Title: GEOLOGICAL CHARACTERISTICS AND EXISTING PROBLEMS OF LARGE GAS FIELDS FOUND RECENTLY IN CHINA
Abstract: In the beginning of 21st century,natural gas exploration has been developing rapidly in China,with rapidly increasing of proven reserves and more and more newly found large gas fields,mainly located in 6 gas provinces,such as Ordos,Sichuan,Tarim,Qaidam,Songliao and Pearl River Mouth basins.The features of source rocks,reservoirs and traps of the large gas fields are summarized in this paper.It is concluded that the natural gas exploration in China has been developing from monism(oil type gas-generating) theory to plurality(oil-type,coal-derived and inorganic gas-generating) theories.The coal-derived gas becomes the major resource.Large gas fields can form at every stage of source rock evolution,and may distribute in clastic,carbonate and volcanic reservoirs with major in clastic reservoir and little in volcanic reservoir,and mainly structural-stratigraphic and minor structural traps.Based on the discussion of source rock,reservoir,and reservoiring,the 6 gas provinces are suggested to be main territories of natural gas exploration in the early 21st century in China.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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