Knobbe, Martens, Olson & Bear, LLP
Thermally expandable casing collar
A joint element connects casing sections of a casing string for transporting fluids and/or gases. The joint element includes a first longitudinal part arranged to be at least partly overlapping a second longitudinal part or a casing section. The first longitudinal part is connected with the second longitudinal part or with the casing sections in a mounted state with the first longitudinal part adapted to move axially relative to the second longitudinal part or the casing sections in an operative state. The joint element includes at least one shear member with a predefined shear value and the shear member is adapted to shear when an axial force exceeding the total shear value of the shear member is exerted, allowing a relative axial movement between the first longitudinal part and the second longitudinal part or the casing sections.
VANGUARD OIL TOOLS & SERVICES LLC
E E
E21B E21B
inventional inventional
Borre Len Mats
Loviknes Barton Johansson