层序约束下的火山岩储层地震反演技术及其应用
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摘要
火山岩油气藏是一种特殊的油气藏类型,由于其储层岩性、岩相横向变化快,非均质性强,地质、地震条件极为复杂,使得火山岩有效储层在平面展布、埋深、厚度和物性变化规律方面成为勘探的难点,而常规地震反演技术又难以取得较好的效果。因此,该文针对上述难点,以准噶尔盆地西北缘红车断裂带火山岩油藏为例,对其优质储层特征进行了精细分析,建立了该区的火山岩层序序列,并在此层序格架约束下利用多属性地震反演技术预测了目标区火山岩优质储层的展布规律。最终,在研究区预测有利储层面积达57.4km2,积极推动了该区火山岩的油气勘探,应用效果显著。
As a special type of reservoirs, volcanic reservoir is characterized by fast lithology and lateral lithofacies change, strong heterogeneity, complex geologic and seismic conditions, which makes the recognition of effective volcanic reservoir difficult in the aspects of plane distribution, burial depth, thickness and properties changes, and it is difficult to obtain accurate prediction effect by conventional seismic inversion techniques. In view of this difficulty, this paper analyzed the high quality volcanic reservoir in Hongche fault zone in the northwestern margin of Junggar Basin, established the volcanic sequence, and predicted the high quality volcanic reservoir distribution law by using multi-attribute constrained seismic inversion technique. The predicted area of favorable reservoir in the study area reaches 57.4 km2. It will promote the oil and gas exploration of volcanic reservoirs in this area.
As a special type of reservoirs, volcanic reservoir is characterized by fast lithology and lateral lithofacies change, strong heterogeneity, complex geologic and seismic conditions, which makes the recognition of effective volcanic reservoir difficult in the aspects of plane distribution, burial depth, thickness and properties changes, and it is difficult to obtain accurate prediction effect by conventional seismic inversion techniques. In view of this difficulty, this paper analyzed the high quality volcanic reservoir in Hongche fault zone in the northwestern margin of Junggar Basin, established the volcanic sequence, and predicted the high quality volcanic reservoir distribution law by using multi-attribute constrained seismic inversion technique. The predicted area of favorable reservoir in the study area reaches 57.4 km2. It will promote the oil and gas exploration of volcanic reservoirs in this area.
引文
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[2]朱如凯,毛治国,郭红莉,等.火山岩油气储层地质学——思考与建议[J].岩性油气藏,2010,22(2):7-13.
[3]刘俊田,姜书林,李在光,等.地震反演技术在三塘湖盆地油气勘探中的应用与效果分析[J].勘探地球物理进展,2009,32(3):211-215.
[4]潘建国,郝芳,谭开俊,等.准噶尔盆地红车地区火山岩储层特征及主控因素[J].石油地质与工程,2007,21(5):1-3.
[5]尹路,潘建国,谭开俊,等.火山岩地震储层学在准噶尔盆地红车断裂带石炭系油气探勘中的应用[J].岩性油气藏,2010,22(4):1-6.
[6]郑亚斌,王延斌,韩德馨.地震反演技术在火山岩储集层预测中的应用——以枣35块为例[J].新疆石油地质,2006,27(6):746-748.
[7]高喜龙,孙希瑞,李顺玲,等.测井约束反演在埕岛油田储层预测中的应用[J].石油地球物理勘探,2001,36(3):334-338.
[8]于宝利,刘新利,范素芳,等.火山岩相地震研究方法及应用[J].新疆石油地质,2009,30(2):264-266.
[9]王西文,石兰亭,雍学善,等.地震波阻抗反演方法研究[J].岩性油气藏,2007,19(3):80-88.
[10]冉启全,胡永乐,任宝生.火成岩岩性识别方法及其应用研究——以大港枣园油田枣35块火成岩油气藏为例[J].中国海上油气,2005,17(1):25-30.
[11]冉启全,李士伦,顾小芸.神经网络模式识别沉积微相[J].沉积学报,1996,14(增刊):186-191.
[12]张世晖,刘天佑,顾汉明.用神经网络识别火成岩[J].石油地球物理勘探,2003,38(增刊):84-87.
[13]严慧中,刘学敏,蔡文涛,等.火成岩储层地震综合技术的应用[J].石油地球物理勘探,1999,34(增刊):89-95.
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