CN204299489U - A kind of expansion tube construction safety trip device - Google Patents
A kind of expansion tube construction safety trip device Download PDFInfo
- Publication number
- CN204299489U CN204299489U CN201420664280.1U CN201420664280U CN204299489U CN 204299489 U CN204299489 U CN 204299489U CN 201420664280 U CN201420664280 U CN 201420664280U CN 204299489 U CN204299489 U CN 204299489U
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- top connection
- lower contact
- expansion tube
- type projection
- utility
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Abstract
The utility model relates to a kind of bulged tube technology field, particularly a kind of expansion tube construction safety trip device.The top connection lower end of this device to be inserted in lower contact and is connected by pin, sealed by O RunddichtringO between top connection and lower contact, top connection outer wall circumference is designed with multiple " J " type projection, chute is formed between the plurality of " J " type projection, on the inwall of lower contact, circumference is designed with multiple bumping square, mobile in the chute that this bumping square can be formed between multiple " J " type projection.The utility model achieves the object of high pressure sealing and safety trip, having the safe and reliable feature with being easy to again dock, decreasing potential safety hazard, handled easily, greatly reducing construction risk.Overcome the deficiency that existing expansion tube safety joint can not be thrown off smoothly and can not again be docked.
Description
Technical field:
The utility model relates to a kind of bulged tube technology field, particularly a kind of expansion tube construction safety trip device.
Background technology:
At present, the technology that domestic expansion tube is applied to the aspects such as casing damaged well reparation, liner completion, drilling liner cementing suspension has reached its maturity, and each related research institutes has started to carry out early-stage Study to single diameter drilling technology.In view of the operation principle of bulged tube technology hydraulic expanding tube, expansion tube blocks up at the expansion tube sealing end that places one's entire reliance upon that is radially expanded of down-hole the high-pressure chamber formed between the bloat tool in expansion tube.In work progress, if if any one screw thread of expansion tube occurs to leak or body exists mass defect and all can cause project failure, especially in open hole well, the serious accident that well and drilling tool are scrapped more can be caused when relating to cementing operating mode.Although we can adopt various measures usually reduce down-hole accident odds, we still need to take measures in advance to tackle complex situations, thus reduce the economic loss brought when down hole problem occurs.
Application number be 200920157958.6 " safety joint of expandable casing " patent provide in the construction of a kind of expansion tube and tackle the safety joint of fortuitous event, principle is: when down-hole have an accident and use safety joint of having to discard downhole tool time, first central tube is rotated forward at well head by equipment such as hydraulic tongs, when the moment of torsion of central tube transmission reach pin in safety joint default cut off moment of torsion after, pin is cut off, because back-off screw thread is left-hand thread, continue to rotate forward central tube, now safety joint starts back-off, judge whether back-off completes according to the situation of change of suspending weight.But its safety joint has the following disadvantages: 1, do not set up defences rotation mechanism in safety joint lower end, and so when well mouth rotary central tube, the downhole tool part below safety joint rotates thereupon, safety joint place can not back-off smoothly; 2, safety joint back-off screw thread is left-hand thread, can not bear comparatively high pulling torque, limited swivel in the process of going into the well; 3, safety joint back-off screw thread is left-hand thread, can not realize again the function that lower brill docking proceeds operation.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of expansion tube construction safety trip device, the arrangement achieves the object of high pressure sealing and safety trip, there is the safe and reliable feature with being easy to again dock, decreasing potential safety hazard, handled easily, greatly reduces construction risk.Overcome the deficiency that existing expansion tube safety joint can not be thrown off smoothly and can not again be docked.
Technical solution adopted in the utility model is: a kind of expansion tube construction safety trip device, is made up of top connection and lower contact; Top connection lower end to be inserted in lower contact and is connected by pin, sealed by O RunddichtringO between top connection and lower contact, top connection outer wall circumference is designed with multiple " J " type projection, chute is formed between the plurality of " J " type projection, on the inwall of lower contact, circumference is designed with multiple bumping square, mobile in the chute that this bumping square can be formed between multiple " J " type projection.
The beneficial effects of the utility model are: the utility model achieves the object of high pressure sealing and safety trip, having the safe and reliable feature with being easy to again dock, decreasing potential safety hazard, handled easily, greatly reducing construction risk.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is upper and lower splice failure step one schematic diagram.
Fig. 3 is upper and lower splice failure step 2 schematic diagram.
Fig. 4 is upper and lower splice failure step 3 schematic diagram.
Fig. 5 is upper and lower splice failure step 4 schematic diagram.
Detailed description of the invention:
As shown in Figure 1, a kind of expansion tube construction safety trip device, is made up of top connection 1 and lower contact 4; Top connection 1 lower end to be inserted in lower contact 4 and is connected by pin 2, is sealed, ensure the high pressure sealing in operation between top connection 1 and lower contact 4 by O RunddichtringO 3.Top connection 1 outer wall circumference is designed with 4 " J " type projections 5, and form chute between these 4 " J " type projections 5, on the inwall of lower contact 4, circumference is designed with 4 bumping squares 6, mobile in the chute that this bumping square 6 can be formed between 4 " J " type projections 5.
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, after assembling, in the chute that bumping square 6 is formed between 4 " J " type projections 5, can be good at transmitting torque.In operation, after the chute pressing down top connection 1 while cutting off pin 2 moves downward along the bumping square 6 of lower contact 4, be rotated counterclockwise feeding tubing string, last upper lifting pipe post completes the separation of lower contact.If according to underground working, need again lower brill docking to continue operation, then only need turn clockwise after lower contact 4 arrives precalculated position and send into tubing string, carry drilling tool on finally can passing through, can judge whether docking completes according to the situation of change of suspending weight.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. an expansion tube construction safety trip device, is made up of top connection (1) and lower contact (4); It is characterized in that: top connection (1) lower end is inserted in lower contact (4) and also connected by pin (2), by O RunddichtringO (3) sealing between top connection (1) and lower contact (4), top connection (1) outer wall circumference is designed with multiple " J " type projection (5), chute is formed between the plurality of " J " type projection (5), on the inwall of lower contact (4), circumference is designed with multiple bumping square (6), mobile in the chute that this bumping square (6) can be formed between multiple " J " type projection (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664280.1U CN204299489U (en) | 2014-11-07 | 2014-11-07 | A kind of expansion tube construction safety trip device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664280.1U CN204299489U (en) | 2014-11-07 | 2014-11-07 | A kind of expansion tube construction safety trip device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299489U true CN204299489U (en) | 2015-04-29 |
Family
ID=53105035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420664280.1U Expired - Fee Related CN204299489U (en) | 2014-11-07 | 2014-11-07 | A kind of expansion tube construction safety trip device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299489U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832111A (en) * | 2015-05-12 | 2015-08-12 | 杜晓瑞 | Multifunctional drilling tubular column joint |
-
2014
- 2014-11-07 CN CN201420664280.1U patent/CN204299489U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832111A (en) * | 2015-05-12 | 2015-08-12 | 杜晓瑞 | Multifunctional drilling tubular column joint |
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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: 20150429 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |