CAJ | 학술논문

由于复杂孔隙结构和强非均质性，胶结指数（m）不再是一个固定常数，饱和度的定量计算成为一个难题。针对这一问题，探索了高精度m值模型的建立方法。基于疏松砂岩、中等砂岩、致密砂岩、砾岩、凝灰岩、角砾岩、玄武岩、安山岩、英安岩和流纹岩10种岩性，首先分析了m值、饱和指数（n）的变化给饱和度的计算带来的影响，得出m值的变化对饱和度的影响更大；其次，基于Max-well导电方程，发现了m值与有效孔隙度和导电孔隙度差值之间存在强线性正相关的关系，而导电孔隙度与有效孔隙度之间的关系并不是一成不变的，其关系表现为线性、指数、乘幂和多项式，并建立了m值与有效孔隙度之间的通用表达式。采用伊拉克米桑油田AG-3井高精度m值模型，分别处理AG-3井的白云岩和石灰岩储层，通过与岩心分析的结果进行对比，可知高精度m值模型改进了碳酸盐岩储层饱和度的计算精度，并为复杂孔隙型储层饱和度的定量评价奠定了一定的理论和实践基础。
유우복잡공극결구화강비균질성，효결지수（m）불재시일개고정상수，포화도적정량계산성위일개난제。침대저일문제，탐색료고정도m치모형적건립방법。기우소송사암、중등사암、치밀사암、력암、응회암、각력암、현무암、안산암、영안암화류문암10충암성，수선분석료m치、포화지수（n）적변화급포화도적계산대래적영향，득출m치적변화대포화도적영향경대；기차，기우Max-well도전방정，발현료m치여유효공극도화도전공극도차치지간존재강선성정상관적관계，이도전공극도여유효공극도지간적관계병불시일성불변적，기관계표현위선성、지수、승멱화다항식，병건립료m치여유효공극도지간적통용표체식。채용이랍극미상유전AG-3정고정도m치모형，분별처리AG-3정적백운암화석회암저층，통과여암심분석적결과진행대비，가지고정도m치모형개진료탄산염암저층포화도적계산정도，병위복잡공극형저층포화도적정량평개전정료일정적이론화실천기출。
Due to complex structures and strong heterogeneity of pores,the cementation exponent ( m )is no longer a constant,thus itis difficult to quantificationally evaluate the saturation of porous carbonate reservoirs.In order to solve this problem,a high-precision m model was build.Based on lithologies of loose,medium and tight sandstones,conglomerate,tuff,breccia,basalt,andesite,daciteand rhyolite,firstly,to analyse the impact on the saturation caused by changes in m and the saturation index (n),it can be foundthat the change of m affects the saturation largely.Secondly,on the basis of the Maxwell equation,a strong linear correlation be-tween m and the difference in the effective porosity and conductive porosity was discovered.This correlation was found changeableand behaving in a linear,exponential,power or polynomial format,so a general expression between m and the effective porosity wasdeduced.A high-precision m model of Well AG-3 in a certain oilfield of Iraq was applied to dealing with the dolomite and limestonereservoirs in Well AG-3,respectively.The results were compared with those of core analysis,indicating that the high-precision m model had improved the calculation accuracy of the saturation of porous carbonate reservoirs and laid a theoretical and practical foun-dation for the quantitative evaluation of the saturation of complex porous reservoirs.