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
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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。图4参10
The T_1j_2~2 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.
The T_1j_2~2 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.
引文
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[3]黄立功,钟建华,王海侨,等.柴西地区构造应力场演化模拟[J].石油勘探与开发,2004,31(6):75-77.(HUANG Li-gong,ZHONG Jian-hua,WANG Hai-qiao,et al.Evolution simulationof stresss field in West Qaidam Basin,NW China[J].PetroleumExploration and Development,2004,31(6):75-77.)
[4]黄花香,吴战培,熊艳,等.速度反演技术在四川盆地储集层预测中的应用[J].石油物探,2002,41(4):456-460.(HUANG Hua-xiang,WU Zhan-pei,XIONG Yan,et al.Application of velocityinversion techniques in prediction of reservoirs in Sichuan basin[J].Geophysical Prospecting for Petroleum,2002,41(4):456-460.)
[5]张永升,李家蓉,潘新志,等.地震和测井联合反演技术在塔河油田碳酸盐岩储集层预测中的应用[J].勘探地球物理进展,2002,25(4):46-48.(ZHANG Yong-sheng,LI Jia-rong,PAN Xin-zhi,et al.Application of seismic and logging joint inversion in theprediction of carbonate reservoirs in Tahe oilfield[J].Progress inExploration Geophysics,2002,25(4):46-48.)
[6]王永刚,李振春,刘礼农.利用地震信息预测储集层裂缝发育带[J].石油物探,2000,39(4):57-63.(WANG Yong-gang,LI Zhen-chun,LIU Li-nong.Using seismic data to predict fractured zoneof reservoir[J].Geophysical Prospecting for Petroleum,2000,24(4):57-63.)
[7]朱成宏.裂缝预测技术在松南工区预测效果分析[J].石油物探,2001,40(4):62-68.(ZHU Cheng-hong.Application effect analysis offracture predication technique in Songnan prospect area[J].Geophysical Prospecting for Petroleum,2001,40(4):62-68.)
[8]兰素清,陆明华.多种地球物理方法组台在储集层预测中的应用[J].勘探地球物理进展,2002,25(6):43-46.(LAN Su-qing,LUMing-hua.Application of combined geophysical technologies inreservoir prediction[J].Progress in Exploration Geophysics,2002,25(6):43-46.)
[9]黄绪宝,张旭光,刘其,等.VoxelGeo在塔河油田碳酸盐岩储集层预测中的应用[J].石油物探,2001,40(4):100-105.(HUANG Xu-bao,ZHANG Xu-guang,LIU Qi,et al.Application of VoxelGeo in theprediction of carbonate reservoirs in Tahe oilfield[J].GeophysicalProspecting for Petroleum,2001,40(4):100-105.)
[10]王世瑞,彭苏萍,勾精为,等.应用多波多分量技术预测轮南地区中生界储集体[J].石油勘探与开发,2003,30(2):61-63.(WANGShi-rui,PENG Su-ping,GOU Jing-wei,et al.Prediction ofmulti-wave and multi-component seismic exploration techniqueson the Mesozoic reservoirs in the Lunnan,Tarim basin,Northwest China[J].Petroleum Exploration and Development,2003,30(2):61-63.)
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