Technical Analysis on Radial Horizontal Well for Development of Coalbed Methane of Low Coal Rank

• 责任者：Xian Baoan (China University of Geosciences ; Beijing 100083 ; China) ; Xia Bairu
• 刊名：Coal Geology & Exploration
• 出版年：2010
• 卷期：38(4)
• 关键词：煤层气 ; coalbed gas ; 水平井 ; horizontal wells
• 页码：p.25-29
• 图表：5 illus., 7 refs.
• 分类号：2000
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

A new method to improve the production of low rank coalbed methane is put forward, in which radial horizontal well is drilled earlier than hydraulic fracturing. The aim is to expand and communicate more endogenic fissures in coal seam by the radial horizontal well drilled in advance and then enhance gas production.  According to the coal seam conditions of Fuxin Liujia block and Hunchun Basin, feasibility of joint application of radial horizontal well and hydraulic fracturing is studied. It is proposed to optimize well deployment method, jointly implement underbalanced drilling and jetting with flushing. It can play their different dominant roles and develop to an incorporate coalbed methane development technology.