北部湾盆地乌石凹陷东区流沙港组三段储层物性主控因素及分布规律

曾小明; 邹明生; 张辉; 于佳; 陈晓武; 莫冯阳

doi:10.11781/sysydz201606757

北部湾盆地乌石凹陷东区流沙港组三段储层物性主控因素及分布规律

doi: 10.11781/sysydz201606757

中海石油(中国)有限公司湛江分公司, 广东湛江 524057

基金项目: 中海油“十二五”重大专项“南海西部海域典型低孔低渗油气藏勘探开发关键技术研究及实践”（CNOOCKJ125ZDXM07LTD02ZJ11）资助。

详细信息

作者简介:
曾小明(1987-),男,硕士,工程师,从事储层预测和储层评价研究,E-mail:zengxm4@cnooc.com.cn。

中图分类号: TE122.2
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出版历程
- 收稿日期: 2016-04-28
- 修回日期: 2016-08-26
- 刊出日期: 2016-11-28

Main controls on the distribution of the 3rd member of Liushagang Formation in eastern Wushi Sag, Beibu Gulf Basin

Zhanjiang Branch, CNOOC Ltd, Zhanjiang, Guangdong 524057, China

摘要

摘要: 南海北部湾盆地乌石凹陷东区流沙港组三段扇三角洲储层砂体厚度大、岩性复杂、物性变化快、优质储层展布不清，制约了下一步的开发部署。利用分析化验、钻测井和测试资料，从沉积环境、成岩作用和构造三方面来探讨其对储层物性的控制作用。沉积环境中的泥质杂基含量和分选磨圆对物性影响较大；成岩作用中的压实作用和溶解作用决定了孔隙的后期演化；古构造和断裂系统控制了酸性流体运移方向和路径。靠近大断裂的扇三角洲外前缘近端的水下分流河道储层，由于杂基含量低，分选磨圆较好，溶解作用强，物性较好，产能较高，是研究区的优质储层。
- 主控因素 /
- 流沙港组三段 /
- 优质储层 /
- 扇三角洲 /
- 乌石凹陷 /
- 北部湾盆地
Abstract: Fan delta reservoirs in the 3rd member of Liushagang Formation in the eastern Wushi Sag, Beibu Gulf Basin are characterized by large thickness of sand bodies, complicated lithology, rapid change of physical properties, and unclear distribution of good-quality reservoirs, which restricts further development. The controls of the sedimentary environment, diagenesis and structure on reservoir physical properties were studied using drilling, logging and testing data. Shale content, sorting and psephicity have a huge influence on physical properties. Compaction and dissolution controlled later reservoir porosity evolution. Paleotectonics and fracture systems controlled acid fluid migration direction and path. Underwater distributary channels of the proximal outer fan delta front near the large fault which exhibited low matrix content, good sorting and psephicity, good physical properties, high productivity and were good-quality reservoirs in the study area.
- main control /
- 3rd member of Liushagang Formation /
- good-quality reservoir /
- fan delta /
- Beibu Gulf Basin /

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参考文献(32)

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