EFFECTIVE STIMULATION OF LOW-PERMEABILITY GAS WELLS IN WESTERN CANADA

Rapidly increasing demand for natural gas and recent price incentives have created renewed interest in the recovery of this product from marginal and previously noncommercial reservoirs as well as obtaining better productivity from all gas reservoirs. Many of the low-permeability gas sands of Western Canada could become more attractive investments if successful and efficient stimulation could provide profitable rates of return. This paper discusses the approach taken to evaluate the different low-permeability formations as to the type of frac or acid stimulation to use, the new fluids developed specifically for this type of problem and field stimulation results for the different fluids used.