1887

Abstract

Coalbed Methane (CBM) is an unconventional energy resource that has become an important source of energy in many countries. Highly varying porosity and permeability affect the production of gas from these reservoirs and a detailed study of the change in production rate and capacity is required for identifying and predicting the expected production of these reservoirs in the future. In this paper, the effect of various petro-physical parameters like porosity and permeability on CBM production has been estimated by considering a real world dataset. The changes in the gas production rate with time have been illustrated considering a range of reservoir parameters. It has been found that the change in permeability with constant porosity greatly affects the production rates with permeability being directly proportional to the rate of gas production. The change in porosity with constant permeability also affects the production of the gas by reducing the production rate with increased porosity since the higher amount of water in the pores now hinders the flow rate of the adsorbed gas. The increasing porosity also delays the production rate to achieve its maximum value as the water in the pores must be released before the gas can be produced.

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/content/papers/10.3997/2214-4609.20148916
2012-06-04
2024-03-28
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