摘要
直接采用孔渗关系求解研究区葡萄花油层的渗透率时,所得渗透率与岩心分析渗透率存在较大误差,尤其在孔隙度为11％～15％时,误差尤为明显.针对这种情况,对孔隙度小于11％、11％ ～15％、大于15％三种情况分段求取孔渗关系,并定义去泥孔隙度.当孔隙度为11％ ～15％时,用去泥孔隙度代替原有孔隙度,研究泥质校正后的孔渗关系.结果表明：分段法求得的孔渗关系精度较高.工区400余口井的测井解释验证了分段法求得的渗透率较直接采用孔渗关系求得的渗透率更加精确.该研究为工区油田进一步开发提供了基础.
This paper is directed at an improved alternative to the direct application of the relation- ship between porosity and permeability in Putaohua reservoir for permeability calculation--the convention- al method suffering from a bigger error than permeability core analysis, especially when porosity varies between 11% and 15%. The study involves sectionally seeking and obtaining the relationship between porosity and permeability in response to three cases, such as the porosity smaller than 11% , porosity var- ying from 11% to 15% , and porosity greater than 15% , and defining a new concept named Mud -free Porosity; and replacing porosity with Mud-free Porosity in the case of porosity ranging from 11% to 15% and thereby identifying the relationship between porosity and permeability after slime emendation. The re- sults show that the novel method boasts a more accurate relationship between porosity and permeability and log interpretation of more than 400 wells located in study area verifies that the method gives a more accurate permeability than conventional one. This study may provide a basis for the further developmentof oil fields.
出处
《黑龙江科技大学学报》
CAS
2015年第4期417-420,共4页
Journal of Heilongjiang University of Science And Technology
关键词
砂岩
测井
孔渗关系
渗透率
去泥孔隙度
泥质含量
shaly sand
log
relationship between porosity and permeability
permeability
porosityafter slime emendation
shale content
