泌阳凹陷陆相页岩油地质综合评价技术及应用

介绍了对泌阳凹陷陆相页岩地质综合研究过程中,形成的岩石学分析、测井储层评价、录井储层评价、地震储层预测、资源评价、目标区优选评价、水平井优化设计及开发方案优化设计八项技术。明确了泌阳凹陷页岩储层的岩相类型、储集空间类型及发育特征、测录井响应特征、储层地震响应特征、裂缝分布特征及页岩油资源规模等。利用目标区优选评价技术结合测录井及地震储层预测评价结果,优选评价了泌阳凹陷页岩油勘探有利目标区,通过钻井证实了泌阳凹陷陆相页岩油的良好勘探潜力。利用开发方案优化设计技术初步设计了已取得勘探突破的5号页岩层的开发井网,为页岩油的后期开发提供了保障。

Comprehensive evaluation technology of continental shale oil geology in Biyang sag and its application

Through comprehensive geological research on continental shale formations in Biyang sag,8 key geological evaluation technology series have been formed,namely petrology analysis,well logging reservoir evaluation,mud logging reservoir evaluation,seismic reservoir prediction,resource evaluation,target area selection evaluation,optimization design of horizontal well and development plan optimization.After successful application of these 8 geological evaluation technologies on continental shale formations in exploration practice of Biyang sag,the following aspects have been made clear,namely the lithofacies type of Biyang shale reservoir,the reservoir space types and development characteristics,the logging response characteristics,the reservoir seismic response characteristics,the fracture distribution and the shale oil resources scale.On the basis of these,by use of the target zone optimization evaluation technology and in combination with logging,mud logging and seismic reservoir prediction evaluation results,the favorable target zone for shale oil exploration in Biyang sag has been optimized out.The deployment of two horizontal wells for shale oil has achieved the breakthrough in continental shale oil exploration,which confirms the good exploration potential of shale oil in Biyang sag.By use of the preliminary design of the development optimization design technology,the development pattern of No.5 shale reservoir has been achieved,which provides the guarantee for shale oil in the late development.