岩芯逐次洗提仪研究砂岩油气成藏的原理与方法:以 TZ11井志留系沥青砂岩为例

恢复勘探区油气成藏史对于加快勘探步伐有着至关重要的意义,现有研究方法种类多样并各有其优势与不足,而基于岩芯洗提手段研究油气成藏史的仪器较少.本文阐述了一种新的思路,基于此思路组装的实验仪器能够以与原油充注相反的顺序逐次洗提出岩芯中充注的原油;然后开展后期的地球化学分析,能够更加真实准确地模拟油气成藏史,从而对油气的勘探与开发提供重要信息和依据

Principle and method of sequential core extraction system for studying hydrocarbon accumulation in sandstone:A case study of Silurian bituminous sandstone from Well TZ11

It is extremely significant for accelerating the development of oil and gas exploration to reconstruct the oil and gas accumulation history of exploration area.At present,there are various methods and each of them has its own advantages and disadvantages as well.However,the apparatus based on core extraction is seldom used in the investigation of oil and gas accumulation history.This paper puts forward a new method of characterizing the composition of hydrocarbons obtained from reservoir rock samples.Based on this method,a novel apparatus is assembled and used to sequentially extract residual oils in the reverse order of petroleum charge.Furthermore,more information can be obtained from organic geochemical analyses of the extracts to accurately reconstruct the oil and gas accumulation history and provide important evidences for the oil and gas exploration.