Wellhead hydraulic force boosting method
A technology of hydraulic power source and force enhancement, applied in drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of wasting manpower, material resources and costs, insufficient lifting capacity, insufficient lifting capacity of minor repair equipment, etc., so as to improve the lifting capacity, The effect of reducing labor and material costs and avoiding accident complications
Inactive Publication Date: 2013-10-16
SHENGLI OILFIELD DONGSHENG JINGGONG GASOLINEEUM DEV GROUP
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Problems solved by technology
When downhole drilling tools get stuck, the lifting capacity is insufficient, especially when the drill pipe is used to salvage the jamming, the lifting capacity of the minor repair equipment is even more serious. At this time, only consider replacing the overhaul equipment. It also wastes manpower, material resources and costs
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[0029] attached figure 1 It is a large wellhead cross and a semi-full-sealing well sealing device commonly used in oil fields, and it is a wellhead facility that must be safe during downhole operations. The connection methods are all flange connection, which is also one of the most commonly used, most convenient, fastest and most effective high-voltage connection methods for petroleum industry equipment. The semi-full sealing well sealing device can provide a working pressure of 18 MPa for dynamic sealing and 35 MPa for static sealing during construction, and when the hydraulic cylinder provides a lifting force of 0-32 tons, it only needs hydraulic pressure of 0-12 MPa. The data is based on the hydraulic cylinder The diameters of , piston and connecting rod are adjustable, so the sealer can fully meet the sealing requirements when used with the hydraulic cylinder.
[0030] The liquid cylinder flange attachment of the present invention figure 2 It is connected with the ...
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The invention relates to petroleum industrial equipment, in particular to a wellhead hydraulic force boosting device and a force boosting method. In the technical scheme, a piston is arranged in a hydraulic cylinder; an upper piston connecting rod is connected to the upper end of the piston; a lower piston connecting rod is connected to the lower end of the piston; the lower end of the lower piston connecting rod is a drill pipe connection screw thread which can be connected to a drilling tool in a well; a hydraulic cylinder upper pressure cap and a sealing piece are arranged on the top of the hydraulic cylinder; an anti-release pressure cap is arranged on the upper end of the upper connecting rod; a hydraulic cylinder flange plate capable of being in flanged connection with a wellhead blowout preventer is arranged at the bottom of the hydraulic cylinder; and a top oil input and output hole and a bottom oil input and output hole for inputting and outputting hydraulic oil are arranged on the upper and the lower ends of the hydraulic cylinder. The device and the method disclosed by the invention have the benefits that: by upwardly lifting the drilling tool through a large hook and upwardly and hydraulically lifting the drilling tool through the hydraulic cylinder, two portions of action forces are simultaneously applied on the drilling tool in the well so that the tension force of the drilling tool in the well is boosted, thus, the lifting capacity of current repair equipment is greatly increased.
Description
Technical field: [0001] The invention relates to a petroleum industry equipment, in particular to a wellhead hydraulic boosting method. Background technique: [0002] At present, the ratio of minor repair teams to major repair teams in oilfields is generally about 10:1, or even higher, and a large part of minor repair workover equipment is a combination of 250 type workover rigs or drilling rigs and derricks, and its maximum lifting capacity is only 40T, the drilling rig plus the derrick can be slightly higher, but it will never reach the load capacity of the overhaul derrick. When downhole drilling tools get stuck, the lifting capacity is insufficient, especially when the drill pipe is used to salvage the jamming, the lifting capacity of the minor repair equipment is even more serious. At this time, the only option is to consider replacing the overhaul equipment. It also wastes manpower, material resources and costs. Invention content: [0003] The object of the pre...
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IPC IPC(8): E21B19/02
Inventor 张卫詹景峰吕凤平张大东郑凯耿辉朱林峰
Owner SHENGLI OILFIELD DONGSHENG JINGGONG GASOLINEEUM DEV GROUP