CN202215175U - Explosive cutting pup joint - Google Patents
Explosive cutting pup joint Download PDFInfo
- Publication number
- CN202215175U CN202215175U CN2011203202774U CN201120320277U CN202215175U CN 202215175 U CN202215175 U CN 202215175U CN 2011203202774 U CN2011203202774 U CN 2011203202774U CN 201120320277 U CN201120320277 U CN 201120320277U CN 202215175 U CN202215175 U CN 202215175U
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- China
- Prior art keywords
- cutting
- hole
- explosive
- cylindrical shell
- installation head
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- Expired - Fee Related
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- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model relates to the technical field of explosive cutting devices in oil field, in particular to an explosive cutting pup joint which comprises a cylinder body, a mounting head, a detonating cord and cutting dynamite. The mounting head, the outer diameter of which is less than that of the cylinder body, is fixed at the right end of the cylinder body; a boss is arranged on the inner side of the right part of the cylinder body; the cylinder body and the mounting head are internally provided with a large through hole and a small through hole communicated with each other from left to right; the large through hole on the left of the boss is internally provided with the cutting dynamite; the cylinder body corresponding to the cutting dynamite is provided with a cutting groove; the cutting dynamite is internally provided with a detonating cord through hole; and a detonating cord is arranged in the large through hole, the small through hole and the detonating cord through hole. The explosive cutting pup joint is reasonable and compact in structure and safe and convenient to use; by adding the cutting groove on the cylinder body, the explosive can generate weak points; after a jet cutter is initiated, the cutting dynamite is detonated by the detonating cord, and the cutting pup joint is very easily cut off orderly from the cutting groove; and underground cable and instruments can be taken out smoothly after explosive cutting is completed, so that the working efficiency and the quality are improved greatly.
Description
Technical field
the utility model relates to oil field blast cutter sweep technical field, is a kind of blast cutting pipe nipple.
Background technology
In petroleum exploration and development wellbore construction process, lock of tool drilling often happens occasionally
, from the cutting of often exploding of the needs of technology; Downhole cable and instrument are proposed smoothly, but, cutting pipe nipple external diameter is increased because of past the turning up of blast cutting back cutting pipe nipple; On carry downhole cable and instrument and meet card, cause downhole cable and well instrument to put forward the problem of not coming out, have only in this case cable to be carried and take off from this weakness of cable head; Lose instrument into the down-hole; In particular cases have to put off cable, bring difficulty for the work of following step, work quality and operating efficiency all can't be guaranteed.
Summary of the invention
the utility model provides a kind of blast cutting pipe nipple, has overcome the deficiency of above-mentioned prior art, and it can effectively solve carries downhole cable and meet with instrument and block the problem that causes downhole cable and instrument to propose smoothly on the blast cutting back.
The technical scheme of
the utility model realizes through following measure: a kind of blast cutting pipe nipple comprises cylindrical shell, installation head, detonating fuse and cutting explosive; The right-hand member of cylindrical shell is fixed with the installation head of external diameter less than the cylindrical shell external diameter; There is boss right part inboard at cylindrical shell, and large through-hole and the small through hole that is connected arranged respectively in cylindrical shell and installation head from left to right, in the large through-hole of boss left, cutting explosive is installed; On the pairing cylindrical shell of cutting explosive, cutting groove is arranged; The detonating fuse through hole is arranged in cutting explosive, in large through-hole, small through hole and detonating fuse through hole, detonating fuse is installed, external screw thread is arranged on installation head.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
It is wide outside and narrow inside trapezoidal that the cross section of
above-mentioned cutting groove can be.
The left end of
above-mentioned cylindrical shell can have internal thread.
On the right-hand installation head of
above-mentioned external screw thread seal groove can be arranged, sealing ring is installed in seal groove.
On the right-hand installation head of
above-mentioned external screw thread the two seals groove can be arranged.
the utility model reasonable and compact in structure, safe and convenient to use; Through on cylindrical shell, adding a cutting groove; Make it produce weakness; Behind the cutting cartridge that detonates, ignite cutting explosive through detonating fuse, be easy to the cutting pipe nipple is neatly cut off from cutting groove; Smoothly downhole cable and instrument are proposed after blast has been cut, therefore greatly improved operating efficiency and work quality.
Description of drawings
accompanying drawing 1 is looked the sectional structure sketch map for the master of the utility model.
Coding in
accompanying drawing is respectively: 1 is cylindrical shell, and 2 is installation head, and 3 is detonating fuse, and 4 is cutting explosive, and 5 is boss, and 6 is large through-hole, and 7 is small through hole, and 8 is cutting groove, and 9 is external screw thread, and 10 is internal thread, and 11 is seal groove, and 12 is sealing ring.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description 1, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this blast cutting pipe nipple comprises cylindrical shell 1, installation head 2, detonating fuse 3 and cutting explosive 4; The right-hand member of cylindrical shell 1 is fixed with the installation head 2 of external diameter less than cylindrical shell 1 external diameter; There is boss 5 right part inboard at cylindrical shell 1, and the large through-hole 6 and small through hole 7 that are connected are arranged respectively in cylindrical shell 1 and installation head 2 from left to right, in the large through-hole 6 of boss 5 lefts, cutting explosive 4 is installed; On cutting explosive 4 pairing cylindrical shells 1, cutting groove 8 is arranged; The detonating fuse through hole is arranged in cutting explosive 4, in large through-hole 6, small through hole 7 and detonating fuse through hole, detonating fuse 3 is installed, external screw thread 9 is arranged on installation head 2.Because cylindrical shell 1 is provided with and the corresponding cutting groove 8 in cutting explosive 4 positions, make it produce weakness, behind the cutting cartridge that detonates, ignite cutting explosive 4 through detonating fuse 3, be easy to cylindrical shell 1 is neatly cut off from cutting groove 8.
