CN201292778Y - Drilling pressure control apparatus for well repairing - Google Patents
Drilling pressure control apparatus for well repairing Download PDFInfo
- Publication number
- CN201292778Y CN201292778Y CNU2008201402261U CN200820140226U CN201292778Y CN 201292778 Y CN201292778 Y CN 201292778Y CN U2008201402261 U CNU2008201402261 U CN U2008201402261U CN 200820140226 U CN200820140226 U CN 200820140226U CN 201292778 Y CN201292778 Y CN 201292778Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- pressure
- drill
- tube
- bit
- 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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Abstract
The utility model relates to a bit-pressure control device for workover, which comprises a pipe post hanging mechanism and a bit-pressure stabilizing mechanism, wherein the bit-pressure stabilizing mechanism is arranged in the pipe post hanging mechanism which comprises an upper joint (1), an outer pipe (10), a fixing pipe (12) and an outer sleeve pipe (13), both ends of the outer pipe (10) are connected with the upper joint (1) and the fixing pipe (12), the lower part of the fixing pipe (12) is provided with a rotation-resisting key (14), and the outer sleeve pipe (13) is sleeved under an outer circular step of the fixing pipe (12); the bit-pressure stabilizing mechanism comprises a connecting pipe (8) and a telescopic pipe (9), the lower part of an outer circular step of the connecting pipe (8) is connected with the telescopic pipe (9), an upper outer circle of the pipe body of the telescopic pipe (9) is provided with a step, and a longitudinal key groove is arranged under the step and matched with the rotation-resisting key (14) of the hanging mechanism. The utility model has the advantages of easy manufacture, small volume and convenient operation and can supply stable bit pressure to a workover tool in a certain range.
Description
Technical field
The utility model relates to workover treatment equipment, particularly well workover the pressure of the drill control device of petroleum industry, is used for the control of well workover construction sand washing, cover milling the pressure of the drill.
Background technology
In the workover treatment of petroleum industry, sand washing, cover milling are the workover process of using always, the pressure of the drill is the construction parameter of a key, the safety of decision sand washing, cover milling speed and down-hole equipment, at present this pressure of the drill by well head well workover power-equipment operator hurriedly the handling drilling tool control.Not only accuracy is low, and the amount of labour is big, takes place sometimes to control the accident that improper generation down-hole equipment comes off because of the pressure of the drill.Lack the pressure of the drill control device in the well workover facility.
Summary of the invention
The purpose of this utility model provides well workover the pressure of the drill control device, solves the stable control problem of the pressure of the drill in the present workover treatment, improves the safety of down-hole equipment, reduces down-hole accident; Improve the stability of the pressure of the drill, guarantee production safety.
The invention provides a kind of well workover the pressure of the drill control device, comprise tubing string hitch and the pressure of the drill stabilizing mechanism, the pressure of the drill stabilizing mechanism is installed in the tubing string hitch, the tubing string hitch comprises top connection, outer tube, stationary pipes and outer tube, the outer tube two ends are connected with stationary pipes with top connection, respectively with fixing pin and fixing; Antirotation keys is equipped with in the bottom of stationary pipes, outer tube is sleeved on the cylindrical step below of stationary pipes, the pressure of the drill stabilizing mechanism comprises tube connector, telescoping tube, tube connector cylindrical step below is connected with telescoping tube, its step top is installed packing element and is regulated cap, the upper surface of tube connector cylindrical step and lower end root be provided with sealing ring and, packing element is the cylindrical body that circle has step in the bottom, regulate cap be installed on the tube connector and seat on the interior round platform rank of packing element, the body top cylindrical of telescoping tube is provided with step, and the step below is provided with vertical keyway and cooperates with the antirotation keys of hitch.
