摘要
研究无机成因CO2气藏的成藏条件,对预测CO2气藏有着重要的意义。为此,通过综合分析济阳坳陷中部地区已发现的6个无机成因CO2气藏的生、运、储、盖及圈闭等条件,得出以下认识:幔源岩浆活动为CO2气藏的形成提供了充足的气源;断裂是CO2运移的主要通道;广泛发育的碳酸盐岩和碎屑岩是CO2气藏的主要储层;泥岩和致密砂砾岩是CO2气藏良好的盖层;再加上多种类型的圈闭组合,共同构成了CO2气藏成藏的有利条件。同时,还发现深部来的超临界状态CO2在运移成藏过程中与烃类油气存在着一定的相互作用。
Study on conditions of abiogenetic CO2 gas reservoiring is of great significance for prediction of CO2 gas pools.Various reservoiring conditions,such as generation,migration,accumulation,sealing and trapping,of 6 abiogenetic CO2 gas pools discovered in the central Jiyang depression are analyzed and the following understandings are achieved:the mantle-derived magmalic activities provided an abundant gas source;faults acted as the main pathways for migration of CO2 the extensive carbonates and clastic rocks were the main reservoirs;mudstone and tight glutentite acted as good seals;and various types of trap combinations occurred.All these favorable conditions contributed to the formation of CO2 gas pools.Moreover,the supercritical state CO2 sourced from deep of the Earth interacted with the hydrocarbons in the process of migration and accumulation.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2007年第10期6-8,共3页
Natural Gas Industry
基金
中石化"十五"重点项目"胜利山东探区CO2气资源勘探综合研究"(编号:P02066)的资助
关键词
济阳坳陷
二氧化碳
气藏形成
成藏机理
生储盖条件
圈闭
Jiyang depression,carbon dioxide,formation of gas pool,mechanism of reservoiring,conditions of source-reservoir-cap rocks,trap
