CAJ | 학술논문

阿尔奇公式中的岩电参数并不是固定的、孤立的。通过28块亲水性砂岩的岩电实验结果得出，低孔隙样品的岩电参数明显不同于中高孔隙样品，地层因素与孔隙度在双对数坐标下并不满足经典的阿尔奇线性关系，呈二次函数关系，胶结指数为孔隙度的函数，不为固定值；另外饱和度指数都受地层水矿化度的影响较大，并且随地层水矿化度的增大而增大。根据研究地区的岩电实验结果，分别确定了低孔隙度和中高孔隙度下岩电参数的取值，修正并优化了常用的阿尔奇公式。通过修正后的模型在研究地区油层段计算的含水饱和度与束缚水饱和度的比较中，绝对误差降低到3.40％，表明经修正后的岩电参数计算的含水饱和度更加精准，可用于实际的测井定量评价。
아이기공식중적암전삼수병불시고정적、고립적。통과28괴친수성사암적암전실험결과득출，저공극양품적암전삼수명현불동우중고공극양품，지층인소여공극도재쌍대수좌표하병불만족경전적아이기선성관계，정이차함수관계，효결지수위공극도적함수，불위고정치；령외포화도지수도수지층수광화도적영향교대，병차수지층수광화도적증대이증대。근거연구지구적암전실험결과，분별학정료저공극도화중고공극도하암전삼수적취치，수정병우화료상용적아이기공식。통과수정후적모형재연구지구유층단계산적함수포화도여속박수포화도적비교중，절대오차강저도3.40％，표명경수정후적암전삼수계산적함수포화도경가정준，가용우실제적측정정량평개。
The lithological electrical parameters in Archie formula are relative as opposed to fixed and isolated.The li-thological electrical experimental results obtained from 28 pieces of hydrophilic sandstones show that the lithological elec-trical parameters in low porosity samples are distinctly different from those in high porosity samples.The relationship be-tween formation factor and porosity is not the Archie linear relation,but a quadratic function relationship.The cementation index,which is not a fixed value,is a function of porosity.The saturation index is greatly influenced by the salinity of for-mation water,and increases with the increasing of formation water salinity.Based on the lithological electrical experimental results of the research area,the electrical parameter values in low porosity and high porosity rock are confirmed separately, and the common Archie formula is corrected and optimized.In the comparison of the water saturation and irreducible water saturation calculated by the revised model in reservoir section of study area,the absolute error reduced to 3.40%,showing that the water saturation calculated by the modified rock electrical parameters is more accurate,and can be used for the quantitative evaluation of actual logging.