| 鄂尔多斯盆地镇泾地区长8段致密砂岩油藏成藏孔隙度下限研究 |
| |
| 引用本文： | 潘高峰,刘震,赵舒,王菁.鄂尔多斯盆地镇泾地区长8段致密砂岩油藏成藏孔隙度下限研究[J].现代地质,2011,25(2):271-278. |
| |
| 作者姓名： | 潘高峰 刘震 赵舒 王菁 |
| |
| 作者单位： | 1. 中国石油大学油气资源与探测国家重点实验室,北京,102249
2. 中国石化华北分公司勘探开发研究院,河南郑州,450006 |
| |
| 摘 要： | 鄂尔多斯盆地镇泾地区长8段现今含油储层孔隙度和渗透率下限分别为4%和0.03×10-3μm2,属于特低孔低渗油藏。主成藏期、成岩作用、埋藏史及模拟实验研究结果表明,高致密油藏缘于成藏后储层致密化。传统方法是通过统计现今含油物性下限作为成藏物性下限,这种方法不适用于成藏后再致密油藏的研究。以现今储层含油物性下限为切入点,利用砂岩孔隙度演化规律,对现今储层含油物性下限进行成藏后孔隙度损失量补偿,从而求取油气成藏孔隙度下限,利用该方法得出镇泾地区长8段石油成藏孔隙度下限为10.5%。研究表明成藏物性下限是镇泾地区长8段成藏的主控因素之一,只有成藏期孔隙度大于成藏孔隙度下限时油气才可能进入圈闭成藏。
|
| 关 键 词： | 镇泾地区 致密砂岩油藏成因 成藏孔隙度下限 成藏主控因素 鄂尔多斯盆地 |
The Study on Lower Limit of Porosity for Oil Accumulation in Chang-8 Member, Zhenjing Area, Ordos Basin |
| |
| PAN Gao-feng,LIU Zhen,ZHAO Shu,WANG Jing.The Study on Lower Limit of Porosity for Oil Accumulation in Chang-8 Member, Zhenjing Area, Ordos Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(2):271-278. |
| |
| Authors: | PAN Gao-feng LIU Zhen ZHAO Shu WANG Jing |
| |
| Institution: | PAN Gao-feng1,LIU Zhen1,ZHAO Shu 2,WANG Jing1 (1.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China,2.Exploration and Production Research Institute,Huabei Branch Company of SINOPEC,Zhengzhou,Henan 450006,China) |
| |
| Abstract: | Lower cutoff values of the porosity and permeability of oil-bearing reservoir are as low as 4% and 0.03×10-3 μm2 within Chang-8 Member which is typically high-tight reservoir in Zhenjing area.The integrated study of oil accumulation stages,diagenesis,burial history and simulation experiment reveals that the genesis of the high-tight oil reservoir is largely due to strata getting tighter after hydrocarbon accumulation.Traditional method which takes the statistical lower cutoff of current oil-bearing property as the critical physical property of oil accumulation does not be applied in tight sandstone reservoir.This paper presents a new approach to assess the lower limit value of porosity for oil accumulation,by taking porosity evolution of sandstone into consideration,and adding the loss of porosity after oil accumulation to current lower cutoff value of oil-bearing properties.The study shows that the lower limit value of porosity for oil accumulation in Chang-8 Member in Zhenjing area is 10.5%.Statistics indicates that the value is the main control parameter for oil accumulation in this reservoir,and oil could not accumulate until the porosity exceeds accumulating lower limit value. |
| |
| Keywords: | Zhenjing area genesis of tight sandstone reservoir lower limit of porosity for oil accumulation main control parameters for oil accumulation Ordos Basin |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
