Study On Optimization Of Coalbed Methane Drainage System Based On Time Series Analysis

China's coal-bed methane resources are abundant,and China's coal-bed methane reserves are the third largest in the world,with a total resources of 36.8 trillion m~3,which is equivalent to conventional natural gas reserves.Mining coalbed methane has important practical significance,which can not only improve the safety index of coal mine safety,but also protect workers'personal property.It also protects the environment and prevents its main component,methane,from being emitted directly into the air,creating a more serious greenhouse effect.It can also serve as an important support in the natural gas structure to provide gas source and guarantee the economic security of our country.The development of coalbed methane is a continuous process of drainage and depressurization.Different mining systems need to be developed for different coal seams in different stages.In the case of the success and failure of CBM development,the working system of unreasonable(too fast,too slow and discontinuous)directly determines the low yield of coal bed methane,or the proletariat.Now there is no universal coal seam gas extraction equipment selection and parameter adjustment method.From the development of coalbed methane,Chinese scholars have carried out a series of theoretical and experimental researches on its mining mechanism,reservoir damage and development benefit.Unreasonable high rank system essential knowledge(rank too fast,too slow,discontinuous phenomenon)adhere to the slow decompression,smooth straight row of mining,gas,rapid pump inspection principle,the control voltage controlled powder,constant pressure high rank as the core system of high rank.The coal seam gas drainage is divided into several stages(spray,test,stable drop surface,stable gas production and air volume attenuation).And the quantitative drainage system is a blank.With the continuous exploitation of coalbed methane in China,abundant data and experience are accumulated.Coalbed methane(CBM),China's largest company,blue flame of coalbed methane in Shanxi group co.,LTD.By 2013,accumulative total construction completed over 5000 CBM Wells on the ground,high rank well and more than 3300,and has a large number of geological data of Wells,high rank data,production data,etc.CBM geology and the equipment type and parameters selection of both can reflect a situation of coalbed methane production,at the data level,is the geological data+rank=production parameters,the equation for the development of coalbed methane is not only,also apply to the new mining coal-bed methane Wells,there is a relationship between two equations,we use the degree of similarity to indicate that the difference of two Wells,namely the two Wells contains a variety of factors overall cash out the degree of difference.By fuzzy matching guiding principles and hierarchical analysis,the weights of all factors are determined,and the similarity between old and new well is finally determined.After efficiency maximization model and the high rank periodic analysis,obtained the new producer should adopt working system,practice has proved that this idea is feasible,then introduced the big data related technologies to solve the problem to achieve high efficiency automation and intelligence,the result has a certain scientific.