夏92-H井复杂地层地质导向钻井技术

Geosteering drilling technology for the complex formation of Well Xia 92-H

张忠志 丁红 刘涛

ZHANG Zhongzhi DING Hong LIU Tao

东北石油大学，黑龙江大庆　163318 西部钻探工程有限公司，新疆乌鲁木齐　830011 西部钻探定向井技术服务公司，新疆乌鲁木齐　830026 中国石油大学地球物理与信息工程学院，北京　102249

Northeast Petroleum University, Daqing 163318, China CNPC Western Drilling Engineering Company Limited, Urumqi 830011, China CNPC Western Drilling Directional Well Technology Service Company, Urumqi 830026, China Institute of Geophysics and Information Engineering, China University of Petroleum, Beijing 102249, China

夏92-H井是环玛湖凹陷斜坡带上的一口预探水平井，该井所在区域构造复杂，横向油藏埋深变化大，各井差异性大，采用常规技术无法及时准确找到储层和确保井眼轨迹在储层中穿行，不利于提高探井水平井的油层钻遇率和油藏产能评价。通过建立钻前地质模型、实时解释随钻测井资料、及时进行地质导向、井眼轨迹描述与优化等， 有效地确定了目的层顶界及着陆点深度，水平段油层钻遇率达到100%，取得了较好的地质导向和轨迹控制效果。

Well Xia 92-H is a wildcat well on the circum-Mahu sag slope belt. The region where the well is located has complex structure and large variation in lateral burial depth of the oil reservoirs, and the wells differ greatly from each other. Conventional technology cannot locate the reservoirs in a timely and accurate manner and cannot ensure that the hole trajectory will be kept in the reservoir, which is not favorable for improving the encountering rate of oil reservoir by horizontal wells and evaluation of reservoir productivity. By building a pre-drilling geologic model, real-time interpretation of MWD data and timely description and optimization of geosteering and wellbore trajectory, the top boundary of the target and landing depth could be effectively determined and 100% of reservoir encountering rate was achieved by horizontal holes, leading to excellent geosteering and trajectory control.

10.13639/j.odpt.2014.04.002