CN204899852U - Pitching type complex ball seat structure for bridging plug - Google Patents
Pitching type complex ball seat structure for bridging plug Download PDFInfo
- Publication number
- CN204899852U CN204899852U CN201520706459.3U CN201520706459U CN204899852U CN 204899852 U CN204899852 U CN 204899852U CN 201520706459 U CN201520706459 U CN 201520706459U CN 204899852 U CN204899852 U CN 204899852U
- Authority
- CN
- China
- Prior art keywords
- ball
- hollow section
- bridge plug
- type composite
- socket structure
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- 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.)
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- 229920000715 Mucilage Polymers 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims description 18
- 210000003284 Horns Anatomy 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 241000985665 Cecropia obtusifolia Species 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000003044 adaptive Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Abstract
The utility model relates to an oil gas production equipment technical field discloses a pitching type complex ball seat structure for bridging plug, including the hollow tube, hollow tube up end internal diameter department is provided with the chamfer, and the chamfer is directly located to be provided with by hollow tube lower extreme off -plate, and hollow tube inner wall lower part is provided with the undergauge step of trumpet - shaped form, and undergauge step upper surface mucilage binding has the sheet rubber. Its simple structure, it is sealed firm, to bore and grind efficiently, when in time containing the great impurity of hardness in the bridging plug, sealed effect is still fine.
Description
Technical field
The utility model relates to oil gas production equipment technical field, particularly relates to a kind of ball-throwing type composite bridge plug ball socket structure.
Background technology
Shale gas, shale gas contains the natural gas resource that can supply exploitation in rammell, and the shale gas recoverable reserves of China occupies first place in the world, and the economical and efficient exploitation of shale gas is significant to national society.Carry out the unconventionaloil pool such as shale gas reservoir at present both at home and abroad and hide the easy brill formula composite bridge plug multi-section multi-layer fracturing technique of the main use of exploitation, this technology because it is simple by the restriction of the staged fracturing number of plies, tool tubular column, bridging plug bore milling complete after ensure that pit shaft unimpeded be convenient to subsequent technique tubing string under to enter etc. advantage abroad segmentation progression many, transform sweeping low-permeability oil gas well, the aboveground extensive use of shale gas, achieve significant effect of increasing production.
But capping tools bridging plug existence sealing important in this technology is at present unreliable, brill mill efficiency is low, easily block, part is more, the more high problems of complex structure, cost.And ball-throwing type composite bridge plug is a kind of widely used bridging plug, the quality of the ball socket structure of ball-throwing type composite bridge plug is related to the shutoff sealing quality of bridging plug, existing ball basket assembly has impurity in bridging plug, and during the impurity that particularly hardness is larger, the sealing performance of shutoff is very bad.
Utility model content
The utility model aims to provide a kind of ball-throwing type composite bridge plug ball socket structure, well solves the problems referred to above, and its structure is simple, and it is firm to seal, and it is high to bore mill efficiency, in time in bridging plug containing the impurity that hardness is larger time, sealing effectiveness is still fine.
The technical solution of the utility model is a kind of ball-throwing type composite bridge plug ball socket structure, comprise hollow section, hollow section upper surface inner radius is provided with chamfering, hollow section lower surface outer radius is provided with chamfering, hollow section inner wall lower is provided with the undergauge step of horn mouth shape, and undergauge step upper surface mucilage binding has sheet rubber.
Further, described hollow section outer wall is provided with screw thread.
Further, described hollow section outer wall is provided with pin hole.
Further, described sheet rubber has a slice at least.
Further, described undergauge step has two, and diameter is descending to be reduced successively.
Further, described hollow section is that composite material is made.
