CN2611596Y - Well pipe string guide diverter - Google Patents
Well pipe string guide diverter Download PDFInfo
- Publication number
- CN2611596Y CN2611596Y CN 03242174 CN03242174U CN2611596Y CN 2611596 Y CN2611596 Y CN 2611596Y CN 03242174 CN03242174 CN 03242174 CN 03242174 U CN03242174 U CN 03242174U CN 2611596 Y CN2611596 Y CN 2611596Y
- Authority
- CN
- China
- Prior art keywords
- spring
- steering
- pawl
- turn
- branch
- 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 - Lifetime
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Abstract
An steering device of an internal pipe column diverter is composes of a main body, a branch body, an offsetting spring, a steering shoe, a steering spring, a steering head, a steering shaft and a lower joint. When the main body is placed downhole, the steering shoe is vertical to the main body via the offsetting spring, and a ball-type shaft is employed to make the lower joint deviate via the steering effect of the steering spring and the main body to achieve the intention that the internal pipe column enters into the branch borehole, thereby implementing downhole operation. The utility model is simple in structure, reliable in working, and convenience in field real application, which resolves the question that it is difficult to place pipes in branch boreholes while implementing oil-production operation, thereby the utility model can be widely used in the oil production operations in oil field branch wells.
Description
Technical field:
The utility model relates to a kind of well casing post guider transfer of going into, and belongs to well recovery downhole tool class.
Background technology:
Along with oil field development and deep, its exploitation difficulty increases thereupon, in order to be fit to the construction needs that recover the oil, many mouthfuls of branch well holes have appearred piercing in a bite well in recent years, thereafter, the technology of in Multilateral Wells, recovering the oil, along with China's multilateral well production technique is increasingly mature, oil producing operation is in continuous increase in the branch well hole, traditional transfer can not select to enter the branch of Multilateral Wells purpose, and handle numerous and diverse, performance is unreliable, construction is complicated, and a kind ofly can realize the simple transfer that utilizes the well casing post first, be not reported.
The utility model content:
The utility model purpose is in order to overcome above-mentioned shortcoming, and provide a kind ofly go into well casing post guider transfer.This device is connected oil well by utilization goes into and turns to pawl and ball-type axle and back-moving spring above the well casing post, realizes that the tubing string selectivity enters the branch of Multilateral Wells purpose.Solved the difficult problem that the underground work flow string enters Multilateral Wells.
Utility model is achieved in that
This device is to be equipped with to turn to pawl on a body, turns to the pawl lower end a lower contact by screwed connection.The described claw shape that turns to is oval handle shape, turns to pawl to be fixed to the medium position of body on support and back-moving spring handle with back-moving spring.The described pawl medium position place that turns to has one to turn to spring shaft, has one to turn to spring on this axle, and spring one end is inserted in the square groove of support.
Inboard, described back-moving spring two ends respectively has a spring catch to be fixed on the marginal point that turns to pawl.Described lower contact upper end a steering head with screwed connection, is bound up by screw thread and body lower end in the steering head upper end.One circular square groove is arranged in the described steering head, be shelved with the ball-type axle in the groove.
When this reality has novel work, at first will go into well casing post guider transfer and insert under the well casing post, when going into the well casing post when going into the well, because the main hole internal diameter is less than the external diameter that turns to the vertical body of pawl, Gu this turns to pawl upwards to open, back-moving spring deforms.When going into well casing post guider when entering branch well hole, device passes through branch well hole earlier, carry into the well casing post on below the branch well hole by this then, when turning to pawl to arrive branch well hole, owing to exist the main hole space of branch well hole greater than other main hole internal diameter, under action of reset spring, make when turning to the vertical body of pawl on device continues, to carry by branch well hole, because diminishing of working space, turn to pawl just to turn over downwards, turn to the steering head on spring and the body to be in contact with one another this moment, be in spring the diminishing between support and the steering head this moment owing to working space, and deform, and produce elastic force thus, act on the steering head, utilize the ball-type axle that lower contact is deflected, when going into the well casing post when transferring, promptly enter the purpose Multilateral Wells, because purpose branch internal diameter is less than the main hole internal diameter, turn over so turn under the pawl continuation, turn to spring between support and steering head, to continue distortion, when distortion acquires a certain degree, turn to the square groove step of spring above support to break away from, from then on, turn to spring to break away from support, lose the strong point, turn to camber of spring to disappear, steering head elastic force is disappeared, lower contact is owing to turning to the spring force effect to be offset, at this moment, can carry out the interior underground work of branch well hole.
