Patent ID: 7452007

Claim:
An expandable threaded tubular connection comprising: a first tubular segment with a box member, the box member comprising interengageable threads that have load flanks and stab flanks of a constant pitch; and a second tubular segment with a pin member, the pin member comprising interengageable threads for engaging said box member, the interengageable threads of the pin member having a first thread segment and a second thread segment, the first and second thread segments comprising multiple turns of threads, wherein the first thread segment comprises load flanks and stab flanks of a first pitch, the first pitch being constant across the first thread segment, wherein the second thread segment comprises load flanks and stab flanks of a second pitch, the second pitch being constant across the second thread segment, the threads of the second thread segment having a reduced axial thickness relative to the threads of the first thread segment, wherein the first and second pitch is equal to the pitch of the threads of the box member, and wherein the load flanks of the first and second thread segments are fully engaged with the load flanks of the box member upon makeup of the connection.