井间连通综合分析方法在复杂断块油藏的应用

Application of Comprehensive Method for Analyzing Interwell Communication in Complex Faulted Block Reservoirs with Distributary Channels

彭文丰 漆智 张乔良 雷霄 孙晓晖

PENG Wenfeng QI Zhi ZHANG Qiaoliang LEI Xiao SUN Xiaohui

中海石油(中国)有限公司湛江分公司, 广东湛江 524057

Zhanjiang Branch of CNOOC Ltd., Zhanjiang Guangdong 524057, China

涠洲A油田流沙港组三段为分流河道型复杂断块油藏,区块内河道砂体相互叠置,断层发育,连通性复杂。为确保油藏注采效果,结合油田开发静动态资料,例如精细地层对比、含油单砂体地震描述、干扰试井、压力变化及试井分析对储层进行井间连通综合分析。综合方法很好地解释了由沉积相控制的复杂断块油藏的连通性,并重新建立井间连通模式,通过数值模拟预测剩余油分布,提出调整措施,取得了良好的开发效果。

Member 3 of Liushagang Formation Reservoir in Weizhou A Oilfeild is a complex faulted block reservoir, with distributary channel sand bodies superimposed and faults well developed, resulting in complexity in connectivity. In order to insure good oil production result by water injection, comprehensive analysis on interwell communication of reservoirs has been conducted with static and dynamic data, such as fine reservoir correlation, seismic description of single sand body, interference well testing, reservoir pressure change and well testing data. The method has been used to explain perfectly the communication of complex faulted block reservoir, which is controlled by sedimentary facies, and the model of interwell communication has been built. Through numerical simulation, the distribution of remaining oil has been predicted, and the measures for exploitation adjustment have been adopted, resulting in good development results of oil field.

https://doi.org/10.3969/j.issn.1008-2336.2015.03.033