caa a22 4500 606225625 CHVBK 20210128101148.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10553-015-0558-0 doi (NATIONALLICENCE)springer-10.1007/s10553-015-0558-0 Gas Seepage Rule and Productivity Analysis in Designing Coalbed Methane Wells [Elektronische Daten] [Fei Liu, Zhifeng Luo, Zhengku Wang, Pingli Liu] Based on the characteristics of coalbed methane formations and the parallel-connection pipeline principle, we have formulated a model for calculating the pressure drop and the production of a horizontal multi-branch coalbed methane well. We have analyzed the effect of the number of side branches, the length and angle of intersection of the side branches with the main branch on the well productivity. The results show that with an increase in branch spacing, the productivity first decreases and then increases; with an increase in the angle of intersection and the length of the side branches, the productivity increases. Springer Science+Business Media New York, 2015 coalbed methane nationallicence seepage rule nationallicence pressure drop nationallicence well productivity nationallicence Liu Fei State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut Luo Zhifeng State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut Wang Zhengku Petroleum Engineering Department, ChongQing University of Science and Technology, 401331, Chongqing, China aut Liu Pingli State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 50/6(2015-01-01), 516-524 0009-3092 50:6<516 2015 50 10553 https://doi.org/10.1007/s10553-015-0558-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10553-015-0558-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Fei State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut NATIONALLICENCE 700 1- Luo Zhifeng State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut NATIONALLICENCE 700 1- Wang Zhengku Petroleum Engineering Department, ChongQing University of Science and Technology, 401331, Chongqing, China aut NATIONALLICENCE 700 1- Liu Pingli State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, 610500, Chengdu, China aut NATIONALLICENCE 773 0- Chemistry and Technology of Fuels and Oils Springer US; http://www.springer-ny.com 50/6(2015-01-01), 516-524 0009-3092 50:6<516 2015 50 10553