藏北伦坡拉盆地藏1井原油地球化学特征

GEOCHEMICAL PROPERTIES OF CRUDE OIL IN ZANG 1 WELL, LUPOLA BASIN, NORTHERN TIBET

卢亚平 邵志兵 白森舒

Lu Yaping Shao Zhibing Bai Senshu

地矿部中南石油地质局油气勘探开发研究院, 长沙 410117 2. 地矿部石油地质中心实验室, 无锡 214151

Institute of Petroleum Exploration and Development, Zhongnan Bureau of Petroleum Geology, MGMR, Changsha 410117 2. Central Laboratory of Petroleum Geology, MGMR, Wuxi 214151

藏1井是伦坡拉盆地首次获得工业油气突破的钻井,原油的地球化学特征研究表明原油主要是常规的高腊低硫的原油,化学类型为芳香中间型,原油的母质类型主要是腐泥─腐殖腐泥型,藻类和高等植物是成油的原始母质,源岩的沉积环境为咸水湖盆;原油的成熟演化阶段基本处于低熟─成熟阶段;原油的后生变化主要是水洗和氧化,而生物降解作用相对微弱。

Zang 1 Well is the well where the first commercial oil and gas discovery in Lupola basin was located.Geochemical study shows that its crude oil is essentially conventional oil characteristic of high wax and low sulfur;chemically it is classified as intermediate aromatics;and its source materials include alga and higher plants,ranging from sapropelic to humic-sapropelic types;its orlginal depositional environment is salt lake basin- Basically the evolution of crude oil reaches to low-mature stages;and waterwashing and oxidation with a relative weak biodegradation are considered as the main epigeneses.

"八五"地矿部中南石油地质局科技项目(85－01－10)课题部分研究成果

https://doi.org/10.11781/sysydz199704377