CN2700539Y - Orientating and positioning device for delivering whipstock into branch well - Google Patents
Orientating and positioning device for delivering whipstock into branch well Download PDFInfo
- Publication number
- CN2700539Y CN2700539Y CN 200420030141 CN200420030141U CN2700539Y CN 2700539 Y CN2700539 Y CN 2700539Y CN 200420030141 CN200420030141 CN 200420030141 CN 200420030141 U CN200420030141 U CN 200420030141U CN 2700539 Y CN2700539 Y CN 2700539Y
- Authority
- CN
- China
- Prior art keywords
- keying
- whipstock
- locking key
- orientating
- well
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to an orientating and positioning device for delivering a whipstock into branched wells, belonging to the drilling underground tool. In the well completion operation, a whipstock is needed to be delivered into the orientating and positioning device, and then the drilling technique of the branched well can be realized, but the prior art is of complicated device and inconvenient use. In the utility model, an upper orientating device, a central pipe keying seat connected with the upper orientating device and a keying connected with the keying seat by an axial pin are connected with a spring on a keying pusher mechanism via the keying, which makes the other end of the spring positioned in a guide shoe. So when the utility model is used, as long as the device is lowered down to a windowing position in the well, the keying can be automatically locked, which ensures drilling tools not to move integrally. When drilling tools are pressed down, releasing operation for carrying out windowing operation can be realized. At the time of salvaging, a salvaging anchor can be used for disconnecting the keying and can drag the whipstock and a delivering device from the well. Since the device can be automatically guided and locked and the device can assure the accurate operation orientation of the successive construction such as windowing, sidetracking and reentering branch wellbore and therefore, the utility model can be widely generalized and applied in the drilling of the branched well.
Description
Technical field:
The utility model relates to the directed location of a kind of Multilateral Wells whipstock feeder, belongs to drilling well downhole tool class.
Background technology:
In the completion practice of oil (water) well, use whipstock to send into directed positioner, just can be implemented in the well and utilize the sidetracking mode, just can get out two or more branch well holes, at present, when carrying out the wellbore construction of Multilateral Wells, to hold three keys in the existing technology, it is the window sealing, the reenterability of mechanics integrality and branch well hole, but at present, domestic Multilateral Wells example seldom, and the external branch well window place design of string pipe complex structure of implementing, corresponding brill completion supporting technology is had relatively high expectations, and difficulty of construction is big.
The utility model content:
The purpose of this utility model is in order to overcome above-mentioned shortcoming, and the directed location of a kind of Multilateral Wells whipstock that provides feeder utilizes this device can realize giving up and goes up bearing unit to cooperate with the following bearing unit that presets the shaft bottom and finish directed positioning function and make it to reach the tubing string anti-rotating function.
The utility model is to realize like this.
To achieve these goals, whipstock described in the utility model is by orientation location feeder, forms by the change button of screwed connection and the last bearing unit of bottom.The described bearing unit of going up is connecting the central tube locking key, and locking key is contained on the locking key seat, and fixes with pivot pin, and this locking key also is close to spring one end above the locking key pushing mechanism, and the described spring other end is located in above the interior spring base of guide shoe.
At the locking key pushing mechanism back side boss is arranged, the locking key pushing mechanism can slide up and down along the keyseat groove, and there is a box drain groove in the front, and its locking key is stuck on the step of box drain groove.
The utility model operating principle is:
When the utility model being lowered in the well desired depth position with tubing string, because borehole diameter enlarges, locking key in the bearing unit is opened under spring action, and be stuck on the sleeve pipe, hang the location thereby finish, at this moment, can press down and send into tubing string, tubing string under pressure, the pin of will giving up is again cut off, finish the construction of giving up, when salvaging, be lowered to compensation salvaging thatch (special tool) and press down tubing string, tubing string drives the locking key pushing mechanism again and moves down under certain pressure, locking key is rotated around pivot pin, thereby realized unlocking function, at this moment whipstock and feeder are pulled out in well by the upper lifting pipe post.
