塔中地区中古48井区鹰山组二段碳酸盐岩储集层地震预测  

Seismic Prediction of Ordovician Yingshan 2nd Carbonate Reservoirs in Well ZG-48 Area in Tazhong Uplift,Tarim Basin

作　　者：刘鑫[1] 韩兴杰[1] 敬兵[1] 张海祖[1] 张敏[1] 张强[2] 

机构地区：[1]中国石油塔里木油田公司勘探开发研究院 [2]中国石油大学(北京)地球科学学院

出　　处：《海相油气地质》2013年第1期13-18,共6页Marine Origin Petroleum Geology

摘　　要：塔中地区中古48井区储层集中发育在奥陶系鹰山组二段,该段又划分为上亚段和下亚段。依据钻井资料,标定了不同层段、不同物性储集层的地震反射特征。利用地震资料提取不同层段的地震振幅属性,开展了钻后储集层地震预测与描述。储集层划分为Ⅰ、Ⅱ、Ⅲ类三种级别,它们总体沿构造高地和断裂带分布。上亚段厚度110m左右,储集层主要分布在鹰山组顶面向下100 m的范围内,沿不整合面都很发育,但Ⅰ类储集层在构造低部位分布较少;下亚段厚度260 m左右,储集层主要分布在鹰山组顶面向下110～200 m的范围内,它与构造和断裂发育带的关系更为紧密,在构造较低部位欠发育。下亚段Ⅰ类储集层要明显多于上亚段,中古45井已在下亚段获得高产油气流,说明下亚段储集层也有很大的勘探潜力。本区应该坚持上、下亚段两套目的层并举的勘探方向。The Middle-Lower Ordovician Yingshan 2nd Member carbonate reservoirs are developed in Well ZG-48 area, Tazhong, Tarim Basin. The 2nd Member of Yingshan Formation can be divided into the Upper and the Lower Submembers. According to drilling data, the seismic reflections of different submembers and reservoirs are calibrated. According to seismic amplitude properties, the seismic prediction and evaluation are carried out for the carbonate reservoirs after drilling. The reservoirs are divided into Types Ⅰ, Ⅱ and Ⅲ in decreasing grade. It is shown that the Upper and the Lower Submember reservoirs are about 110m thick mad about 260m thick respectively and distribute in the range of downward 0-100m and 110-100m respectively beneath the top surface of Yingshan Formation. The Upper Submember reservoirs develop well along the unconformity surface but Type I reservoirs are less in lower lo- cation of the anticline. The Lower Submember reservoirs that are thicker than the Upper ones are close related with faults. It is evalu- ated that the Types I reservoirs are obviously more in the Lower Submember than in the Upper Submember. Commercial oil flow has been drilled out at the Lower Submember in Well ZG-45, which implies good prospecting potential also in the Lower Submember.

关 键 词：碳酸盐岩储层 储集层预测 地震预测 塔中地区 鹰山组 

分 类 号：TE112.23[石油与天然气工程—油气勘探]