CN2697305Y - Lock block type hydraulic releasing gadget - Google Patents
Lock block type hydraulic releasing gadget Download PDFInfo
- Publication number
- CN2697305Y CN2697305Y CN 200420003368 CN200420003368U CN2697305Y CN 2697305 Y CN2697305 Y CN 2697305Y CN 200420003368 CN200420003368 CN 200420003368 CN 200420003368 U CN200420003368 U CN 200420003368U CN 2697305 Y CN2697305 Y CN 2697305Y
- Authority
- CN
- China
- Prior art keywords
- lock dog
- piston
- parent tube
- tubing string
- box cupling
- 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 - Fee Related
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Abstract
The utility model relates to a lock block type hydraulic releasing gadget for the completion of a combined well, belonging to oil drilling machinery. The lock block type hydraulic releasing gadget is composed of a casing tube (1), a parent tube (2), a small sealing element (3), a piston (4), a special casing coupling (5), a locking piece (6), fastening pins (7) of an anti-rotation sleeve, the anti-rotation sleeve (8), a ball seat (9), a large sealing element (10), shearing pins (11), a steel ball (12), a push rod (13), a reducer joint (14) of the casing tube and an inner reducer joint (15). The lock block type hydraulic releasing gadget which is only provided with the shearing pins in the system and is applied to the combined well, a side drilling well and a horizontal well is of simple and safe operation and is of reliability.
Description
A kind of lock dog formula hydraulic releasing tool that is used for compound well completion of technical field belongs to the oil drilling machine class.
Background technology is present, one of subject matter that exists in compound well, sidetracked hole and horizontal well completion is the problem of effectively giving up of sending into tubing string and casing string both at home and abroad, be in particular in that control element is more in the system, such as having a plurality of shear pins or back-off mechanism in the system, cause complicated operation, cause easily: (1) tubing string does not also put in place, owing to tubing string is lowered to reasons such as pressure excitement in the process, the control element action causes in advance and gives up, and causes the downhole safety accident; (2) in normal construction, difficult assurance the opportunity that starts each control element causes control element boot sequence or action time to go wrong, and causes the difficulty of giving up.
The summary of the invention the purpose of this utility model provides a kind of compound well, sidetracked hole, horizontal well completion tail pipe post of being used for and reliably hangs, sends into the lock dog formula hydraulic releasing tool that tubing string is reliably given up.
The purpose of this utility model is to realize like this.It is by sleeve pipe (1), parent tube (2), little seal (3), piston (4), unusual casing box cupling (5), lock dog (6), anti-rotation is overlapped fastening pin (7), anti-pivoted housing (8), ball seat (9), big seal (10), shear pin (11), steel ball (12), push rod (13), annular tube reducer union (14) and interior reducer union (15) are formed, its assembled relation is: the upper end splicing sleeve (1) of unusual casing box cupling (5), lower end splicing sleeve reducer union (14), overlap fastening pin (7) by anti-rotation and will prevent that pivoted housing (8) is fixed on unusual casing box cupling (5) the inside, form outer tubing string in the lump with upper-part, reducer union (15) in parent tube (2) connects down, by shear pin (11) piston (4) is limited in parent tube (2) lining, gap between parent tube (2) and the piston (4) is respectively by little seal (3) and big seal (10) sealing, ball seat (9) is connected piston (4) lower end, push rod (14) is on interior reducer union (15), steel ball (12) seat is on ball seat (9), form interior tubing string in the lump with upper-part, interior tubing string is connected by lock dog (6) with outer tubing string, and lock dog (6) is subjected to parent tube (2) simultaneously, piston (4), the constraint of anti-pivoted housing (8) and unusual casing box cupling (5).
The utility model has mainly utilized throwing steel ball (12) fraud pressure, hydraulic pressure to cut off shear pin (11), and piston (4) moves down, and slides under the lock dog (6) in the space of parent tube (2) and piston (4) formation, thereby realizes effectively giving up of interior tubing string and outer tubing string.
A kind of shear pin (11) is only arranged in the utility model, and simple to operate, hydraulic control is reliable, construction safety, can be applicable to the interior pipe method well cementation of compound well, sidetracked hole, horizontal well, is a kind of reliable releasing tool.
Description of drawings Fig. 1 is a lock dog formula hydraulic releasing tool schematic diagram.Below in conjunction with accompanying drawing enforcement of the present utility model is described further.
