Study on high efficient permeability improved technique of coal reservoir based on radial well technology

in order to have a high eficient permeability improved technique and fechnology of the cal reservir and to reach a target to obviouslyimprove the producion of the coalbed methane wel ased on a new radial ll echnogy.in igh efic ent combination with the hydrauli fracturing technology.the theoretical analysismethod was appied to a deep analysis and study on each factor affected to the fracturing and permeability improved efect of the radial welli nclucing the major crack dire ctionstratainclimaion rdal ell construction fechnogy and othersMeanwhile with the sie test an inspection was conducted on the practiaity of the radial well racturing echnolog;.T he resuts showed that based on the radial well technology.the high eficient permeability improved techology of the coalreservoir could increase thedlly production of the no gas producion wvl 、 5DD mn-3/d and the permeability coeficient of seam was increased by 3.55 times.Thus ,a new set high effi ent permeablity improved techniue of the coal reservoir was formed based on the radial wl echnolgy;.The nev technique could obviously improve the permeatilit ef c of he coal reservoir and could improve the production of the coalbed methane well.