All machine shop services are provided by qualified DRILCO personnel. Highly trained and experienced machinists ensure that each job is done to API standards in your area for machine shop services.
Tubular repair services
Connection recuts are the most common type of tubular repair; we remove the minimum amount of material required to ensure a full repair. We are also licensed to recut proprietary connections from many other major manufacturers of tubular products. The most common cause of failure or damage of rotary-shouldered connections is insufficient torque applied during makeup. To reduce stress on the connection, an API stress-relief groove and bore back box can be machined, while fatigue life can be increased with cold-working. We also offer kemplating, the application of a phosphate coating that provides a barrier between the metallic surfaces of the pin and box.
Tool joint buildup is an industry-accepted procedure to extend the service life of drillpipe and Hevi-Wate transition drillpipe. Tool joints that meet minimum length and diameter criteria can be professionally restored to their original OD.
Stub-welding (stubbing) ends on drill collars and specialty tools
When drillstem members become too short through repeated reworking of connections, box-weak from OD wear, or pin-weak from ID wear, they can be put back into service by stub-welding new material to the ends of the worn tools and cost-effectively restoring the physical dimensions. This process is called stubbing.