CN202220580U - Combined injection tool for external casing packer - Google Patents
Combined injection tool for external casing packer Download PDFInfo
- Publication number
- CN202220580U CN202220580U CN 201120312404 CN201120312404U CN202220580U CN 202220580 U CN202220580 U CN 202220580U CN 201120312404 CN201120312404 CN 201120312404 CN 201120312404 U CN201120312404 U CN 201120312404U CN 202220580 U CN202220580 U CN 202220580U
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- spring guide
- hole
- pipe
- spring
- central tube
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Abstract
The utility model provides a combined injection tool for an external casing packer, which solves the problems that a leather cup of an external casing packer used in completion operation for a horizontal well is not placed in the middle of a horizontal section and cannot be sealed at present, a valve system and the like in long-term use are easy to leak, sealing performance is reduced, and the like. The combined injection tool comprises a rubber cylinder, a central pipe, a spring guide pipe and a spring, the rubber cylinder, the spring guide pipe and the spring are positioned outside the central pipe, a middle pressing sleeve is arranged at one end of the rubber cylinder, a connecting mechanism is arranged among the spring guide pipe, the spring and the middle pressing sleeve, a through hole is arranged on the spring guide pipe, an injection piston with a through hole is arranged on the outer side of the spring guide pipe, matched with the through hole of the spring guide pipe and connected with the spring, and the wall of the central pipe is provided with a through hole led to the space among the central pipe, the middle pressing sleeve and the spring guide pipe from a pipe cavity of the central pipe. The combined injection tool has the advantages of fine seat sealing effect and capability of realizing external casing filling and packing, and is mainly used for completion operation for the horizontal well and a side-tracking well.
Description
Technical field
The utility model relates to the packer element of using in the technology such as segmentation completion or the segmentation card envelope of a kind of horizontal well or sidetracked hole, particularly a kind of injection device that uses with the external packer of pipe combination.
Background technology
At present, in the completion practice of drilling engineering,,, often need segmentation completion or segmentation card envelope because the mining conditions of different well sections is different particularly in the horizontal well completion operation.Existing external packer of pipe utilizes the envelope assembly that expands to realize the seat envelope with mud or other well liquid mostly, and what adopted at the envelope that expands assembly two ends is the cup packer packing.The subject matter that this packing device exists is: 1, because the action of gravity of tubing string, cup packer is not placed in the middle in horizontal segment, can't seal, and can not beat pressure, and the tube sealing external packer can't expand; 2, with the external packer of pipe of mud filling, along with the prolongation of time, valve is that the leakage that formula packing element etc. is located causes that sealing performance reduces, thus cause gas, water etc. too early awl advance.
Summary of the invention
In order to solve the deficiency that exists when above-mentioned packing device uses, the utility model provides a kind of can improve seat envelope effect and the external packer of pipe combination implantation tool of realizing the outer filling packing of pipe.
A kind of external packer of pipe combination implantation tool of the utility model; Comprise packing element, central tube, spring guide, spring; Described packing element, spring guide, spring are positioned at outside the described central tube; Gland in the middle of described packing element one end is provided with; Be provided with bindiny mechanism between described spring guide and described spring and the described middle gland, described spring guide is provided with through hole, and is provided with the injection piston that has through hole that cooperates with this through hole in the described spring guide outside; This injection piston is connected with described spring, and the tube wall of described central tube is provided with the through hole that is led to space between this pipe and described centre gland, the described spring guide by this pipe tube chamber.The effect that described middle gland is set at described packing element one end is through gland in the middle of described, outside described central tube, constitutes the passage that liquid injects the described packing element of envelope that expands.The effect that described bindiny mechanism is set between described spring guide and described middle gland is through this bindiny mechanism; Make described spring guide and described in the middle of gland described central tube outside between the liquid injection channel that constitutes of annular space communicate and be one, and make described spring guide and described centre gland can do integrated moving.Described spring with described in the middle of bindiny mechanism is set between the gland effect be make described spring one end with described in the middle of gland is fixedly connected, make described spring and described middle gland can do integrated mobile.In that through hole and the effect that the injection piston that has through hole cooperate with this through hole is set are set on the described spring guide is through hole to be set on through described spring guide; Liquid gets into described injection piston; Thereby realize that this injection piston of hydraulic-driven moves with respect to described spring guide; Through hole on the described injection piston is communicated by not communicating to become with through hole on the described spring guide; Thereby make liquid can be injected into gland and outer space described spring guide in the middle of described, realize the outer seat envelope of pipe.The effect that described injection piston is connected with described spring is after fluid pressure descends; Pass through spring; Make described injection piston reset; Do not communicate thereby through hole on the described injection piston is become by communicating with through hole on the described spring guide, the liquid of closing the outer space of gland and described spring guide in the middle of described injects path.The effect that described through hole is set on the tube wall of described central tube is through this through hole, make this pipe tube chamber can with this pipe with described in the middle of between the gland, described spring guide the space communicate.
