物探与化探2024，Vol.48Issue(2)：348-355,8.DOI:10.11720/wtyht.2024.2158
多组分碳同位素录井在天然气勘探中的应用
Application of multi-component carbon isotope logging in natural gas exploration:A case study of the BD21 area,Qiongdongnan Basin
摘要
Abstract
This study aims to ascertain the accumulation characteristics of natural gas in the deep-water oil and gas fields in the Qiong-dongnan Basin.To this end,it performed continuous multi-component carbon isotope measurements for natural gas wells in the basin.Based on the comparative analysis of a continuous carbon isotope profile from a key well in the basin and the carbon isotope values from key intervals in surrounding wells,this study delved into the genetic types and sources of natural gas in the key well.The results show that dry gas occurs above the first member of the Sanya Formation,dominated by biogenic and secondary biogenic gases.In contrast,wet thermogenic gas exists below the second member of the formation,primarily including associated gas.Besides,natural gas in the BD21-1 block originates from two sources:Eocene high-maturity oil-formed gas and low-maturity gas with a special genesis from the Yacheng Formation.Overall,multi-component carbon isotope logging is effective in investigating the genetic types,sources,and matu-rity of natural gas.关键词
琼东南盆地/碳同位素录井/成因类型/崖城组Key words
Qiongdongnan Basin/carbon isotope log/genetic type/Yacheng Formation分类
能源科技引用本文复制引用
胡益涛,张焕旭,倪朋勃,郝为,瞿煜扬,校韩立..多组分碳同位素录井在天然气勘探中的应用[J].物探与化探,2024,48(2):348-355,8.基金项目
中国海洋石油集团公司重大专项课题"双孔介质储层测录井综合评价技术与作业方案优化研究"(YXKY-2021-ZJ-01) （YXKY-2021-ZJ-01）
