VisiTrak地质导向技术在水平井着陆中的应用效果分析与探讨

Analysis and Discussion on Application Effect of VisiTrak Geosteering Technology in Horizontal Well Landing

殷小琛 谭伟雄 夏鹏远 张志虎 秦磊 徐昱

YIN Xiaochen TAN Weixiong XIA Pengyuan ZHANG Zhihu QIN Lei XU Yu

中海油能源发展股份有限公司工程技术分公司，天津　300452 中海石油（中国）有限公司天津分公司，天津　300459

CNOOC EnerTech-Drilling & Production Co., Tianjin 300452, China Tianjin Branch, CNOOC (China) Ltd., Tianjin 300459, China

针对底水油藏与低阻油层难动用问题，渤海油田首次将VisiTrak远探测技术在水平井中应用，该技术有效提升了工具的探测范围，实现提前预知储层变深或变浅，从容做出判断，降低了着陆失败带来的风险。研究区A井中的应用结果表明，超深探边在泥岩中提前7 m探测到储层顶界面，在储层变浅的情况下，轨迹精准着陆于储层界面以下0.7 m，大幅增加了水平段实施空间且保证了避水高度。VisiTrak远探测技术探测深度大，对储层界面预测准确，在构造不确定区域实施效果明显。

In view of the difficulty of producing for bottom water reservoirs and low resistance oil layers, the VisiTrak long-distance detection technology has been applied in horizontal wells for the first time in Bohai Oilfeild. This technique effectively increases the detection range of the tool, which can predict the depth of the reservoir in advance, help to make judgments calmly, and reduce the risk of landing failure. The application results of Well A in the research shows that in the ultra deep boundary detection, the tool detects the top interface of the reservoir 7 meters ahead of time in the mudstone, landing precisely 0.7 m below the reservoir interface even when the reservoir is shallower, the implementation space for subsequent drilling has been greatly increased and the water avoidance height is ensured. VisiTrak long-distance detection technology has a large detection depth, accurate prediction of the reservoir interface, and effective implementation in areas with uncertain structures.

中海油能源发展股份有限公司重大科技专项（课题）“钻井地质风险评价及实时导向技术研究（HFZDZX-GJ2020-01-05）”

https://doi.org/10.3969/j.issn.1008-2336.2023.03.070