Initially, a single Well Tractor® provided the weight on bit (WOB) for the Well Miller®, and yielded positive milling results; however, in light of operational limitations and analysis of real-time data, Welltec® changed out the single Well Tractor® for tandem tractors on the subsequent run. The tandem tractors maximized WOB, increased the rate of penetration (ROP) for milling, and easily met the forecasted operational time.
Total milling time was 13 hours, with an average ROP of 15.38 mm/hr.
A subsequent slickline drift/depth determination encountered no problems when passing through the now enlarged restriction from the upper to lower completion.
The operation was completed in 36 hours, without the use of a rig. The operation enabled the client to immediately increase production.
Welltec’s simple but innovative solution eliminated the need for a workover rig, reducing the client’s cost and yielding the full value of their assets. Finally, the e-line solution reduced the complexity and hazard potential of the operation, thereby minimizing HSE risks.
WELL TYPE: OIL
MAX. TEMPERATURE: <120ºC