地震相干技术在现河油田沙二段储层预测中的应用
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摘要
应用地震相干技术预测现河油田W3区块沙二上亚段储层分布时取得了较好的效果。W3区块沙二上亚段第1砂层组至第4砂层组中见有以下类型的相干异常:条带状高相干异常、席状高相干异常、团块状高相干异常、线状低相干异常和席状低相干异常。W3区块沙二上亚段储层相干异常的地质属性,可以认为条带状高相干异常主要为砂岩的反映,席状和团块状高相干异常则代表砂岩与泥岩的互层,席状低相干异常代表泥质岩类分布区,线状低相干异常则清楚地表示出断层的位置。并由此开展了对W3区块沙二上亚段储层各层段砂体分布特征的预测。
Better result was obtained in the upper reservoir prediction of Es2 in Xiahe Oilfield, of which coherence abnormal conditions were found out, including banded high coherence abnormal, sheet high coherence abnormal, blocklike high coherence abnormal, line low coherence abnormal, sheet-like low coherence abnormal. As a result, the geological attributes of the 2nd member of Shahejie Formation in Block Wangjiagang 3 were that banded high coherence abnormal was a reflection of sandstone, sheet and block-like one was a representative of interbeddings of sandstone and mudstone; sheet-like low coherence abnormal was an argiloid zone; line shaped low coherence abnormal fairly indicated the location of faults. These are used to predict the distribution of the sandstone body in the 2nd member of Shahejie Formation in Block Wangjiagang 3.
Better result was obtained in the upper reservoir prediction of Es2 in Xiahe Oilfield, of which coherence abnormal conditions were found out, including banded high coherence abnormal, sheet high coherence abnormal, blocklike high coherence abnormal, line low coherence abnormal, sheet-like low coherence abnormal. As a result, the geological attributes of the 2nd member of Shahejie Formation in Block Wangjiagang 3 were that banded high coherence abnormal was a reflection of sandstone, sheet and block-like one was a representative of interbeddings of sandstone and mudstone; sheet-like low coherence abnormal was an argiloid zone; line shaped low coherence abnormal fairly indicated the location of faults. These are used to predict the distribution of the sandstone body in the 2nd member of Shahejie Formation in Block Wangjiagang 3.
引文
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[2]王大伟,刘震,陈小宏,等.地震相干技术的进展及其在油气勘探中的应用[J].地质科技情报,2005,24(2):71～76.
[3]侯伯刚,乌达巴拉,杨再岩.地震相干体技术简介及其应用[J].现代地质,1999,13(1):121～124.
[4]佘德平,曹辉,郭全仕.应用三维相干技术进行精细解释[J].石油物探,2000,39(2):83～88.
[5]Neves F A,Zahrani MS,Bremkamp S W.Detection of potential fractures and small faults using seismic attributes[J].TLE,2004,23(9):903～906.
[6]张进铎.地震解释技术现状及发展趋势[J].地球物理学进展,2006,21(2):578～587.
[7]洪余刚,陈景山,成世琦,等.瞬时振幅相干法在储层预测中的应用[J].西南石油学院学报,2005,27(2):25～27.
[8]凌云项目组.基本地震属性在沉积环境解释中的应用研究[J].石油地球物理勘探,2003,38(6):642～653.
[9]纪彤洲,杨迎军,李尚林.相干体技术在河道预测中的应用[J].石油物探,2003,42(3):399～401.
[10]冯连勇,黎莉,曲勇.胜利油田岩性油藏勘探中的地震技术[J].石油地球物理勘探,2006,41(2):211～215.
[11]王云专,王润秋.信号分析与处理[M].北京:石油工业出版社,2006.228.
[12]牟永光.地震勘探资料数字处理方法[M].北京:石油工业出版社,1981.278.
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