摘要
渤海11个砂岩油田实测资料统计结果表明,岩石压缩系数对原始地层压力与孔隙度均有较强的敏感性,岩石压缩系数与原始地层压力呈幂函数关系,与孔隙度呈指数关系。利用多元线性回归方法,建立了适合渤海砂岩油田的岩石压缩系数经验公式,利用BH-12油田实际测试数据进行验证,本文建立的经验公式的计算误差远小于Hall方法及Newmen方法的计算误差,说明了新建公式的可靠性。
An statistical analysis of observed data in 11 sandstone oilfields,Bohai sea,has indicated that the rock compressibility is sensitive to both initial formation pressure and porosity,having a power function with initial reservoir pressure and an exponential function with porosity respectively.The method of multiple linear regression is used to establish an empirical formula of rock compressibility for the sandstone oilfields in Bohai sea.By a check applying the testing data from BH-12 oilfield,it is found that this empirical formula is much lower in calculation error than Hall＇s and Newmen＇s methods,indicating the reliabilty of the new formula.
出处
《中国海上油气》
CAS
北大核心
2010年第5期317-319,共3页
China Offshore Oil and Gas
关键词
渤海砂岩油田
岩石压缩系数
经验公式
地层压力
孔隙度
sandstone oilfields in Bohai sea
rock compressibility
empirical formula
reservoir pressure
porosity
