DuraSeal Coatings Company has tested its DS200 nanocoating successfully, confirming a 38% pressure-drop advantage for coated downhole tubing vs. uncoated tubing. All tests were conducted at the Southwest Research Institute flow-loop in San Antonio, Texas, USA. The test setup included a 30-ft-long pipe section of each tubular diameter, coated and uncoated, in a closed high-pressure-gas loop. Transmission-grade natural gas was used as a test medium, with pressure capability to 1,000 psig and flow rates ranging from 100 to 1,000 actual cf/min. Each tube was tested individually at a constant 1,000-psig upstream pressure at 70°F over a minimum of five distinct flow rates from 100 to 1,000 actual cf/min for 3½-in. tubing. Redundant gauges were used to ensure test accuracy and efficacy. The lower pressure drop translates into less pumping energy and higher flow rates, thus reducing costs for gas producers.
For additional information, visit www.durasealcoatings.com/oilandgas.
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