CAJ | 학술논문

碳酸盐岩储层导电机理复杂，电阻率影响因素众多，储层划分及流体性质识别难度较大。通过构建合理的孔隙结构物理模型，理论模拟储层电阻率，并对各种影响因素（喉道粗细、地层水电阻率、岩石基质电阻率、孔洞延展方向及大小等）逐一进行分析，进一步探讨了各因素对电阻率的影响程度，较好地解释了电阻率异常层的成因。孔洞型储层电阻率随喉道直径增加快速下降，而随基质、地层水电阻率增加而增大；平行电流方向的孔洞延展对电阻率的影响高于垂直电流方向的孔洞延展，孔洞尺寸沿着电流方向增大，电阻率呈降低趋势。喉道直径对电阻率的影响高于孔洞尺寸；喉道直径对全含水岩石电阻率的影响大于全含油，而岩石基质电阻率、地层水电阻率、孔洞延展方向及大小则相反。
탄산염암저층도전궤리복잡，전조솔영향인소음다，저층화분급류체성질식별난도교대。통과구건합리적공극결구물리모형，이론모의저층전조솔，병대각충영향인소（후도조세、지층수전조솔、암석기질전조솔、공동연전방향급대소등）축일진행분석，진일보탐토료각인소대전조솔적영향정도，교호지해석료전조솔이상층적성인。공동형저층전조솔수후도직경증가쾌속하강，이수기질、지층수전조솔증가이증대；평행전류방향적공동연전대전조솔적영향고우수직전류방향적공동연전，공동척촌연착전류방향증대，전조솔정강저추세。후도직경대전조솔적영향고우공동척촌；후도직경대전함수암석전조솔적영향대우전함유，이암석기질전조솔、지층수전조솔、공동연전방향급대소칙상반。
Because of the many factors influencing the resistivity of carbonate reservoir and the complex conductive mecha-nism,it is difficult to identify the reservoir and interpret the property of fluids. On the basis of pore-structure physical model, we simulated the resistivity of reservoir,and analyzed the factors which affect the resistivity of reservoir. The factors include the throat size,the resistivity of formation water,and the resistivity of matrix,and the vuggy size,and so on. At last,the influencing degree to resistivity of reservoir is discussed and the reason of abnormal resistivity in carbonate is interpreted in this paper. The resistivity of reservoir gradually reduces with the throat diameter increasing,and increases as the resistivity of matrix and formation water increases. Vuggy extension influence on resistivity along the direction of the current is higher than that along the vertical current direction. With the vuggy size along current direction increasing,the resistivity reduces. The effect of throat diameter on the resistivity of reservoir is bigger than vuggy size. The effect of throat diameter on the resistivity of completely water-saturated rocks is bigger than on completely oil-saturated rocks,but for the resistivity of the matrix and the formation water,the extended direction and size of the vuggy,the condition is opposite.