Automatic control device for reverse pipe string coupling of working device under pressure

Abstract

The invention relates to an automatic control device of a reverse tubular column coupling of a belt pressure operation device. The automatic control device comprises a coupling notification device, a signal reception control device, a control structure, a timing switch device and a connecting piece, wherein the coupling notification device is connected below a bottom layer blowout preventer of the belt pressure operation device required to be controlled; starting and stopping of a motor which stops an upper layer blowout preventer and then starts the bottom layer blowout preventer, and a motor which stops the bottom layer blowout preventer and then starts the upper layer blowout preventer are automatically controlled by the signal reception control device on a remote control device according to a notified signal of the coupling notification device; when the tubular column coupling passes through the coupling notification device, the motor which stops the upper layer blowout preventer and then starts the bottom layer blowout preventer pushes a push block to stop the upper layer blowout preventer and then start the bottom layer blowout preventer; and after the tubular column coupling passes through the bottom layer blowout preventer and does not reach the upper layer blowout preventer, the motor which stops the bottom layer blowout preventer and then starts the upper layer blowout preventer pushes a push block to stop the bottom layer blowout preventer and then start the upper layer blowout preventer.

Description

technical field [0001] The invention relates to an automatic control device for snubbing high-pressure oil, gas and water well operations, in particular to an automatic control device for reversing pipe string couplings of a snubbing operation device. Background technique [0002] At present, the snubbing device is widely used in oilfield snubbing high-pressure oil and gas wells. The snubbing device mainly consists of a remote control device installed with a hydraulic control system, hydraulic pipelines, fixed slip clamps, and mobile slips. Clamp, blowout preventer, flange, blowout device, beam, hydraulic cylinder, collar alarm, support frame, operating platform, and connectors. It is used to block the pipe string and use the blowout preventer to seal the casing and It is a device for lifting and lowering the pipe string in the annular space between the pipe strings, and the pipe string coupling passes through the working device under pressure. , the lower position is diffe...

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Problems solved by technology

[0002] At present, the snubbing device is widely used in oilfield snubbing high-pressure oil and gas wells. The snubbing device mainly consists of a remote control device installed with a hydraulic control system, hydraulic pipelines, fixed slip clamps, and mobile slips. Clamp, blowout preventer, flange, blowout device, beam, hydraulic cylinder, collar alarm, support frame, operating platform, and connectors. It is used to block the pipe string and use the blowout preventer to seal the casing and It is a device for lifting and lowering the pipe string in the annular space between the pipe strings, and the pipe string coupling passes through the working device under pressure. , the lower position is different, through the opening and closing of the upper layer and the lower layer BOP, pour out the pipe string coupling, that is, when the pipe string coupling is going to pass through the lower layer BOP, it will open the lower layer BOP and close the upper layer BOP After the pipe string coupling passes through the bottom BOP, the bottom BOP is closed, the upper BOP is turned on, and the cycle is repeated, so that the pipe string coupling is poured out. This operation process is mainly based on the estimation and judgment of the operator. , it generally reports the position of the pipe string coupling on the working device under pressure through the coupling alarm, and the operator turns on or off the blowout preventer based on the alarm signal, but the manual operation is complicated and the coupling alarm is often inaccurate. , the judgment of its operators is often inaccurate, and the operation is prone to deviations and mistakes, which not only fail to achieve the expected results, but also have serious consequences

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