摘要
煤层气连通水平井一般采用旋转磁场测距导向系统(RMRS)实现洞穴井与水平井的连通,通过测量水平井与洞穴井之间的距离与方位达到相交连通的目的。但在连通作业过程中,水平位移过长、测量数据累计误差过大等问题会导致连通精度下降。为此,在现有煤层气连通技术基础上,采用优化连通工艺措施、旋转磁场测距导向系统引导MWD测量系统计算技术、对测量数据的误差评价分析和改进等技术形成一套精确控制连通轨迹的工艺技术。现场应用结果表明,连通成功率提高到100%,可全面用于煤层气连通井施工。
The rotating magnet ranging system （RMRS） is generally adopted in CBM connected horizontal wells to connect the cavity well with the horizontal well. And the intersection and connection between the horizontal well and the cave well is achieved by measuring the distance and azimuth between them. During the connecting operation, however, the connection accuracy drops for the horizontal displacement is too long and the accumulative error of measuring data is too large. To solve these problems, a set of technologies that can control the connect-ed trajectory accurately were developed the basis of existing CBM connection technology by adopting the connection technology optimizing measures, the calculation technology of RMRS guided MWD measurement system, and the error evaluation, analysis and improvement tech-nology of measuring data. The results of feld application show that the success rate of the connection is increased to 100%, and it can be used in the construction of CBM connected wells.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2017年第6期692-696,共5页
Oil Drilling & Production Technology
关键词
清洁能源
煤层气
洞穴井
连通技术
轨迹控制
旋转磁场测距导向系统
clean energy
CBM
cavity well
connection technology
trajectory control
rotating magnet ranging system （RMRS）
