摘要
古云集沙——中油藏油层薄,分布面积大,储量丰度低,采用直井开发,薄层采收率低。为了改善薄油层的开发效果,根据该区地质特征及开发现状,优选了水平井布井区块。并通过采用地震解释、地质建模等方法精细地质研究,搞清了水平井地区储层特征,优化了井位设计。在现场钻井过程中,采用LW D监控仪、综合录井仪、岩屑录井等多种技术手段相结合,严格控制井眼轨迹,追踪油层,实现了在不到2m的薄油层中穿行,达到了较高的砂岩钻遇率。水平井钻井的成功,为类似薄油层的开发提供了新的途径。
The oil recovery of guyunji oilfield is low because of thin oil sheet ,the big dastributing area ,the low reserves abundance, vertical well can＇t suit because of low oil recovery. To improve the develop- ment result , we use horizontal well to develop the block basing on the geologic entity and development status. The reservoir characteristics of the block have been described through multidisciplinary research methods such as seismic interpretation geologic modeling numerical analog etc. During well drilling LWD monitoring device, comprehensive logging device , cutting logging and many other technical measurements had been used for real--time monitoring. The horizontal wells drilled in ultra thin single sand layer with the thickness of less than 2m ,and the penetration rate for sandstone was higher. The success of drilling horizontal wells can be a new way for the development in oilsheet.
出处
《内蒙古石油化工》
CAS
2008年第11期138-139,共2页
Inner Mongolia Petrochemical Industry
关键词
水平井
地质模型
薄油层
古云集油田
Horizontalwell
Geologicalmodel ~ Oilsheet
Guyunji Oilfield
