海洋地质前沿2026，Vol.42Issue(9)：89-99,11.DOI:10.16028/j.1009-2722.2025.192
深层低孔渗储层复杂流体识别与有效性快速评价研究及应用
Research and application of complex fluid identification and effectiveness rapid evaluation for deep low porosity and permeability reservoir:taking Huizhou 19-6 hundred-million-ton Oilfield in Pearl River Mouth Basin as an example
摘要
Abstract
With the continuous deepening of exploration work in the Pearl River Mouth Basin,the exploration to low porosity and permeability reservoirs has become the main battlefield for increasing oil and gas reserves and production.However,deep reservoirs are affected by factors such as complex lithology,poor physical properties,and diverse fluid types,resulting in a series of severe challenges in exploration operations,including difficulties in distinguishing critical hydrocarbon reservoirs,identifying low-contrast oil layers,and characterizing reservoir ef-fectiveness.Based on core,PVT analysis test data,FLAIR fluid logging,digital core and test data,using PVT ana-lytical data for calibration,the consistency of PVT data between surface gas logging and underground reservoir was clarified for the first time,and the WH and BH parameters of gas logging were optimized to build the identi-fication chart of condensate gas and light oil.In addition,using the calibration based on core oil-bearing data,we found that the contents of FLAIR"heavy hydrocarbon components"(C4,C5,C6,C7,C8)were positively correl-ated with reservoir oil-bearing property.Moreover,using sampling and test data for calibration,a low-contrast oil layer identification method of C4+C5 and C6+was constructed.Finally,the macro and micro evaluation paramet-ers of digital core were optimized via big-data analysis,and a new classification standard of reservoir effective-ness based on macro permeability of digital core,micro micron pore connectivity,and micron median pore throat radius was established.The field application showed that the accuracy of critical fluid,low contrast reservoir iden-tification,and reservoir effectiveness evaluation in Huizhou 19-6 hundred-million-ton Oilfield was more than 95%through multi-technology integration and complementary advantages of different data,which effectively guided and supported the rapid operation decision-making and operation plan formulation,greatly improve the efficiency of well site operation and reduce the operation cost.关键词
低孔渗储层/复杂流体/低对比度油层/储层有效性/快速评价Key words
low porosity and permeability reservoir/complex fluids/low contrast oil layer/reservoir effective-ness/rapid evaluation分类
海洋科学引用本文复制引用
熊亭,关利军,徐长敏,蒋钱涛,崔玉良,丁烽娟..深层低孔渗储层复杂流体识别与有效性快速评价研究及应用[J].海洋地质前沿,2026,42(9):89-99,11.基金项目
中海石油(中国)有限公司勘探三外项目"基于数字岩心的井筒渗透率连续构建及储层分类方法研究"(SCKY-2025-SZ-01) （中国）
