标题:
水平井综合地质导向技术及其应用研究Research on Integrated Geosteering in Horizontal Wells and Its Application
作者:
李油建, 张德安
关键字:
超深水平井, 综合地质导向, 测录一体化, 轨迹预测与控制Ultra-deep Horizontal Well, Integrated Geosteering, Integration of Logging and Recording, Trajectory Prediction and Control
期刊名称:
《Journal of Oil and Gas Technology》, Vol.39 No.4, 2017-08-15
摘要:
随钻综合地质导向技术对于现场水平井钻井具有重要的指导意义。从现场水平井随钻过程中存在的技术难点分析着手，以地质研究为基础，通过源头数据采集融合技术、近钻头岩性快速识别技术、水平井井身轨迹地质剖面预测技术、水平井井身轨迹控制技术、目的层微构造变化监测技术的研究和应用分析，提出一种有别于传统直井的水平井随钻测录一体化综合导向技术，并在川渝地区多口水平井随钻过程中得到成功应用。实钻结果表明，该项技术能为水平井段高效导向提供有效指导，平均目标层钻遇率达90%以上。
The integrated geosteering while drilling technology was great significance of drilling of horizontal wells. Starting from the analysis of technical difficulties in the horizontal drilling process and based on the research and the application and analysis of essential data acquisition and fusion technology, near-bit lithology rapid identification technology, prediction technology of geological profile along horizontal well trajectory, horizontal well trajectory control technology, and target layer microstructure monitoring technology, an integrated geosteering technology combining mud logging while drilling for the horizontal wells, which was different from logging in traditional straight wells, was proposed, and it was successfully applied in several horizontal wells in Sichuan-Chongqing Area. Its application results show that the technology can provide effective geosteering in horizontal wells, with an average target drilling encounter rate of over 90%.