摘要
天然气与源岩对比的依据是源岩脱附气与其生成排出的天然气具有一致性或相似性,然而,对于脱离地下原始环境的源岩样品,采用物理方法脱附的吸附气和化学方法脱附的酸解气,与源岩排出的天然气不一定具有一致性或相似性。通过源岩脱附气轻烃对比实验认为,吸附气与酸解气轻烃特征不同,源岩吸附气应具有源岩生排出的天然气特征;利用低熟源岩热模拟排出气轻烃,分别与热模拟后源岩样品的吸附气和酸解气轻烃对比,源岩热模拟排出气与吸附气轻烃类似、与酸解气轻烃差异较大,源岩吸附气主要反映源岩排出天然气特征,气岩对比应采用源岩吸附气轻烃指标。
Correlation between natural gas and source rock can be made since the de-absorbed gas and the discharged gas are similar in certain extent. However, the physically de-absorbed gas or the chemically acid decomposed gas may not correspond with the discharged gas because source rock samples have been taken out of the original environment. Comparative experiments of light hydrocarbon have indicated that, different from the acid decomposed gas, the de-absorbed gas is similar with the discharged gas. As a result, light hydrocarbon parameters of the de-absorbed gas are chosen in gas-rock correlation.
出处
《石油实验地质》
CAS
CSCD
北大核心
2011年第4期424-427,436,共5页
Petroleum Geology & Experiment
基金
国家重点基础研究发展计划"973计划"(2009CB219308)部分成果
关键词
源岩
热模拟实验
排出气
吸附气
酸解气
轻烃
source rock
thermal simulation test
discharged gas
de-absorbed gas
acid decomposedgas
light hydrocarbon
