Marine hydraulic drilling rig lifting and compensating device

Abstract

The invention discloses a marine hydraulic drilling rig lifting and compensating device. A plurality of lifting hydraulic cylinders are fixedly mounted on a derrick of a floating drilling platform marine drilling rig, and piston rods of the lifting hydraulic cylinders are up in transmission connection with a pulley support frame. The bottoms of the lifting hydraulic cylinders are connected with ahydraulic cylinder support frame, and a cylinder block of each lifting hydraulic cylinder is fixedly connected with the derrick through a hydraulic cylinder fixing assembly. The pulley support frame is provided with a pulley block, and a pair of guide rails is vertically arranged in the derrick. The pulley support frame slides vertically in the guide rails through rollers at two ends. One end of awire rope is connected with a dead rope fixing member, the other end of the wire rope is connected to a top drive connecting beam after bypassing the pulley block, the top drive connecting beam is connected with a top drive mounted on a top drive guide frame, and the top drive is downwardly connected with a lifting clamp. The device can greatly reduce the installed power of a lifting system underthe premise of satisfying the capability of the lifting system, and has excellent energy saving performance, high integration degree and good stability.

Description

technical field [0001] The invention belongs to the technical field of offshore oil drilling equipment, and relates to a lifting and compensation device for an offshore hydraulic drilling rig. Background technique [0002] As an important equipment for offshore oil exploration and development, the performance of the offshore drilling rig directly determines the operating capability, operating efficiency and the advancement of the entire system of the floating drilling platform. Functions such as launching underwater equipment, drilling, and improving system performance are important factors that affect the economics and safety of drilling operations on floating drilling platforms. [0003] The hydraulic drilling rig driven by hydraulic pressure has high energy density, less space occupation, light weight, high degree of integration and automation. The hoisting system composed of equipment has obvious advantages in derrick structure design, drilling rig weight and center of ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a lifting and compensation device for marine hydraulic drilling rigs, which solves the problems of the existing lifting system with complex structure, high driving power, many supporting equipment, heavy weight, and difficult manufacturing

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