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Scheme design and performance simulation of floating drilling compensation winch |
HUANG Lumeng1, ZHANG Yanting1, SHEN Rong1, WANG Lijun2, LI Yuejiang2, CHEN Jingkai1
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(1.National Engineering Laboratory of Offshore Geophysical and Exploration Equipment in China University of Petroleum(East China), Qingdao 266580, China;2.Lanzhou Lanshi Petroleum Equipment Engineering Company Limited, Qingdao Branch, Qingdao 266520, China)
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Abstract: |
In order to improve the comprehensive performance of offshore floating drilling operation, the scheme design and control strategy of the electrical compensation winch were studied. In view of the single winch system, a double winch heave compensation scheme was proposed. The motion and force of the traveling gear train were completely symmetrical, and the gear train has special advantages of high transmission efficiency and good safety. The key structural parameters of the system were designed, and based on the analysis of energy flow, the compensation ability of winch heave and its influencing factors were calculated and analyzed theoretically. A joint control scheme of winch based on displacement control mode was proposed. The cascade control structure of outer ring heave displacement, drilling pressure closed-loop and inner ring vector variable-frequency motor speed closed-loop was adopted. The appropriate outer ring closed-loop control algorithm was selected. The simulation study of control performance was carried out by using the system model based on Simulation X. The results show that the double winch compensation system has a stable operation and can realize the joint control of compensation and bit feed motion. The simulation law meets the requirements of offshore floating drilling. |
Key words: offshore drilling winch heave compensation bit feed compensation capability cascade control ?偅j |
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