Gary A Craig

US Patent:

20130048580, Feb 28, 2013

Filed:

Aug 31, 2011

Appl. No.:

13/222334

Inventors:

Sean Bailey - Houston TX, US
Gary Craig - Houston TX, US
Padira Reddy - Houston TX, US

Assignee:

NABORS INTERNATIONAL INC. - Houston TX

International Classification:

F16L 3/08

US Classification:

211 131

Abstract:

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 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.

US Patent:

44480571, May 15, 1984

Filed:

May 21, 1982

Appl. No.:

6/380840

Inventors:

Gary J. Craig - Houston TX

Assignee:

Geosource Inc. - Houston TX

International Classification:

G01V 1300
G01M 1900

US Classification:

73 1DV

Abstract:

An apparatus and method for testing a geophone during assembly is disclosed. The apparatus includes a light source cooperating with a photocell for generating a voltage signal in response to light. A member for support of the geophone to be tested is located in a defined path between the light source and the photocell for generating a voltage signal. The apparatus further includes a display unit for indicating the voltage signal generated, which is representative of the resilient characteristics of the geophone springs, characterizing the position of the geophone coil and its resonant frequency.

US Patent:

61607622, Dec 12, 2000

Filed:

Jun 17, 1998

Appl. No.:

9/098918

Inventors:

John Luscombe - Sugarland TX
Gary J. Craig - Houston TX
John L. Maida - Houston TX
Louis W. Erath - Abbeville LA
Malcolm Paul Varnham - Alresford, GB
Ed Kluth - Alresford, GB

Assignee:

Geosensor Corporation - Houston TX

International Classification:

H04R 102

US Classification:

367149

Abstract:

An element that is sensitive to a pressure or acceleration signal comprises an optical element capable of changing its index of refraction and/or path length in response to a time varying pressure or in response to acceleration and a pliant mounting member supporting the optical element. The mounting member changes its geometrical configuration in response to the time varying pressure or acceleration. Some embodiments of the invention use a mechanical amplifier to achieve the needed sensitivity.

US Patent:

61886459, Feb 13, 2001

Filed:

Oct 15, 1999

Appl. No.:

9/419199

Inventors:

John L. Maida - Houston TX
John Luscombe - Sugarland TX
Gary J. Craig - Houston TX
Louis W. Erath - Abbeville LA

Assignee:

Geosensor Corporation - Houston TX

International Classification:

H04B 1100

US Classification:

367151

Abstract:

A seismic sensor array includes a means for passive electrical to optical energy transformation and transmission. This transformation is used remotely with traditional sensor arrays, which may include hydrophones, geophones, or a combination of them. The transformation means is used to develop an optical signal in a fiber which then conveys the seismic signals to a recording center or data accumulator. The transformation means preferably comprises a stack of piezoelectric elements capped on each end by a rounded crown to accommodate an optical fiber wound around the stack and the crowns.

US Patent:

62565885, Jul 3, 2001

Filed:

Jun 11, 1999

Appl. No.:

9/330584

Inventors:

John L. Maida - Houston TX
John Luscombe - Sugarland TX
Gary J. Craig - Houston TX
Louis W. Erath - Abbeville LA

Assignee:

Geosensor Corporation - Houston TX

International Classification:

G01V 128

US Classification:

702 14

Abstract:

A seismic sensor array includes a means for passive electrical to optical energy transformation and transmission. This transformation is used remotely with traditional sensor arrays, which may include hydrophones, geophones, or a combination of them. The transformation means is used to develop an optical signal in a fiber which then conveys the seismic signals to a recording center or data accumulator.

US Patent:

20200325755, Oct 15, 2020

Filed:

Apr 12, 2019

Appl. No.:

16/383042

Inventors:

- Houston TX, US
Gary W. CRAIG - Houston TX, US

International Classification:

E21B 41/00
E06B 7/28
E06B 11/02
E05B 65/00
E05C 17/12

Abstract:

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.