CN204627537U - One exempts from brill type big orifice composite fracturing bridging plug - Google Patents
One exempts from brill type big orifice composite fracturing bridging plug Download PDFInfo
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- CN204627537U CN204627537U CN201520349870.XU CN201520349870U CN204627537U CN 204627537 U CN204627537 U CN 204627537U CN 201520349870 U CN201520349870 U CN 201520349870U CN 204627537 U CN204627537 U CN 204627537U
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- central tube
- body cap
- bridging plug
- packing element
- slips
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Abstract
The utility model relates to one and exempts from brill type big orifice composite fracturing bridging plug; Belong to Oil/gas Well, underground work isolating tool technical field.This composite fracturing bridging plug, is made up of central tube, lower contact, slips and back of the body cap: one end of central tube is provided with lower contact by screw thread; The central tube of lower contact side is provided with packing element A, packing element B and packing element C by upper back band and lower back band; Lower central tube between back band and lower contact is provided with slips by cone, the central tube of upper back band side is provided with back of the body cap by back of the body cap screw thread; Be provided with lock ring between back of the body cap and back of the body cap, the central tube of back of the body cap side is provided with grooving.This bridging plug structure is simply bored except deblocking without the need to milling, avoids casing damage, and have higher and stable setting force when this bridging plug sets under the effect of lock ring and slips simultaneously, solve existing bridging plug poor reliability, the life-span is short, the problem that bidirectional bearing ability is low; Be particularly suitable for the application of petroleum exploration and development construction sealing.
Description
Technical field
The utility model relates to one and exempts from brill type big orifice composite fracturing bridging plug; Belong to Oil/gas Well, underground work isolating tool technical field.
Background technology
Bridging plug is a kind of important instrument of sealing in petroleum exploration and development process.Oil field well adopts bridging plug to separate oil (gas) interval each in pit shaft usually, so that complete the separate stratum fracfturing in the pit shaft of oil field, changes stifled grade for operation.In work progress, usually there will be that sand buries, theing cement solidifies causes bridging plug cannot the problem of deblocking.Cannot the risk of deblocking in order to reduce bridging plug, usually use detachable bridge plug and drilling bridging plug to carry out sealing operation to pit shaft at present, can bore bridging plug structural principle relatively simple, pressure-bearing index is high, but can only milling bore except deblocking, easily causes casing damage.Detachable bridge plug easily midway sets, and deblocking, unfreezing mechanism are dumb, and poor reliability, the life-span is short, and bidirectional bearing ability is low.Be not well positioned to meet the needs of petroleum exploration and development construction.
Summary of the invention
The purpose of this utility model is: provide a kind of structure simple; Bearing capacity is high, bore without the need to milling and remove, and can solve existing bridging plug poor reliability, the life-span is short, brill type of the exempting from big orifice composite fracturing bridging plug of the low problem of bidirectional bearing ability.
The technical solution of the utility model is:
One exempts from brill type big orifice composite fracturing bridging plug, and it is made up of central tube, lower contact, slips and back of the body cap; It is characterized in that: one end of central tube is provided with lower contact by screw thread; The central tube of lower contact side is provided with packing element A, packing element B and packing element C by upper back band and lower back band; Lower central tube between back band and lower contact is provided with slips by cone, the central tube of upper back band side is provided with back of the body cap by back of the body cap screw thread; Be provided with lock ring between back of the body cap and back of the body cap, the central tube of back of the body cap side is provided with grooving.
Described slips is provided with slips hoop.
Described cone is connected with central tube by volume skin pin A.
Described back of the body cap is connected with central tube by volume skin pin B.
Described lock ring is split ring; The inner surface of lock ring is provided with unidirectional tooth, and the central tube corresponding with lock ring is provided with ratchet, lock ring by unidirectional tooth by being connected with the fit engagement of ratchet.
