摘要
为解决海上调整井浅层防碰问题突出、国内技术受制于人、传统电缆拉光纤陀螺浪费钻井工期且易发生井下复杂情况等问题,从改变光纤陀螺测量模式出发,构建了一整套随钻陀螺系统,完成了传感器小型化设计。系统综合应用“编码器+陀螺仪”组合识别闭环控制技术,基于零速修正的卡尔曼滤波算法、自寻北技术及电源智能管理技术,连续作业时间达150 h。通过室内试验完善了仪器在抗震、耐温、耐压及作业方式等方面的性能。随钻陀螺在冀东油田唐71-46井的现场应用中,测量井斜误差小于0.1°,方位误差小于2.0°,井下随钻时间长达65 h,随钻深度达1390 m。该随钻陀螺仪随钻测斜精度堪比电缆陀螺精度,仪器信号传输平稳,应用效果良好。
It is urgent to solve such problems as severe shallow anti-collision in offshore adjustment wells,domestic technology restricted by others,traditional cable pulling fiber optic gyroscope wasting drilling time and prone to downhole complexities.In this paper,a set of gyro-while-drilling system was built by changing the measurement mode of fiber optic gyroscope and the miniaturization design of sensors was completed.Based on zero-speed corrected Kalman filter algorithm,north-seeking technology and intelligent power management technology,“encoder+gyroscope”combined identification closed-loop control technology is applied in the system and the continuous operation time reaches 150 hours.In laboratory tests,the performances of gyro-while-drilling system including seismic resistance,temperature resistance,pressure resistance and operation mode were improved.In the field application of gyro-while-drilling system in Well 71-46 of Jidong Oilfield,the measured deviation error is less than 0.1°,the azimuth error is less than 2.0°,the downhole while-drilling time is 65 h,and the while-drilling depth is 1390 m.With stable signal transmission,the gyro-while-drilling system achieves good application results with high accuracy of deviation measurement comparable to the cable gyroscope.
作者
喻贵民
Yu Guimin(Tianjin Branch of CNOOC(China)Limited)
出处
《石油机械》
北大核心
2022年第8期61-66,共6页
China Petroleum Machinery
基金
“十三五”国家科技重大专项“大型油气田及煤层气开发”之子课题“随钻陀螺工程化及应用”(2016ZX05058002-001)。
关键词
随钻陀螺
丛式井组
调整井
加密
防碰
gyro-while-drilling
cluster well group
adjustment well
infill
anti-collision
