ERCB: Alberta frac job leak caused by insufficient spacing

12/24/2012
Insufficient distance between wellbores caused a vertical oil well to leak fluids after hydraulic fracturing of a nearby horizontal well last January in Red Deer County, Alta., an investigation by the Alberta Energy Resources Conservation Board has determined. In addition to allowing the horizontal wellbore to be closer than allowed by its own protocols, the operator, Midway Energy Ltd., didn't notify the vertical well's operator, Wild Stream Exploration Inc., about the frac job. If it had known about the operation, Wild Stream might have been able to prepare equipment for the pressure surge that occurred when its well came into communication with the fractured well, ERCB said. Partly bec...
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