The recent process and developing tendency in CBM multi-branch horizontal well

CBM multi-branch horizontal well is applicable to coalbeds of the high rank CBM and mechanical property stabilization. The coalbeds should be appropriate thickness and depth, stable distribution and stable structure. The major advantage of CBM multi-branch horizontal well is high well-gas production rate, high recovery efficiency, short period of production and little floor area. The different geological conditions do correspond with the different type CBM multi-branch horizontal wells. There are different economic benefit and social benefit in the different type CBM multi-branch horizontal wells.