Oil & Gas Geology ›› 2000, Vol. 21 ›› Issue (1): 11-14.doi: 10.11743/ogg20000103

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THINKING FOR RESEARCHES AND OIL-GAS ASSESSMENT OF REFORMED BASINS

Liu Chiyang, Yang Xingke   

  1. Department of Geology, Northwest University, Xi'an, Shaanxi
  • Received:2000-02-14 Online:2000-03-25 Published:2012-01-16

Abstract:

Reformed basins that are widely and numerously found in China are the main replacing areas for China's oil and gas exploration.Oil and gas generation,accumulation,migration,pool-forming and distribution in the reformed basins were controlled by both the tectonic framework of pre-basin stage and the tectonic movements and structural forms of post-basin stage.So oil and gas pool-forming processes were complicated and oil-gas distribution regularity was varied.The process or thinking for the researches and oil-gas assessment of the reformed basins includes:1.collating the attribution of the basin and analysing its dynamic circumstances;2.reverting to the original basin;3.revealing the reformation process of the basin;4.determining the reformation degree and classifying the basin's retention units;5.approaching the characteristics of oil and gas accumulation and dispersion,assessing resources amount;6.taking multi-source hydrocarbon into account;7.paying more attention to late-stage pool-forming;8.paying attention to differential reformation.

Key words: reformed basin, research thinking, basin reconstruction, reformation process, retention unit, late-stage pool-forming, oil-gas assessment, Chinese sedimentary basin

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