Schlumberger

Product Sheet: DRILCO Advanced-Torque Double-Shouldered Drillpipe Connection

Date: 8/6/2014

The DRILCO ATDS advanced-torque double-shouldered connection improves drilling performance for small-diameter tubulars by providing greater torque capacity than standard API connections, making it ideal for use in aggressive drilling and fishing operations. Improved flow rates can be obtained by using a larger than standard bore in the tool joint.

The double-shouldered design enables the primary external shoulder to serve as the sealing surface, while the secondary shoulder serves as a mechanical stop for the connection. The ATDS pin and box sections are engineered to distribute the makeup forces between the two shoulders, providing additional torsional strength for high-torque applications.

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