Xinjiang Petroleum Geology ›› 2021, Vol. 42 ›› Issue (3): 312-318.doi: 10.7657/XJPG20210307

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Petroleum Exploration History and Enlightenment of Yanchang Exploration Area in Ordos Basin

HU Chunqiao1(), REN Laiyi1(), HE Yonghong1, WAN Yongping2, LIANG Quansheng1   

  1. 1. Research Institute, Yanchang Petroleum (Group) Co., Ltd, Xi’an, Shaanxi 710075, China
    2. Yanchang Petroleum (Group) Co., Ltd, Xi’an, Shaanxi 710075, China
  • Received:2020-12-15 Revised:2020-12-31 Online:2021-06-01 Published:2021-05-27
  • Contact: REN Laiyi E-mail:hcqenidyang@126.com;2395173521@qq.com

Abstract:

During the 100-year history of oil and gas exploration in Yanchang exploration area of Ordos basin, a number of major progress and breakthroughs have been made, all of which are of great significance. After analyzing the exploration history, data and important historical events, and based on the variations of oil and gas production and the development of geological theory in Yanchang exploration area, the exploration process is divided into four stages: Early exploration stage (1905-1949), sustained exploration stage (1950-1981), rapid development stage (1982-2006) and stabilizing oil production meanwhile increasing gas production stage (2007-). Additionally, this paper summarizes the theories and understandings in exploring ultra-low-extra-low permeability reservoirs, tight gas and continental shale gas in the southeastern area of the Ordos basin in recent ten years, and analyzes their important roles in the rapid increase of oil and gas reserves and production. Our findings may provide implications and references for future oil and gas exploration.

Key words: Ordos basin, Yanchang exploration area, exploration history, exploration enlightenment, tight oil reservoir, continental shale gas, Yanchang formation, ultra-low-extra-low permeability reservoir

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