- 专利标题: Data transmission systems and methods for azimuthally sensitive tools with multiple depths of investigation
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申请号: US12808193申请日: 2008-11-19
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公开(公告)号: US10222507B2公开(公告)日: 2019-03-05
- 发明人: Michael S. Bittar , Clive D. Menezes
- 申请人: Michael S. Bittar , Clive D. Menezes
- 申请人地址: US TX Houston
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: US TX Houston
- 代理机构: C. Tumey Law Group PLLC
- 代理商 Benjamin Fite
- 国际申请: PCT/US2008/084006 WO 20081119
- 国际公布: WO2010/059151 WO 20100527
- 主分类号: G01V1/40
- IPC分类号: G01V1/40 ; G01V11/00
摘要:
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.