涪陵地区小靶框精准地质导向技术研究

Research on Precise Geological Steering Technology of Small Target Frame in Fuling Area

为解决优质页岩气层钻井穿行率低的难题,以区域地质条件为导向基础,在邻井资料对比基础上结合了随钻、测、录井技术优点的小靶框精准地质导向技术应运而生。本技术包括靶点跟踪与调整技术、水平段轨迹控制及优化技术、标志层高效控层技术、小靶框控制技术4大部分,解决了地质层位设计中井震矛盾大、井间构造不明、穿行率控制困难、微小构造落实程度差等地质导向风险问题,可有效提高优质储层钻遇率,从地质上保障涪陵页岩气田后期高效开发效果。

In order to solve the problem of low drilling penetration rate in high quality shale gas layer,precise geological steering technology of small target frame based on regional geological conditions comes into being,which combines the advantages of drilling-test logging technology on the basis of the comparison of neighboring well data.This technology,including four technologies:target tracking and adjusting technology,horizontal section trajectory control and optimization technology,effective logo layer control technology and small target frame control technology,solves the geological steering risk problems such as the big well vibration contradictory,unknown interwell structure,the difficulty in controlling trajection rate and poor workable degree of small structure in the design of the geologic strata,which can effectively improve drilling encounter rate of the high quality reservoirs and guarantee later efficient development effect in Fuling Shale Gasfield.