Invention Grant
- Patent Title: Data transmission systems and methods for azimuthally sensitive tools with multiple depths of investigation
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Application No.: US12808193Application Date: 2008-11-19
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Publication No.: US10222507B2Publication Date: 2019-03-05
- Inventor: Michael S. Bittar , Clive D. Menezes
- Applicant: Michael S. Bittar , Clive D. Menezes
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: C. Tumey Law Group PLLC
- Agent Benjamin Fite
- International Application: PCT/US2008/084006 WO 20081119
- International Announcement: WO2010/059151 WO 20100527
- Main IPC: G01V1/40
- IPC: G01V1/40 ; G01V11/00

Abstract:
Disclosed herein are various telemetry systems and methods suitable for communicating a cylindrical volume of formation property measurements to the surface. Some system embodiments include a downhole processor coupled to a telemetry transmitter. The downhole processor determines a compressed representation of the formation property measurements and/or selects a subset of the measurements for transmission uphole. The subset selection can be based on selected radial distances having characteristics that potentially indicate features of interest to a user. Such features include bed boundaries, and the characteristics include sinusoidal variation as a function of azimuth, large changes in this sinusoidal variation versus radial distance, or inversion suggesting the presence of a bed boundary. Various compressed representations of the cylindrical data volume are disclosed, including representations based on parameters of a sinusoidal model, representations based on a two dimensional transform, and representations based on estimates of distance and direction to a bed boundary.
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