水平井地质导向技术在盐间页岩油勘探中的应用

Application of Horizontal Well Geological Steering Technology in Inter-salt Shale Oil Exploration

水平井是提高页岩油开发效益的有效手段之一。以潜江凹陷蚌湖向斜南斜坡蚌页油1HF井为例,针对江汉油田潜江凹陷北部潜江组水平井钻探地质导向中存在的难点,综合运用地质、地震、测井等资料进行地质建模与实时导向跟踪,提高了盐间页岩储层的钻遇率。随钻综合地质导向技术要充分发挥地质测井、录井、地震、油藏等专业在导向建模和实时导向中的作用。为了进一步勘探和开发潜江组盐间页岩油,建议在地质综合研究的基础上,结合水平井随钻地质跟踪技术和压裂改造技术,实现潜江组盐间页岩油的规模开发。

Horizontal well is one of effective means to increase shale oil development benefit. Aiming at difficulties in horizontal well drilling geological steering of Qianjiang Formation in the Northern Qianjiang Sag in Jianghan Oilfield, the data including geology, seismic and logging are overall used to carry out geological modeling and real-time steering tracking, thus improving drilling-encounter ratio of inter-salt shale reservoir. Using while-drilling comprehensive steering technology needs to give full play to such specialties as geologic logging, well log, seismic and oil deposit in steering modeling and real-time steering. It is suggested to combine horizontal well while-drilling geological tracking technology and fracturing technology based on comprehensive geological research to realize scale development of inter-salt shale oil in Qianjiang Formation.