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- Title
“十一五”以来中国天然气重大地质理论进展 与勘探新发现.
- Authors
魏国齐; 李剑; 杨威; 谢增业; 董才源; 佘源琦; 马卫
- Abstract
The progress of Chinese natural gas geological theory and new exploration discovery complement each other. Since the Eleventh Five-year plan, China natural gas geological theory has made great progress which can be concluded as the following seven aspects. There are two aspects of basic geological theory progress:(1)The formation mechanism of three types of natural gas, which are high evolution coal source rock, crude oil cracking gas and biogas, has been deepened to form coal source rocks cracking hydrocarbon-generation process mode, whole hydrocarbon-generation process of sapropelic source rock, and continuous biogas generation mode;(2)Natural gas origin identification theory of many types are furtherly improved including oil cracking gas and kerogen cracking gas, aggregated oil cracking gas and dispersed oil cracking gas, organic gas and inorganic gas, coal-formed gas and oil-formed gas. Five aspects of giant gas accumulation theory are deeply researched:(1)Innovation of old carbonate"five ancient factors controlling reservoir"accumulation theory is founded;(2)The theory of tight sandstone gas accumulation in craton basin, foreland basin and rift basin is developed and deepened;(3)An accumulation mode of "three micro carrier, near source enrichment and sustained preservation" is established;(4)Hydrocarbon accumulation theory of volcanic gas reservoirs in faulted basins with hydrocarbon-generated fractured trenches as the basic unit is improved;(5)The theory of high temperature and over pressure natural gas accumulation and deep sea natural gas accumulation in South China Sea is deepened. Development of natural gas geology theory promotes many big exploration discoveries. Innovation of old carbonate accumulation theory leads to the exploration of Chinese largest gas field of single formation which is Anyue Gas Field in Sichuan Basin;Innovation of accumulation theory in the foreland thrust belt brings about the first ultra-deep Chinese trillion cubic meters gas field in Kuqa Gas Field;Accumulation mode of super deep reef beach gas reservoir guides the exploration of Yuanba Gas Field which is the deepest buried reef gas field in China; The natural gas accumulation theory in South China Sea promotes the great discovery of Dongfang 13-2 Gas Field which is the biggest gas field in China waters and Lingshui 17-2 largest gas field in deep water.
- Publication
Natural Gas Geoscience, 2018, Vol 29, Issue 12, p1691
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672-1926.2018.10.012