CN204098848U - A kind of toe-end anchoring type bore hole external packer of pipe - Google Patents
A kind of toe-end anchoring type bore hole external packer of pipe Download PDFInfo
- Publication number
- CN204098848U CN204098848U CN201420523301.8U CN201420523301U CN204098848U CN 204098848 U CN204098848 U CN 204098848U CN 201420523301 U CN201420523301 U CN 201420523301U CN 204098848 U CN204098848 U CN 204098848U
- Authority
- CN
- China
- Prior art keywords
- central tube
- lower contact
- packing element
- bushing pipe
- pipe
- 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 - Lifetime
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 23
- 238000012856 packing Methods 0.000 claims abstract description 44
- 241000239290 Araneae Species 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 abstract description 16
- 238000007789 sealing Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 9
- 238000011010 flushing procedure Methods 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a kind of toe-end anchoring type bore hole external packer of pipe, comprise the top connection be tightly connected successively, central tube and lower contact, the outer cover of described central tube is equipped with bushing pipe, the outer cover of bushing pipe is equipped with packing element, the top of described packing element is connected with top connection, packing element bottom is connected with slip spider, this slip spider is fixed on the middle part of bushing pipe, described bushing pipe bottom is also arranged with cone, this cone is connected by shear pin with bushing pipe, also be provided with between described slip spider and cone and be provided with slips, the tube wall of the central tube of described central tube and lower contact junction is provided with inlet opening, the top of described bushing pipe is provided with card tooth, the bottom of described top connection is provided with lock ring, described card tooth and lock ring engage each other.Because set packer of the present utility model achieves setting separately and locking of packing element, the independent locking of anchor mechanism, therefore, in fracturing process, even if grappling loosens the sealing performance also not affecting packing element.
Description
Technical field
The utility model relates to oilfield completion technique field, is related specifically to a kind of toe-end anchoring type bore hole external packer of pipe.
Background technology
Packer refers to have elastic sealing elements; and annular space between the tubing string of packing various sizes whereby and well and between tubing string; and isolated payzone; to control to produce (note) liquid; the downhole tool of protective casing; being widely used in the mine such as oil well, gas well, being used for packing bottom oil, gas, water layer, is a kind of down-hole plugging instrument safe and reliable, with low cost, multiple functional, applied widely.Packer can with other downhole tool with the use of, carry out temporary blocking, permanent shutoff, selective shut-off and snubbing serving etc.
Packer is primarily of part compositions such as executing agency, anchor mechanism, retaining mechanism, sealing mechanisms.
Wherein, executing agency is used for realization and sets and deblocking, sets power resources according to executing agency, and packer is mainly divided into that machinery sets, fluid power sets two classes, and executing agency sets shear pin by cut-out and realizes setting, and realizes deblocking by cutting off deblocking shear pin.
Anchor mechanism generally includes upper cone, lower cone and dual-grip, is used for packer to be anchored on setting position.
Retaining mechanism usually by exterior central tube, set shear pin, deblocking shear pin and various internal locking assembly (as conical ring, lock ring, snap close or lock refer to buckle and ratchet mechanism) and form, for after packer setting, make to sit packer and fixedly remain on the state of setting.
Sealing mechanism generally includes packing element, spacer ring, thrust block pad and glue tube base, is used for after setting, and makes the two ends up and down of packer present sealing partition state.
Such as patent publication No. is the Chinese patent of CN201354617Y, discloses a kind of Self-expanding packer, and it is primarily of box cupling, base tube, shelves ring and expansion packing element composition.Box cupling is connected with at the threaded upper ends of base tube, there is screw thread box cupling inside, be used for splicing sleeve, it is characterized in that: around the outer wall of base tube, cover has expansion packing element, a grade ring is fixed with at the two ends of expansion packing element, shelves ring adopts snap ring to fix between base tube, and the other end of shelves ring is handed over around the outer wall of cylinder end in expansion.The effect of shelves ring is fixed expansion packing element, and in addition, shelves ring has the effect of supporting positive cover tubing string, improves and sets quality.
The Self-expanding packer that this utility model provides is connected with sleeve pipe by box cupling, is connected, G.I.H by the external screw thread of base tube bottom with sleeve pipe.Expansion packing element wraps on base tube outer wall, and run into oil when expansion packing element or expand after meeting water, expansion packing element sets on the inwall of outer layer sleeve.
