this material is made can drilledly with comparalive ease remove, and the brill shortening bridging plug is except the time, and the metal fragment produced during milling can return more easily and drains into ground.
Remove because the bridging plug in the utility model has quick drill, effectively can shorten production time, add economic benefit.
It should be noted that, term " first ", " second " etc. in the manual of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as the embodiment example of the application described herein if with except here diagram or describe those except order implement.
In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
For convenience of description, here can usage space relative terms, as " ... on ", " in ... top ", " at ... upper surface ", " above " etc., be used for the spatial relation described as a device shown in the figure or feature and other devices or feature.
Should be understood that, space relative terms is intended to comprise the different azimuth in use or operation except the described in the drawings orientation of device.
Such as, " in other devices or structure below " or " under other devices or structure " will be positioned as after if the device in accompanying drawing is squeezed, being then described as the device of " above other devices or structure " or " on other devices or structure ".Thus, exemplary term " in ... top " can comprise " in ... top " and " in ... below " two kinds of orientation.
This device also can other different modes location (90-degree rotation or be in other orientation), and relatively describe space used here and make respective explanations.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a bridging plug, comprises central tube (10), it is characterized in that, described central tube (10) is made up of alloy in lightweight; Wherein, the upper end of described central tube (10) is provided with tool-joint (20), and described tool-joint (20) is set in the outside of described central tube (10); Described bridging plug also comprises axially extended first slip assemblies (30) along described bridging plug and the second slip assemblies (40), described first slip assemblies (30) and described second slip assemblies (40) are all set in the outside of described central tube (10), and described first slip assemblies (30) is connected with described tool-joint (20).
2. bridging plug according to claim 1, it is characterized in that, pressure break ball container cavity (11) is provided with in described central tube (10), the lower end of described pressure break ball container cavity (11) is provided with and supports ball seat (12), and described central tube (10) is inserted with pressure break ball stopper bar (13).
3. bridging plug according to claim 1, it is characterized in that, described first slip assemblies (30) comprises the first slips frame (31) and the first slips (32), and one end of described first slips frame (31) is connected with described tool-joint (20), the other end of described first slips frame (31) is connected with described first slips (32);
Described second slip assemblies (40) comprises the second slips frame (41) and the second slips (42), and described second slips frame (41) is connected with described central tube (10), described second slips (42) is connected with described second slips frame (41).
4. bridging plug according to claim 3, is characterized in that, described bridging plug also comprises the first support member (51) and the second support member (52) that are set in described central tube (10) outside; One end of described first support member (51) is plugged in the inner side of described first slips (32), and one end of described second support member (52) is plugged in the inner side of described second slips (42).
5. bridging plug according to claim 4, it is characterized in that, one end of the inner side of described first slips (32) of insertion of described first support member (51) is tapering point, and the endoporus section be connected with described first support member (51) of described first slips (32) is bellmouth section; One end of the inner side of described second slips (42) of insertion of described second support member (52) is tapering point, and the endoporus section be connected with described second support member (52) of described second slips (42) is bellmouth section.
6. bridging plug according to claim 4, it is characterized in that, be provided with packing element (60) between described first support member (51) and described second support member (52), and described packing element (60) is set in the outside of described central tube (10).
7. bridging plug according to claim 6, it is characterized in that, the outside of described first support member (51) and described packing element (60) is arranged with the first retaining ring (71), and the outside of described second support member (52) and described packing element (60) is arranged with the second retaining ring (72).
8. bridging plug according to claim 3, it is characterized in that, described second slips frame (41) is provided with the axially extended Access Division (43) along described second slips frame (41), and described tool-joint (20) is provided with the adaptive buckling groove that to be connected with described Access Division (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788550.XU CN204457594U (en) | 2014-12-12 | 2014-12-12 | Bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788550.XU CN204457594U (en) | 2014-12-12 | 2014-12-12 | Bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457594U true CN204457594U (en) | 2015-07-08 |
Family
ID=53664496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420788550.XU Expired - Fee Related CN204457594U (en) | 2014-12-12 | 2014-12-12 | Bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507849A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Self-removal bridge plug for fracturing |
| CN105735940A (en) * | 2014-12-12 | 2016-07-06 | 中国石油天然气股份有限公司 | Bridge plug |
-
2014
- 2014-12-12 CN CN201420788550.XU patent/CN204457594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735940A (en) * | 2014-12-12 | 2016-07-06 | 中国石油天然气股份有限公司 | Bridge plug |
| CN105507849A (en) * | 2015-12-31 | 2016-04-20 | 中国石油天然气股份有限公司 | Self-removal bridge plug for fracturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106223922B (en) | Shale gas horizontal well proppant intra-seam shielding temporary plugging staged fracturing process | |
| CN104196464B (en) | Tubing string string and bridging plug set the method made with abrasive perforating connection | |
| US6845820B1 (en) | Completion apparatus and methods for use in hydrocarbon wells | |
| CN109723391B (en) | Threaded coupling, system thereof and method for manufacturing threaded coupling | |
| CN105840166B (en) | A kind of fractured horizontal well gas testing well-completing process using complete dissolvable bridge plug | |
| US20160245035A1 (en) | Assembling a perforating gun string within a casing string | |
| CN103046896A (en) | Fracturing bridge plug | |
| US20180209241A1 (en) | Packing element with timed setting sequence | |
| CN204457594U (en) | Bridging plug | |
| CN107939336B (en) | Full-bore soluble sealing packing rubber plug and well completion method | |
| CN106593387A (en) | Sectional multi-cluster fracturing method of horizontal well | |
| CN108179991B (en) | Bridge plug capable of being salvaged after fracturing | |
| CN107956431A (en) | A kind of oil casing collar | |
| RU2630935C1 (en) | In-mine down-hole tools pose | |
| CN203412563U (en) | Drillable slide sleeve | |
| US11208869B2 (en) | Static packer plug | |
| AU2016398436B2 (en) | Big bore running tool quick lock adaptor | |
| CN105735940A (en) | Bridge plug | |
| US10267120B1 (en) | Formation interface assembly (FIA) | |
| CN204457596U (en) | Bridging plug assembly | |
| CN211115946U (en) | Casing cementing slim hole staged fracturing device | |
| CN104153751B (en) | A kind of static pressure pressure reduction sliding sleeve | |
| US9145744B2 (en) | Plug and perforate using casing profiles | |
| CN108301789B (en) | Casing pulling device and casing pulling method | |
| RU2493353C1 (en) | Packer assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |