塔河油田岩溶型碳酸盐岩缝洞单元综合评价

金强; 田飞; 张宏方

doi:10.11781/sysydz201503272

塔河油田岩溶型碳酸盐岩缝洞单元综合评价

doi: 10.11781/sysydz201503272

1.
中国石油大学(华东)地球科学与技术学院, 山东青岛 266580
2. 中国科学院地质与地球物理研究所, 北京 100029
3. 中国石化石油勘探开发研究院, 北京 100083

基金项目: 国家重点基础研究发展计划(973计划) 项目"碳酸盐岩缝洞型油藏缝洞单元形成机制及模式研究" (2011CB201001)和中国石化科技部项目"塔河油田缝洞成因机制与结构模式研究"(P11090)资助.

详细信息

作者简介:
金强(1956-),博士生导师,教授,从事油气地质和地球化学研究.E-mail:jinqiang@upc.edu.cn.

中图分类号: TE122.2
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出版历程
- 收稿日期: 2014-12-17
- 修回日期: 2015-03-13
- 刊出日期: 2015-05-28

Comprehensive evaluation of fracture-cave units in karst carbonates in Tahe Oilfield, Tarim Basin

1.
School of Geosciences, China University of Petroleum, Qingdao, Shandong 266580, China
2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
3. SINOPEC Petroleum Exploration & Production Research Institute, Beijing 100083, China

摘要

摘要: 岩溶型碳酸盐岩缝洞储集空间非常复杂,如何识别和评价相互连通具有一个油藏特征的缝洞单元,是该类油藏基础性储层地质工作的难题。通过岩溶地质分带、不同岩溶带缝洞成因结构和岩溶缝洞充填物成因规律研究,提出了四步法识别缝洞单元的方法,即确定缝洞成因结构及缝洞单元边界、查明缝洞充填物类型和分布、静态分析缝洞充填物和洞缘储集物性、动态分析缝洞单元内井间连通性。这个四步法识别缝洞单元本身就是对其进行的综合评价,然后还要对缝洞单元进行产油潜力等方面的评价。通过对塔河油田主体区若干缝洞单元的应用,取得了重新认识缝洞形成和充填过程、动静态相结合的综合评价结果。
- 缝洞成因结构 /
- 缝洞连通性 /
- 充填物成因类型 /
- 储集性能 /
- 岩溶储层 /
- 塔河油田 /
- 塔里木盆地
Abstract: Karstified carbonate is a complicated reservoir rock. Some fracture-cave units are connected and occur as oil reservoirs. Based on the studies of karst zones in the weathered crust of Ordovician carbonates, the genetic construction of fracture-caves and the filling materials in fracture-caves, a four-step method to identify and evaluate the fracture-cave units in karstified Ordovician carbonates in the Tahe Oilfield was proposed. Firstly, the genetic construction and boundaries of fracture-cave units were defined. Secondly, the genetic types and distribution of fillings in the caves were identified. Thirdly, the porosity and permeability of the fillings in the caves and the carbonates of cave walls were predicted. Finally, the connectivity between wells in the fracture-cave units were dynamically estimated. The four-step identification of fracture-cave units is a comprehensive evaluation. In addition, oil production potential is predicted for the fracture-cave units. This method was applied to several fracture-cave units in the Tahe Oilfield, which resulted in the re-recognition of reservoir rocks with karst fracture-caves and their contents.
- genetic construction of fracture-cave /
- connectivity of fracture-cave /
- genetic type of fillings in the caves /
- reservoir performance /
- karstified reservoir rock /
- Tahe Oilfield /
- Tarim Basin

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