ConocoPhillips hasn’t confirmed a specific cause behind a natural gas leak on the North Slope that started nearly a month ago, but the oil company said it drilled through an area it didn’t expect to contain significant amounts of gas.
of 300 personnel, alarmed residents in the nearby village of Nuiqsut, and halted oil production from the drill site.
The company did not install a layer of cement around the well as the well passed through the formation, ConocoPhillipsThat’s an important detail about what could have gone wrong, said Mark Myers, a petroleum geologist and former Alaska natural resources commissioner. ConocoPhillips cemented and sealed the well in deeper areas known to produce hydrocarbons, said Myers, who reviewed the well permitting documents.Asked Thursday if the lack of cementing caused the leak, Boys said the cause remains under investigation.
“Why did it happen if they drilled lots of holes very close there and they didn’t have any problems before?” Epstein said. Kimberly Maher, northern region manager for the department’s Prevention, Preparedness and Response Program, told a ConocoPhillips employee in a March 7 email, three days after the release was discovered, that the company was required to report the release to the conservation department.The uncontrolled release of a hazardous substance through the ground for multiple days is reportable to the agency, Maher said.
Despite the disagreement, ConocoPhillips provided a spill report to the conservation department after noon on March 8, Maher said in an in interview on Wednesday.
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