Following several surface tests of the Well Miller® combined with the Well Tractor®, several important modifications were fine-tuned and implemented. First, a customized bit was designed and manufactured. Then the amount of weight on bit (WOB) provided by the Well Tractor® was determined, tested and proven effective with the new bit during the first field trials.
During the first three field trials, a challenge was also encountered from the debris of previously milled balls which would ‘spin’ on the end of the bit between it and the next ball. To mitigate this, a Well Stroker® was incorporated into the tool string to provide an increased WOB, above and beyond what a tractor could provide.
With the new tool string configuration of Well Tractor® and Well Stroker® providing an optimized WOB, and the Well Miller® equipped with a new bit, the next eleven wells (each with 5 – 9 ball/baffle sleeves) were all successfully milled on e-line. This performance delivered an estimated 24 day gain in production
“Many congratulations to you and your team for the great job done on this well, whereby a total of 9 RSS balls & baffles were removed in a single run. I believe this is another World Record run, well done & keep striving for better.”
– Well Operations Manager.