CN204899838U - Compound bridging plug of ball cage - Google Patents
Compound bridging plug of ball cage Download PDFInfo
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- CN204899838U CN204899838U CN201520703897.4U CN201520703897U CN204899838U CN 204899838 U CN204899838 U CN 204899838U CN 201520703897 U CN201520703897 U CN 201520703897U CN 204899838 U CN204899838 U CN 204899838U
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Abstract
The utility model relates to an oil gas production equipment technical field discloses a compound bridging plug of ball cage, including the center tube, packing element in the middle of center tube middle part outside cover is equipped with, both ends are provided with packing element and lower packing element respectively about the middle packing element, go up packing element and the lower equal suit of packing element on the center tube, it is equipped with the epicone body by lower supreme cover in proper order to go up packing element upper portion, go up the slips, go up the throw -out collar, the packing element lower part is from top to bottom overlapped in proper order and is equipped with down the cone down, lower slips, lower throw -out collar, it all fixes on the center tube through the shear pin with lower cone to go up the cone, it all fixes on the center tube through the slips tension sleeve with lower slips to go up the slips, about the center tube both ends respectively with the top connection, connector thread connects down, end face contaction on terminal surface and the last throw -out collar under the top connection, end face contaction under lower clutch up end and the lower throw -out collar, ball cage subassembly is installed to center tube upper portion inboard. Its simple structure, the installation is nimble, and is sealed firm, and it is efficient to bore the mill.
Description
Technical field
The utility model relates to oil gas production equipment technical field, particularly relates to a kind of ball cage type composite bridge plug.
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.
Utility model content
The utility model aims to provide a kind of ball cage type composite bridge plug, well solves the problems referred to above, and its structure is simple, and flexible for installation, it is firm to seal, and brill mill efficiency is high.
The technical solution of the utility model is a kind of ball cage type composite bridge plug, comprise central tube, in the middle part of described central tube, outside is set with middle packing element, the middle upper and lower two ends of packing element are respectively arranged with packing element and lower rubber cylinder, upper packing element and lower rubber cylinder are all sleeved on central tube, upper packing element top is set with upper cone from the bottom to top successively, upper slips, upper throw-out collar, lower rubber cylinder bottom is set with lower cone from top to bottom successively, lower slips, lower throw-out collar, upper cone and lower cone are all fixed on central tube by shear pin, upper slips and lower slips are all fixed on central tube by slips cranse, the upper and lower two ends of central tube respectively with top connection, lower contact is threaded, top connection lower surface contacts with upper throw-out collar upper surface, lower contact upper surface contacts with lower throw-out collar lower surface, central tube upper inner is provided with ball basket assembly.
Further, between described upper packing element and upper cone, back band is provided with between lower rubber cylinder and lower cone.
Further, between described top connection and central tube, upper baffle ring, lower baffle ring is respectively arranged with between lower contact and central tube.
Further, described ball basket assembly comprises ball seat, steel ball and cover of blocking, described in cover of blocking steel ball is constrained in ball seat, described ball seat inner tubal wall has the conical surface of horn mouth shape, the described conical surface and steel ball size suitable.
Further, described top connection, lower contact, upper cone, lower cone, upper throw-out collar, lower throw-out collar are composite material and make.
The beneficial effects of the utility model are: central tube of the present utility model adopts be threaded with top connection, lower contact respectively, can each component in the middle part of mounting center pipe flexibly, and flexible for installation, applicability is wide, can regulate according to concrete size; The design of equal back band between upper packing element and upper cone, between lower rubber cylinder and lower cone, make packing element, lower rubber cylinder, middle packing element can fully extrude, uniform force, reaches good packing effect; Upper baffle ring, lower baffle ring is respectively arranged with between top connection and central tube, between lower contact and central tube, the design of upper baffle ring and lower baffle ring, make the connection between central tube and top connection, lower contact more closely, seal firm, the employing of composite material, makes that whole bridging plug is more easily drilled to be removed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1. central tube, 2. ball basket assembly, 3. upper baffle ring, throw-out collar on 41., 42. times throw-out collars, 51. upper slipses, 52. lower slipses, 61. upper cones, 62. lower cones, 7. back band, packing element on 81., 82. lower rubber cylinders, 9. middle packing element, 10. lower baffle ring, 11. lower contacts, 12. top connections, 13. slips cranses, 14. shear pins.