Can according to actual needs above-mentioned blast cutting pipe nipple be done further to optimize or/and improve:
Shown in accompanying drawing 1, as required, it is wide outside and narrow inside trapezoidal that the cross section of cutting groove 8 is
.
for the ease of installation and removal, have internal thread 10 at the left end of cylindrical shell 1 shown in accompanying drawing 1.
in order to increase sealing, have seal groove 11 on right-hand installation head 2 of external screw thread 9 shown in accompanying drawing 1, sealing ring 12 is installed in seal groove 11, as required, on the right-hand installation head 2 of external screw thread 9 two seals groove 11 are arranged preferably.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of the utility model most preferred embodiment: the position that the utility model that will be connected with cutting cartridge with cable and downhole instrument are lowered to setting; Starter-generator; The charging, cutting cartridge detonates; Ignite cutting explosive 4, cylindrical shell 1 is neatly cut off from cutting groove 8, smoothly downhole cable and instrument are proposed after blast has been cut.
Claims (7)
1. a blast cutting pipe nipple is characterized in that comprising cylindrical shell, installation head, detonating fuse and cutting explosive; The right-hand member of cylindrical shell is fixed with the installation head of external diameter less than the cylindrical shell external diameter; There is boss right part inboard at cylindrical shell, and large through-hole and the small through hole that is connected arranged respectively in cylindrical shell and installation head from left to right, in the large through-hole of boss left, cutting explosive is installed; On the pairing cylindrical shell of cutting explosive, cutting groove is arranged; The detonating fuse through hole is arranged in cutting explosive, in large through-hole, small through hole and detonating fuse through hole, detonating fuse is installed, external screw thread is arranged on installation head.
2. it is wide outside and narrow inside trapezoidal that blast according to claim 1 cutting pipe nipple, the cross section that it is characterized in that cutting groove are.
3. blast cutting pipe nipple according to claim 1 and 2 is characterized in that the left end of cylindrical shell has internal thread.
4. blast cutting pipe nipple according to claim 1 and 2 is characterized in that on right-hand installation head of external screw thread seal groove being arranged, and sealing ring is installed in seal groove.
5. blast cutting pipe nipple according to claim 3 is characterized in that on right-hand installation head of external screw thread seal groove being arranged, and sealing ring is installed in seal groove.
6. blast cutting pipe nipple according to claim 4 is characterized in that on right-hand installation head of external screw thread the two seals groove being arranged.
7. blast cutting pipe nipple according to claim 5 is characterized in that on right-hand installation head of external screw thread the two seals groove being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203202774U CN202215175U (en) | 2011-08-30 | 2011-08-30 | Explosive cutting pup joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203202774U CN202215175U (en) | 2011-08-30 | 2011-08-30 | Explosive cutting pup joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215175U true CN202215175U (en) | 2012-05-09 |
Family
ID=46014435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203202774U Expired - Fee Related CN202215175U (en) | 2011-08-30 | 2011-08-30 | Explosive cutting pup joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215175U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307958A (en) * | 2014-09-02 | 2015-01-28 | 西安交通大学 | Metal rod pipe material blanking device for explosive explosion loading method |
| CN107701138A (en) * | 2017-11-16 | 2018-02-16 | 中国海洋石油总公司 | A kind of smart well pipeline cutting tool |
| CN106121572B (en) * | 2016-08-22 | 2018-05-18 | 王莉 | Fusible formula safety joint instrument |
| CN111878002A (en) * | 2020-07-30 | 2020-11-03 | 北方斯伦贝谢油田技术（西安）有限公司 | A thread loosening bullet for tubular column coupling in pit |
-
2011
- 2011-08-30 CN CN2011203202774U patent/CN202215175U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307958A (en) * | 2014-09-02 | 2015-01-28 | 西安交通大学 | Metal rod pipe material blanking device for explosive explosion loading method |
| CN106121572B (en) * | 2016-08-22 | 2018-05-18 | 王莉 | Fusible formula safety joint instrument |
| CN107701138A (en) * | 2017-11-16 | 2018-02-16 | 中国海洋石油总公司 | A kind of smart well pipeline cutting tool |
| CN107701138B (en) * | 2017-11-16 | 2019-11-01 | 中国海洋石油集团有限公司 | A kind of smart well pipeline cutting tool |
| CN111878002A (en) * | 2020-07-30 | 2020-11-03 | 北方斯伦贝谢油田技术（西安）有限公司 | A thread loosening bullet for tubular column coupling in pit |
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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: 20120509 Termination date: 20160830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |