Automated workover rig for offshore platform and well repairing method

Abstract

The invention discloses an automated workover rig for an offshore platform and a well repairing method. The workover rig relates to a deck, a drill floor and a derrick and comprises a chassis pipe lifting module, a drill floor pipe feeding and discharging module, a two-layer table pipe coding module, a frame-type supporting column, a small supporting column, a hydraulic control system and a control center. During well repairing, pipe feeding and grabbing of a materiel table are achieved through the chassis pipe lifting module, and pipe lifting and vertical pipe conveying are achieved through apipe feeding mechanical arm; for the drill floor pipe feeding and discharging module, through a pipe feeding and discharging device, pipes are connected and pulled below a drill floor face, rotate by180 degrees, vertically move along a base of the drill floor and are conveyed to a well mouth; the two-layer table pipe coding module is matched with a two-layer table mechanism arm and a drill floormechanical arm through a pipe coding device for coding and fixing vertical pipes, and pipe taking is conversely conducted. According to the automated workover rig, a pipe feeding structure is adoptedfor replacing the labor, the production efficiency is improved, the labor intensity is reduced, and the hidden safety dangers are reduced.

Description

technical field [0001] The invention relates to an automatic workover rig, in particular to an offshore platform workover rig. Background technique [0002] Workover operation is an important part of oilfield production and a key process to ensure stable oilfield production. Offshore workover operations have the characteristics of small site, complex and changeable weather, and high efficiency requirements. At present, most offshore workover operations are manual-based operations, including: moving slips, feeding and returning power tongs, lifting oil pipes to the drilling floor, opening and closing elevators, and piping on the second floor platform Wait. People stand on the second-floor platform, and the sea is very windy and rough, so there is great danger and low efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an automatic workover machine for offshore platforms aiming at the defects in the prio...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an automatic workover machine for offshore platforms aiming at the defects in the prior art, aiming to solve the problems of loading pipe, making and breaking, tripping string, second floor Automatic operation problems such as vertical palletizing of platform pipe columns, improve on-site work efficiency, reduce labor intensity of workers, and reduce potential safety hazards

Images