The invention discloses a six-degree-of-freedom wave compensation offshore drilling platform and a wave compensation method thereof. The platform comprises a floating ship body, a wave compensation device and a lifting device. The wave compensation device adjusts the posture of the drilling machine and controls the drill bit to drill; the lifting device further increases the drilling depth of the drill bit; a drilling machine is mounted on the upper surface of the lifting device; a drilling rod connected to the drilling machine extends into the floating ship body for drilling; a limiting stopper connected to the lower surface of the lifting device controls the drill rod to be kept vertical in the drilling work. The inertial navigation system monitors the position, speed and azimuth angle data of the floating ship body; and the master control platform processes data measured by the inertial navigation system and then controls each part to move based on a calculation result. Six-degree-of-freedom sea wave interference movement such as lateral movement, longitudinal movement, heaving, pitching, side inclination and yawing of sea waves can be effectively compensated, the position of a drill rod is limited, and therefore stable drilling of a drill bit in the well bottom in the offshore oil drilling and production process is guaranteed.
本发明公开了一种六自由度波浪补偿的海上钻井平台及其波浪补偿方法,所述平台包括浮船体、波浪补偿装置、升降装置;波浪补偿装置调整钻机位姿及控制钻头钻进工作,升降装置进一步增大钻头钻探深度;升降装置上表面安装钻机,连接于钻机的钻杆伸入浮船体用于钻进工作;连接于升降装置下表面的限位器控制钻杆在钻进工作中保持竖直;惯性导航系统监测浮船体的位置、速度以及方位角数据;总控平台对惯性导航系统测得的数据进行处理后,基于计算结果控制各部分运动。本发明能够有效地补偿海浪的侧移、纵移、升沉以及俯仰、侧倾、偏航等六自由度海浪干扰运动,并限制钻杆的位置,从而保证海上石油钻采过程中钻头在井底的稳定钻进。
Six-degree-of-freedom wave compensation offshore drilling platform and wave compensation method thereof
一种六自由度波浪补偿的海上钻井平台及其波浪补偿方法
2024-04-30
Patent
Elektronische Ressource
Chinesisch
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