Journal of Jilin University(Earth Science Edition) ›› 2016, Vol. 46 ›› Issue (2): 368-378.doi: 10.13278/j.cnki.jjuese.201602106

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Characteristics of Heavy Oil Hosted in Permian Lucaogou Formation Discovered in Bogeda Mountain of Zhunggar Basin and Its Importance for Further Exploration

Du Xiaodi, Li Feng, Qiu Haijun, Li Zhao, Xu Yinbo   

  1. Oil & Gas Survey, China Geological Survey, Beijing 100029, China
  • Received:2015-02-21 Published:2016-03-26
  • Supported by:

    Support by The Project of National Oil and Gas Resources Survey and Strategic Selections,Ministry of Land and Resources(1211302108019)

Abstract:

Permian Lucaogou Formation is one kind of the most important hydrocarbon source rocks and exploration targets in East Junggar basin. Heavy oil is discovered in Permian Lucaogou Formation in well JZK1, which was drilled in 2013 at the northern foot of Bogeda Mountain in Xinjiang by Oil & Gas Survey, China Geological Survey. According to the organic geochemical data of the heavy oil and core samples from JZK1 well, the heavy crude oil, which mainly exists in rock fissure, is in moderate evolution stage and experienced later biological degradation. Based on the correlation between oil and source rocks, the crude oil is from Lucaogou Formation itself. The result indicates that this is a kind of self-generated reservoir. Lucaogou Formation extends from Yamalike Mountain in Urumqi in the west to Baiyanggou in Qitai in the east, which covers an area about 20000 km2 with 136 km in length and 2-10 km in width. It is favorable exploration target in the near future in the region. According to the drilling and seismic interpretation results from seismic lines across wells, the strata above and below a nappe is predicted to be the two key exploration regions. The primary reservoir located in the lower wall of thrust anappe is buried deeply in a large scale, which is a significant target for future exploration.

Key words: Junggar basin, Bogeda Mountain, Lucaogou Formation, heavy oil, further exploration region

CLC Number: 

  • P618.13

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