Rotary equipment hydraulic driving device and driving method

Abstract

The invention discloses a rotary equipment hydraulic driving device and a driving method, and relates to the technical field of oil and gas exploitation. The device comprises a shell, a rotary body, apower mechanism and a hydraulic system. An annular cavity is arranged in the shell. The rotary body is at least partially arranged in the cavity, a clamping piece and a hydraulic oil cylinder for driving the clamping piece to move are mounted on the rotary body, and a gear ring is arranged on the side wall of the rotary body. The power mechanism can be engaged with the gear ring to drive the rotary body to rotate. The hydraulic system is used for carrying out oil supply and pressure maintaining on the hydraulic oil cylinder for driving the clamping piece to move, the hydraulic system at leastcomprises a pump used for driving hydraulic oil to flow, a first hydraulic oil cylinder used for driving the clamping piece, a guide rail arranged on the shell, a motor and a second hydraulic oil cylinder used for driving the motor to move, and the motor is arranged on the guide rail and can be driven by the second hydraulic oil cylinder to slide along the guide rail. According to the rotary equipment hydraulic driving device and the driving method, on the premise that the clamping piece mounted on the rotary body clamps a clamped piece under driving of the clamping hydraulic system, the rotary body can drive the clamped piece to rotate.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a hydraulic drive device and a drive method for rotary equipment. Background technique [0002] In the process of oil and gas development, especially in oil drilling operations, it is necessary to complete a large number of threaded connection make-up operations, which is time-consuming and labor-intensive. Therefore, the development of an efficient automatic equipment that can complete the make-up operation has become a concern. Engineering problems. [0003] In current oil drilling operations, the commonly used equipment for threaded connection make-up operations are hydraulic tongs and iron drillers. For hydraulic tongs, the degree of automation of hydraulic tongs is low, and at the same time, it uses a purely mechanical method to clamp drilling tools, and the size range of the pipe string clamped by a tong head of one specification is limited. For iron dril...

AI Technical Summary

Problems solved by technology

However, the iron driller's make-up operation needs to be completed step by step, using two sets of clamping devices to clamp the drilling tool multiple times, which results in low efficiency

Taking the buckle-up operation as an example, the iron driller needs to complete the spin buckle operation with a small torque and a fast speed, and a full circle of clamping and continuous rotation at one time, and then use a large torque, a slow speed, and multiple times to complete the buckle operation. Clamping multiple small-angle rotations to complete the fastening operation, this step-by-step operation has the following disadvantages: the two operations of small torque fast twist operation and high torque slow fastening operation require at least two clampings to complete, and the efficiency is greatly reduced ; Especially when the iron driller tightens with high torque, the pipe string cannot be rotated continuously after being clamped. It can only be clamped and rotated by a small angle at a time, then clamped and returned to the original position, and then clamped and rotated again. , is an intermittent rotary tightening process with low efficiency

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