Long-distance control wellhead operation device for workover operation

Abstract

The invention relates to a long-distance control wellhead operation device for workover operation. The long-distance control wellhead operation device mainly solves the problems that the labor intensity of workers is high, the safety is poor and the operation efficiency is low as the wellhead operation can not be mechanized and automated during the traditional workover operation. The long-distance control wellhead operation device is characterized in that a centering manipulator is arranged at the upper end of an operation appliance; a pair of hydraulic pliers is arranged inside a framework of the operation appliance; a buffering and locating block is arranged at the front end of the operation appliance; a moving mechanism is arranged at the lower end of the operation appliance; the operation appliance is positioned on a base of the operation appliance; the base of the operation appliance can be adjusted in the vertical direction and is used for locating the operation appliance in thevertical direction; a power slip is arranged inside the base of the operation appliance; the slip is connected with a flange at a wellhead; the installation position of the base of the operation appliance is determined by the power slip; and a control cabinet is welded at the side of the framework of the base of the operation appliance and is used for controlling a hydraulic system of the whole device. The long-distance control wellhead operation device has the advantages of increasing the mechanization and automation degree of assembly and disassembly of tubular columns, reducing the labor intensity of workover workers, realizing the unmanned operation of the wellhead and achieving the actual application value.

Description

technical field [0001] The present invention relates to a mechanized operation device for oil workover wellhead operations, in particular to a wellhead operation device for loading and unloading pipe string threads during oil workover wellhead operations that can realize remote control of workover operations . Background technique [0002] In various constructions of oil and gas development and production, workover operation is an important link. However, in this field, there are currently the following technical problems that need to be solved urgently: the key part of the workover operation is the operation process of the wellhead device. In the operation process of the wellhead device, the existing devices are hydraulic tongs, slips and elevator. The on-off and break-out operation in oil workover is mainly completed by manual operation of open-type hydraulic tongs and reversing elevators, while the hydraulic tongs in workover operations weigh two to three hundred kilogr...

AI Technical Summary

Problems solved by technology

The on-off and break-out operation in oil workover is mainly completed by manual operation of open-type hydraulic tongs and reversing elevators, while the hydraulic tongs in workover operations weigh two to three hundred kilograms and are hung on the derrick. When working, it is required to manually push or move out of the wellhead. Elevators are frequently switched, and the labor intensity is extremely high

In addition, the lifting operation process is simple, monotonous and frequent, and accidents such as tubing collapse and falling objects are prone to occur, which directly endanger the safety of wellhead operators

In addition, when these existing devices are used for workover operations in the field, the environment is harsh, and the well site is easy to freeze in winter, and many problems such as slippage and inflexible operation often occur

Although the break-in and break-out operation of the pipe string has developed from a simple manual break-in and break-out device to a power tong, and the automation level of the wellhead operation has been improved, the unmanned operation of the wellhead has not yet been realized, and the labor intensity is high, the safety is poor, and the workover is difficult. Problems such as low efficiency have become the main obstacles restricting the improvement of workover efficiency

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