甘肃陇东地区上三叠统延长组长6、长8沉积特征及低渗响应

史成恩; 罗晓容; 万晓龙; 李亮

甘肃陇东地区上三叠统延长组长6、长8沉积特征及低渗响应

1. 中国科学院地质与地球物理研究所, 北京 100029;

2. 中国石油长庆油田公司勘探与开发研究院, 陕西西安 710021

详细信息

作者简介: 史成恩(1963-),男,甘肃泾川人,博士研究生,从事油气田开发研究与管理工作。E-mail:sce_cq@petrochina.com.cn

中图分类号: TE122.2⁺3

收稿日期: 2006-06-15

SEDIMENTARY DIFFERENCE AND LOW-PERMEABILITY RESPONSE OF THE UPPER TRIASSIC YANCHANG FORMATION IN THE LONGDONG AREA, GANSU-EXAMPLES FROM THE CHANG 6 RESERVOIR IN HESHUI AND CHANG 8 RESERVOIR IN BAIMA

1. Institute of Geology and Geophysics, Chinese Academy Sciences, Beijing 100029;

2. Research Institute of Exploration and Development, Changqing Oilfield Company, Xi'an 710021, Shaanxi

Received Date: 15 June 2006

摘要

摘要: 陇东地区白马区长8储层是在湖盆扩张过程中形成的三角洲前缘水下分流河道沉积,合水区长6储层主要发育三角洲前缘浊积体,为低孔特低渗储层。二者同属西南物源沉积体系的两套储层,由于不同的水动力条件、搬运距离、沉积地形、沉积水深等环境及中等压实强度的影响,形成了该区特低渗储层。储层粒度细、绿泥石不发育和碳酸盐胶结物含量高是导致合水长6₃比白马区长8₁储层物性更差的主控因素。
- 甘肃陇东地区 /
- 延长组 /
- 沉积差异 /
- 低渗响应
Abstract: The Chang 8 reservoir at Baima in the Longdong area consists of delta-front underwater distributary channel deposits formed in the process of lake basin expansion,while the Heshui Chang 6 reservoir was mainly delta-front turbidity sand.They are low-and very low-permeability reservoirs respectively,both belonging to the southwest provenance sedimentary system of the Ordos basin,and the very low-permeability reservoir formed in the area due to different hydrodynamic conditions,transport distances,depositional topographic conditions and depositional water depths,as well as the influence of the moderate compaction strength.The fine grain size,lacking of chlorite and high contents of carbonate cements are the main controlling factors that make the physical properties of the Heshui Chang 6₃ reservoir poorer than those of the Baima Chang 8₁ reservoir.
- Longdong area /
- Yanchang Formation /
- sedimentary difference /
- low-permeability response

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甘肃陇东地区上三叠统延长组长6、长8沉积特征及低渗响应

1. 中国科学院地质与地球物理研究所, 北京 100029; 2. 中国石油长庆油田公司勘探与开发研究院, 陕西西安 710021

作者简介: 史成恩(1963-),男,甘肃泾川人,博士研究生,从事油气田开发研究与管理工作。E-mail:sce_cq@petrochina.com.cn

SEDIMENTARY DIFFERENCE AND LOW-PERMEABILITY RESPONSE OF THE UPPER TRIASSIC YANCHANG FORMATION IN THE LONGDONG AREA, GANSU-EXAMPLES FROM THE CHANG 6 RESERVOIR IN HESHUI AND CHANG 8 RESERVOIR IN BAIMA

1. Institute of Geology and Geophysics, Chinese Academy Sciences, Beijing 100029; 2. Research Institute of Exploration and Development, Changqing Oilfield Company, Xi'an 710021, Shaanxi

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目录

1. 中国科学院地质与地球物理研究所, 北京 100029;

2. 中国石油长庆油田公司勘探与开发研究院, 陕西西安 710021

1. Institute of Geology and Geophysics, Chinese Academy Sciences, Beijing 100029;

2. Research Institute of Exploration and Development, Changqing Oilfield Company, Xi'an 710021, Shaanxi