Enhanced Oil Recovery and Natural Gas Storage

IGC offers unique expertise in evaluating and designing development programs for enhanced oil recovery (EOR) in reservoirs and then converting the operation into a natural gas storage facility.

Numerous depleted oil and gas reservoirs exist that were produced in a different economic environment, leaving behind 50% or more of the recoverable oil. Abandoned reserves may occur due to the following:

• Lack of pressure maintenance in the reservoir during primary production

• Fractured or tight reservoirs that sweep oil from a limited portion of the field

• Pressure sink in the reservoir, abandoning fringe pockets of oil

• Well locations that ineffectively drain the reservoir

• Wellbore problems and formation damage that impede oil flow

IGC uses the geological and engineering data on the field to model the reservoir and determine the volume and productivity potential of the reservoir. Using an iterative process of simulating gas injections at various locations in the filed, IGC will recommend the optimum number and locations of wells needed to re-establish and maintain reservoir pressures in order to drain the remaining recoverable oil reserves. The simulation model will be used to generate monthly (and even daily) production volumes that can be exported for financial analysis to determine project rate of return.

IGC will also model the potential to convert the field, after oil blowdown, to gas storage. Injections and withdrawals of gas will be simulated to determine the maximum daily rates, the storage service duration at various gas flow rates and the volumes of storage capacity.