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Automatic control system for winch and control method of automatic control system

An automatic control system and winch technology, applied in drilling equipment and methods, earthwork drilling, winch and other directions, can solve problems such as the maximum tension limit, shorten the motion compensation stroke, meet the drilling production operation conditions, Reduce the effect of human manipulation

Active Publication Date: 2011-05-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods are limited by the compensation stroke and the maximum tension force in deep sea applications.

Method used

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  • Automatic control system for winch and control method of automatic control system
  • Automatic control system for winch and control method of automatic control system
  • Automatic control system for winch and control method of automatic control system

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 As shown, the present invention comprises the drilling moon pool arranged on the hull 1, the drilling moon pool is circumferentially provided with several winches 2 and pulleys 3, and one end of the cable 4 on each winch 2 suspends a drilling deck 5 jointly, and the drilling deck 5 is suspended in the drilling moon pool, and the other end of each steel cable 4 respectively bypasses a pulley 3 and connects to a counterweight 6 suspended on the outer side. The bottom of the drilling deck 5 is provided with a production riser 8 leading to the seabed 7 and a drilling compartment. water pipe9.

[0014] Such as figure 2 , image 3 As shown, the present invention also includes a data acquisition module 10 , a winch control module 11 and a winch execution module 12 .

[0015] The data acquisition module 10 includes a displacement ...

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PUM

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Abstract

The invention relates to an automatic control system for a winch and a control method of the automatic control system. The automatic control system for the winch is characterized by comprising a drilling moon pool arranged on a ship body, a plurality of winches and pulleys are arranged circumferentially on the drilling moon pool, and one end of each of steel cables on the winches is suspended on a drilling deck in the drilling moon pool and the other end of each of the steel cables bypasses the corresponding pulley to be connected with a counterweight suspended outboard, and a production stand pipe and a drilling marine riser which are inserted into the bottom of the sea are arranged at the bottom of the drilling deck; and the ship body and the counterweight are both provided with data acquisition modules, output ends of the data acquisition modules are connected with a winch control module arranged in a ship body control cabin, an output end of the winch control module is connected with a winch execution module, and an output end of the winch execution module is connected with a motor of the winch. The automatic control system for the winch has a simple and smart structural design, can shorten motion compensation stroke, is high in automation degree and accurate in calculation, and can be widely used for a drilling process.

Description

technical field [0001] The invention relates to a drawworks control system and control method, in particular to a drawworks automatic control system and control method for heave compensation of the drilling deck in a floating drilling oil storage handling system (FDPSO). Background technique [0002] Floating Drilling, Storage and Offloading System (FDPSO) is a new conceptual design in the field of offshore engineering. It is a new equipment based on the Floating Production, Storage and Storage System (FPSO) with the addition of drilling functional modules. Compared with other existing deep-sea drilling equipment such as semi-submersible drilling platform (Semi-submersible), tension leg drilling platform (TLP), and spar platform (Spar), FDPSO has a floating hull structure, which is subject to the ocean during service. Due to the effect of the environment, large hydrodynamic forces will be generated, and the ship will produce large-scale movements, especially the heave moveme...

Claims

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Application Information

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IPC IPC(8): E21B7/132E21B19/09B66D1/50
Inventor 谢彬岳前进雷松喻西崇刘健谢文会张威王世圣杜庆贵
Owner CHINA NAT OFFSHORE OIL CORP
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