Preferably be provided with the seat envelope piston that matches with this through hole in the through hole of described central tube, between described central tube and described seat envelope piston, be provided with anti-rollback mechanism.The effect of described seat envelope piston is before central tube injects liquid, described through hole to be played sealing process, thereby the outer fluid passage of central tube is played a protective role; After injecting liquid, the pressure through liquid is opened this envelope piston, guarantees that liquid gets into this passage.The effect that described anti-rollback mechanism is set is after described seat envelope piston is opened by liquid, makes this envelope piston return again, thereby prevents to produce the situation generation that passage injects resistance because of this envelope piston return.
Preferably be provided with shear pin between described central tube and the described seat envelope piston, preferably be provided with shear pin between described spring guide and the described injection piston.The effect that described shear pin is set is to connect described seat envelope piston in location and described injection piston through described shear pin; And they just can be opened when hydraulic coupling reaches certain value, thereby give security for injecting outer envelope of well bloated sealing tube of liquid and realization pipe.
Bindiny mechanism between described spring guide and described spring and the described middle gland comprises adapter sleeve, adjustable ring; Described adapter sleeve is connected with described adjustable ring; Described adapter sleeve is connected with described middle gland, and described adjustable ring is arranged at the end of described spring.This bindiny mechanism has advantage simple in structure, easy to assembly.
The beneficial effect of the utility model: because through described packing element, central tube outer ring space and through hole, make liquid can expand the described packing element of envelope and make packing element and the borehole wall between produce excellent contact, thereby produce good bloated envelope effect; Through described spring guide through hole and injection piston hole, curable materials such as water of hydration mud can also realize that described fluid injection is to managing outer filling packing in addition.
So the utlity model has the advantage that the seat envelope is effective, can realize managing outer filling packing.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the utility model embodiment superstructure sketch map;
Fig. 2 is the utility model embodiment substructure sketch map.
Among the figure: 1, top connection, 2, the top connection cap, 3, rubber cylinder pressing cap, 4, packing element, 5, central tube, 6, middle gland, 7, shear pin; 8, lock ring, 9, seat envelope piston, 10, transition joint, 11, adapter sleeve, 12, adjustable ring, 13, spring, 14, spring guide; 15, inject piston, 16, shear pin, 17, interstage sleeve, 18, middle gland, 19, packing element, 20, rubber cylinder pressing cap, 21, central tube; 22, lower contact cap, 23, lower contact, 24, through hole, 25, through hole, 26, through hole, 27, step.
The specific embodiment
A kind of external packer of pipe combination implantation tool as shown in Figure 1; Comprise top connection 1, top connection cap 2, rubber cylinder pressing cap 3,20, packing element 4,19, central tube 5,21, spring guide 14, spring 13, adapter sleeve 11, lower contact cap 22, lower contact 23; Described packing element 4,19, spring guide 14, spring 13 are positioned at outside the described central tube 5,21; Described central tube 5, be fixedly connected through transition joint 10 between 21; Described top connection 1 is connected with rubber cylinder pressing cap 3 through top connection cap 2; Lower contact 23 is connected with rubber cylinder pressing cap 20 through lower contact cap 22; Gland 6 in the middle of described packing element 4 one ends are provided with is provided with bindiny mechanism between described spring guide 14 and described spring 13 and the described middle gland 6, and described spring guide 14 is provided with through hole 25; And be provided with the injection piston 15 that has through hole 26 that cooperates with this through hole 25 in described spring guide 14 outsides; This injection piston 15 is connected with described spring 13 and is connected with described spring guide 14 through shear pin 16, the tube wall of described central tube 5 be provided with by this pipe tube chamber lead to this pipe with described in the middle of the through hole 24 in space between the gland 6, described spring guide 14, be provided with at through hole 24 places of described central tube 5 match with this through hole 24 seal piston 9; Described seat envelope piston 9 is connected with described central tube 5 through shear pin 7; Between described central tube 5 and described seat envelope piston 9, be provided with anti-rollback mechanism, described spring guide 14 is provided with interstage sleeve 17 away from gland 6 one ends in the middle of described, and an end ennation of this interstage sleeve 17 is positioned at described spring guide 14 inboards; The other end of this interstage sleeve 17 links to each other with an end of the described central tube 21 outer center glands 18 that are provided with, and these center gland 18 other ends link to each other with the described central tube 21 outer packing elements 19 that are provided with; Bindiny mechanism between described spring guide 14 and described spring 13 and the described middle gland 6 comprises adapter sleeve 11, adjustable ring 12; Described adapter sleeve 11 is connected with described adjustable ring 12; Described adapter sleeve 11 is connected with described middle gland 6, and described adjustable ring 12 is arranged at the end of described spring 13; Described anti-rollback mechanism comprises that being arranged at described seat seals the lock ring 8 on the piston 9 and be arranged at the step 27 on the described central tube 5.That this anti-rollback mechanism has is simple in structure, manufacture and design conveniently, effective advantage.
