A Robust MEMS Based Multi-Component Sensor for 3D Borehole Seismic Arrays

Services, Paulsson Geophysical

Paulsson Geophysical Services

关键词: Natural Gas Deposits;    Boreholes;    Seismic Arrays;    Microelectronics;    Fiber Optics;   

DOI  :  10.2172/951898
RP-ID  :  None
RP-ID  :  FC26-04NT42241
RP-ID  :  951898

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objective of this project was to develop, prototype and test a robust multi-component sensor that combines both Fiber Optic and MEMS technology for use in a borehole seismic array. The use such FOMEMS based sensors allows a dramatic increase in the number of sensors that can be deployed simultaneously in a borehole seismic array. Therefore, denser sampling of the seismic wave field can be afforded, which in turn allows us to efficiently and adequately sample P-wave as well as S-wave for high-resolution imaging purposes. Design, packaging and integration of the multi-component sensors and deployment system will target maximum operating temperature of 350-400 F and a maximum pressure of 15000-25000 psi, thus allowing operation under conditions encountered in deep gas reservoirs. This project aimed at using existing pieces of deployment technology as well as MEMS and fiber-optic technology. A sensor design and analysis study has been carried out and a laboratory prototype of an interrogator for a robust borehole seismic array system has been assembled and validated.