The beneficial effects of the utility model are: the undergauge step of the utility model horn mouth shape is drop into the steel ball contact surface in bridging plug, undergauge step upper surface mucilage binding has the design of sheet rubber, make steel ball under the effect of the pressure, contact tightr with ball seat, seal tighter, the resilient characteristic of sheet rubber, even if when making there are the impurity such as sand between steel ball and undergauge step upper surface, impurity also can be under the effect of the pressure, be absorbed in sheet rubber, can not make to produce gap between steel ball and undergauge step upper surface, seal more reliable; The chamfer design of hollow section upper surface inner radius, can make steel ball more easily enter in ball seat; And the chamfer design of hollow section lower surface outer radius, the utility model ball seat can be made more easily to insert in central tube when being installed into central tube; Screw thread and the design of pin hole meet the utility model ball seat and the diversity be connected between central tube, can be threaded, and also can connect by pin, for ensureing that connecting effect also can be connected with pin by screw thread simultaneously; The design of multiple undergauge step, can meet the demand of the steel ball of different size, achieves adaptive capacity widely; Hollow section is that composite material is made, and makes that ball seat is more easily drilled to be removed, and improves that to bore mill efficiency high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1. hollow section, 2. chamfering, 3. undergauge step, 4. sheet rubber, 5. screw thread, 6. pin hole.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, the utility model provides a kind of ball-throwing type composite bridge plug ball socket structure, comprise hollow section 1, hollow section 1 upper surface inner radius is provided with chamfering 2, hollow section 1 lower surface outer radius is provided with chamfering 2, hollow section 1 inner wall lower is provided with the undergauge step 3 of horn mouth shape, and undergauge step 3 upper surface mucilage binding has sheet rubber 4.The undergauge step 3 of horn mouth shape is drop into the steel ball contact surface in bridging plug, undergauge step 3 upper surface mucilage binding has the design of sheet rubber 4, make steel ball under the effect of the pressure, contact with ball seat tightr, seal tighter, the resilient characteristic of sheet rubber 4, even if when making there are the impurity such as sand between steel ball and undergauge step 3 upper surface, impurity also can under the effect of the pressure, be absorbed in sheet rubber 4, can not make to produce gap between steel ball and undergauge step 3 upper surface, seal more reliable.
Hollow section 1 outer wall is provided with screw thread 5.Hollow section 1 outer wall is provided with pin hole 6.Screw thread 5 and the design of pin hole 6 meet the utility model ball seat and the diversity be connected between central tube, can be threaded, and also can connect by pin, for ensureing that connecting effect also can be connected with pin by screw thread simultaneously.Sheet rubber 4 has a slice at least, and sheet rubber 4 is thicker, and sealing effectiveness is better.Undergauge step 3 has two, and diameter is descending to be reduced successively, and the design of multiple undergauge step 3, can meet the demand of the steel ball of different size, achieves adaptive capacity widely.Hollow section 1 is made for composite material, makes that ball seat is more easily drilled to be removed, and improves that to bore mill efficiency high.
During use, directly hollow section 1 is inserted in central tube, be threaded or pin connection, then drop into steel ball, install simple, easy to use.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (6)
1. a ball-throwing type composite bridge plug ball socket structure, it is characterized in that: comprise hollow section, described hollow section upper surface inner radius is provided with chamfering, described hollow section lower surface outer radius is provided with chamfering, described hollow section inner wall lower is provided with the undergauge step of horn mouth shape, and described undergauge step upper surface mucilage binding has sheet rubber.
2. ball-throwing type composite bridge plug ball socket structure according to claim 1, is characterized in that: described hollow section outer wall is provided with screw thread.
3. ball-throwing type composite bridge plug ball socket structure according to claim 1, is characterized in that: described hollow section outer wall is provided with pin hole.
4. ball-throwing type composite bridge plug ball socket structure according to claim 1, is characterized in that: described sheet rubber has a slice at least.
5. ball-throwing type composite bridge plug ball socket structure according to claim 1, it is characterized in that: described undergauge step has two, diameter is descending to be reduced successively.
6. ball-throwing type composite bridge plug ball socket structure according to claim 1, is characterized in that: described hollow section is that composite material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520706459.3U CN204899852U (en) | 2015-09-11 | 2015-09-11 | Pitching type complex ball seat structure for bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520706459.3U CN204899852U (en) | 2015-09-11 | 2015-09-11 | Pitching type complex ball seat structure for bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899852U true CN204899852U (en) | 2015-12-23 |
Family
ID=54922038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520706459.3U Active CN204899852U (en) | 2015-09-11 | 2015-09-11 | Pitching type complex ball seat structure for bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204899852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364939A (en) * | 2019-12-19 | 2020-07-03 | 大庆油田有限责任公司 | Double-conical-surface sealing module for downhole tool |
-
2015
- 2015-09-11 CN CN201520706459.3U patent/CN204899852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364939A (en) * | 2019-12-19 | 2020-07-03 | 大庆油田有限责任公司 | Double-conical-surface sealing module for downhole tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160325 Address after: 100000 Beijing city Chaoyang District Henan Road No. 1 Building No. 4 room 1110 Patentee after: Shun Tai Energy Technology Development Co., Ltd. Address before: 404100 Chongqing Yubei District City Longxing Zhen Ying Long Road No. 19 Patentee before: CHONGQING DINGSHUNLONG ENERGY TECHNOLOGY CO., LTD. |