储层沥青与有机包裹体生物标志物分析方法

A METHOD FOR BIOMARKER STUDY FROM RESERVOIR BITUMEN AND INCLUSIONS

秦胜飞 潘文庆 韩剑发 赵孟军

Qin Shengfei Pan Wenqing Han Jianfa Zhao Mengjun

中国石油勘探开发研究院, 北京, 100083 2. 中国石油塔里木油田分公司, 新疆, 库尔勒, 841000

Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China 2. Tarim Oilfield, PetroChina, Korla, Xinjiang 841000, China

储层沥青和包裹体生物标志物研究是目前油气地质学家十分感兴趣的课题,但由于提取这些生物标志物缺乏行之有效的方法,因此这方面的研究一直比较薄弱。文中选取塔里木盆地轮西稠油区碳酸盐岩储集层样品进行研究,用特殊的分析方法分离出储层沥青和包裹体生物标志物,并与原油生物标志物进行对比,建立了一种行之有效的储层沥青和包裹体生物标志物的分析方法,为油气成藏研究提供新的信息。通过对比研究发现,轮西地区的稠油饱和烃色谱基线漂移严重,含大量25-降霍烷,普遍具有生物降解现象;包裹体生物标志物却没有生物降解现象,说明包裹体和原油形成期次完全不同,包裹体形成在原油降解之前。

The study on biomarkers from bitumen and inclusion in reservoir has attracted many petroleum geologists.Since there is no good method to divide the biomarkers from bitumen and inclusions,this study has not been developed much up to present days.This paper selected carbonate reservoir samples from Lunxi thick oil area in the Tarim Basin.Some special methods have been tried to abstract biomar-kers from bitumen and inclusions,and then compared the biomarkers from thick oil.A set of effective method has been established to get biomarkers from bitumen and inclusions.The base line on saturated hydrocarbon chromatogram from thick oil waved seriously and contented abundant 25-norhopane, showing obvious biodegradation.However,the biomarkers from inclusion appear biodegradation phenomenon.This indicates that the forming time of inclusions is earlier than that of effective oil accumulation are different.

“十五”国家重点科技攻关项目(2001BA605A-06);中国石油天然气股份有限公司科技风险创新项目(10100026cq02)

https://doi.org/10.11781/sysydz200703315