山东胜利油田车镇地区下古生界碳酸盐岩潜山储集层特征

碳酸盐岩潜山储层研究一直是油气地质研究领域的一个难点。以大量的岩心、薄片观察为基础 ,对研究区的岩石学特征进行描述 ,进而提出研究区 5种主要的储渗空间类型 :溶蚀孔隙型、溶蚀孔洞型、大型洞穴、风化裂隙型以及构造裂隙型储渗空间。通过研究认为 ,这 5种储渗空间构成了研究区的 5类储层 :风化裂隙型储层、构造裂隙型储层、裂隙孔洞型储层、溶蚀孔洞型储层以及洞穴型储层 ,其中以风化裂隙型储层、裂隙—孔洞型储层以及溶蚀孔洞型储层为主。结合钻井、录井、测井、试井资料 ,对 5类储层的特征进行总结 ,从而进一步对潜山储层发育作出评价 ,将研究区储层发育带分为 3类 ,提出车镇地区下古潜山储层主要沿北东—南西方向呈条带状规律展布的观点。

RESERVOIR CHARACTERISTICS OF LOWER PALEOZOIC CARBONATE BURIED HILL IN CHEZHEN ZONE,SHENGLI OIL FIELD,SHANDONG PROVINCE

The reservoir investigation of carbonate buried hill is characterized by its complexity and difficulty in the field of petroleum geology. Based on the thoroughly observation of core datum and thin section, the petrological characteristics of the study area was described, and thus five storage spaces were proposed: corroded pore, corroded cavity, cave, weathering fissure and structural fissure. The five storage spaces formed five reservoir types: weathering fissure, fissure-cavity, corroded cavity, structural fissure and cavern,in which the first three types are the most important ones. Combined with the drilling, mud logging, well logging and well test data, the five reservoir types were analyzed and the carbonate buried hill reservoir was evaluated to be divided into three types. The result indicates that the carbonate reservoirs distribute as stripes in the direction from northeast to southwest.