The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 2010
Filed:
Feb. 04, 2009
William N. Gibler, The Woodlands, TX (US);
Larry A. Jeffers, Minerva, OH (US);
Richard L. Lopushansky, The Woodlands, TX (US);
Frederick J. Gillham, The Woodlands, TX (US);
William N. Gibler, The Woodlands, TX (US);
Larry A. Jeffers, Minerva, OH (US);
Richard L. Lopushansky, The Woodlands, TX (US);
Frederick J. Gillham, The Woodlands, TX (US);
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
A method and apparatus for detecting seismic vibrations using a series of MEMS units, with each MEMS unit including an interferometer is described. The interferometers on the MEMS units receive and modulate light from two differing wavelengths by way of a multiplexing scheme involving the use of Bragg gratings and light circulators, and an optoelectronic processor receives and processes the modulated light to discern vibrational movement of the system, which in turn allows for monitoring and calculation of a specified environmental parameter, such as seismic activity, temperature or pressure.