.... coal seam gas CBM production basin China coalbed methane cbm basin water rate hydraulic fracturing Upstream Oil & Gas Qinshui Basin rod pump Drilling gas rate San Juan basin Zhang permeability coal bed methane complex reservoir ordos basin CBM Well CBM development Australia...

...). The results are neededmore survey seismic and massive drilling well, which the needs of study and evaluation to get more comprehensive calculation on gas methane reserves and the strategy of Exploration and Development phase on each basin The success ratio by numbers of drilling operation of CBM wells...

... Abstract During primary cementing of coalbed methane (CBM) wells, it is necessary to consider slurry designs not typically encountered during conventional cementing operations. An important difference between coal seams and conventional reservoirs is the cleat system of coal. This unique...

... Abstract For coalbed methane (CBM) wells with rising gas production, time to reach peak of gas production and peak gas rate are two fundamental features of a production profile. This paper investigates the time of occurrence of peak of gas production in CBM wells using production data analysis...

... of the main effects of stress dependent permeability is a magnification of the effect of mechanical skin from formation damage and the origin of high total skin in CBM wells is attributed to this mechanism. Gas block due to the pressure falling below the critical desorption pressure is also a problem...

.... Increasing dewatering of CBM well will be followed by increasing gas production. Preliminary production potential analysis can be obtained from the comparation of log data to the existing CBM field production. Coal thickness and spontaneous potential (SP) response from data log are used to calculate...