Menu
The objective of this study was to assess pit water collected from various operators in the greater Permian basin for the presence of potentially problematic microbes that could result in a souring or MIC threat. Given the large assortment of waters from this region, the identification of trends between these waters and the microbial communities was the focus.
A CT service company, Pioneer Energy Services, working for an operator in the volatile oil window of the Eagle Ford formation was experiencing premature coiled tubing string failures. Recent conference paper presentations have pointed to microbial influenced corrosion (MIC) as a cause of premature CT failure1,2,3.
Third party analysis indicated that these CT string failures manifested in the form of pinholes and corrosion, primarily at the bias weld. The filler material used in bias welds has different mechanical properties than the base pipe material, making it weaker and more prone to fatigue. To determine the mechanism of failure, CT string and fluid samples from four of the seven units were further analyzed.
Have a water or microbial problem?
CANADA HEAD OFFICE
#6, 820 28 ST NE
CALGARY, AB T2A 6R3
+1 403-291-1658
USA HEAD OFFICE
#190, 16223 PARK ROW
HOUSTON, TX 77084
+1 281-497-2692