Downhole tubular with openings for signal passage

Details Downhole tubular with openings for signal passage Downhole tubular with openings for signal passage

2005-12-13

2005-12-13

Wong, Albert K. (Department: 2635)

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

C340S853200, C340S854400, C324S339000, C324S369000, C138S094000, C137S014000, C137S015110

Reexamination Certificate

active

06975243

ABSTRACT:
Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport. Methods for sealing an opening on the surface of a tubular having an elongated body with tubular walls and a central bore.

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