This paper details the use of coiled tubing for spotting cement plugs without a workover rig present, during abandonments of 100 shallow, thermal wells in the South Belridge Field. This method decreased the cost of this portion of the abandonment operation by $2000 per well. The paper describes why multiple well abandonment programs are common in thermal fields. The requirements for effective abandonment in thermal fields are also covered. Workover rig and coiled tubing abandonment methods are discussed and compared. The methodology used for selection of an effective and less expensive thermal abandonment cement slurry is outlined. This paper shows that if operating, service company and regulatory agency personnel work together, the cost of abandoning wells can be substantially decreased without decreasing the effectiveness.

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