CN2437851Y - Hydraulic well repair drilling tool pressurizing device - Google Patents
Hydraulic well repair drilling tool pressurizing device Download PDFInfo
- Publication number
- CN2437851Y CN2437851Y CN 00239160 CN00239160U CN2437851Y CN 2437851 Y CN2437851 Y CN 2437851Y CN 00239160 CN00239160 CN 00239160 CN 00239160 U CN00239160 U CN 00239160U CN 2437851 Y CN2437851 Y CN 2437851Y
- Authority
- CN
- China
- Prior art keywords
- piston
- joint ring
- well repairing
- drilling tool
- drilling
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- 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 hydraulic pressurizing device for a well repairing drilling tool which uses liquid pressure to exert drilling pressure to a drilling tool in the oil well repairing work of an oil field. The utility model is composed of a piston 6, a table shoulder 8, a hole 9, compression springs 10, etc., wherein, the middle part of the piston 6 is provided with the table shoulder 8, the hole is arranged on a cylinder sleeve 7, and the interior of the cylinder jacket 7 and the upper end of a pressing cap 12 are provided with the compression springs 10. Due to the fact that a well repairing pipe column can not bear torsion, the well repairing pipe column only bears a slight compressive load, and thus, the well repairing pipe column which is mainly composed of an oil pipe can be used for substituting for a well repairing pipe column which is composed of a drilling rod. The oil well repairing work of casing pipe shaping, grinding, milling, drilling, etc. is carried out by a small repairing team, and thus, the expense of the oil well repairing is greatly lowered.
Description
The utility model relates to the well workover drilling tool fluid power water booster system that utilizes fluid pressure drilling tool to be applied the pressure of the drill in a kind of oilfield heavy repair task.
At present, in workover rig service to oil well, when boring operation for handling casing deformation and need carrying out milling, usually need to be equipped with the overhaul team that comprises a complete set of equipment such as large-scale workover, rotating disk, slush pump, owing to need to bear moment of torsion and drilling tool is applied the pressure of the drill by drilling rod, and the weighing more than 50% of drilling rod from the identical oil pipe of anharmonic ratio caliber, so the lifting load-bearing capacity of the workover rig that is equipped with must reach 80 tons, thereby its workover cost very high (general every well is 50～800,000 yuan), for not having too big assurance reparation and the lower oil well of production capacity, be difficult to make a decision and emit this risk investment.
The purpose of this utility model is to provide a kind of making to be equipped with hoisting power and to have only the clean-out crew of 30 tons of workover rigs to finish to have only overhaul team just can finish casing swage in the past and apply construction operation tasks such as certain the pressure of the drill grinds, mills, brill, reduces the well workover drilling tool fluid power water booster system of workover expense greatly.
The utility model is achieved in that by top connection 1, joint ring 2, hole 3, joint ring 4, joint ring 5, piston 6, cylinder sleeve 7, shoulder 8, hole 9, compression spring 10, joint ring 11, pressure cap 12, lower contact 13, joint ring 14 is formed, between top connection 1 and the cylinder sleeve 7 joint ring 2 is arranged, in the top connection 1 porose 3, between top connection 1 and the piston 6 joint ring 4 is arranged, between piston 6 and the cylinder sleeve 7 joint ring 5 is arranged, there is shoulder 8 at piston 6 middle parts, on the cylinder sleeve 7 porose 9, between piston 6 and the pressure cap 12 joint ring 11 is arranged, in the cylinder sleeve 7, there is compression spring 10 upper end of pressure cap 12, top connection 1 is connected with piston 6 tops, lower contact 13 is connected with piston 6 bottoms, between piston 6 and the lower contact 13 joint ring 14 is arranged.
Advantage of the present utility model is: utilize hydraulic coupling to produce the pressure of the drill that is applied on the drilling tool, the high pulling torque helicoid hydraulic motor that adopts fluid power to drive simultaneously rotatablely moves, because the well workover tubing string does not bear moment of torsion, only bear small compressive load, thereby can be the well workover tubing string that the main well workover tubing string replacement of forming is made up of drilling rod just in order to oil pipe, by clean-out crew carry out casing swage and mill, mill, workover operation such as brill, thereby reduce the workover expense significantly.
Fig. 1 is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further described:
The utility model is by top connection 1, joint ring 2, hole 3, joint ring 4, joint ring 5, piston 6, cylinder sleeve 7, shoulder 8, hole 9, compression spring 10, joint ring 11, pressure cap 12, lower contact 13, joint ring 14 is formed, between top connection 1 and the cylinder sleeve 7 joint ring 2 is arranged, in the top connection 1 porose 3, between top connection 1 and the piston 6 joint ring 4 is arranged, between piston 6 and the cylinder sleeve 7 joint ring 5 is arranged, there is shoulder 8 at piston 6 middle parts, on the cylinder sleeve 7 porose 9, between piston 6 and the pressure cap 12 joint ring 11 is arranged, in the cylinder sleeve 7, there is compression spring 10 upper end of pressure cap 12, top connection 1 is connected with piston 6 tops, and lower contact 13 is connected with piston 6 bottoms, between piston 6 and the lower contact 13 joint ring 14 is arranged.
