World’s First Nipple Profile Removal on Wireline
Welltec® is the first company in the world to offer a solution for efficiently milling nipple profiles on electric wireline. This can be achieved by applying the Well Miller® NPR (Nipple Profile Removal) that offers a new bit design for the field proven Well Miller® system along with hydraulically provided weight on bit (WOB) by the Well Stroker®.
This innovative system offers operational efficiencies never seen before in conventional pipe-conveyed technologies, generating huge cost savings and value creation to operators worldwide. The main application for this solution is to increase the well internal diameter through nipple profiles to allow larger diameter intervention products to pass.
Avoid Killing Your Wells
This new system is the only one of its kind on the market. A major benefit of deploying the new milling system as opposed to the pipe-conveyed methods is avoiding the need for a well kill, which saves time and reduces possible formation damage. The milling system uses the well fluids to cool and lubricate the bit while cuttings are captured on magnets positioned above the bit. Since operations can be performed under live well conditions, the production can be returned quickly or further intervention operations can be performed on wireline.
HSE Benefits
The alternative to this system is far more costly and complicated. Using traditional methods involves a large footprint for pumping equipment and fluids handling and requires prolonged operating times, several heavy lifts, all of which results in complex logistics.
Field Experience
The world’s first nipple profile removal on wireline was performed in Indonesia, where an operator needed to remove multiple nipple profiles in order to deploy a larger OD straddle packer assembly. In 10 separate wells with 2 Super 13 Chrome nipples in each, Welltec® successfully enlarged with the nipples with two different bits for the Well Miller® NPR. The entire operation was performed in 11 and a half days at total costs less than half compared to an operation performed with traditional methods.
The milling system has also been successfully applied to remove restrictions caused by partial liner collapse or kinks within the completion string. In the North Sea, the Well Miller® NPR has been deployed to mill a partial tubing collapse, hich was achieved in only 6 hours.
For more information, please visit www.welltec.com