The invention has the advantages that:
This will pull central tube to move upward by setting tool when exempting from the work of brill type big orifice composite fracturing bridging plug, and the setting sleeve simultaneously in setting tool promotes back of the body cap and moves downward.The back of the body cap that central tube drives lower contact and slips and setting sleeve to promote, lock ring, back of the body cap, upper back band, lower back band, packing element A, packing element B, packing element C, cone do relative motion, thus can extrude packing element A, packing element B, packing element C and slips, touched by outwards expanding set action with oil well socket joint after packing element A, packing element B, packing element C are stressed, slips after stressed extruding under the guiding of the cone conical surface to surrounding motion finally and oil well socket joint touched grappling action.Lock ring to cooperatively interact locked maintenance setting force with the ratchet of central tube under the promotion of back of the body cap.Ensure that the stability and reliability that set.When needing deblocking to give up, continuation is increased setting force by setting tool, when produced set mechanical force reach the release strength of central tube time, central tube to have ruptured action of giving up from grooving.This bridging plug structure is simply bored except deblocking without the need to milling, avoids casing damage, and have higher and stable setting force when this bridging plug sets under the effect of lock ring and slips simultaneously, solve existing bridging plug poor reliability, the life-span is short, the problem that bidirectional bearing ability is low; Be particularly suitable for the application of petroleum exploration and development construction sealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, central tube, 2, lower contact, 3, slips, 4, back of the body cap, 5, upper back band, 6, lower back band, 7, packing element A, 8, packing element B, 9, packing element C, 10, cone, 11, back of the body cap, 12, lock ring, 13, grooving, 14, slips hoop, 15, volume skin pin A, 16, volume skin pin B.
Detailed description of the invention:
This exempts from brill type big orifice composite fracturing bridging plug, is made up of central tube 1, lower contact 2, slips 3 and back of the body cap 4; One end of central tube 1 is provided with lower contact 2 by screw thread; The central tube 1 of lower contact 2 side is provided with packing element A7, packing element B8 and packing element C9 by upper back band 5 and lower back band 6; Packing element A7, packing element B8 and packing element C9 have be squeezed after lateral length compression shorten, the function that radial diameter will expand, can complete and set action under oil field pit shaft coordinates; Central tube 1 between lower back band 6 and lower contact 2 is provided with slips 3 by cone 10, and cone 10 is connected with central tube 1 by volume skin pin A15.Slips 3 is provided with slips hoop 14.When slips 3 is squeezed, the last and oil well socket joint of moving along the conical surface of cone 10 to surrounding is touched grappling action.The central tube 1 of upper back band 5 side is provided with back of the body cap 4 by back of the body cap 11 screw thread; Back of the body cap 11 is connected with central tube 1 by volume skin pin B16.Be provided with lock ring 12 between back of the body cap 11 and back of the body cap 4, lock ring 12 is split ring; The inner surface of lock ring 12 is provided with unidirectional tooth, the central tube 1 corresponding with lock ring 12 is provided with ratchet, lock ring 1 by unidirectional tooth by being connected with the fit engagement of ratchet, lock ring 12 can only not have the function of retrogressing to the lower lateral movement of central tube 1, have the effect of locking upper back band 5, lower back band 6, packing element A7, packing element B8 and packing element C9.The central tube 1 of back of the body cap 11 side is provided with grooving 13, and the ability that grooving 13 bears setting force relative to the other parts of central tube 1 is more weak, and when strengthening setting force, central tube 1 will realize with this operation of giving up from grooving 13 fracture.
