川中潼南地区须二气藏多参数储层预测
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摘要
碎屑岩油气藏是四川盆地油气勘探的主要对象之一。随着勘探难度的增大,地震勘探从寻找构造油气藏进入寻找岩性的、地层—构造复合的隐蔽性油气藏。但实际钻探出现的失误昭示:碎屑岩储集体具有较强的非均质性,无论纵横向、厚度和物性变化都较大,而且大多具有典型的低孔低渗~特低孔特低渗特征,储层识别存在较大困难。从分析潼南合川地区须家河组储层特征入手,对储层段的地震响应模式,储集体的精细描述以及流体检测等进行综合研究,提出多参数储层预测的综合技术,经后钻的2口井检验,储层有效厚度预测与实际钻井资料对比符合情况较好。
Clasolite reservoir is one major target focused on by exploration activity in Sichuan Basin.Along with the increasing difficulties in exploration operations,seismic survey transfers from structural reservoirs to lithologic and elusive reservoirs with complex formation structures.However,the drilling data indicates that clasolite reservoir presents heavy heterogeneity with varieties in azimuth,thickness and physical property as well as characteristics such as low porosity and permeability or least porosity and permeability,which leads to difficulties in reservoir recognition.Beginning with the analysis of reservoir characteristics of Block Xujia River in Hechuan region,on the basis of integrated study on seismic response mode of reservoir interval,detailed description of reservoir rock and fluid medium test,the synthesized technology of multiparameter reservoir survey was proposed.Field conduct in two wells shows greater conformity between net pay thickness and what drilling data tells.
Clasolite reservoir is one major target focused on by exploration activity in Sichuan Basin.Along with the increasing difficulties in exploration operations,seismic survey transfers from structural reservoirs to lithologic and elusive reservoirs with complex formation structures.However,the drilling data indicates that clasolite reservoir presents heavy heterogeneity with varieties in azimuth,thickness and physical property as well as characteristics such as low porosity and permeability or least porosity and permeability,which leads to difficulties in reservoir recognition.Beginning with the analysis of reservoir characteristics of Block Xujia River in Hechuan region,on the basis of integrated study on seismic response mode of reservoir interval,detailed description of reservoir rock and fluid medium test,the synthesized technology of multiparameter reservoir survey was proposed.Field conduct in two wells shows greater conformity between net pay thickness and what drilling data tells.
引文
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[2]贺振华.反射地震资料偏移处理与反演方法[M].重庆:重庆大学出版社,1998.
[3]谢芳.四川盆地碳酸盐岩储层地震预测技术及其应用[C].物探工程技术交流会论文集.北京:石油工业出版社,2005.
[4]谢占安,邢文军,赵会欣.高密度三维地震采集技术在高尚堡油田的应用[J].石油钻采工艺,2009,31(S1):33-38.
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