Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2022, Vol. 44 ›› Issue (2): 49-64.DOI: 10.11885/j.issn.1674-5086.2020.02.10.03

• GEOLOGY EXPLORATION • Previous Articles     Next Articles

The Comprehensive Logging Evaluation of "Three Qualities" of Tight Gas

YUAN Long1, ZHANG Haining1, XIN Yi2, HUANG Ruokun2, LIU Wei3   

  1. 1. Geological Research Institute, China National Logging Corporation, Xi'an, Shaanxi 710021, China;
    2. Research Institute of Petroleum Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
    3. Safety, Environmental Protection and Engineering Supervision Center, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
  • Received:2020-02-10 Published:2022-04-22

Abstract: In order to clarify the relationship between source-reservoir allocation of different layers and enrichment high-production area in the Jurassic tight gas of the Kuqa Depression in the Tarim Basin, we make full use of data of geology, core analysis and new logging technology, combined with the logging evaluation methods of the "three quality" factors of tight gas reservoirs, and comprehensively apply the tight reservoirs in the study area using the main control factors. The research shows that the reservoir quality, source rock quality and engineering quality of the high part of the Jurassic tight gas in the Kuqa Depression in the basin are significantly better than those in the east and west, and have a good relationship between source and reservoir; the quality types of source rocks are mainly class Ⅰ and Ⅱ; "three qualities" plays a decisive role in tight gas enrichment and high production. Comprehensive evaluation through close combination of logging, geology and engineering provides a reliable basis for the selection of favorable gas tight zones and fracturing layer selection.

Key words: Kuqa Depression, reservoir quality, hydrocarbon source rocks, source reservoir configuration, engineering quality

CLC Number: