摘要
HZ25—3油田是中国海上某探区第一个用钻采平台开发的边际油田。油田构造幅度低，油层多且薄，储量规模小。针对两个油藏油层薄、非均质性强、连续性差的特点，首先精细设计了两口水平井的轨迹，其次应用近钻头的方位密度及成像使水平井成功着陆在距砂岩顶0．5m的储层中。并通过地层边界探测技术结合三维地质模型的实时更新技术进行随钻跟踪、实时调整井眼轨迹，在不到2．0m的薄油层中钻水平段420～500m，砂岩钻遇率达80％以上。初期日产油达400m^3以上，水平井开发取得了良好的效果，同时提高了边际油田的经济效益。
HZ25-3 Field is the first marginal oilfield on production independently developed by platform in eastern Peal River Mouth Basin. According to the characteristic of very thin oil column, serious heterogeneity and discontinuity of the two major reservoirs, the trajectorys of two horizontal wells were designed accurately. The log curves from LWD tool close to the bit are quite important to land the well succesfully, and the information of formation boundary guided the lateral placement and well trajectory adjustment. The geosteering drilling technique was successfully applied in two horizontal wells of HZ25-3 Field, which brought the good productivity.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第5期65-72,共8页
Journal of Southwest Petroleum University(Science & Technology Edition)
关键词
边际油田
地质导向
密度成像
地层边界探测
三维地质模型
marginal oilfield
geosteeling
density imaging
formation boundary detecting
3D geologic model
