碳酸盐岩裂缝-孔隙型储集层综合预测方法研究——以川东大池干井构造带T_1j_2~2储集层预测为例  

Synthetic prediction of carbonate fracture-pore reservoir:An example from T_1j_2~2 reservoir in the Dachiganjing structural belt

作　　者：蔡正旗[1] 张荣义[2] 郑超[2] 朱仕军[1] 秦启荣[1] 周基爽[1] 

机构地区：[1]西南石油学院 [2]中国石油西南油气田公司重庆气矿

出　　处：《石油勘探与开发》2005年第5期65-68,共4页Petroleum Exploration and Development

基　　金：四川省重点学科建设项目(SZD0414)

摘　　要：川东大池干井构造带T1j22储集层为具有孔隙及裂缝双重介质的碳酸盐岩,采用地震的多方法组合预测效果较差。从研究预测裂缝及孔隙双重介质的方法入手,对筛选出的预测方法进行敏感性检验或改进,最终用曲率法、有限元构造应力场模拟法以及地震法(速度反演、属性分析和偏移剖面解释)等进行综合预测,并根据预测的可靠程度将储集层划分为2类。Ⅰ类储集层分布在3类方法预测结果的叠合区内,可靠程度最高;Ⅱ类储集层或分布在曲率法及有限元法预测结果的叠合区内,或分布在地震剖面异常与STRATA速度反演或地震剖面异常与地震属性预测结果的叠合区,可靠程度较高。实际检验证明,这种综合预测法相对可靠且实用,是目前预测裂缝-孔隙型碳酸盐岩储集层较好的方法。The T1j2^2 reservoir in Dachiganjing structural belt belongs to carbonate rock with fractured porous double media. The effect of popular methods of comprehensive prediction （i. e. combined seismic methods） is usually worse. Beginning with predicting fractured-porous double media reservoir, the preliminary choices of methods were made and the sensibility of the chosen methods was examined and improved, then a comprehensive prediction was conducted by using the curvature method, finite element simulation of tectonic stress and seismic method, including the inversion of seismic speed, seismic attribute analysis and interpretation of shifting profile. According to the prediction reliability, the reservoirs are divided into Type Ⅰ with the highest reliability distributed in the overlapping scope resulting from prediction of three methods, and Type Ⅱ with higher reliability distributed in the overlapping scope resulting from prediction of curvature and finite element methods, or distributed in the overlapping scope from the prediction of abnormal seismic profile. The prediction of the comprehensive prediction is much better than that of the single or simple combined method, and the method is better for predicting fractured-porous reservoir of carbonate rock.

关 键 词：四川盆地 下三叠统 碳酸盐岩 裂缝-孔隙型储集层 综合预测 

分 类 号：TE122.24[石油与天然气工程—油气勘探]