鄂尔多斯盆地马家沟组储集层特征及其预测方法  

Reservoir types and prediction of Majiagou Formation in the Ordos Basin

作　　者：周进高[1] 邓红婴[2] 郑兴平[2] 

机构地区：[1]西南石油学院 [2]中国石油勘探开发研究院杭州地质研究所

出　　处：《石油勘探与开发》2003年第6期72-74,共3页Petroleum Exploration and Development

摘　　要：鄂尔多斯盆地奥陶系马家沟组碳酸盐岩储集层储集类型为风化壳岩溶型,主要岩石类型有含硬石膏结核溶模孔粉晶白云岩、斑状白云岩、颗粒白云岩等,受沉积相、成岩相和古岩溶地貌因素的影响,储集层非均质性强。针对储集层特点,利用地质叠图法,将沉积相图、成岩相图和岩溶古地貌图叠合,预测非均质储集层的发育、保存与上述因素之间的关系。预测的3块有利储集层分布区与实际钻探结果十分吻合。The carbonate reservoir of Majiagou Formation (O_(2)m) in the Ordos Basin is karst ones, and can be divided into four types based on lithology: nodular gypsum-bearing dolomite, grain dolomite, porphyritic dolomite and gravity-flow depositing dolorudite. The reservoirs are very heterogeneous and the key factors that lead to the reservoir heterogeneity would be the sedimentary microfacies, diagenetic facies and paleokarst morphologic unit. Compiling sedimentary facies maps, compiling digenetic facies maps and paleokarst morphologic map; the favourable reservoir zone would be drawed according to comparing hereinbefore maps. The predicted 3 reservoirs distributed areas are copy to the drilled results.

关 键 词：鄂尔多斯盆地 马家沟组 沉积相 成岩相 储集层非均质性 储集层预测 

分 类 号：TE121[石油与天然气工程—油气勘探]