The utility model is compared with technology is arranged, the positive effect that is had is: because the pawl that turns to of this device is turning under spring and the action of reset spring, make the ball-type axle of steering head the inside push lower contact in the branch well hole automatically, thereby can realize utilizing the well casing post to enter the Multilateral Wells purpose merely, because this apparatus structure is simple, reliable operation, construction are simple and direct, be convenient to on-the-spot practical application, can be oil field Multilateral Wells exploitation and underground work convenience is provided.
Description of drawings:
Fig. 1: the utility model structural representation
Fig. 2: the utility model A portion enlarged drawing
Among the figure by body 1, support 2, back-moving spring axle 3, back-moving spring 4, spring catch 5, turn to pawl 6, turn to spring 7, turn to spring shaft 8, steering head 9, ball-type axle 10, lower contact 11 form.
Among Fig. 1: body 1 shape is cone-shaped, step is arranged in the upper port, there is the pin thread of interior screw thread and running string top to join on the step, be drilled with two back-moving spring holes in pyramid tip position, body lower end, back-moving spring axle 3 inserts the inside, is fixing the back-moving spring 4 and the support 2 that turn to pawl 6 and steering head top.It is an angle of 90 degrees that there is a square groove one angle in support 2 bottoms.Circular hole is arranged on the carriage center, and its back-moving spring axle 3 passes from this hole.The described pawl 6 that turns to is a rectangular round handle shape, turns to spring shaft 8, is fixing one with this axle and turning to spring 7 turning to pawl 6 middle parts to be drilled with, and one of its medi-spring is inserted in the square groove of support 2 when assembling.Described back-moving spring 4 is fixed on and is " eight " word shape in the back-moving spring axle 3, has two spring catch 5 to be fixed in the both ends of the spring point and turns to above the pawl 6, and this pin can stop spring deflection, can make to turn to pawl 6 to turn to.Turn to the axial head 9 on spring 7 and the body 1 to contact with each other, can utilize ball-type axle 10, lower contact 11 is offset.
The cone bottom of body is a steering head 9, be bound up on the body lower end by screw thread, the steering head top is the fin dovetail shaped, steering head 9 lower ends link with screw thread and lower contact 11, on the inner side step of steering head 9, shelve a ball-type axle 10, sphere and steering head and lower contact close proximity, ball-type axle and lower contact 11 are and are slidingly matched, utilize ball-type axle 10 that lower contact is offset, promptly when going into the well casing post when transferring, because the branch well hole internal diameter less than the main borehole diameter, turns to pawl 6 to turn over down, turn to spring between support 2 and steering head, to produce distortion, when turning to spring to break away from support, do not turn to camber of spring to disappear owing to there is the strong point to make, the elastic force that acts on steering head 9 like this disappears, be lower contact skew, but the tubing string on this moment use device carry out the operation in the branch well hole.
Claims (2)
1, a kind ofly going into well casing post guider transfer, is to be equipped with one to turn to pawl (6) on body (1), and the lower end a lower contact (11) by screwed connection; It is characterized in that the described claw shape that turns to is oval handle shape, turn to pawl to be fixed to the medium position of body (1) on support (2) and back-moving spring (4) by back-moving spring axle (3), turning to pawl (6) to have one to turn to spring shaft (8) near the medium position place, be equipped with one on the spring shaft and turn to spring (7), this spring one end is inserted in the square groove of support (2), respectively have a spring catch (5) to be fixed on the edge that turns to pawl (6) at the inboard two ends of described back-moving spring (4), described lower contact (11) upper end is connecting the lower end of a steering head (9) steering head upper end by screw thread and body (1) with screw thread and is being bound up.
2, according to claim 1ly go into well casing post guider transfer, it is characterized in that a circular square groove is arranged in the steering head (9), be shelved with ball-type axle (10) in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242174 CN2611596Y (en) | 2003-03-19 | 2003-03-19 | Well pipe string guide diverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03242174 CN2611596Y (en) | 2003-03-19 | 2003-03-19 | Well pipe string guide diverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2611596Y true CN2611596Y (en) | 2004-04-14 |
Family
ID=34168624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03242174 Expired - Lifetime CN2611596Y (en) | 2003-03-19 | 2003-03-19 | Well pipe string guide diverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2611596Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103597164A (en) * | 2011-06-03 | 2014-02-19 | 哈里伯顿能源服务公司 | Wellbore junction completion with fluid loss control |
-
2003
- 2003-03-19 CN CN 03242174 patent/CN2611596Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103597164A (en) * | 2011-06-03 | 2014-02-19 | 哈里伯顿能源服务公司 | Wellbore junction completion with fluid loss control |
| CN103597164B (en) * | 2011-06-03 | 2016-09-28 | 哈里伯顿能源服务公司 | There is the pit shaft connection completion that fluid loss controls |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130319 Granted publication date: 20040414 |