地质导向技术在复杂构造区页岩油水平井高效施工中的应用

Application of geosteering technology in high efficiency construction of shale oil horizontal wells in complex structural areas

中国复杂构造区页岩油藏水平井钻井普遍存在时效低、施工效果差等问题,严重制约着页岩油的高效勘探与开发。本文以胜利油田FY1井区为例,综合分析地震、测井、录井及分析化验资料,梳理了影响水平井钻井施工的主要因素,阐述了水平井钻井地质导向关键技术,并列举了应用实例。结果表明:水平井钻井地质导向技术通过钻前精细地质建模、着陆段分段轨迹控制、水平段动态调整,指导钻井轨迹的调整,提高了钻井时效与优质储层钻遇率。该成果对中国复杂构造区页岩油的勘探与开发具有重要的意义。

Horizontal well drilling in shale reservoirs in complex structural areas in China has many problems,such as low aging and poor construction effect,which seriously restricts the efficient exploration and development of shale oil.Taking the FY1 well area of Shengli Oilfield as an example,this paper comprehensively analyzes the seismic,well logging,well logging and analytical laboratory data,summarizes the main factors affecting horizontal well drilling construction,expounds the key technology of horizontal well drilling geological guidance,and lists the application examples.The results show that the drilling time and high quality reservoir drilling rate can be improved by guiding the adjustment of drilling trajectory through fine geological modeling before drilling,sectional trajectory control of landing section and dynamic adjustment of horizontal section.The results are of great significance to the exploration and development of shale oil in complex structural areas in China.