CN202266205U - Wellhead hydraulic force increasing device - Google Patents
Wellhead hydraulic force increasing device Download PDFInfo
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- CN202266205U CN202266205U CN2011204091834U CN201120409183U CN202266205U CN 202266205 U CN202266205 U CN 202266205U CN 2011204091834 U CN2011204091834 U CN 2011204091834U CN 201120409183 U CN201120409183 U CN 201120409183U CN 202266205 U CN202266205 U CN 202266205U
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Abstract
The utility model relates to petroleum industrial equipment, in particular to a wellhead hydraulic force increasing device. The technical scheme is that a piston is arranged in a hydraulic cylinder, the upper end of the piston is connected with a piston upper connecting rod, the lower end of the piston is connected with a piston lower connecting rod, and the lower end of the piston lower connecting rod serves as a drill rod connecting screw thread capable of being connected with a drill tool in a well. The top portion of the hydraulic cylinder is provided with a hydraulic cylinder upper press cap and a seal element, the upper end of the upper connecting rod is provided with an anti-falling press cap, the bottom of the hydraulic cylinder is provided with a hydraulic cylinder flange capable of being connected with a wellhead blowout preventer flange, the upper end of the hydraulic cylinder and the lower end of the hydraulic cylinder are respectively provided with a top portion oil inlet-outlet hole and a bottom oil inlet-outlet hole which are used for hydraulic oil inlet and outlet. The wellhead hydraulic force increasing device has the advantage of enabling two parts of acting force to be exerted on the drill tool in the well simultaneously to improve a force increasing method for the pull force of the drill tool in the well by means of the combination of a large hook lifting drill tool and a hydraulic cylinder hydraulic upward lifting drill tool, thereby greatly improving lifting capacity of minor repair equipment.
Description
Technical field:
The utility model relates to a kind of petroleum industry equipment, particularly a kind of well head hydraulic booster device.
Background technology:
At present; The ratio of oil field clean-out crew and overhaul team is generally about 10:1; Even higher, and light maintenance workover treatment equipment to have be that 250 model workover rig or tractor hoist add derrick combination greatly, its maximum pulling capacity has only 40T; What tractor hoist added derrick can be higher slightly, but also will never reach the load-carrying ability of big workover frame.When meeting the down-hole equipment bit freezing, hoisting power is not enough, when particularly using drilling rod to salvage unfreezing; The hoisting power of current repair equipment more highlights wretched insufficiency, at this moment, has only and considers to change overhaul facilities; Overhaul troop be to wait on the one hand, manpower and materials and cost also wasted on the one hand.
Summary of the invention:
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art; A kind of well head hydraulic booster device is provided; Promptly combine through carrying drilling tool and the fluid cylinder hydraulic pressure lifting drilling tool that makes progress on the hook; Realize two parts active force to be applied to simultaneously in the well on the drilling tool and improve method for force increasing, improved the hoisting power of current repair equipment greatly drilling tool pulling force in the well.
Its technical scheme is mainly to be made up of connecting rod, piston, piston lower link, bottom turnover oilhole, fluid cylinder flange, drilling rod thread on connecting rod anticreep pressure cap, fluid cylinder upper pressing cap and seal, top turnover oilhole, fluid cylinder, hydraulic oil, the piston on the piston; Be provided with piston in the described fluid cylinder; The upper end of piston is connected with connecting rod on the piston; The lower end is connected with the piston lower link, and piston lower link lower end is the drilling rod thread, can connection well in drilling tool; Be provided with fluid cylinder upper pressing cap and seal at the top of described fluid cylinder; Last small end has the anticreep pressure cap; The bottom of described fluid cylinder is provided with the fluid cylinder flange that can be connected with the wellhead blowout preventor flange, is provided with the top turnover oilhole and the bottom turnover oilhole of turnover hydraulic oil at the upper and lower side of fluid cylinder.
Above-mentioned fluid cylinder flange is provided with a plurality of screws, is connected with the upper flange plate of blowout preventer through bolt.
The upper and lower side of above-mentioned fluid cylinder is provided with the top turnover oilhole and the bottom turnover oilhole of turnover hydraulic oil, and installation and control valve and snap joint as required is connected with the hydraulic power supply of workover rig with convenient; Can keep the hydraulic oil in the fluid cylinder behind the valve closing, with easy disassembly with transport.
A kind of well head hydraulic booster device that the utility model proposes needs following condition to cooperate and accomplishes:
(a), the job site is equipped with half (entirely) envelope blowout preventer (Fig. 1);
(b), the scene has hydraulic pump to do hydraulic power supply.