Although do not need under the Self-expanding packer that this utility model provides to carry out suppressing or carrying out any other terrestrial operation after oil reservoir, expansion packing element is met oil or is met water automatic expansion and sets in down-hole, packing element can adapt to the shape of irregular bore hole after expanding, realize oil well delamination subsection efect, but in process of production, can there is the phenomenon of wriggling in tubing string, packer can be produced with tubing string mobile, thus cause sealing effectiveness to reduce.
One section that and for example delivers on " petroleum machinery " the 7th phase in 1998 the 29th page article being entitled as " DGY341-114 type water injection packer ", discloses a kind of water injection well packer.Its structure comprises well-flushing, setting, sealing, locking and mechanism and the parts such as deblocking, its shortcoming be when using must and hydraulic anchor with the use of, can not be used alone, make equipment increase cost and improve, complicated operation.
If be used alone this packer, due to without anchoring device, packer can be made under differential pressure action to produce vertically move, the damage of seal member may be caused, make packer shortening in application life, affect oil well production, packer location also can be caused inaccurate, cause the phenomenons such as channelling, both do not reached the object of layering, caused formation damage again.
For another example the one section of Chinese patent being CN2426521Y for above question patent publication number discloses a kind of anchoring packer capable of flushing, comprise the anchoring packer capable of flushing of well-flushing, setting, sealing, locking and the mechanism such as deblocking and parts, set up anchoring device, comprise cone, slips, slip sleeve and shear pin, cone has dovetail groove, and cone matches with the dovetail groove of slips; Slip sleeve there is square hole, in order to install slips; Shear pin is used for fixing the relative position of slip sleeve and cone.
The well-flushing parts of anchoring packer capable of flushing are made up of joint ring, well-flushing cover, inner central tube, well-flushing piston, well-flushing seat and trapezoidal potted component.Respectively have two seals circle inside and outside joint ring, well-flushing piston makes well-flushing pathway closure after having 30 ° of conical surfaces and well-flushing seat close contact.Have trapezoidal potted component in well-flushing seat, it is seal well washing passage when water filling.Joint ring and well-flushing piston are contained in well-flushing cover, and well-flushing seat and well-flushing cover are interconnected.
Seal member is made up of packing element and spacer ring.Seal member is made up of upper piston, envelope seat shear pin, inner central tube and gate ring.
Retaining mechanism is made up of lock tube, lock ring.
During onsite application, form water distribution tubing string by downhole tools such as packer, injection well downhole flow regulator, ball seats.During packer setting, in oil pipe, add hydraulic pressure, hydraulic pressure acts on lower piston through inner central tube lower opening, sets shear pin and is cut off, lower piston moves down, on lower piston, the conical surface stops moving down after contacting with deblocking lock dog, and upper piston moves, compression packing element, cut off and cone sets shear pin, slips opens and sleeve pipe grappling, and control packer and vertically move, the retaining mechanism of lower end prevents slips rollback.
Although the packer that this utility model provides can effectively control vertically moving of packer, make packing position accurate, but, its packer is that a snap locks packing element and slips simultaneously, after the Long-Time Service of down-hole, because packing element elasticity weakens, create external diameter permanent deformation, axially the thrust that slips produces is reduced, many instruments of having given up, because packing element is also in sealing, and anchorage force is inadequate, when there is displacement in anchoring members, the movement of seal member can be driven simultaneously, sealing performance is declined, and long-term movement can cause the damage of seal member, packer is caused to lose efficacy, increase cost.
Utility model content
In order to overcome above problem, the utility model provides a kind of toe-end anchoring type bore hole external packer of pipe.
The utility model solves the technical scheme that its technical problem adopts:
A kind of toe-end anchoring type bore hole external packer of pipe, comprise the top connection be tightly connected successively, central tube and lower contact, the outer cover of described central tube is equipped with bushing pipe, the outer cover of bushing pipe is equipped with packing element, the top of described packing element is connected with top connection, packing element bottom is connected with slip spider, this slip spider is fixed on the middle part of bushing pipe, described bushing pipe bottom is also arranged with cone, this cone is connected by shear pin with bushing pipe, also be provided with between described slip spider and cone and be provided with slips, the tube wall of the central tube of described central tube and lower contact junction is provided with inlet opening, it is characterized in that: the top of described bushing pipe is provided with card tooth, the bottom of described top connection is provided with lock ring, described card tooth and lock ring engage each other.
The outside of described lower contact is provided with cutting ferrule, and lower contact is connected by unpacking shear pin with cutting ferrule, and cutting ferrule is connected with back of the body cap near one end of unpacking shear pin, and back of the body cap is fixedly connected with lower contact, and the bottom of lower contact is provided with jump ring, and described cutting ferrule and jump ring are meshed.