The utlity model has following advantage: the manufacturing of this instrument is simple, and volume is little, and is easy to operate.Can provide stable the pressure of the drill to workover tool within the specific limits, make construction safety, reduce labour intensity and improve speed of application, have remarkable economical and social benefit.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: this device comprises tubing string hitch and the pressure of the drill controlling organization, and the pressure of the drill stabilizing mechanism is installed in the tubing string hitch.The tubing string hitch comprises top connection 1, outer tube 10, stationary pipes 12 and outer tube 13, and outer tube 10 two ends are connected with stationary pipes 12 with top connection 1, fixes with fixing pin 4 and 11 respectively; Antirotation keys 14 is equipped with in the bottom of stationary pipes 12, and outer tube 13 is sleeved on the cylindrical step below of stationary pipes 12.The pressure of the drill stabilizing mechanism comprises tube connector 8, telescoping tube 9, and tube connector 8 cylindrical steps belows is connected with telescoping tube 9, and packing element 5 and adjusting cap 3 are installed in its step top, is provided with sealing ring 6 and 7 in the upper surface and the lower end root of tube connector 8 cylindrical steps.Packing element 5 is that circle has the cylindrical body of step in the bottom, regulates that cap 3 is installed on the tube connector 8, seat is on the interior round platform rank of packing element 5.The body top cylindrical of telescoping tube 9 is provided with step, and the step below is provided with vertical keyway and cooperates with the antirotation keys 14 of hitch.
The utility model is that critical piece forms a telescopic seal cavity with telescoping tube 9 and outer tube 10, can realize certain flexible compensation scope between top connection 1 and stationary pipes 12, plays the effect that connects its lower drill, transmit fluid pressure simultaneously.Telescoping tube 9 cylindricals have vertical keyway, cooperate the effect that can play transfer torque with antirotation keys 14, and the telescopic action of dependence device self provides compensated distance for the top that moves down and go up of its lower drill, with this stable the pressure of the drill.During practical application, after the workover tool of drill string bottom band runs into interior fish top of fish of pit shaft or cover damage section, along with the top tubing string continue move down, telescoping tube 9 moves on relatively in outer tube 10, form certain complementary range between telescoping tube 9 and the outer tube 10, workover tool just can be under the motionless situation of device top tubing string, and the pressure of the drill that provides by the weight of drill string between workover tool and this device carries out well-repairing work.
Claims (1)
1, a kind of well workover the pressure of the drill control device, comprise tubing string hitch and the pressure of the drill stabilizing mechanism, the pressure of the drill stabilizing mechanism is installed in the tubing string hitch, it is characterized in that, the tubing string hitch comprises top connection (1), outer tube (10), stationary pipes (12) and outer tube (13), outer tube (10) two ends are connected with stationary pipes (12) with top connection (1), use fixing pin (4) and (11) fixing respectively; Antirotation keys (14) is equipped with in the bottom of stationary pipes (12), outer tube (13) is sleeved on the cylindrical step below of stationary pipes (12), the pressure of the drill stabilizing mechanism comprises tube connector (8), telescoping tube (9), tube connector (8) cylindrical step below is connected with telescoping tube (9), its step top is installed packing element (5) and is regulated cap (3), upper surface and lower end root at tube connector (8) cylindrical step are provided with sealing ring (6) and (7), packing element (5) is the cylindrical body that circle has step in the bottom, regulate cap (3) and be installed in the last also seat of tube connector (8) on the interior round platform rank of packing element (5), the body top cylindrical of telescoping tube (9) is provided with step, and the step below is provided with vertical keyway and cooperates with the antirotation keys (14) of hitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201402261U CN201292778Y (en) | 2008-10-16 | 2008-10-16 | Drilling pressure control apparatus for well repairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201402261U CN201292778Y (en) | 2008-10-16 | 2008-10-16 | Drilling pressure control apparatus for well repairing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292778Y true CN201292778Y (en) | 2009-08-19 |
Family
ID=41006253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201402261U Expired - Fee Related CN201292778Y (en) | 2008-10-16 | 2008-10-16 | Drilling pressure control apparatus for well repairing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292778Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594837A (en) * | 2015-01-07 | 2015-05-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Horizontal well drilling pressure control tool |
| CN111472695A (en) * | 2020-04-03 | 2020-07-31 | 中国石油天然气股份有限公司 | Multi-stage bit pressure adjusting tool and bit pressure stabilizing method for directional drilling PDC bit |
-
2008
- 2008-10-16 CN CNU2008201402261U patent/CN201292778Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594837A (en) * | 2015-01-07 | 2015-05-06 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Horizontal well drilling pressure control tool |
| CN111472695A (en) * | 2020-04-03 | 2020-07-31 | 中国石油天然气股份有限公司 | Multi-stage bit pressure adjusting tool and bit pressure stabilizing method for directional drilling PDC bit |
| CN111472695B (en) * | 2020-04-03 | 2022-05-10 | 中国石油天然气股份有限公司 | Multi-stage bit pressure adjusting tool and bit pressure stabilizing method for directional drilling PDC bit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20101016 |