Because when carrying out casing swage and milling, drilling and repairing well operation, must have surface pump to provide flushing fluid to keep circulation, the circulation route of flushing fluid is the annular space-return ground through well head between surface pump-well head-well workover tubing string-this water booster system-drilling tool-well workover tubing string and the sleeve pipe.When returning annular space between this device and sleeve pipe after by this device and drilling tool, certainly lead to certain pressure and fall because of flushing fluid.Higher relatively pressure acts on the top of piston 6 by hole 3, and relatively low pressure acts on the bottom of piston 6 by hole 9,6 in piston produces downward thrust under this differential pressure action, act directly on the drilling tool after this makes every effort to overcome the clothes spring force, promptly utilizes hydraulic coupling to form the pressure of the drill.
The structure of piston 6 has certain differential pressure action area, and promptly the pressure from the power fluid of well head pumping to this position is born at the top of piston 6, the pressure when its underpart is then born power fluid return position so far after the drilling tool step-down.Piston 6 produces downward thrust under this upper and lower differential pressure action, act on the drilling tool by lower contact 13 after overcoming spring force, forms the required the pressure of the drill of drilling tool.
The precompression of compression spring 10 is greater than comprising that piston 10, lower contact 13 reach the gravity that connects drilling tool down; for protection compression spring 10 at work not the reason overload damage; take to establish a shoulder 8, realize by the structure of pressure cap 12 limited piston 6 Bottom Runbies at piston 6 middle parts.
The effect of compression spring 10 is to bear the weight that piston 6 reaches the drilling tool that is connected by lower contact 13, and before turn on pump does not carry out the flushing fluid circulation, makes the top that connects the piston 6 of drilling tools by lower contact 13 be adjacent to the end face of top connection 1 pressure transmission hole 3 bottoms.And when the pressure reduction of piston 6 upper and lower ends reached certain numerical value, spring 10 was compressed, and 6 in piston applies the pressure of the drill to drilling tool in certain stroke range.
The setting of joint ring 11 is in order to prevent entering of foul.
Claims (1)
1. well workover drilling tool fluid power water booster system, by top connection (1), joint ring (2), hole (3), joint ring (4), joint ring (5), piston (6), cylinder sleeve (7), shoulder (8), hole (9), compression spring (10), joint ring (11), pressure cap (12), lower contact (13), joint ring (14) is formed, it is characterized in that: between top connection (1) and the cylinder sleeve (7) joint ring (2) is arranged, porose (3) are gone up in top connection (1), between top connection (1) and the piston (6) joint ring (4) is arranged, between piston (6) and the cylinder sleeve (7) joint ring (5) is arranged, there is shoulder (8) at piston (6) middle part, porose on the cylinder sleeve 7 (9), between piston (6) and the pressure cap (12) joint ring (11) is arranged, in the cylinder sleeve (7), there is compression spring (10) upper end of pressure cap (12), top connection (1) is connected with piston (6) top, lower contact (13) is connected with piston (6) bottom, between piston (6) and the lower contact (13) joint ring (14) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239160 CN2437851Y (en) | 2000-06-16 | 2000-06-16 | Hydraulic well repair drilling tool pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00239160 CN2437851Y (en) | 2000-06-16 | 2000-06-16 | Hydraulic well repair drilling tool pressurizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2437851Y true CN2437851Y (en) | 2001-07-04 |
Family
ID=33600057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00239160 Expired - Fee Related CN2437851Y (en) | 2000-06-16 | 2000-06-16 | Hydraulic well repair drilling tool pressurizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2437851Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405321A (en) * | 2014-10-21 | 2015-03-11 | 中国石油天然气集团公司 | Drilling pressure pushing pressurizer |
| CN107724985A (en) * | 2017-11-13 | 2018-02-23 | 中国石油天然气股份有限公司 | Pressure-stabilizing grinding and milling shaper |
| CN111894496A (en) * | 2020-03-16 | 2020-11-06 | 重庆科技学院 | Drilling pressure control type underground circulation short circuit and coiled tubing drill plug dynamic flushing process |
-
2000
- 2000-06-16 CN CN 00239160 patent/CN2437851Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405321A (en) * | 2014-10-21 | 2015-03-11 | 中国石油天然气集团公司 | Drilling pressure pushing pressurizer |
| CN104405321B (en) * | 2014-10-21 | 2017-09-01 | 中国石油天然气集团公司 | The pressure of the drill is pushed away plus device |
| CN107724985A (en) * | 2017-11-13 | 2018-02-23 | 中国石油天然气股份有限公司 | Pressure-stabilizing grinding and milling shaper |
| CN111894496A (en) * | 2020-03-16 | 2020-11-06 | 重庆科技学院 | Drilling pressure control type underground circulation short circuit and coiled tubing drill plug dynamic flushing process |
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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 |