A remote control method for the upper and lower platforms of the pipe string under pressure

Abstract

The invention discloses a method for remotely controlling a string to go up to a platform and go down from the platform during operation under pressure. The method comprises the following steps that 1, the string rolls in a ground slideway; 2, an auxiliary arm of a hydraulic mechanical arm is controlled to elongate, so that the front end of the auxiliary arm stretches out of a fence of the operation platform; 3, a cable at the front end of the auxiliary arm is controlled to be lowered down, and a string gripping device is put down on the ground; 4, the string gripping device is switched on, the string gripping device is connected with a string coupling, and a gripper is closed; 5, the cable at the front end of the auxiliary arm is controlled to be lifted up, and the string slides to a vertical state along the ground slideway; 6, the cable is controlled to continue to be lifted up until the string is lifted to the position where the string is flush with the previous string running in awell; 7, an auxiliary arm of a mast is controlled to retract, so that the front end of the auxiliary arm retracts to the position above a well mouth; 8, after hydraulic tubing tongs are operated to complete screwing-on of the string, the gripper is controlled to be opened, and the lifting operation of the string is completed. By means of the method, the string can be remotely controlled to go up to the platform or go down from the platform, the operation efficiency is improved, and the operation risk is greatly reduced.

Description

technical field [0001] The invention relates to a method for remotely controlling the upper and lower platforms of a pipe string in a pressurized operation in the oil drilling industry. Background technique [0002] Snubbing operation refers to the downhole operation technology that uses special operating equipment to implement downhole operation techniques such as tripping strings, wellbore repairs, and production stimulation measures under pressure at the wellhead of oil, gas, and water wells. The annular space pressure of the oil casing is controlled by the blowout preventer group, and the internal pressure of the tubing is controlled by the plug, and then the upward force in the well is overcome by applying an external force to the pipe string, thereby completing the tripping of the pipe string under pressure. Compared with oil wells, snubbing operation is better than traditional downhole operation. There is no foreign fluid intrusion, oil and gas layers will not be dama...

AI Technical Summary

Problems solved by technology

This method of operation has two disadvantages: one is that the operator always works on the high platform, and once the pressure in the well leaks, he will face a great safety risk; the other is that manual operations are required in many places during the operation, and the requirements for personnel are extremely high , the work efficiency is low

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