Schlumberger Technology Corporation

Brian John Bethscheider

David Merlau

Quangen Du

Marius Smarandache

Michael Joseph Gratzinger

Gareth Yen Ket Chin

A sealing device for sealing an interface between a first surface and a second surface includes a primary sealing element for forming a primary seal at the interface and a carrier body that is slidable with respect to the interface to engage the primary sealing element. A carrier sealing element is positioned on the carrier body, and is configured to seal the interface with a secondary seal. The carrier body is slidable to engage the primary sealing element based on the secondary seal sealing the interface.

Sealing device

A technique facilitates temporary locking of a mechanical packer to prevent inadvertent actuation of the mechanical packer. The mechanical packer may be set via manipulation of a setting mandrel which works in cooperation with a releasable locking mechanism. The releasable locking mechanism may be initially locked against the setting mandrel and held in place via a piston, e.g. an annular piston, received in a piston chamber, e.g. an annular chamber surrounding the setting mandrel. The piston may be selectively shifted via pressure applied in the piston chamber so as to release the releasable locking mechanism, thus enabling actuation of the mechanical packer.

Packer system having lockable mechanism

Embodiments may generally take the form of a safety joint and methods related thereto. One embodiment may take the form of a safety joint deployable in a well. The safety joint includes a first sub and a second sub coupled to the first sub. The coupling of the two subs may include a first set of threads having a first orientation and a second set of threads having a second orientation different from the first set of threads. The first sub is decoupleable from the second sub upon disengagement of the first set of threads by rotation in a first direction followed by disengagement of the second set of threads by rotation in a direction opposite from the first direction.

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Alvin, TX, United States of America

Brian John Bethscheider