When this exempts from the work of brill type big orifice composite fracturing bridging plug, setting tool pulls central tube 1 to move upward, and the setting sleeve simultaneously in setting tool promotes back of the body cap 11 and moves downward.Back of the body cap 11, lock ring 12 that central tube 1 drives lower contact 2 and slips 3 to promote with setting sleeve, carry on the back cap 4, upper back band 5, lower back band 6, packing element A7, packing element B8, packing element C9 and cone 10 and do relative motion, cut off volume skin pin A15 simultaneously and roll up skin pin B16.Packing element A7, packing element B8, packing element C9 and slips 3 will be squeezed thus, packing element A7, packing element B8, packing element C9 are squeezed to have touched outwards expanding with oil well socket joint after power and set action, and slips 3 will to move along the cone inclined-plane of cone 10 to surrounding finally and oil well socket joint has touched grappling action under stressed extruding.Lock ring 12 moves downward and the mutual locked maintenance setting force of ratchet that arranges on central tube 1 under the promotion of back of the body cap 6, ensure that the stability that bridging plug sets.When needing deblocking to give up, continuation is increased setting force by setting tool, and when produced mechanical force reaches the release strength of central tube 1, central tube 1 is given up from grooving 13 fracture to complete.This bridging plug structure is simply bored except deblocking without the need to milling, avoids casing damage, and have higher and stable setting force when this bridging plug sets under the effect of lock ring and slips simultaneously, solve existing bridging plug poor reliability, the life-span is short, the problem that bidirectional bearing ability is low; Be particularly suitable for the application of petroleum exploration and development construction sealing.
Claims (5)
1. exempt from a brill type big orifice composite fracturing bridging plug, it is made up of central tube (1), lower contact (2), slips (3) and back of the body cap (4); It is characterized in that: one end of central tube (1) is provided with lower contact (2) by screw thread; The central tube (1) of lower contact (2) side is provided with packing element A(7 by upper back band (5) and lower back band (6)), packing element B(8) and packing element C(9); Central tube (1) between lower back band (6) and lower contact (2) is provided with slips (3) by cone (10), the central tube (1) of upper back band (5) side is provided with back of the body cap (4) by back of the body cap (11) screw thread; Be provided with lock ring (12) between back of the body cap (11) and back of the body cap (4), the central tube (1) of back of the body cap (11) side is provided with grooving (13).
2. one according to claim 1 exempts from brill type big orifice composite fracturing bridging plug, it is characterized in that: described slips (3) is provided with slips hoop (14).
3. one according to claim 1 exempts from brill type big orifice composite fracturing bridging plug, it is characterized in that: described cone (10) is by volume skin pin A(15) be connected with central tube (1).
4. one according to claim 1 exempts from brill type big orifice composite fracturing bridging plug, it is characterized in that: described back of the body cap (11) is by volume skin pin B(16) be connected with central tube (1).
5. one according to claim 1 exempts from brill type big orifice composite fracturing bridging plug, it is characterized in that: described lock ring (12) is split ring; The inner surface of lock ring (12) is provided with unidirectional tooth, and the central tube (1) corresponding with lock ring (12) is provided with ratchet, lock ring (12) by unidirectional tooth by being connected with the fit engagement of ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349870.XU CN204627537U (en) | 2015-05-27 | 2015-05-27 | One exempts from brill type big orifice composite fracturing bridging plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520349870.XU CN204627537U (en) | 2015-05-27 | 2015-05-27 | One exempts from brill type big orifice composite fracturing bridging plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204627537U true CN204627537U (en) | 2015-09-09 |
Family
ID=54046576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520349870.XU Expired - Fee Related CN204627537U (en) | 2015-05-27 | 2015-05-27 | One exempts from brill type big orifice composite fracturing bridging plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204627537U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798088A (en) * | 2019-03-13 | 2019-05-24 | 荆州市赛瑞能源技术有限公司 | A kind of permanent type bridge plug unsealed |
-
2015
- 2015-05-27 CN CN201520349870.XU patent/CN204627537U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798088A (en) * | 2019-03-13 | 2019-05-24 | 荆州市赛瑞能源技术有限公司 | A kind of permanent type bridge plug unsealed |
| CN109798088B (en) * | 2019-03-13 | 2021-07-09 | 荆州市赛瑞能源技术有限公司 | Permanent bridge plug capable of being unsealed |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20190527 |