The utility model compared with prior art has distinguishing feature:
The utility model is owing to installed locking key pushing mechanism and locking key in device, utilize drilling tool to send into the shaft bottom during use, press down certain tonnage pressure then and cut off the whipstock pin of giving up, just can finish the job execution of giving up, and play the effect of drilling tool anti-rotation, and guaranteeing that window sidetracking creeps into accurately and reliably easily and the follow-up reentry construction operation of well workover carries out, this device can be led the position after putting in place automatically transferring, lock, guaranteed the reentry of window sidetracking and branch well hole.
Description of drawings:
Among the figure by 1, guide shoe, 2, spring base, 4, central tube locking key seat, 3, spring, 5, locking key, 6, pivot pin, 7, the locking key pushing mechanism, 8, go up bearing unit, 9, become button and form.
Figure is: structural representation of the present utility model.
The specific embodiment:
The utility model is provided by following examples:
Below in conjunction with accompanying drawing the utility model is described further:
Among the figure: the top of device is to become button 9 usefulness screw threads to link to each other with last bearing unit 8, last bearing unit 8 links to each other with central tube locking key seat 4, locking key 5 is connected on the central tube locking key seat 4 by pivot pin 6, and locking key 5 relies on locking key pushing mechanism 7 and spring 3 to finish and locks release and limit function.
Locking key 5 in device, can be implemented in desired depth back the automatically locking of locking key that put in place, thereby having guaranteed in construction that device integral body is not upper and lower moves and tubing string does not rotate, following pressure pipe post, give certain tonnage pressure, can cut off whipstock and hang pin, finish and give up, implement the window sidetracking operation.During salvaging, only need transfer to compensate and salvage thatch and separate unlock key, just can pull whipstock and feeder out from the down-hole.
The suspension of the present utility model and the operating process of giving up all rely on ground to send into drill string, transfer to give the depthkeeping degree after, leading the position automatically and press down drill string and finish construction by bearing unit.
Claims (2)
1, the directed location of a kind of Multilateral Wells whipstock feeder is made up of by the change button (9) of screwed connection and the last bearing unit (8) of bottom whipstock; It is characterized in that: go up bearing unit (8) and link to each other with central tube locking key seat (4), connecting a locking key (5) with pivot pin (6) above the locking key seat, the spring (3) that locking key and locking key promote above the pushing mechanism (7) is close to, and the other end of this spring is located in above the interior spring base (2) of guide shoe (1).
2, the directed location of a kind of Multilateral Wells whipstock according to claim 1 feeder, it is characterized in that: there is boss at locking key pushing mechanism (7) back side, this groove above keyseat (4) slides up and down, in the front of locking key pushing mechanism one box drain groove is arranged, its locking key (5) is stuck on the step of box drain groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030141 CN2700539Y (en) | 2004-01-13 | 2004-01-13 | Orientating and positioning device for delivering whipstock into branch well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030141 CN2700539Y (en) | 2004-01-13 | 2004-01-13 | Orientating and positioning device for delivering whipstock into branch well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2700539Y true CN2700539Y (en) | 2005-05-18 |
Family
ID=34772085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030141 Expired - Fee Related CN2700539Y (en) | 2004-01-13 | 2004-01-13 | Orientating and positioning device for delivering whipstock into branch well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2700539Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402794C (en) * | 2006-09-13 | 2008-07-16 | 辽河石油勘探局 | Branched well selective guiding in tool |
| CN111827882A (en) * | 2019-04-23 | 2020-10-27 | 中国石油化工股份有限公司 | Mechanical branch well reentry device |
| CN113279713A (en) * | 2020-02-19 | 2021-08-20 | 中国石油化工股份有限公司 | Branch window supporting device |
-
2004
- 2004-01-13 CN CN 200420030141 patent/CN2700539Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402794C (en) * | 2006-09-13 | 2008-07-16 | 辽河石油勘探局 | Branched well selective guiding in tool |
| CN111827882A (en) * | 2019-04-23 | 2020-10-27 | 中国石油化工股份有限公司 | Mechanical branch well reentry device |
| CN111827882B (en) * | 2019-04-23 | 2022-03-08 | 中国石油化工股份有限公司 | Mechanical branch well reentry device |
| CN113279713A (en) * | 2020-02-19 | 2021-08-20 | 中国石油化工股份有限公司 | Branch window supporting device |
| CN113279713B (en) * | 2020-02-19 | 2022-11-25 | 中国石油化工股份有限公司 | Branch window strutting arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |