中庄、屈家沟区块长6储层分类及产能评价

Reservoir Classification and Productivity Evaluation of Chang 6 in Zhongzhuang Oilfield and Qujiagou Oilfield

研究区长6储层属于低孔、低渗储层,储层的储集性能对于后期的开采有重要影响。利用实测岩心物性数据和测井解释模型所得的物性数据,采用概率统计分级原则,确定适合研究区实际的低孔渗储层物性参数三级相对评价分级标准,根据标准可以将长6储层分成Ⅰ、Ⅱ、Ⅲ三类,并可知长61属于Ⅰ类储层,长62属于Ⅱ类储层,长63属于Ⅲ类储层,研究区长6储层的储集性能从上而下逐渐变差。研究区初月日产量与物性成正相关关系,Ⅰ类储层初月日产能大于1.5 t/d;Ⅱ类储层初月日产能大于0.56 t/d,小于1.5 t/d;Ⅲ类储层初月日产能小于0.56 t/d。通过对长61和长62试采产能平面分布的研究,说明采用的分类标准简单实用。

Chang 6 reservoir of the study area belongs to low porosity and low permeability reservoir,the reservoir properties is important for mining in the late. Using the physical property data of measured core and logging inter-pretation model,and using probability statistical classification principle,which determines the three-level classifi-cation relative evaluation standard which suitable for the study area actual low permeability reservoir physical prop-erty parameters. According to the standard,Chang 6 reservoir can be divided into three categories,which areⅠ,Ⅱand Ⅲ. According to the standard：Chang 61 belongs to class I reservoir,Chang 62 belongs to class Ⅱ reservoirs, Chang 63 belongs to the classⅢreservoir,reservoir property of Chang 6 reservoir from top and bottom gradually be-comes poor. daily output of the first month in the study area and the property into a positive correlation,daily output of the first month,that of the class I is more than 1. 5 t/d;that of the class II is more than 0. 56 t/d,and less than 1. 5 t/d,that of the classⅢis less than 0. 56 t/d. the distribution of the plane capacity,illustrate that the classifica-tion standard is simple and practical.