TD油田致密砂岩储层物性下限确定及分类研究
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摘要
TD油田志留系碎屑岩储层为大段的致密砂岩,孔隙类型多样且结构复杂,部分储层与围岩电性特征差别不大,使得有效储层的准确识别及分类评价困难,针对这一问题从岩心实验分析资料入手,利用最小孔喉半径法、束缚水饱和度法和经验统计法综合确定了储层的物性下限,在此基础上利用储层品质指数RQI和束缚水饱和度对储层进行分类评价,研究结果对储层评价和储量提交均具有很好的指导意义。
The clastic reservoir of Silurian are large segment sandstone in TD oilfield, its pore types are diverse and complex, and the electrical characteristics of some reservoirs are basically similar to the surrounding rocks, the accurate identification and classification evaluation of effective reservoir are difficult. In view of this problem, the minimum pore throat radius, irreducible water saturation and the empirical statistics method were used to determine the cutoffs of the physical properties of the reservoir based on the core experiment analysis data. The reservoir quality index RQI and irreducible water saturation were used to classified and evaluated. the results of the study have a good guiding significance for the reservoir evaluation and reserves submission.
The clastic reservoir of Silurian are large segment sandstone in TD oilfield, its pore types are diverse and complex, and the electrical characteristics of some reservoirs are basically similar to the surrounding rocks, the accurate identification and classification evaluation of effective reservoir are difficult. In view of this problem, the minimum pore throat radius, irreducible water saturation and the empirical statistics method were used to determine the cutoffs of the physical properties of the reservoir based on the core experiment analysis data. The reservoir quality index RQI and irreducible water saturation were used to classified and evaluated. the results of the study have a good guiding significance for the reservoir evaluation and reserves submission.
引文
[1]李幸运、郭建新,气藏储集层物性参数下限确定方向研究[J],天然气勘探与开发,2008,31(3):33-38.
[2]高阳、蒋裕强,最小流动孔喉半径法确定低渗储层物性下限[J],科技导报,2011,29(4):34-38.
[3]黎菁、赵峰、刘鹏,苏里格气田东区致密砂岩气藏储层物性下限的确定[J],天然气工业,2012,32(6):31-35.
[4]张程恩、潘保芝、刘倩茹,储层品质因子RQI结合聚类算法进行储层分类评价研究[J],国外测井技术,2012,36(4):11-13.
[5]孟祥水、何长春,核磁共振测井在致密含气砂岩储层评价中的应用[J],测井技术,2003,27(增刊):1-4.
[6]宇传华,SPSS与统计分析[M],北京:电子工业出版社,2007,459-493.
[2]高阳、蒋裕强,最小流动孔喉半径法确定低渗储层物性下限[J],科技导报,2011,29(4):34-38.
[3]黎菁、赵峰、刘鹏,苏里格气田东区致密砂岩气藏储层物性下限的确定[J],天然气工业,2012,32(6):31-35.
[4]张程恩、潘保芝、刘倩茹,储层品质因子RQI结合聚类算法进行储层分类评价研究[J],国外测井技术,2012,36(4):11-13.
[5]孟祥水、何长春,核磁共振测井在致密含气砂岩储层评价中的应用[J],测井技术,2003,27(增刊):1-4.
[6]宇传华,SPSS与统计分析[M],北京:电子工业出版社,2007,459-493.