Described top connection, central tube and lower contact are fixedly connected sequentially.
Described top connection, central tube and lower contact are threaded successively.
Described top connection, central tube and lower contact Flange joint successively.
The beneficial effects of the utility model are:
The utility model is provided with card tooth on the top of described bushing pipe, is provided with lock ring in the bottom of described top connection, and described card tooth and lock ring engage each other, and achieves setting separately and locking of packing element.
Be provided with jump ring in the bottom of described lower contact, and the cutting ferrule being positioned at lower contact outside is meshed, realizes the independent locking of packer anchor mechanism.
Because set packer of the present utility model achieves setting separately and locking of packing element, the independent locking of anchor mechanism, therefore, in fracturing process, even if grappling loosens the sealing performance also not affecting packing element.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the section of structure of the utility model toe-end anchoring type bore hole external packer of pipe.
Fig. 2 is card dental structure sectional drawing in the utility model toe-end anchoring type bore hole external packer of pipe.
Description of reference numerals: 1, top connection; 2, central tube; 3, bushing pipe; 4, lock ring; 5, packing element; 6, slip spider; 7, slips; 8, shear pin; 9, cone; 10, cutting ferrule; 11, jump ring; 12, unpacking shear pin; 13, cap is carried on the back; 14, lower contact;
2.1, central tube bottom inlet opening; 3.1, card tooth.
Detailed description of the invention
In order to overcome in fracturing process, loosening of grappling, make the problem of the sealing performance of packing element moving influence packing element, present embodiments provide toe-end anchoring type bore hole external packer of pipe as shown in Figure 1, comprise the top connection 1 be tightly connected successively, central tube 2 and lower contact 14, the outer cover of described central tube 2 is equipped with bushing pipe 3, the outer cover of bushing pipe 3 is equipped with packing element 5, the top of described packing element 5 is connected with top connection 1, packing element 5 bottom is connected with slip spider 6, this slip spider 6 is fixed on the middle part of bushing pipe 3, described bushing pipe 3 bottom is also arranged with cone 9, this cone 9 is connected by shear pin 8 with bushing pipe 3, also be provided with between described slip spider 6 and cone 9 and be provided with slips 7, the tube wall of the central tube 2 of described central tube 2 and lower contact 14 junction is provided with inlet opening 2.1, as shown in Figure 2 the top of described bushing pipe 3 is provided with card tooth 3.1, the bottom of described top connection 1 is provided with lock ring 4, described card tooth 3.1 and lock ring 4 engage each other.
The utility model is provided with card tooth 3.1 on the top of described bushing pipe 3, is provided with lock ring 4 in the bottom of described top connection 1, and described card tooth 3.1 and lock ring 4 engage each other, and achieves setting separately and locking of packing element.
Cutting ferrule 10 is provided with in the outside of described lower contact 14, lower contact 14 is connected by unpacking shear pin 12 with cutting ferrule 10, and cutting ferrule 10 is connected with back of the body cap 13 near one end of unpacking shear pin 12, and back of the body cap 13 is fixedly connected with lower contact 14, the bottom of lower contact 14 is provided with jump ring 11, and cutting ferrule 10 and jump ring 11 are meshed.Realize the independent locking of packer anchor mechanism.
Because set packer of the present utility model achieves setting separately and locking of packing element, the independent locking of anchor mechanism, therefore, in fracturing process, even if grappling loosens the sealing performance also not affecting packing element.
Described top connection 1, central tube 2 and lower contact 14 are fixedly connected sequentially.
Described top connection 1, central tube 2 and lower contact 14 are threaded successively.
Described top connection 1, central tube 2 and lower contact 14 Flange joint successively.
Packer of the present utility model to set process as follows:
During use, the utility model is arranged on the design attitude of fracturing string, when fracturing packer sets, pressurizes in fracturing string with liquid.Liquid enters in the hydraulic cavities that is made up of the inwall of the outer wall of central tube 2 and lower contact 14 by the inlet opening 2.1 on central tube 2, unpacking shear pin 12 is cut off, cone 9 is up, and cone 9 is linked together by shear pin and bushing pipe 3, and bushing pipe 3 is connected with slip spider 6, so, slip spider 6 promotes packing element 5, and compression packing element 5 realizes setting, and the card tooth 3.1 being now positioned at the top of bushing pipe 3 and the lock ring 4 being positioned at top connection 1 bottom are engaged, maintain the compressive state of packing element 5, packer completes and sets.
