E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 44/00 (2006.01) E21B 7/04 (2006.01) E21B 47/12 (2012.01)
Patent
CA 2541516
A drill string system for performing measurement while drilling and logging while drilling operations for oil and gas drilling is provided. The drill string system includes a drill string section having a bore defined by an inner length of surface of a pipe wall which has an outer surface. A tool guide is secured in the drill string section and a support is provided for centering the tool guide in said bore. Communication ports extend through the drill pipe wall from the outer pipe surface to the inner surface and through the support to an inner surface of the tool guide, said communication ports being in communication with one another. An elongate cylindrical tool is disposed in the tool guide. A first terminated passageway in the tool is in communication with a pressure sensor within the tool to sense the drill string annular pressure. A second terminated passageway in the tool is in communication with the drill string bore and in communication with a pressure sensor within the tool to sense the drill string bore pressure. A three-dimensional orientation sensor in the tool determines orientation of the tool. An alignment mechanism is provided by the tool and the tool guide to inhibit rotation of the tool relative to the tool guide when the tool is in a desired orientation relative to the tool guide. The first terminated passageway is in communication with the communication port of the tool guide when the tool is in the desired orientation.
Macpherson Calum Robert
Sim David F.
Ryan Energy Technologies Inc.
Sim & Mcburney
LandOfFree
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