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- W2374954585 abstract "The dewatering characteristics and production law of coal bed methane in southern Qinshui basin with the geological analysis,dynamic analysis and numerical simulation methods,and analyzing the main control factors of production capacity comprehensively,and puts forward some suggestions on production increase are analyzed and summarized. Results show that in Southern Qinshui Basin,coal-bed has strong heterogeneity,gas and water production has large difference in plane,vertical wells' gas breakthrough time is 1 to 9 months,reaches peak rate of gas takes 6 to 18 months. In the area where drainage area is overlapping,medium and high production gas well has a long stable production period; gas content,permeability,tectonic position,artificial multiple-fractures and dewatering control method affect coal bed methane capacity significantly. In the advantageous position for development should put non-uniform well spacing,achieving drainage area overlapping; choosing fracture method should be based on the natural fracture development situation. In the area which natural fractures are well developed,the fracturing size should be increased to form larger scale fracture network. In the area which natural fractures are not developed,the method of control multiple-fractures should be taken,giving priority to increase the main fracture length and width. Dewatering should be continuous,drop speed of dynamic liquid level should be less than 5 m / d,and gas release rate should be controlled well after gas breakthrough." @default.
- W2374954585 created "2016-06-24" @default.
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- W2374954585 date "2013-01-01" @default.
- W2374954585 modified "2023-09-24" @default.
- W2374954585 title "Coalbed Methane Deliverability Characteristic and Its Controlling Factors in Southern Qinshui Basin" @default.
- W2374954585 hasPublicationYear "2013" @default.
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