贺永红;任战利;陈占军;邓亚仁;葛云锦;焦健;李红进;陈西畔;师学耀;

• 1:陕西延长石油集团
• 2:陕西延长石油集团有限责任公司研究院
• 3:西北大学地质学系
• 4:大陆动力学教育部重点实验室

摘要(Abstract)：

富县探区位于鄂尔多斯盆地中部,近年来的勘探成果表明,长8段油藏的储层以细砂岩为主、储层孔隙度介于5%~15%,渗透率一般小于0.5×10~(-3)μm~2,主要发育致密储层,且非均质性明显;长8段油藏没有明显的油藏边界,油水亦无统一的分异界面,开发的主要对象为物性较好、产油量相对较高的"甜点"油藏,生产需经过压裂,上述特征表明长8段油藏为致密型油藏。根据富县探区长8段的地质背景及油藏特征分析,研究认为该区长8段油藏是近源充注的结果,其分布主要受长7段优质烃源岩的展布以及长8段物性较好的"甜点"型储层共同控制;由于区域性地史演化较为稳定,油藏在成藏之后没有发生大的破坏,所以油藏保存条件普遍较好,该因素对油藏的分布不起主要控制作用。根据上述油藏控制因素分析认为,富县探区中南部2个区块不但砂体发育,而且西邻长7段烃源岩发育区,应是长8段成藏的有利区带。

关键词(KeyWords)： 长8段;致密油藏;主控因素;富县探区;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41372128);; 西北大学大陆动力学国家重点实验室科技部专项(BJ08133-1);; 国家重大专项(2011ZX05005-004-007HZ)资助

作者(Author): 贺永红;任战利;陈占军;邓亚仁;葛云锦;焦健;李红进;陈西畔;师学耀;

Email:

DOI: 10.13800/j.cnki.xakjdxxb.2016.0316

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