摘要
页岩气藏一般含气面积广、资源总量大,但生产寿命短、产量不稳定,气藏具有致密性、脆性、非均质各向异性和隐蔽性等特点,开发难度大,常规钻井技术不能满足页岩气开发的要求。水平井地质导向的目标是优化井眼轨迹在储层中的位置,为此,需要分析井眼轨迹与储层关系。文章以威远地区页岩气藏为研究对象,重点开展地层倾角随钻估算,分析钻进方向与储层产状的关系,确定钻头在目的层中的位置,及时调整井眼轨迹,以确保钻头在优质页岩储层中钻进,为威远地区的海相页岩气水平井优质高效钻进提供理论指导。
In general,it is gas-bearing widely and reserves amount largely in the Shale gas reservoir,but the product lifetime shortly and production instability. The reservoir is compact,fragile,heterogeneous anisotropy and convert,development is difficult,conventional drilling technology can not meet the requirements of shale gas development. The goal of horizontal well geo-steering is optimizing the position of well trajectory in reservoir,so it is necessary to analyze the relationship between well trajectory and reservoir. The paper researched the Shale Gas reservoir in Weiyuan area,emphatically estimated the dip angle while drilling,analyzed the relationship between drilling direction and reservoir occurrence,determined the bit position in the objective layer,adjusted the well trajectory timely,extended in the quality shale reservoir,and provided theoretical direction to drill the horizontal well efficiently for marine Shale gas in Weiyuan area.
出处
《国外测井技术》
2017年第5期8-13,2,共6页
World Well Logging Technology
基金
国家重点基础研究发展计划973项目<中国南方海相页岩气高效开发的基础研究>专题<页岩气水平井钻完井关键基础研究>的国285子课题研究成果(2013CB228003)