Operating principle: utilize and to send into tubing string and external packer of pipe is made up implantation tool be lowered into design attitude; In described central tube, inject cement paste, when the pressure of cement paste reaches certain value, cut off described shear pin 7; Move on the described seat envelope piston 9; And be stuck on upper center tube 5 steps 27 by described lock ring 8, cement paste enters into gap and the gap between packing element 19 and the central tube 21, the described packing element 4,19 of seat envelope respectively between described packing element 4 and the central tube 5; Move seat envelope on the described packing element 4, and drive described in the middle of gland 6, adapter sleeve 11, spring guide 14, adjustable ring 12 and spring 13 move up.Described packing element 19 moves down seat envelope, and drive described in the middle of gland 18, interstage sleeve 17 move down; Through hole 25 on the described spring guide 14 is abdicated the position, and cement paste gets into.Continue to promote the pressure of cement paste, when pressure reaches certain value, cut off the shear pin 16 between described injection piston 15 and the spring guide 14; Under the effect of pressure, on continuing, moves in described injection piston 15, make that through hole 25 aligns on through hole 26 and the described spring guide 14 on this injections piston 15; Cement paste is injected into the space of 4,19 packings of packing element thus; Enter into external packer of pipe, realized the bloated envelope of cement paste of external packer of pipe thus, accomplish the envelope operation of expanding.After the pressure release, described injection piston 15 moves down under the effect of described spring 13, closes the cement injection passage.Can realize making up the deblocking of implantation tool packing element after this device pressure release, but, therefore can realize permanent layering, improve the sealing effectiveness and the period of validity of external packer of pipe greatly because external packer of pipe has adopted the bloated envelope of cement paste.
Claims (2)
1. an external packer of pipe makes up implantation tool; Comprise packing element, central tube, spring guide, spring; Described packing element, spring guide, spring are positioned at outside the described central tube; It is characterized in that described packing element one end is provided with middle gland; Be provided with bindiny mechanism between described spring guide and described spring and the described middle gland, described spring guide is provided with through hole, and is provided with the injection piston that has through hole that cooperates with this through hole in the described spring guide outside; This injection piston is connected with described spring, and the tube wall of described central tube is provided with the through hole that is led to space between this pipe and described centre gland, the described spring guide by this pipe tube chamber.
2. a kind of external packer of pipe combination implantation tool as claimed in claim 1 is characterized in that being provided with the seat envelope piston that matches with this through hole in the through hole of described central tube, between described central tube and described seat envelope piston, is provided with anti-rollback mechanism.
3. a kind of external packer of pipe combination implantation tool as claimed in claim 2 is characterized in that being provided with shear pin between described central tube and the described seat envelope piston, is provided with shear pin between described spring guide and the described injection piston.
4. like claim 1,2 or 3 described a kind of external packer of pipe combination implantation tools; It is characterized in that the bindiny mechanism between described spring guide and described spring and the described middle gland comprises adapter sleeve, adjustable ring; Described adapter sleeve is connected with described adjustable ring; Described adapter sleeve is connected with described middle gland, and described adjustable ring is arranged at the end of described spring.
5. a kind of external packer of pipe combination implantation tool as claimed in claim 2 is characterized in that described anti-rollback mechanism comprises that being arranged at described seat seals the lock ring on the piston and be arranged at the step on the described central tube.
6. a kind of external packer of pipe combination implantation tool as claimed in claim 4 is characterized in that described spring guide is provided with interstage sleeve away from gland one end in the middle of described, and it is inboard that an end ennation of this interstage sleeve is positioned at described spring guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120312404 CN202220580U (en) | 2011-08-25 | 2011-08-25 | Combined injection tool for external casing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120312404 CN202220580U (en) | 2011-08-25 | 2011-08-25 | Combined injection tool for external casing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220580U true CN202220580U (en) | 2012-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120312404 Expired - Fee Related CN202220580U (en) | 2011-08-25 | 2011-08-25 | Combined injection tool for external casing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220580U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
| CN114658385A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | Hydraulic expansion type open hole packer |
-
2011
- 2011-08-25 CN CN 201120312404 patent/CN202220580U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658385A (en) * | 2020-12-22 | 2022-06-24 | 中国石油化工股份有限公司 | Hydraulic expansion type open hole packer |
| CN114658385B (en) * | 2020-12-22 | 2024-03-26 | 中国石油化工股份有限公司 | Hydraulic expansion type open hole packer |
| CN113338841A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Mechanical packer |
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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 |
Granted publication date: 20120516 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |