礁滩体储层正演模拟研究
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摘要
上奥陶统良里塔格组礁滩体储层是塔里木盆地塔中地区主要储集层,为一套碳酸盐岩台地-陆棚边缘礁滩复合体沉积,埋藏深,非均质性强,储层类型多样,有效预测该类储层难度大。针对上述特点,设计了四个礁滩体储层模型,采用正演模拟方法,研究不同情况下礁滩体储层地震响应特征,并与已钻井实际资料对比,吻合较好,由此得出了关于礁滩体储层地震响应特征一些有意义的结论和认识,以便指导本区礁滩体储层预测,有效地减少储层预测结果的多解性。
Upper Ordovician reef shoal reservoirs are main reservoirs in Tazhong area of Tarim Basin and reefbank complex deposition and deeply buried and good lateral anisotropy and reservoirs of various types.It is diffcult to predict reef shoal reservoirs.According to characteristics,in the paper four reef shoal reservoirs models are designed and forward modeling is adopted,then studies geophysical characteristics of reef shoal reservoirs,whose result is the same as the real well data,therefore,some significant conclusions are made.The conclusions provide guidance for predicting reef shoal reservoirs and the multiplicity of reservoirs prediction is reduced.
Upper Ordovician reef shoal reservoirs are main reservoirs in Tazhong area of Tarim Basin and reefbank complex deposition and deeply buried and good lateral anisotropy and reservoirs of various types.It is diffcult to predict reef shoal reservoirs.According to characteristics,in the paper four reef shoal reservoirs models are designed and forward modeling is adopted,then studies geophysical characteristics of reef shoal reservoirs,whose result is the same as the real well data,therefore,some significant conclusions are made.The conclusions provide guidance for predicting reef shoal reservoirs and the multiplicity of reservoirs prediction is reduced.
引文
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[2]邬光辉,李启明,张宝收,等.塔中Ⅰ号断裂坡折带构造特征及勘探领域[J].石油学报,2005,26(1):27-30.
[3]周新源,王招明,杨海军,等.塔中奥陶系大型凝析气田的勘探和发现[J].海相油气地质,11(1):45-51.
[4]陈景山,王振宇,代宗仰,等.塔中地区中上奥陶统台地镶边体系分析[J].古地理学报,1999,1(2):8-17.
[5]李宇平,李新生,周翼,等.塔中地区中、上奥陶统沉积特征及沉积演化[J].新疆石油地质,2000,21(3):204-207.
[6]刘军迎,雍学善,高建虎,等.波动方程模型正演岩性油气藏波场研究[J].石油物探,2005,44(l):12一15.
[7]张永刚.地震波场数值模拟方法[J].石油物探,2003,42(2):143一148.
[8]杜正聪,贺振华,黄德济.逢洞储层地震波场数值模拟[J].地球物理学进展,2003,26(2):102-108.
[9]王红落,常旭,陈传仁.基于波动方程有限差分算法的接收函数正演与偏移[J].地球物理学报,2005,48(2):415-422.
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