Syncline-confined-water model of coalbed methane enrichmentin Manasi mining area,Southern Junggar Coal-field
Received date: 2017-07-24
Revised date: 2017-10-03
Online published: 2017-12-10
Coalbed methane resources are rich in Manasi mining area of Southern Junggar Coal-field,but the enrichment rules of coalbed methane are complex because of complex structures,multi-layer seam,particulate hydrodynamic field.With analytical data of mining area,coal mine,oil and gas exploration,we study many factors which influence the enrichment of coalbed methane,such as coal rank,structural,sedimentary,hydrogeology.The results show that tectonic movement form Qingshuihe and Manasi syncline,swamp on plain control the growth of thick coal seam,sealing conditions which controlled by fan delta fluvial facies and lacustrine facies,the underground water dynamic system which controlled by burning area can hinder the dissipation of coalbed methane.The above factors control the enrichment and reservoir formation model of coalbed methane in the Mansi mining area.The research shows that south Manasi and Qingshuihe synclinal shafts which have higher coal rank,good mineralization of groundwater and good sealing condition are enrichment area of coalbed methane.
Han Xu,Tian Ji-jun,Feng Shuo,Zhang Yu-yao . Syncline-confined-water model of coalbed methane enrichmentin Manasi mining area,Southern Junggar Coal-field[J]. Natural Gas Geoscience, 2017 , 28(12) : 1891 -1897 . DOI: 10.11764/j.issn.1672-1926.2017.11.001
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