Semi-active crown block heave compensation system for deep water drilling operation

Abstract

The invention relates to a semi-active crown block heave compensation system for deep water drilling operation, which comprises a floating crown block, a gear rack drive compensation device, a hydraulic support locking device, a guide device, a passive compensation wire rope rocking arm mechanism and corresponding control systems, wherein the gear rack drive compensation system improves the stability and reliability of heave compensation of the floating crown block; a hydraulic support locking system of the floating crown block improves the stability of the hydraulic support system and adds an emergency locking function; the guide device can control swing in heave compensation so that the floating crown block can smoothly run in the heave compensation process of the floating crown block; and the passive compensation wire rope rocking arm mechanism can realize a passive compensation function and can improve the energy utilization ratio and compensation efficiency of the heave compensation motion. The semi-active crown block heave compensation system has the beneficial effects of improving the crown block heave compensation system and increasing the stability, reliability and compensation efficiency of the crown block compensation system.

Description

technical field [0001] The invention relates to the technical field of deepwater drilling equipment, in particular to a semi-active crane heave compensation system for deepwater drilling operations. Background technique [0002] With the rapid development of the national economy in recent years, my country's demand for oil and gas resources has increased sharply, and the contradiction between supply and demand has become increasingly severe, which has become a bottleneck problem restricting the further healthy development of my country's future economy. For this reason, the state specially formulated the "my country's 21st Century Sustainable Development Oil and Gas Resources Strategic Plan". "Basic guarantee role" and ensure that the dependence on foreign oil and gas supply in the next 20 years will be lower than the safety line of 60%. At the same time, the "Outline of the Twelfth Five-Year Plan for National Economic and Social Development" also clearly stated that it is n...

AI Technical Summary

Problems solved by technology

The existing mechanism does not have the passive compensation function of energy storage and release, but the weight of the drill string suspended by the drilling wire rope is hundreds of tons. Have a large amount of energy available that cannot be used during exercise

[0010] The existing crown crane heave compensation system adopts hydraulic drive compensation, the hydraulic support system does not have a locking function, and swings will occur during the compensation process. In addition, the motion energy of the wire rope rocker mechanism cannot be utilized

Conventional crane heave compensation systems generally have problems such as low compensation efficiency of floating cranes, insufficient stability of floating cranes in the process of reciprocating up and down, and low reliability of various mechanisms.

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