基于沉积作用控制的岩性低阻储层流体性质识别技术  

Fluid property identification technology of lithological low-resistance reservoir based on sedimentary control

作　　者：魏玉梅 刘竹杰[2] 吴存燕 孟姝婳 宋宏业 金佳慧 史从越[2] Wei Yumei;Liu Zhujie;Wu Cunyan;Meng Shu-ying;Song Hong-ye;Jin Jia-hui;Shi Cong-yue

机构地区：[1]中国石油集团测井有限公司天津分公司 [2]中国石油天然气股份有限公司大港油田分公司 [3]中国石油集团渤海钻探工程有限公司

出　　处：《国外测井技术》2022年第5期54-57,2,共5页World Well Logging Technology

摘　　要：经典测井解释理论的基础是阿尔奇公式,即油层较相同储层条件下的水层电阻率差异越小,流体性质识别越具有较大的不确定性,因此,电阻率在储层流体性质识别中起着关键的作用,而电阻率又受岩性、物性、含油性、层厚、泥浆性能等多种因素影响。分析了各种因素对电阻率的影响,针对沉积韵律控制的低阻油层,提出了岩性校正方法,降低沉积韵律对电阻率的影响,扩大油、水层电阻率之间的差异,有效区分油水层。应用该方法对21口井进行解释,符合率提高了11个百分点,取得了良好的应用效果。The basis of classical logging interpretation theory is the Archie formula,that is,the smaller the difference in the resistivity of the aquifer under the same reservoir conditions,the greater the uncertainty of the identification of fluid properties,therefore,resistivity plays a key role in the identification of reservoir fluid properties,and the resistivity is affected by various factors such as lithology,physical properties,oiliness,layer thickness,and mud performance.The influence of various factors on resistivity is analyzed,and a lithological correction method is proposed for low-resistance oil layers controlled by sedimentary prosody,which reduces the influence of sedimentary prosody on resistivity,expands the difference between oil and aquifer resistivity,and effectively distinguishes oil-aquifers.The method was applied to explain 21 wells,and the compliance rate increased by 11 percentage points,and good application results were achieved.

关 键 词：岩性低阻油层 沉积韵律 电阻率校正 

分 类 号：P61[天文地球—矿床学]