四川盆地铁山坡地区飞仙关组鲕滩储层地震预测
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摘要
四川盆地东北部的三叠系下统飞仙关组是重要的油气储层,其储集岩体主要为经晚期白云岩化改造的鲕滩坝沉积的致密鲕粒白云岩、鲕粒灰岩。铁山坡地区位于开江-梁平海槽的东北边缘,具备发育飞仙关组鲕滩储层的条件。但是,复杂多变的围岩和严重的非均质性增加了储层预测的难度,为此,在储层预测中采用了基于信息融合理论的地质模型约束地震反演,把地质、测井、地震等多元地学信息统一到同一个模型上,将各类信息在模型空间进行有机融合,提高了反演的信息使用量、信息匹配精度和反演结果的置信度。同时,利用空间地质约束相干识别技术对储层的含气、含水及气水关系等进行了检测和识别,检测结果与钻井资料吻合。
Feixianguan Formation of lower Triassic is an important reservoir, which mainly consists of the dense oolitic dolomite and limestone altered by the late dolomitization of oolitic bars. Tieshanpo area is located in the northeast edge of Kaijiang-Liangping trough during the Feixianguan Period where is very favorable to form oolitic shoal reservoir. The seismic inversion constrained by geological model and based on theory of information fusion is used in reservoir prediction. Much geosciences information is unify to the same model including geology, well logging, seismic and so on, and is fused organically in model space to increase the information, improve the information matching and confidence. At the same time, the technique of coherent interpretation constrained by geology also made preferable effect in the reservoir prediction of gas, water and their relationship.
Feixianguan Formation of lower Triassic is an important reservoir, which mainly consists of the dense oolitic dolomite and limestone altered by the late dolomitization of oolitic bars. Tieshanpo area is located in the northeast edge of Kaijiang-Liangping trough during the Feixianguan Period where is very favorable to form oolitic shoal reservoir. The seismic inversion constrained by geological model and based on theory of information fusion is used in reservoir prediction. Much geosciences information is unify to the same model including geology, well logging, seismic and so on, and is fused organically in model space to increase the information, improve the information matching and confidence. At the same time, the technique of coherent interpretation constrained by geology also made preferable effect in the reservoir prediction of gas, water and their relationship.
引文
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2刘殊,甘其刚.碳酸盐岩沉积相分析在飞仙关组鲕滩储 层预测中的应用[J].勘探地球物理进展,2003,26(3): 190-198
3王一刚,刘划一,文应初,等.川东北飞仙关组鲕滩储层 分布规律、勘探方法与远景预测[J].天然气工业, 2002,22(增刊):14-18
4凡睿,高林,何莉,等.川东北飞仙关组鲕滩储层地震预 测[J].勘探地球物理进展,2003,26(3):199-203
5谢芳,李志荣,肖富森,等.四川盆地东北部飞仙关组鲕 滩储层地震预测技术[J].天然气工业,2004,24(1): 34-36
6黄花香,吴战培,熊艳,等.速度反演技术在四川盆地储 层预测中的应用[J].石油物探,2002,41(4):456-460
7蒲勇,陈祖庆,田江.地震属性技术在碳酸盐岩鲕滩储层 预测中的应用[J].石油物探,2004,43(增刊):63-66
8刘映辉,敬朋贵,尹正武.南方新区油气勘探与地震属性 技术[J].石油物探,2004,43(增刊):48-50
9刘文岭,牛彦良,李刚,等.多信息储层预测地震属性提 取与有效性分析方法[J].石油物探,2002,41(1): 100-106
10何碧竹,周杰,汪功怀.利用多元地震属性预测储层信 息[J].石油地球物理勘探,2003,38(3):258-262
11杨凤丽,张善文.多场信息预测基岩潜山裂缝性油气储 层——CB潜山应用实例[J].石油地球物理勘探, 2001,36(3):319-325
12尹兵祥,王尚旭,蔡国钢,等.辽河坳陷黄沙坨油田沙三 段粗面岩储层地震预测[J].石油学报,2005,26(3): 33-36
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