More than two conditions; The operation field in each oil field can both reach at present; Relevant requirements according to China Petrochemical Industry; The job execution scene is not detected half full envelope blowout preventer qualified and that pressure testing is qualified and is not allowed construction, and workover rig or tractor hoist all have hydraulic pump effect hydraulic power supply to drive instruments such as hydraulic tongs.
The utility model compared with prior art has following effect:
(a), only utilize half full envelope blowout preventer on hydraulic power supply and the well head four-way on the workover rig,, form hydraulic lifting fluid cylinder sealing and fuel feeding; Cooperate on the hook then and carry; Two parts active force is applied on the interior drilling tool of well simultaneously, has improved hoisting power greatly, thereby need not change overhaul facilities; Put forward the unfreezing problem on just effectively solving energetically, reduced man power and material's cost.
(b), the upper lifting force of drilling tool surpasses when drilling tool breaks off suddenly in yield force or the well of bit freezing in acting on well; Owing to receive the hydraulic damping restriction in the fluid cylinder; Hook can not gone up suddenly the bullet string, causes the job-hopping of big rope or other accidents, derrick also not can because of the load bust acutely, springing sudden sprain significantly; So it is more safe and reliable that the conventional simple workover rig of the present invention is proposed the activity unfreezing on energetically, is fit to promote.
Description of drawings:
Accompanying drawing 1 is existing well head big four in oil field and half full envelope blowout preventer;
Accompanying drawing 2 is exactly the structural representation of the utility model;
Accompanying drawing 3 is exactly the utility model and the sketch map of half full envelope blowout preventer to connecting;
Among the last figure: connecting rod anticreep pressure cap 1, fluid cylinder upper pressing cap and seal 2, top pass in and out connecting rod 6 on oilhole 3, fluid cylinder 4, hydraulic oil 5, the piston, piston 7, piston lower link 8, bottom turnover oilhole 9, fluid cylinder flange 10, drilling rod thread 11 on the piston.
The specific embodiment:
Accompanying drawing 1 is oil field well head big four commonly used and half full envelope blowout preventer, is must safe well head facility in the underground work process.Its connected mode is flange plate type and connects, this also is that petroleum industry equipment is the most frequently used, most convenient, the most fast, the most effective one of high pressure connected mode.Half full envelope blowout preventer can provide the operating pressure of movable sealing 18MPa, static seal 35 MPa in construction; And fluid cylinder is when providing the lifting force of 0-32 ton; Only need the diameter of this data based fluid cylinder of hydraulic pressure, piston, connecting rod of 0-12 MPa adjustable; So this blowout preventer cooperates fluid cylinder to use, and can satisfy the sealing needs fully.
The fluid cylinder flange accompanying drawing 2 of the utility model is exactly that connected mode through flange links to each other with half full envelope blowout preventer in the wellhead assembly.The utility model mainly is made up of connecting rod 6, piston 7, piston lower link 8, bottom turnover oilhole 9, fluid cylinder flange 10, drilling rod thread 11 on connecting rod anticreep pressure cap 1, fluid cylinder upper pressing cap and seal 2, top turnover oilhole 3, fluid cylinder 4, hydraulic oil 5, the piston on the piston; Be provided with piston 7 in the described fluid cylinder 4; The upper end of piston 7 is connected with connecting rod 6 on the piston; The lower end is connected with piston lower link 8, and piston lower link 8 lower ends are drilling rod thread 11, can connection well in drilling tool; Be provided with fluid cylinder upper pressing cap and seal 2 at the top of described fluid cylinder 4; Last small end has the anticreep pressure cap; The bottom of described fluid cylinder 4 is provided with the fluid cylinder flange 10 that can be connected with the wellhead blowout preventor flange, is provided with the top turnover oilhole 3 and bottom turnover oilhole 9 of turnover hydraulic oil at the upper and lower side of fluid cylinder 4.
Accompanying drawing 3 is exactly the utility model and the sketch map of half full envelope blowout preventer to connecting, and piston lower link 8 wherein is connected through the box cupling of the interior drilling tool of drilling rod thread 11 and well; The fluid cylinder flange is connected with half full envelope blowout preventer flange then.
