川东TS-HNT地区飞仙关组鲕滩储层特征及测井资料解释

OOLITIC RESERVOIRS CHARACTERISTICS AND LOGGING INTERPRETING USED IN FEIXIANGUAN FORMATION IN THE TS-HNT AREA IN EASTERN SICHUAN BASIN

简述了川东TS-HNT地区飞仙关组鲕粒储层的地质特征及其储集性能,并介绍了鲕滩储层的测井响应特征。飞仙关组鲕滩储层以孔隙(洞)型为主,具有溶蚀孔洞发育、局部有少量裂缝、储层孔隙结构复杂等特点。准确的确定储层物性参数和岩性是测井解释评价的基础。通过对钻井取芯资料和测井资料的分析研究,对储层四性关系进行分析,建立了适合本区的储层参数测井解释模型,提高了储层物性参数的计算精度;针对研究区鲕滩碳酸盐岩储层孔隙结构复杂、孔渗关系变化多样的特点,以常规测井资料为基础,结合岩芯分析数据及试气投产资料,给出了储层综合测井解释成果,且测井解释结果与实际情况相一致。

This paper describes the geological characteristics and the reservoir properties of oolitic reservoir of Feixianguan formation in TS-HNT region of Eastern Sichuan, and introduced logging response characteristics of oolitic reservoir. The oolitic reservoir is mainly pore （vug）type. It develops corrosion pores and rugs and afew of fractures develops partially in it. And the pore structure of it is also complicated. Determining the properties parameters and lithology of reservoir accurately is the basis of well logging evaluation. This paper through the analysis of drilling core data and logging data, and analysis of reservoir＇ s four-property relationship, log interpretation model of reservoir parameters for this area is established, which improves the accuracy of the calculation of the reservoir properties parameters. In connection with complicated pore structure and diverse porosity and permeability relations of the oolitic shoal carbonate rock reservoir in the study area, based on the conventional logging data, and combined with core analysis data and the test gas production data, comprehen- sive reservoir well logging interpretation results are given in this paper with good application effect. And the log interpretation result is consistent with the actual situation.