The anchoring process of packer of the present utility model is as follows:
Continue to pressurize to central tube 2, when the pressure that hydraulic cylinder produces exceedes shear pin 8 maximum shear strength, shear pin 8 is cut off, cone 9 and slip spider 6 produce relative displacement, slips 7 is outwards ejected and grappling by force, cutting ferrule 10 and jump ring 11 engage, and maintain the anchoring states of slips 7, realize the anchoring process of packer.
Claims (5)
1. a toe-end anchoring type bore hole external packer of pipe, comprise the top connection (1) be tightly connected successively, central tube (2) and lower contact (14), the outer cover of described central tube (2) is equipped with bushing pipe (3), the outer cover of bushing pipe (3) is equipped with packing element (5), the top of described packing element (5) is connected with top connection (1), packing element (5) bottom is connected with slip spider (6), this slip spider (6) is fixed on the middle part of bushing pipe (3), described bushing pipe (3) bottom is also arranged with cone (9), this cone (9) is connected by shear pin (8) with bushing pipe (3), also be provided with between described slip spider (6) and cone (9) and be provided with slips (7), the tube wall of the central tube (2) of described central tube (2) and lower contact (14) junction is provided with inlet opening (2.1), it is characterized in that: the top of described bushing pipe (3) is provided with card tooth (3.1), the bottom of described top connection (1) is provided with lock ring (4), described card tooth (3.1) and lock ring (4) engage each other.
2. toe-end anchoring type bore hole external packer of pipe according to claim 1, it is characterized in that, the outside of described lower contact (14) is provided with cutting ferrule (10), lower contact (14) is connected by unpacking shear pin (12) with cutting ferrule (10), cutting ferrule (10) is connected with back of the body cap (13) near one end of unpacking shear pin (12), back of the body cap (13) is fixedly connected with lower contact (14), and the bottom of lower contact (14) is provided with jump ring (11), and described cutting ferrule (10) and jump ring (11) are meshed.
3. toe-end anchoring type bore hole external packer of pipe according to claim 1, is characterized in that, described top connection (1), central tube (2) and lower contact (14) are fixedly connected sequentially.
4. toe-end anchoring type bore hole external packer of pipe according to claim 3, is characterized in that, described top connection (1), central tube (2) and lower contact (14) are threaded successively.
5. toe-end anchoring type bore hole external packer of pipe according to claim 3, is characterized in that, described top connection (1), central tube (2) and lower contact (14) Flange joint successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523301.8U CN204098848U (en) | 2014-09-12 | 2014-09-12 | A kind of toe-end anchoring type bore hole external packer of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523301.8U CN204098848U (en) | 2014-09-12 | 2014-09-12 | A kind of toe-end anchoring type bore hole external packer of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204098848U true CN204098848U (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420523301.8U Expired - Lifetime CN204098848U (en) | 2014-09-12 | 2014-09-12 | A kind of toe-end anchoring type bore hole external packer of pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204098848U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252827A (en) * | 2017-07-14 | 2019-01-22 | 中国石油化工股份有限公司 | A kind of anti-receding device and the packer comprising it |
| CN115012874A (en) * | 2022-07-19 | 2022-09-06 | 中国石油天然气集团有限公司 | High-temperature and high-pressure open hole packer with anchoring mechanism |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
| CN119466708A (en) * | 2024-12-18 | 2025-02-18 | 大庆市华禹石油机械制造有限公司 | A fracturing pipe fitting |
-
2014
- 2014-09-12 CN CN201420523301.8U patent/CN204098848U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252827A (en) * | 2017-07-14 | 2019-01-22 | 中国石油化工股份有限公司 | A kind of anti-receding device and the packer comprising it |
| CN115680551A (en) * | 2021-07-29 | 2023-02-03 | 中国石油天然气股份有限公司 | Load compensation packer |
| CN115012874A (en) * | 2022-07-19 | 2022-09-06 | 中国石油天然气集团有限公司 | High-temperature and high-pressure open hole packer with anchoring mechanism |
| CN115012874B (en) * | 2022-07-19 | 2024-02-23 | 中国石油天然气集团有限公司 | A high-temperature and high-pressure open-hole packer with its own anchoring mechanism |
| CN119466708A (en) * | 2024-12-18 | 2025-02-18 | 大庆市华禹石油机械制造有限公司 | A fracturing pipe fitting |
| CN119466708B (en) * | 2024-12-18 | 2025-05-16 | 大庆市华禹石油机械制造有限公司 | Fracturing pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |