基于频谱成像技术的元坝长兴组生物礁储层连通性研究  

Research on reservoir connectivity based on spectral imaging technology for the Changxing reef in the Yuanba area

作　　者：刘国萍[1] 游瑜春[1] 冯琼[1] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《石油物探》2017年第5期746-754,共9页Geophysical Prospecting For Petroleum

基　　金：国家科技重大专项(2016ZX05017005-001)资助~~

摘　　要：元坝长兴组生物礁相储层平面相变快、纵向上多期次叠加,各礁带内小礁体连通性复杂。在实际开发生产中,生物礁体或礁群之间的连通性研究为井位调整优化、井轨迹设计和减少遇水的风险提供了重要依据。目前研究储层静态连通性主要是利用地质综合研究方法或井间地震技术。将频谱成像技术应用于储层静态连通性的研究中,初步形成了一套基于频谱成像技术判定生物礁体或礁群连通性的方法。首先分析井位处生物礁储层与非储层的频谱差异性,然后用这种差异性来指导区域横向上的频谱差异性,进而判定礁体或礁群之间的连通性。利用该方法研究了元坝长兴组各生物礁带的连通性,所取得的认识已初步应用于元坝长兴组气藏开发中,新部署的开发井成功避水,并获得了高产。The ChangXing reef reservoir in the Yuanba area has characteristics such as fast plane phase transition,multiple superimposition in the longitudinal direction, and complex connectivity within different reef zones. To reduce the risk of water encoun- tered during drilling,and to optimize well location and assign borehole trajectory design,it is necessary to study the reef reservoir connectivity in the development and production process.At present, the methods for studying the static connectivity of a reservoir include the geological synthetic method and the cross-well seismic technique.We can use the spectral imaging technology and ana lyze the difference between the reef reservoir and the nowreservoir in well data to determine the connectivity of the reef reservoir. This method has been applied to the development of the ChangXing reef reservoir in the Yuanba area, and the new deployment well has successfully avoided water and has achieved a high yield.

关 键 词：生物礁 频谱成像技术 储层样本点 储层连通性 井位部署优化 

分 类 号：P631[天文地球—地质矿产勘探]