Study On Characteristics Of Coalbed Methane Reservoir In Baie Exploration

In the situation that traditional energy like coal and oil of the global shorterand shorter,all over the world have take more and more attention on thenew energy coalbed methane's development and utilization,coalbed methane'development theory and technology had followed to be gradually mature.The characteristic of coalbed methane reservoir is the theoretical premise and key of coalbed methane development.This paper mainly study on the characteristics of coalbed methane reservoir of Baie exploration area.lt based on coal exploration project of Baie exploration area and according to the recently published literatures of coalbed methane.It further analysis and research on gas content,permeability,porosity,several adsorption-desorption characteristics,pressure characteristics of coal reservoir.The result shows that the vitrinite content and porosity of coal reservoir high developed and it is conducive to the formation of coalbed methane.Besides that,the lithology of roof is compact and the geological structure is simple advantageous to enrichment and preservation of coalbed methane.But at the same time there are many unfavorable factors for exploitation of coalbed methane like low permeability,low critical desorption pressure and high stress.For all of above conditions we need to choose an evaluation index system and reasonable evaluation method to evaluate the recoverability.Although many of the mathematical method for comprehensive evaluation,But according to the admissibility of parameter characteristics of coalbed methane in the study area.This paper will use fuzzy mathematics method to complete the evaluation of coalbed methane resource in Baie exploration area.Use the fuzzy mathematics method we concluded that in Baie exploration area,the comprehensive score of coalbed methane recoverability is low.The score indicate that exploitation value and development potential of coalbed methane low.In the final analysis,the date shows that the coalbed methane of Baie is not suit exploited with large-scale and commercial in the present stage.