Snubbing serving device of combined type hydraulic oil-water well

Abstract

The invention relates to a snubbing serving device of a combined type hydraulic oil-water well, which comprises a hydraulic triple ram preventer, a first annular preventer, a second annular preventer, a fixing top clamp resisting tile, a self-tightening hydraulic top clamp resisting tile, a rectangular vertical frame, two oil cylinders, a lifting cross connection, a hydraulic balanced valve, a hydraulic pressure release valve, a hydraulic equilibrium valve, a hydraulic pressure relief valve, a hydraulic source pipeline and a hydraulic source, wherein the hydraulic triple ram preventer is fixed on an oil well large cross joint, the second annular preventer is used for lifting the cross joint; the first annular preventer, the second annular preventer, the fixing top clamp resisting tile and the self-tightening hydraulic top clamp resisting tile are sequentially arranged on the hydraulic triple ram preventer, the rectangular vertical frame is erected at the periphery of the well, the two oil cylinders are symmetrically on an upright column of the rectangular vertical frame, the lifting cross connection is connected with pistons of the two oil cylinders, the self-tightening hydraulic clamp tile and the lower fixing top clamp resisting tile are arranged on the upper part of the lifting cross connection, the hydraulic balanced valve and the hydraulic pressure release valve are arranged on two through holes of both sides of the two joints of the lifting cross joint, and the hydraulic equilibrium valve and the hydraulic pressure relief valve are arranged on openings on two sides of the two connections of the lifting cross connection, the hydraulic source pipeline and the hydraulic source are matched with the snubbing serving device in an assistant mode.

Description

1. Technical field [0001] The invention relates to an oil-water well snubbing operation device, in particular to a combined hydraulic oil-water well snubbing operation device. 2. Background technology [0002] At present, oilfields basically adopt well killing and workover in oil and water well operations, that is, injecting mud or killing fluid with a specific gravity greater than water in the casing to make the liquid column pressure higher than the formation pressure, so as to prevent accidents when the pipe string is tripped. Blowout phenomenon, the method of pressure operation has the following defects: 1. The design of well killing process is required to be absolutely accurate. If the specific gravity of well killing fluid is small and the depth of well killing is not enough, blowout will occur and cause serious accidents. If the specific gravity of well killing fluid is too large, If the concentration of the killing fluid is too high, the oil layer will be crushed to ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a combined hydraulic oil-water well snubbing operation device, which solves the problems of easy crushing of the oil well, contamination of the formation and blowout in the well killing operation of the above-mentioned prior art

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