A kind of well head hydraulic booster device that the utility model proposes, need carry out following operating procedure and realize:
(a), utilize pipe nipple, the allotment down-hole equipment makes down-hole equipment when workover rig is mentioned maximum rated load, oil pipe or drilling rod joint hoop expose blowout preventer flange upper surface, can stamp elevator is the optimum position;
(b), utilize the screw thread of piston lower link, drilling tool in the connection well.Transfer this device, fluid cylinder 4 is connected to the blowout preventer upper flange plate, the top is passed in and out oilhole 3 pass in and out the hydraulic power supply that oilhole 9 is linked workover rig respectively with the bottom through fluid cylinder flange 10.Close half (entirely) envelope blowout preventer of well head, constitute airtight pressure space with fluid cylinder; Elevator is beaten the exposed parts of connecting rod on piston, lean on that connecting rod anticreep pressure cap bears pulling force on the piston.On carry hook, slowly be promoted to the maximum load rating of workover rig.
(c), utilize the hydraulic power source of workover rig, 9 pairs of fluid cylinder 4 fuel feeding of turnover oilhole form hydraulic lifting from the bottom, the reaction force of hydraulic lifting is applied on blowout preventer and the well head, forms the reinforcement that makes progress; At this moment, along with the increase of hydraulic power source pressure, the load on the hook begins to descend.
(d), carry hook on slowly, make workover rig still reach maximum load rating, at this moment, the pressure of hydraulic power supply begins to descend; Start hydraulic power supply, along with the increase of hydraulic power source pressure, the load on the hook begins to descend once more.
(e), carry hook on slowly, make workover rig still reach maximum load rating, at this moment, the pressure of hydraulic power supply begins to descend.
(f), repeat (d) and operation sequence (e); Making a concerted effort of the lifting force that pulling force that the hook that can make down-hole equipment obtain the workover rig drive makes progress and liquid cylinder piston make progress; Two parts active force can be applied on the drilling tool simultaneously; But the reaction force of this two parts power but act on respectively on the derrick with well head on, having reduced single lifting equipment provides energetically design strength and risk.
(g), pump into hydraulic power from top turnover oilhole 3 when needing unloaded loads, the load on this moment hook increases, and transfers hook, and load descends; Repeat to pump into hydraulic oil, hook load continues to increase, and transfers hook once more, reduces load, repetitive operation, and until the pressure of complete discharge hydraulic pump, it is normal that hook load recovers.
Wherein, charge oil pressure according to workover rig itself with hydraulic pump determine (generally between 0-14MPa); Driller and hydraulic pump operating personnel match, and fuel feeding limit, limit promotes or transfer on fuel feeding limit, limit.
Claims (2)
1. well head hydraulic booster device; It is characterized in that: mainly form by connecting rod (6), piston (7), piston lower link (8), bottom turnover oilhole (9), fluid cylinder flange (10), drilling rod thread (11) on connecting rod anticreep pressure cap (1), fluid cylinder upper pressing cap and seal (2), top turnover oilhole (3), fluid cylinder (4), hydraulic oil (5), the piston on the piston; Be provided with piston (7) in the described fluid cylinder (4); The upper end of piston (7) is connected with connecting rod on the piston (6); The lower end is connected with piston lower link (8), and piston lower link (8) lower end is drilling rod thread (11), can connection well in drilling tool; Be provided with fluid cylinder upper pressing cap and seal (2) at the top of described fluid cylinder (4); Last small end has the anticreep pressure cap; The bottom of described fluid cylinder (4) is provided with the fluid cylinder flange (10) that can be connected with the wellhead blowout preventor flange, is provided with the top turnover oilhole (3) and the bottom turnover oilhole (9) of turnover hydraulic oil at the upper and lower side of fluid cylinder (4).
2. well head hydraulic booster device according to claim 1 is characterized in that: described fluid cylinder flange (10) is provided with a plurality of screws, is connected with the upper flange plate of blowout preventer through bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204091834U CN202266205U (en) | 2011-10-25 | 2011-10-25 | Wellhead hydraulic force increasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204091834U CN202266205U (en) | 2011-10-25 | 2011-10-25 | Wellhead hydraulic force increasing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266205U true CN202266205U (en) | 2012-06-06 |
Family
ID=46157003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204091834U Expired - Fee Related CN202266205U (en) | 2011-10-25 | 2011-10-25 | Wellhead hydraulic force increasing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268968A (en) * | 2011-06-29 | 2011-12-07 | 胜利油田东胜精攻石油开发集团股份有限公司 | Wellhead hydraulic force boosting device and force boosting method |
-
2011
- 2011-10-25 CN CN2011204091834U patent/CN202266205U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268968A (en) * | 2011-06-29 | 2011-12-07 | 胜利油田东胜精攻石油开发集团股份有限公司 | Wellhead hydraulic force boosting device and force boosting method |
| CN102268968B (en) * | 2011-06-29 | 2013-10-16 | 胜利油田东胜精攻石油开发集团股份有限公司 | Wellhead hydraulic force boosting method |
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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: 20120606 Termination date: 20131025 |