CN202810747U - Skirt type generating cone - Google Patents
Skirt type generating cone Download PDFInfo
- Publication number
- CN202810747U CN202810747U CN 201220389728 CN201220389728U CN202810747U CN 202810747 U CN202810747 U CN 202810747U CN 201220389728 CN201220389728 CN 201220389728 CN 201220389728 U CN201220389728 U CN 201220389728U CN 202810747 U CN202810747 U CN 202810747U
- Authority
- CN
- China
- Prior art keywords
- fish
- generating
- fishing
- cone
- generating cone
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 241000251468 Actinopterygii Species 0.000 abstract description 20
- 238000005553 drilling Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Images
Abstract
The utility model relates to oil drilling fishing tools, in particular to a skirt type generating cone. The tool comprises a body, wherein the inner wall of the upper end of the body is provided with tubing string feeding connection threads in a machining mode, the inner wall of the middle-lower portion of the body is provided with buckle generating threads in a machining mode, and the lower portion of the body is designed to be a spiral skirt type guiding ring surface with conical degrees. By the aid of the skirt type generating cone, fish tops can be guided into the buckle generating threads when fish single edges are tightly attached to a casing wall, and thus the success rate of generating cone fishing is enhanced. The defects that the fish tops of the existing generating cone can not enter the inside of the generating cone when the fish single edges are tightly attached to the casing wall, and the success rate of generating cone fishing is low are overcome.
Description
Technical field:
The utility model relates to a kind of oil drilling fishing tool, particularly a kind of train of dress formula female coupling tap.
Background technology:
For drilling well down-hole fish the general designation of the various drill and petroleum extraction toolses of the down-hole that comes off (in the activitiess such as drilling well, well workover, wreck or), salvaging is optimal processing mode, female coupling tap is by salvaging at top of fish position thread making, has the advantage that to bear larger salvaging tonnage, be one of the most frequently used fishing tool, be the indispensable accident treatment instrument of construction team.Yet in the thread making process, when fish is monolateral when being close to casing wall, the fish top of fish usually occurs and can't enter female coupling tap inside, the situation of can't successful thread making salvaging, fishing success ratio is low.
The utility model content:
The technical problems to be solved in the utility model provides a kind of train of dress formula female coupling tap, and this instrument has been realized can guiding top of fish to enter in the thread making screw thread when fish is monolateral when being close to casing wall, improves the female coupling tap fishing success ratio.The fish top of fish can't enter female coupling tap inside, the deficiency that fishing success ratio is low when fish is monolateral when being close to casing wall to have overcome existing female coupling tap.
Technical solution adopted in the utility model is: a kind of train of dress formula female coupling tap comprises body; Be processed with on the inwall of body upper end and send into the tubing string connecting thread, be processed with the thread making screw thread on the inwall of body middle and lower part, the body bottom is designed to spiral train of dress type guiding anchor ring with tapering.
The beneficial effects of the utility model are: the utility model is designed to the spiral mode of guiding anchor ring with the train of dress type of tapering owing to having adopted with the body bottom, thereby have when fish is monolateral and can guide when being close to casing wall top of fish to enter function in the thread making screw thread, improve the female coupling tap fishing success ratio.
Description of drawings:
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Accompanying drawing is structural representation of the present utility model.
The specific embodiment:
As shown in drawings, a kind of train of dress formula female coupling tap comprises body 1; Be processed with on the body 1 upper end inwall and send into tubing string connecting thread 2, be processed with thread making screw thread 3 on the body 1 middle and lower part inwall, body 1 bottom is designed to spiral train of dress type guiding anchor ring 4 with tapering.
When needs are salvaged with the utility model by send into tubing string connecting thread 2 be connected to salvage send into drilling tool below, be lowered into 5～20cm place, top on fish top, turn on pump flushing 1 circulating cycle of top of fish, transfer fishing string to contacting, press 1～5 ton with top of fish, rotate and salvage drilling tool; When transferring, rotating fishing string, even top of fish is close to the borehole wall, also can enter in the thread making screw thread 3 along certain edge of train of dress type guiding anchor ring 4; In the nominal torque of fishing string, continue the rotation fishing string, in this process, the pressure of the drill remains in 5 tons; After moment of torsion arrives nominal torque and stablizes, stop operating, thread making is complete; Then carry the salvaging drilling tool on slowly, under the specified tonnage of salvaging drilling tool, put on repeatedly to let live and movingly carry out unfreezing, after suspending weight is transferred suddenly, determine whether to salvage successfully according to the suspending weight situation of change; As confirm to salvage unsuccessful, can repeat above-mentioned thread making process; If salvage successfully, then trip out fishing string, finish fishing.
Be understandable that, more than about specific descriptions of the present utility model, only for the utility model being described and being not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. a train of dress formula female coupling tap comprises body (1); It is characterized in that: be processed with on the inwall of body (1) upper end and send into tubing string connecting thread (2), be processed with thread making screw thread (3) on the inwall of body (1) middle and lower part, body (1) bottom is designed to spiral train of dress type guiding anchor ring (4) with tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389728 CN202810747U (en) | 2012-08-07 | 2012-08-07 | Skirt type generating cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389728 CN202810747U (en) | 2012-08-07 | 2012-08-07 | Skirt type generating cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810747U true CN202810747U (en) | 2013-03-20 |
Family
ID=47869645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389728 Expired - Fee Related CN202810747U (en) | 2012-08-07 | 2012-08-07 | Skirt type generating cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878004A (en) * | 2020-01-21 | 2020-11-03 | 大庆油田有限责任公司 | Rifling type sucker rod centralizer and oil pipe reverse circulation overshot |
-
2012
- 2012-08-07 CN CN 201220389728 patent/CN202810747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878004A (en) * | 2020-01-21 | 2020-11-03 | 大庆油田有限责任公司 | Rifling type sucker rod centralizer and oil pipe reverse circulation overshot |
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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: 20130320 Termination date: 20140807 |
|
| EXPY | Termination of patent right or utility model |