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Sub-Degree-Per-Hour MEMS Gyroscope for Measurement While Drilling at 300°C

Journal Article · · IEEE/ION Position Location and Navigation Symposium
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2]
  1. General Electric Co., Niskayuna, NY (United States); General Electric Company
  2. General Electric Co., Niskayuna, NY (United States)

The orientation module of MWD tool offers the critical drill bit orientation information, including azimuth, inclination and toolface in order to control the path of wellbore. Although high end navigation grade gyroscope can meet the accuracy requirement for azimuth finding, the requirements of cost, size and reliability under harsh environment have largely limited the deployment of gyroscopes in MWD tools. To overcome these constraints, GE Research has developed a low cost, MEMS based Multi-Ring Gyroscope (MRG) capable of azimuth-seeking in MWD applications at 300°C. The MRG prototype has been demonstrated to achieve angular random walk (ARW) better than 0.003 deg/rt(hr) and bias instability of 0.01 deg/hr, capable of meeting azimuth finding accuracy better than 0.25 deg. It has further been tested to remain fully operational at 300 °C.

Research Organization:
General Electric Co., Niskayuna, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (EE-4G)
Grant/Contract Number:
EE0008604
OSTI ID:
1634024
Journal Information:
IEEE/ION Position Location and Navigation Symposium, Journal Name: IEEE/ION Position Location and Navigation Symposium Vol. 2020; ISSN 2153-3598
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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