摘要
阿联酋地区天然气资源丰富,但是部分中生界气藏H_2S含量较高,影响气田的勘探开发。含H_2S气有多种成因,硫酸盐热化学还原反应是高含H_2S气藏主要成因,该反应需具备蒸发岩物质基础、充足烃类还原剂、较高地温和贫重金属储层保存等地质条件。根据阿联酋中生界气藏特征和具备的地质条件,对比分析认为:高含H_2S气藏是硫酸盐热化学还原反应形成的;Hith膏盐层作为该反应的主控因素,决定了高含H_2S气藏主要分布在阿联酋中西部地区的Arab组。
The United Arab Emirates in the Middle East is rich in natural gas resources,but part of the Mesozoic gas reservoirs are with high content of H2S,thus their exploration and development are influenced. There are a variety of the causes of generating hydrogen sulfide,the thermochemical sulfate reduction（TSR） reaction is generally considered as the main cause of the gas reservoirs with high H2S,the reaction requires four aspects of the geological conditions including the evaporate material basement,abundant hydrocarbon reducer,much higher geotemperature,poorer heavy-metal preservation and so on. According to the Mesozoic gas reservoir characteristics and exited geological conditions,the contrast and analysis show that the high-H2S gas reservoirs are formed by the thermochemical sulfate reduction reaction; Hith gypsum-salt bed is regarded as the main controlling factor of the reaction,and furthermore determines the distribution of the higher hydrogen sulfide gas reservoirs in Formation Arab of the middle and west of the UAE.
作者
柳万春
谢楠
张鑫
李运振
朱钇同
LIU Wanchun XIE Nan ZHANG Xin LI Yunzhen ZHU Yitong(CNOOC Research Institute, Beijing 100028, China)
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2017年第1期50-54,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家"十二五"重大专项课题"非洲
中东重点勘探区油气地质评价及关键技术研究"(2011ZX05030-003)
关键词
阿联酋
H2S
气藏
热化学还原反应
膏盐层
the United Arab Emirates
H2S
gas reservoir
thermochemical reduction reaction
gypsum-salt bed/rock
