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胶结指数m是储层固结特征、孔隙结构特征及黏土矿物等地质因素的综合反映。济阳坳陷不同成岩带碎屑岩的储层岩电实验结果表明,次生孔隙的存在导致m值减小,泥质附加导电作用对泥质储层m值的影响受地层水矿化度大小的控制。固结程度好的储层,m值趋于稳定。深成岩带m值接近2,超深成岩带受次生子孔隙发育的影响,m值趋于减小。中、浅成岩带由于岩石固结程度差,储层性质复杂,m值的变化范围大,总体上反映出复杂孔隙结构特征的高值。
The cementation index m is a comprehensive reflection of the consolidation characteristics of the reservoir, the characteristics of pore structure and the geological factors such as clay minerals. The experimental results of reservoir rocks in different diagenetic clastic rocks in Jiyang Depression show that the existence of secondary pores leads to the decrease of m and the influence of additional mud conductivity on the m value of muddy reservoirs is affected by the formation water salinity Size control. Consolidation of a good reservoir, m value tends to be stable. The m-value of the deep pluton is close to 2, the ultra-deep diagenetic zone is affected by the development of the secondary pore and the m value tends to decrease. Medium and shallow diagenetic zones reflect the high value of complex pore structure as a whole due to the poor consolidation of rocks, complex reservoir properties and wide range of m values.