The following spills were reported to the Colorado Oil and Gas Conservation Commission in the past two weeks.
Information is based on Form 19, which operators must fill out detailing the leakage/spill events. Any spill release that may impact waters of the state must be reported as soon as practical. Spills and leaks typically are found during routine maintenance on existing wells, though some actual “spills” do occur among the 18,000-plus wells in the county.
» DCP OPERATING COMPANY LP reported Dec. 31 a recent gas compressor station spill about 4 miles northeast of Weld County roads 20 and 59, in Keenesburg. Less than 1 barrel of condensate spilled. The spill was caused by overflow of a secondary containment due to an open valve that was inadvertently left unattended overnight. A vacuum truck was dispatched to the site within the same day, and additional investigation to define the extent of the impacts will be completed as soon as possible.
» NOBLE ENERGY INC reported Dec. 30 a historical flowline system spill near Weld 34 and 53, about 7 miles north of Keenesburg. An unknown amount of oil, condensate and produced water spilled. Lab analysis indicated the release at a decommissioned flowline. One soil sample exceeded COGCC standards for benz(a)anthracene and naphthalene.
» PDC ENERGY INC reported Dec. 30 a historical well spill near Weld 62 1/2 and 55, about 3 miles north of Kersey. An unknown amount of oil spilled. The operator discovered the release during abandonment. Groundwater is in contact with suspected impacted soil, and recovery efforts are mitigating impacts.
» NOBLE ENERGY INC reported Dec. 28 a historical well spill near Weld 48 and 59, about 4 miles southeast of Kersey. An unknown amount of oil, condensate and produced water spilled. Lab analysis indicated the release at a decommissioned wellhead. Three soil samples exceeded COGCC standards for total petroleum hydrocarbons, and one sample exceeded for 1-methylnaphthalene.
» FUNDARE RESOURCES OPERATING COMPANY LLC reported Dec. 29 a recent well spill near Weld 110 and 113, about 7 miles northeast of Keota. About 1 barrel of oil spilled. The oil was discovered around the wellhead. The cause is being determined. A vac truck was dispatched for cleanup, and soil samples will be collected.
» CRESTONE PEAK RESOURCES OPERATING LLC reported Dec. 28 a historical well spill near Weld 40 and 43, about 4 miles southeast of LaSalle. An unknown amount of oil, condensate and produced water spilled. Suspected legacy soil impacts were found during wellhead decommissioning. The release became state reportable due to the volume of impacted soils excavated. Vertical and horizontal definition is being pursued, and samples were submitted for lab analysis.
» CRESTONE PEAK RESOURCES OPERATING LLC reported Dec. 28 a recent spill near Nancy Avenue and Patrick Street, in Aristocrat Ranchettes. About 3 gallons of oil spilled. A broken oil site glass was found inside the test separator house during routine maintenance and inspection. The oil spilled inside unlined secondary containment. Site glass valves have been shut-in, and the separator will be drained.
» CRESTONE PEAK RESOURCES OPERATING LLC reported Dec. 28 a recent tank battery spill near Weld 28 and 21 1/2, about 2 miles southwest of Platteville. An unknown amount of produced water spilled. An underground leak from the water leg of the subsurface produced water vessel was detected. The water leg was isolated at the separator, and the produced water vessel was emptied.
» NOBLE ENERGY INC reported Dec. 28 a historical tank battery spill near Rancher Drive and Weld 23, in Milliken. An unknown amount of oil, condensate and produced water spilled. Lab analysis indicated the release at the tank battery. A soil sample exceeded COGCC standards for 1-methylnaphthalene.