莺歌海盆地LD8-1构造古压力热动力学模拟  

A thermodynamic modeling of paleopressures in LD8-1 structure, Yinggehai basin

作　　者：高秋丽[1] 陈红汉[1] 

机构地区：[1]中国地质大学(武汉)

出　　处：《中国海上油气（工程）》2005年第2期84-88,共5页China Offshore Oil and Gas

基　　金：国家"863"项目"海洋非烃气(CO2)资源的判别技术(No.2002AA615040)"资助。

摘　　要：莺歌海盆地LD81构造流体包裹体资料分析结果表明,该构造发生过6期热流体活动,其中有2期为天然气充注,分别对应第2期和第3期热流体活动。依据流体包裹体流体成分、气液比及均一温度,运用PVT热动力学模拟软件(VTFLINC)模拟得到该构造天然气充注时期的古流体压力;结合地层测试资料对LD81构造天然气成藏条件进行了分析。Based on an analysis of fluid inclusion data, it is indicated that there are six stages of thermal fluid activity in LD81 structure, Yinggehai basin, of which stage 2 and 3 are characterized by gas charging. According to fluid composition, homogenization temperature and gas-fluid ratio of fluid inclusions, the paleopressures in the two gas-charging stages can be modeled by employing a PVT thermodynamic simulator (VTFLINC). In combination with formation testing data, the gas accumulation conditions are analyzed in LD8-1 structure.

关 键 词：莺歌海盆地 动力学模拟 构造 古压力 流体包裹体 热流体活动 地层测试资料 天然气 分析结果 流体成分 均一温度 流体压力 模拟软件 热动力学 成藏条件 气液比 PVT 充注 

分 类 号：P618.13[天文地球—矿床学] TQ028.32[天文地球—地质学]