As an example, presently, 90% of all of Oklahoma’s wells are marginal wells, in that they produce less than 10 barrels of oil per day. Fields that are candidates for chemical flooding are typically comprised of marginal wells. If a candidate field was waterflooded, much of the infrastructure needed for a chemical flood will already be in place. Currently marginal wells are being abandoned at a rate of 750 to 1000 wells per year in Oklahoma. Once a field has been abandoned, an EOR project becomes much more difficult and prohibitively expensive to implement, meaning loss of potential reserves.
As another example, according to “Oklahoma – The Ultimate Oil Opportunity” by Dan T. Boyd, the original oil in place underneath Oklahoma lands was 84 billion barrels of oil (BBO). The Oklahoma Corporation Commission stated in the 2008 Report on Oil & Natural Gas Activity that 14.78 BBO has been produced, with remaining reserves at 0.53 BBO (US Department of Energy). This leaves over 68.7 BBO of “trapped” oil. The goal of Enhanced Oil Recovery is to capture a percentage of that remaining “trapped” oil.
Why Surfactant EOR?
Surfactant Enhanced Oil Recovery Projects can utilize existing waterflood infrastructure, making it optimal for companies who already use water to produce trapped oil. CFT plans to use single well tests to demonstrate field level feasibility. Different formulations can be tested to find the right surfactant formula for optimum economic recovery. Surfactants are not limited by depth or pressure and typically have no environmental issues, as they are already being used in many oilfield applications, such as production chemicals, stimulation fluids and in environmental remediation projects.
We will evaluate candidate reservoirs for surfactant EOR using characterization studies of rock and fluid properties, OOIP, recovery and current saturations, laboratory testing of surfactant formulations, and preparing screening reports. Field pilot projects will typically include a chemical tracer program such as an interwell tracer tests or single well tracer tests, a injectivity tests, and design and implementation of a pilot program. CFT will provide field testing of surfactant EOR technology: from selecting the optimal surfactant formulation to designing the facilities and pattern for injection. In the field, from pilot to full-field development, CFT will be able to construct such facilities and train operation teams for implementation and operations.
If you have a mature oil field property, we would be happy to assist you in evaluating the potential for an EOR chemical flood project. Contact us today to get started.