OSPMICROCHECK.COM | INFO@OSPMICROCHECK.COM CASE STUDY 2K7 WATER SOLUBLE PAKS REDUCE BACTERIAL LOAD IN COILED TUBING FLUID IN THE EAGLE FORD Mitigation of premature string failures due to microbial influenced corrosion background Coiled tubing (CT) is used for a variety of operations in oil and gas wells, including mill out of bridge plugs after cemented liner plug-and-perf stimulation. With each trip in or out of the wellbore, the CT string incurs a certain amount of fatigue that can be estimated using simulation software based on the CT outside diameter (OD) and material grade. CT units are retired at 80% of predicted fatigue. CT manufacturers have increasing empirical evidence showing that CT units experience premature string failures (below 80% fatigue) in certain

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