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 cage type composite bridge plug, comprise central tube 1, in the middle part of central tube 1, outside is set with middle packing element 9, middle packing element about 9 two ends are respectively arranged with packing element 81 and lower rubber cylinder 82, upper packing element 81 is all sleeved on central tube 1 with lower rubber cylinder 82, upper packing element 81 top is set with upper cone 61 from the bottom to top successively, upper slips 51, upper throw-out collar 41, lower rubber cylinder 82 bottom is set with lower cone 62 from top to bottom successively, lower slips 52, lower throw-out collar 42, upper cone 61 and lower cone 62 are all fixed on central tube 1 by shear pin 14, upper slips 51 and lower slips 52 are all fixed on central tube 1 by slips cranse 13, central tube about 1 two ends respectively with top connection 12, lower contact 11 is threaded, can each component in the middle part of mounting center pipe 1 flexibly, flexible for installation, applicability is wide, can regulate according to concrete size, top connection 12 lower surface contacts with upper throw-out collar 41 upper surface, and lower contact 11 upper surface contacts with lower throw-out collar 42 lower surface, and central tube 1 upper inner is provided with ball basket assembly 2.Between upper packing element 81 and upper cone 61, between lower rubber cylinder 82 and lower cone 62, be provided with back band 7, packing element 81, lower rubber cylinder 82, middle packing element 9 fully can be extruded, uniform force, reach good packing effect.Be respectively arranged with upper baffle ring 3, lower baffle ring 10 between top connection 12 and central tube 1, between lower contact 11 and central tube 1, make the connection between central tube 1 and top connection 12, lower contact 11 more closely, seal firm.Ball basket assembly 2 comprises ball seat, steel ball and cover of blocking, and steel ball constrains in ball seat by cover of blocking, and ball seat inner tubal wall has the conical surface of horn mouth shape, the conical surface and steel ball size suitable.Top connection 12, lower contact 11, upper cone 61, lower cone 62, upper throw-out collar 41, lower throw-out collar 42 are composite material and make, and make that whole bridging plug is more easily drilled to be removed.
During use, the top connection 12 of central tube 1 is connected with special setting instrument, time setting, setting instrument pushing cylinder promotes upper throw-out collar 41, and upper throw-out collar 41 promotes upper slips 51 and moves down along upper cone 61 and strut, when setting power raises, upper cone 61 cuts off shear pin 14, continue to move down, promote back band 7, packing element 81, lower rubber cylinder 82, middle packing element 9 in compression.Simultaneously, central tube 2 is under the reverse stayed mast effect of setting instrument, drive lower throw-out collar 42, lower cone 62, lower slips 52 and back band 7 up to move, reverse compression, makes packing element 81, middle packing element 9 and lower rubber cylinder 82 expand the object reaching shutoff casing annulus.Now upper and lower slips has been stuck on internal surface of sleeve pipe, when setting implement load continues to rise, completes the setting of bridging plug and gives up.The utility model structure is simple, and flexible for installation, it is firm to seal, and brill mill efficiency is high.
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 (5)
1. a ball cage type composite bridge plug, it is characterized in that: comprise central tube, in the middle part of described central tube, outside is set with middle packing element, the described upper and lower two ends of middle packing element are respectively arranged with packing element and lower rubber cylinder, described upper packing element and lower rubber cylinder are all sleeved on central tube, described upper packing element top is set with upper cone from the bottom to top successively, upper slips, upper throw-out collar, described lower rubber cylinder bottom is set with lower cone from top to bottom successively, lower slips, lower throw-out collar, described upper cone and lower cone are all fixed on central tube by shear pin, described upper slips and lower slips are all fixed on central tube by slips cranse, the upper and lower two ends of described central tube respectively with top connection, lower contact is threaded, described top connection lower surface contacts with upper throw-out collar upper surface, described lower contact upper surface contacts with lower throw-out collar lower surface, described central tube upper inner is provided with ball basket assembly.
2. ball cage type composite bridge plug according to claim 1, is characterized in that: between described upper packing element and upper cone, be provided with back band between lower rubber cylinder and lower cone.
3. ball cage type composite bridge plug according to claim 1, is characterized in that: be respectively arranged with upper baffle ring, lower baffle ring between described top connection and central tube, between lower contact and central tube.
4. ball cage type composite bridge plug according to claim 1, it is characterized in that: described ball basket assembly comprises ball seat, steel ball and cover of blocking, steel ball constrains in ball seat by described cover of blocking, and described ball seat inner tubal wall has the conical surface of horn mouth shape, the described conical surface and steel ball size suitable.
5. ball cage type composite bridge plug according to claim 1, is characterized in that: described top connection, lower contact, upper cone, lower cone, upper throw-out collar, lower throw-out collar are composite material and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703897.4U CN204899838U (en) | 2015-09-11 | 2015-09-11 | Compound bridging plug of ball cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520703897.4U CN204899838U (en) | 2015-09-11 | 2015-09-11 | Compound bridging plug of ball cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899838U true CN204899838U (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520703897.4U Active CN204899838U (en) | 2015-09-11 | 2015-09-11 | Compound bridging plug of ball cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204899838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840166A (en) * | 2016-04-19 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Horizontal well fracturing gas testing and well completion technology adopting completely dissoluble bridge plug |
| CN112855066A (en) * | 2021-01-05 | 2021-05-28 | 孙淑芳 | From soluble bridging plug of taking fracturing ball |
-
2015
- 2015-09-11 CN CN201520703897.4U patent/CN204899838U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840166A (en) * | 2016-04-19 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Horizontal well fracturing gas testing and well completion technology adopting completely dissoluble bridge plug |
| CN105840166B (en) * | 2016-04-19 | 2018-09-11 | 中石化重庆涪陵页岩气勘探开发有限公司 | A kind of fractured horizontal well gas testing well-completing process using complete dissolvable bridge plug |
| CN112855066A (en) * | 2021-01-05 | 2021-05-28 | 孙淑芳 | From soluble bridging plug of taking fracturing ball |
| CN112855066B (en) * | 2021-01-05 | 2021-09-14 | 大安鸿源管业有限公司 | From soluble bridging plug of taking fracturing ball |
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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: 20160317 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. |