摘要
断裂是重要的油气储集空间和流体运移通道,尤其对于深层致密储层,微断裂有利于深层油气资源的有效开发,在叠后地震数据倾角导向滤波处理的基础上,提取最大似然属性体,应用最大似然属性预测西湖凹陷花港组深层微断裂。结果表明,微断裂在地震剖面上的显示效果得到明显提升,平面上有利于计算微断裂发育密度,并预测有储层分布;最大似然属性刻画效果优于相干属性,其中,Likelihood属性对于微断裂的刻画效果较好,内部结构更为清晰;在定性预测微断裂的基础上,计算微断裂密度,可实现微断裂的定量表征。
Fractures are important oil and gas storage spaces and fluid migration pathways,especially for deep tight reservoirs,micro-fractures are beneficial for the effective development of deep oil and gas resources.On the basis of dip guided filtering processing of post-stack seismic data,the maximum likelihood attribute volume is extracted,and the maximum likelihood attribute is applied to predict the deep micro-fractures of Huagang Formation in Xihu Sag.The results indicate that the display effect of micro-fractures on seismic profiles has been improved,which is beneficial for calculating the density of micro-fracture development and predicting its distribution on a planar basis.The maximum likelihood attribute has a better characterization effect than the coherent attribute,among which the likelihood attribute has a better characterization effect on micro-fractures and a clearer internal structure.Based on qualitative prediction,the quantitative characterization of micro-fractures can be realized by calculating the micro-fracture density.
作者
王腊梅
娄敏
李炳颖
涂齐催
王伟
张艳红
WANG Lamei;LOU Min;LI Bingying;TU Qicui;WANG Wei;ZHANG YanHong(Shanghai Branch Company,CNOOC(China)Co.,Ltd.,Shanghai 200335,China;Schlumberger Technology(Beijing)Co.,Ltd.,Beijing 100089,China)
出处
《石油地质与工程》
CAS
2024年第1期1-5,12,共6页
Petroleum Geology and Engineering
基金
国家科技重大专项“东海厚层非均质性大型气田有效开发关键技术”(2016ZX05027-004)。
关键词
致密砂岩
微断裂
最大似然属性
深层油气开发
tight sandstone
micro-fractures
maximum likelihood attribute
deep oil&gas development
