摘要
方法 在分析正态分布法、指数分布法、X2 (n)分布法及矩法确定低渗透砂岩储层岩石孔隙结构特征参数适用性基础上 ,研究了用矩法确定的低渗透砂岩储层岩石孔隙结构特征参数以及孔隙结构复合特征参数对水驱油效率的影响。目的 探讨确定低渗透砂岩储层岩石孔隙结构特征参数的有效方法 ,提高低渗透砂岩储层岩石孔隙结构特征参数在油田开发中的应用。结果 正态分布法、指数分布法及X2 (n)分布法不能确定低渗透砂岩储层岩石孔隙结构特征参数 ;可以用矩法确定低渗透砂岩储层岩石孔隙结构特征参数 ,其复合特征参数与水驱油效率有明显的正相关性。结论 由矩法确定的孔隙结构复合特征参数能有效地综合描述低渗透砂岩储层岩石孔隙结构的复杂性 ,还可以预测低渗透砂岩储层水驱油效率。
Method\ Based on analysis about applicability of four methods, i. e. normal distribution, exponential distrbution, X\+2(n) distribution and rectangular method, in detemining characteristics parameters of pore structure in low pemeability sandstone formation, special attention is laid upon application of rectangular method in this process and influtnce of these parameters upon water displacement efficiency. Purpose\ To discuss methods wich can detemine these required Parameter in efficient way and improve their application and significance in developing oil field. Result\ Although characteristics parameter of pore stucture in low pemeability sandstone reservoir can not be detemined with methods like normal distribution, exponential distrbution and X\+2(n) distribution, but can be obtained from rectangular method and found the apparent relationship between complex ones with water displacement effciency. Conclusion\ Complex characteristics parameters of pore structure determined from rectangular method can effectively and comprehensively describe the complexity of pore structure in low pemeability sandstone reservoir, and predict water displacement efficiency in same resrvoir.
出处
《特种油气藏》
CAS
CSCD
1999年第4期25-28,共4页
Special Oil & Gas Reservoirs
关键词
砂岩
孔隙结构
渗透率
储集层
低渗透油田
岩石
low permeability sandstone reservoir, pore structure, pemeability ,pore throat even size, complex characteristics parameter, oil displacement effciency
