Conveyance Well Tractor® NG Completes 80 Miles On One Job

Conveyance Well Tractor® NG completes 80 miles on one job

  • Max. temperature
    219°F
  • Max. deviation
    96°
  • Max. dog leg
    16,854 ft
  • Max. BHP
    355 bar

Background

A major intervention campaign was planned on Oseberg B in the North Sea to improve production from a well that was suffering from scale issues.

The final objective was to re-perforate existing zones and to add new ones. Oseberg B is notorious for its limited rig up height of only 41 ft, adding complexity to all operations.

For many intervention solutions this reduced tool length requirement would be a show stopper but not for the short Well Tractor Next Generation (NG).

Operation

Following a successful e-line, scale milling operation performed with the Well Miller®, the Well Tractor NG conveyed third party perforating guns for 17 runs in hole.

Over the course of the operation, the Well Tractor NG performed a total of 21 flawless runs, setting a new world record by tractoring a total distance of 423,723 ft (129,150 m) in one trip to the well site.

Also impressive for this operation was the average tractoring speed of 3,720 ft/hr (1,134 m/hr).

Achievements

The world record for tractoring in a single well was effectively beaten. The former record was “only” 282,110 ft (85,987m), which the Well Tractor NG surpassed by 141,614 ft (43,164m); a full 50% further. This world record was accomplished in a highly deviated well with trouble free operations.

Performing the entire intervention campaign on e-line proved to be both safer and more efficient as very long distances were tractored quickly and with no misruns.

Tools applied

  • Well Tractor®

    The Well Tractor was regarded as a revolution in the industry when it was introduced in the 1990’s. It enables operators to extend the reach of traditional e-line deployment into highly deviated and horizontal wells.

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  • Welltec Release Device®

    Welltec Release Device (WRD®) is a simple tool which adds versatility and risk reduction to the operation. It provides predetermined locations in the toolstring where it can be parted, should it become stuck.

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