New Heave Compensation System Design of Swim Car Hook and Motion Analysis

Abstract

Abstract:

The drill string heave compensation system is an important part of offshore drilling equipment. During the operation, it can compensate heave motion of the platform, ensure a stable bottom hole pressure while drilling, keep drilling efficiency, protect the life of the drill bit and drill pipe, and improve drilling safety. At present, the drill string heave compensator device needs to be imported, and the price is very expensive, so the development of heave compensation system for offshore drilling platforms with our own intellectual property is imperative. On the basis of heave compensation device-related information and analyses on the structure, working principle and application of the existing drill string heave compensation system, considering the advantages and disadvantages of different heave compensation methods in practical operations, the new design scheme is proposed for heave compensation device. The rack-and-pinion scheme is selected for the new heave compensation device after comparison. Motion analysis on the rack-and-pinion device provides a reference for the structural design and simulation analysis of new heave compensation systems.

Key words: offshore drilling equipment, swim car, hook, heave compensation, equipment design, motion analysis

CLC Number:

P742
TE92

Qing-you LIU, Yang TANG, Chong-jun HUANG, Wei LI. New Heave Compensation System Design of Swim Car Hook and Motion Analysis[J]. Ocean Engineering Equipment and Technology, 2014, 1(1): 70-75.

Figures/Tables 9

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References 12

[1]	栾苏, 于兴军.深水平台钻机技术现状与思考[J].石油机械, 2008, 36(9): 135.
[2]	白鹿. 钻柱液压升沉补偿系统设计研究[D].青岛: 中国石油大学(华东), 2009.
[3]	Fery D. Heave compensation[EB/OL]. , 2002-04-08.
[4]	Korde U A.Active heave compensation on drill-ships in irregular waves[J]. Ocean Engineering, 1998, 25(7): 541.
[5]	Robichaux L R, Hatleskog J T. Semi-active heave compensation system for marine vessels: US, 0052093-02A[P].1993-05-11.
[6]	方华灿. 海洋钻井船升沉补偿装置的设计[J]. 石油矿场机械, 1976, 5(5): 25.
[7]	Duncan A B, Sprague R G, Chin H T. Drill string compensator: US, 3804183[P].1974-04-16.
[8]	Moe M M, Kyllingstad A. Inline compensator for a floating drill rig: US, 7231981B2[P].2007-06-19.
[9]	Egbert G L, Ziegler III P L. Drill string compensator with improved transloaders: US, 5066059[P].1991-11-19.
[10]	方华灿. 海洋钻井绳索作业时升沉补偿问题的研究[J]. 华东石油学院学报, 1980(3): 25.
[11]	陈远明, 叶家玮, 宋鑫. 波浪运动补偿稳定平台系统的设计与建模[J]. 机床与液压, 2007, 35(10): 115.
[12]	汤晓燕, 刘少军, 王刚. 深海采矿升沉补偿系统建模及其模糊控制仿真[J]. 中南大学学报: 自然科学版, 2008, 39(1): 128.

升沉补偿方式	原理	优点	缺点	应用情况
被动式	应用气体(空气)弹性来吸收能量和反馈被运动载荷消耗的能量	不需要连续输入能量	补偿性能不稳定, 滞后比较大	早期得到较好的应用
主动式	载荷作上下运动时, 由计算机控制的计量泵从驱动器液缸中活塞的一侧向另一侧泵送一定量的几乎不可压缩的流体, 可以将钻压的变化控制在10%以内	抗干扰能力强, 适应性好, 补偿精度高, 补偿性能稳定	需要用外部能量来支持每一次载荷循环所要求的功, 且结构复杂	因初始费用很高,要求的瞬时功率大,能源价格昂贵,系统复杂等, 应用受到限制
半主动式	是介于主动与被动之间的复合系统, 也需要连续输入能量, 但其所需的能量没有主动系统大	与主动式系统相比, 可减少所需的动力; 与被动式补偿器相比, 可改善力的变化和储气罐的体积	补偿精度介于主动与被动之间	应用较广泛

机构	工作特点
凸轮机构	实现高速化, 结构紧凑, 可靠性高, 但易磨损, 加工困难, 行程小
曲柄滑块机构	磨损小, 传递动力大, 成本低, 但受空间限制, 曲柄直径不能太大
带传动	结构简单, 传动平稳, 有缓冲载荷和安全保护作用, 但效率低, 寿命短, 不能反向
链传动	效率高, 适用性强, 传递功率大, 成本低, 但易磨损, 噪声大
丝杠螺母机构	传动稳定, 精度高, 但长的丝杠加工精度比较难以保证, 运动距离有限
齿轮齿条机构	结构简单, 加工方便, 传动精度和耐磨性高