模型正演技术在鄂托克前旗地区的应用
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摘要
鄂托克前旗地区具备多套含气层系,勘探前景广阔。但该区横跨四大构造单元,构造条件复杂,各目的层储层均存在纵横向变化大、规律性不明显的问题,地震反射波组特征复杂多变。在分析区内井资料和地震资料的基础上,建立了奥陶系上覆煤系地层、奥陶系顶部古风化壳和上古生界主要目的层的地质模型,并通过模拟正演技术分别模拟了各地质模型的理论地震剖面,揭示了不同岩性组合、不同沉积环境和不同流体充填条件下的地震反射基本特征。在此基础上,对研究区主要目的层进行了地震解释和目标筛选,提供的3口建议井均获得了4×10~4m~3/d以上的工业气流。
Several gas-bearing formations with good exploration potential exist in Otog Qianqi area.However,the structure condition is complex for there are four structure units in the area.The reser- voirs have problems of considerable lateral and vertical changes, non-obvious regularity,and complex characteristics of seismic re- flection wave group.Based on the analysis of well data as well as seismic data,the geological models of overlying coal formation in Ordovician,paleo-weathering curst on the top of Ordovician,and Neopaleozoic target formations.Then,the forward modeling tech- nique was used to simulate the theoretical seismic sections of all ge- ological models and to reveal the basic seismic reflection character- istics in the situation of different lithologic association,different sedimentary environment,and different fluid filling condition.On the basis of this,seismic interpretation and object filtering were carried out on the target formations,the three proposal wells all obtains more than 4×10~4 m~3/d commercial gas flow.
引文
1马丽娟,郑和荣,陈霞.隐蔽油气藏地震预测技术研究新进展[J].地球物理学进展,2007,22(1):294~300
    2李显贵,邵吉华,张涛.波阻抗模型正演技术在砂岩储层预测中的应用[J].石油物探,2004,43(6):584~586
    3张永刚.地震波场数值模拟方法[J].石油物探,2003,42(2):143~148
    4牟永光.三维复杂介质地震物理模拟[M].北京:石油工业出版社,2003.1~120
    5魏建新,牟永光,狄帮让.三维地震物理模型的研究[J].石油地球物理勘探,2002,37(6):556~561
    6何自新,郑聪斌,陈安宁,等.长庆气田奥陶系古沟槽展布及其对气藏的控制[J].石油学报,2001,22(4):35~38
    7付金华,郑聪斌.鄂尔多斯盆地奥陶纪华北海和祁连海演变及岩相古地理特征[J].古地理学报,2001,3(4):25~34
    8拜文华,吕锡敏,李小军,等.古岩溶盆地岩溶作用模式及古地貌精细刻画—以鄂尔多斯盆地东部奥陶系风化壳为例[J].现代地质,2002,16(3):292~298
    9周义军,杨遂正,王欣.鄂尔多斯盆地奥陶系顶面演化与岩溶储层[J].石油物探,2006,45(3):304~310
    10郭忠铭,张军,于忠平.鄂尔多斯地块油区构造演化特征[J].石油勘探与开发,1994,21(2):22~29
    11王少昌,郝石生.鄂尔多斯盆地下古生界天然气分布特征及远景[A].见:《天然气地质研究论文集》编委会编.天然气地质研究论文集[C].北京:石油工业出版社,1990.49~56

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