测井技术2025，Vol.49Issue(2)：278-287,10.DOI:10.16489/j.issn.1004-1338.2025.02.015
基于多尺度缝洞参数的超深层碳酸盐岩储层有效性评价
Effectiveness Log Evaluation of Ultra-Deep Carbonate Reservoirs Based on Multi-Scale Fracture-Cave Parameter
摘要
Abstract
The ultra-deep carbonate reservoirs in member 2 of the Dengying formation in the Penglai gas area of the Sichuan basin exhibit lithological diversity,developed fractures and dissolution pores/caves,low matrix porosity,and strong heterogeneity.When evaluating reservoir effectiveness using single-scale fracture-cave parameters such as porosity and surface cavity ratio,mismatches often occur between actual test results and reservoir parameters.To address this issue,integrated analyses of core samples,conventional logging,electrical imaging logging,and array acoustic logging data are conducted to investigate controlling factors of reservoir effectiveness based on multi-scale fracture-cave parameters at borehole well and near-wellbore scales.After clarifying the controlling factors,the analytic hierarchy process(AHP)is employed to construct a reservoir quality factor integrating multi-scale fracture-cave parameters from borehole wall to near-wellbore domains,establishing a classification standard for reservoir evaluation in member 2 of the Dengying formation.Results demonstrate that effective reservoirs in the study area are primarily controlled by matrix porosity,surface cavity ratio,pore-cave connectivity index,and Stoneley wave energy attenuation coefficient.The classification standard based on reservoir quality factor and gas production per meter categorizes reservoirs into class I、Ⅱ、Ⅲ、IV,with class II and III reservoirs dominating in the target member 2 of Dengying formation.Verification through 11 tested intervals from 9 wells shows a 90.9%consistency rate in effective reservoir interpretation,providing reliable guidance for test zone selection in new wells within the study area.关键词
测井评价/多尺度/缝洞参数/超深层/碳酸盐岩/储层有效性Key words
log interpretation/multi-scale/fracture-cave parameter/ultra-deep layers/carbonate/reservoir effectiveness分类
天文与地球科学引用本文复制引用
殷榕,隋秀英,赖强,王茜瑜,吴煜宇,易红梅..基于多尺度缝洞参数的超深层碳酸盐岩储层有效性评价[J].测井技术,2025,49(2):278-287,10.基金项目
中国石油天然气集团有限公司重大科技专项基金项目"海相碳酸盐岩油气规模增储上产与勘探开发技术研究"(2023ZZ16) （2023ZZ16）
中国石油西南油气田公司科技项目"蓬莱气区灯影组成藏理论及勘探技术创新"(20220301-01) （20220301-01）
中国石油集团测井有限公司科技项目"万米深层测井解释评价方法研究"(CNLC2023-8B03) （CNLC2023-8B03）
