鄂尔多斯盆地志靖地区长6段油藏特征与勘探潜力分析

A- nalysis on reservoir characteristics and exploration potential of Chang6 member in Zhijing area of Eerduosi Basin.

对鄂尔多斯盆地志靖地区长6段油藏的地质特征、成藏机理及控制因素进行系统研究,指出储层特征及运移距离是长6段油藏形成与油气富集的主控因素。成藏规律研究认为,目前该区勘探程度仍然很低,位于生油坳陷边缘的五里湾—杏河—侯市—王窑一带及其西南,由于储层物性好,油层含水低,开发效果好,为近期勘探开发的主要目标区;杨米涧—青阳岔一带由于成藏条件较差,为远景勘探目标区。

Geologic features, reservoir - forming mechanism and controlling factors of Chang 6 oil reservoirs in Zhijing area of Eerduosi Basin are studied systematically. And it is pointed out that the reservoir characteristics and the migration distance are the main controlling factors of oil pool forming and oil -gas enrichment. Based on the study of the reservoir-forming rule, it is considered that the degree, of prospecting is still very low. Wuli-wan-Xinghe-Houshi-Wangyao area and its southwest, which lies to the edge of the source sag, can be regarded as the main target of short -term exploration and development for its good reservoir physical properties, low water cut of oil-bearing formations and good development effect. Yanmijian -Qingyangcha area is one of long-term exploration targets for its poor reservoir-forming conditions.