Specific embodiment lock dog formula hydraulic releasing tool as shown in Figure 1, it is by sleeve pipe 1, parent tube 2, little seal 3, piston 4, unusual casing box cupling 5, lock dog 6, anti-rotation is overlapped fastening pin 7, anti-pivoted housing 8, ball seat 9, big seal 10, shear pin 11, steel ball 12, push rod 13, annular tube reducer union 14 and interior reducer union 15 are formed, wherein lock dog 6, the material type of parent tube 2 and unusual casing box cupling 5 requires to select for use the material more than the 35CrMo, piston 4 is displaced downwardly on the push rod 13 thickness and the length in the space of formation between back and the parent tube 2 should be greater than the thickness and the length of lock dog 6, its assembled relation is: the upper end splicing sleeve 1 of unusual casing box cupling 5, lower end splicing sleeve reducer union 14, overlap fastening pin 7 by anti-rotation and will prevent that pivoted housing 8 is fixed on unusual casing box cupling 5 the insides, form outer tubing string in the lump with upper-part, reducer union 15 in parent tube connects for 2 times, by shear pin 11 piston 4 is limited in 2 li of parent tubes, gap between parent tube 2 and the piston 4 is respectively by little seal 3 and 10 sealings of big seal, ball seat 9 is connected piston 4 lower ends, push rod 14 is on interior reducer union 15,12 of steel balls are on ball seat 9, form interior tubing string in the lump with upper-part, interior tubing string is connected by lock dog 6 with outer tubing string, and lock dog 6 is subjected to parent tube 2 simultaneously, piston 4, the constraint of anti-pivoted housing 8 and unusual casing box cupling 5.
Specific implementation process is: when this instrument is lowered to desired depth, elder generation's pitching 12 frauds are pressed, hydraulic pressure is cut off shear pin 11, this moment, piston 4 moved down seat on push rod 13, had just formed bigger space between parent tube 2 and the piston 4, and lock dog 6 slides in this space in that action of gravity is following, thereby tubing string and outer tubing string gives up in realizing, push rod 13 is simultaneously steel ball 12 jack-up, and intraluminal fluid stream circulation canal is unimpeded in making, and can proceed subsequent job.
Claims (3)
1, a kind of lock dog formula hydraulic releasing tool, it is characterized in that: it is by sleeve pipe (1), parent tube (2), little seal (3), piston (4), unusual casing box cupling (5), lock dog (6), anti-rotation is overlapped fastening pin (7), anti-pivoted housing (8), ball seat (9), big seal (10), shear pin (11), steel ball (12), push rod (13), annular tube reducer union (14) and interior reducer union (15) are formed, its assembled relation is: the upper end splicing sleeve (1) of unusual casing box cupling (5), lower end splicing sleeve reducer union (14), overlap fastening pin (7) by anti-rotation and will prevent that pivoted housing (8) is fixed on unusual casing box cupling (5) the inside, form outer tubing string in the lump with upper-part, reducer union (15) in parent tube (2) connects down, by shear pin (11) piston (4) is limited in parent tube (2) lining, gap between parent tube (2) and the piston (4) is respectively by little seal (3) and big seal (10) sealing, ball seat (9) is connected piston (4) lower end, push rod (14) is on interior reducer union (15), steel ball (12) seat is on ball seat (9), form interior tubing string in the lump with upper-part, interior tubing string is connected by lock dog (6) with outer tubing string, and lock dog (6) is subjected to parent tube (2) simultaneously, piston (4), the constraint of anti-pivoted housing (8) and unusual casing box cupling (5).
2, lock dog formula hydraulic releasing tool according to claim 1 is characterized in that: the material type of lock dog (6), parent tube (2) and unusual casing box cupling (5) requires to select for use the material more than the 35CrMo.
3, lock dog formula hydraulic releasing tool according to claim 1 is characterized in that: piston (4) is displaced downwardly to push rod (13) and goes up the thickness in the space of formation between back and the parent tube (2) and length thickness and the length greater than lock dog (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003368 CN2697305Y (en) | 2004-02-06 | 2004-02-06 | Lock block type hydraulic releasing gadget |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420003368 CN2697305Y (en) | 2004-02-06 | 2004-02-06 | Lock block type hydraulic releasing gadget |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697305Y true CN2697305Y (en) | 2005-05-04 |
Family
ID=34767284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420003368 Expired - Fee Related CN2697305Y (en) | 2004-02-06 | 2004-02-06 | Lock block type hydraulic releasing gadget |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697305Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790893A (en) * | 2015-02-12 | 2015-07-22 | 中国海洋石油总公司 | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture |
| CN109236220A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | One kind is exempted to be buckled to rotary tail running tool and method |
| CN109854213A (en) * | 2019-03-18 | 2019-06-07 | 中国石油化工股份有限公司 | Set damage repairs the sand control pipe of well |
-
2004
- 2004-02-06 CN CN 200420003368 patent/CN2697305Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790893A (en) * | 2015-02-12 | 2015-07-22 | 中国海洋石油总公司 | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture |
| CN109236220A (en) * | 2018-11-28 | 2019-01-18 | 中国石油集团工程技术研究院有限公司 | One kind is exempted to be buckled to rotary tail running tool and method |
| CN109236220B (en) * | 2018-11-28 | 2023-09-12 | 中国石油天然气集团有限公司 | Back-off-free rotary tail pipe running tool and method |
| CN109854213A (en) * | 2019-03-18 | 2019-06-07 | 中国石油化工股份有限公司 | Set damage repairs the sand control pipe of well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Jinpan Science &. Technology Co., Ltd., Panjin Zhang Yan Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Panjin Gold Technology Co., Ltd. Zhang Yan Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050504 Termination date: 20120206 |