Cano Petroleum Achieves Improved Recovery Rates at Nowata
Cano Petroleum, Inc. reports that extended laboratory testing to evaluate enhanced oil recovery (EOR) of its Nowata Field has yielded significantly increased recovery rates. Further testing of potential flood formulations has increased ASP (alkaline-surfactant-polymer) coreflood recovery to 24% of the original oil in place (OOIP), compared to the Phase III results of 18% of OOIP. While additional testing continues, construction of the ASP pilot area and facilities is underway at Nowata.
Jeff Johnson, Cano's Chairman and CEO, stated, "These improved results underscore the importance of conducting comprehensive tests in the lab before making a significant investment in the field. Compared to the field, experimentation in the lab is cheap, improves the potential for recovery success and reduces the financial risk. More importantly, the decision to extend the testing at Nowata beyond Phase III occurred as a result of the knowledge and field experience of our in-house engineering staff working effectively with the laboratory expertise of our consultants."
Surfactant-Polymer (SP) testing of core samples taken from Cano's Davenport Unit is currently underway. Initial results are expected to be available in the second calendar quarter of 2006. The Davenport field, located in Lincoln County, Okla., has produced approximately 22 million barrels through primary and secondary recovery of an estimated 58 million barrels of OOIP. Proved reserves are estimated at 484 Mboe with probable reserves (anticipated to be recovered through SP flooding) estimated at 10,527 Mboe.
Cano has acquired a number of leases in an undisclosed area in Texas which was the subject of a successful pilot polymer flood in the 1980s. As the Company is continuing to lease in this area, it is referred to here, and in previous communications, as the Putnam field. Cano intends to execute a pilot program in this area where a surfactant-polymer flood will be injected and then produced through a horizontal well bore. The latest in SP technology will be coupled with horizontal drilling techniques to most effectively exploit the benefits of both.
Johnson added, "We are very excited about ASP and SP flooding as part of our overall Enhanced Oil Recovery (EOR) business model. While these flooding technologies have already proven successful worldwide, further refinements in the technology and its applications are inevitable as their deployment becomes more widespread. Cano will remain aggressive in its strategy to acquire assets that are suitable for surfactant-polymer flooding and other EOR applications."
SP and ASP flooding are enhanced oil recovery techniques that can
be employed to recover additional oil over and above primary and
secondary recovery methods. Low concentrations of surfactants,
polymers and other additives are added to the waterflood operations
already in place, to "clean" stubborn or hard to reach oil from the
reservoir, much like soap in a greasy dish pan.