Nabors Drilling Technologies Usa, Inc.

Sercel Inc.

Nabors International, Inc.

Gary W Craig

Padira Reddy

Sean M Bailey

Louis W Erath

John Luscombe

Mike Maples

Randy E Scott

James Spackman

A gate assembly that can include a frame with first and second mounts to mount the gate assembly across a V-door space on a rig floor, a first gate rotationally attached to a left side of the frame, and a second gate rotationally attached to a right side of the frame, such that the first and second gates selectively permit and prevent access through the V-door space. Inner panels of the first and second gates can be configured to automatically open and close in response to a catwalk extending into the V-door space or retracting from the V-door space.

V-door safety gate

In one embodiment, a cable extension mechanism includes a housing and a plurality of cable tray segments adapted to retain elongate material therein, wherein each cable tray segment includes first and second cable trays. A sheave is disposed on an axle between the first and second cable trays thereby forming an extendable elbow. At least one wheel assembly is coupled to each cable tray segment to enable the tray segment to articulate between a first position wherein the elongate material is stored and has a first length shorter than an actual length of the elongate material and a substantially flat second position, thereby extending a length of the elongate material disposed thereon.

Cable extension module

A support structure for piezoelectric elements in a marine seismic cable is provided. The support structure comprises upper and lower cylindrical halves, each with channels formed therein. Two axial channels are adapted to retain three piezoelectric elements each. A third axial channel, positioned between the sensor element channels, is adapted to retain a flexible circuit. Transverse channels between the sensor element channels and the circuit channels accommodate extension from the flexible circuit. The piezoelectric elements are mounted within their respective channels with a resilient pad with adhesive on both sides. The piezoelectric elements are graded so that any group of three piezoelectric elements exhibits approximately the same sensitivity as any of the other three groups of piezoelectric elements on the support structure.

Solid marine seismic cable

Ladder rail attached paint bucket holder

Growing community of inventors

Houston, TX, United States of America

Gary W Craig