摘要
对取自东濮地区的地表土壤进行不同温度的热解和碳同位素实验,并引用了一口探井的井下化探测量数据。研究结果表明,土壤蚀变碳酸盐(△C)与油气垂直向上迁移没有直接关系,其成因可能是与油气藏形成有关的矿化水向上浸染所致。这种矿化水的作用造成地表土壤酸碱度的“蚀变”,从而指示地下油气藏的存在。
The surface soil sampled from Dongpu area is pyrolysed at different temperatures and isotopically analysed by C-isotopic method, and correlated with the underground geochem-ical measurements from an exploratory well. The results show that altered carbonate of soil(△C) does not directly related to vertically upward migration of hydrocardons, but to upward dissemination of mineralized water associated with the formation of hydrocarbon pools. Such a process is the cause for 'alteration' of pH value of soil , therefore it may indicate the existence of hydrocarbon accumulation.
出处
《石油实验地质》
CAS
CSCD
北大核心
1993年第3期304-308,共5页
Petroleum Geology & Experiment
