Digital Accelerometers – Expectations and Practical Achievements

3D Seismic Survey Design, Second edition

“…For these high frequencies, the maximum wavenumber of the signal may get close to the maximum wavenumber of the ground roll (Figure 1.7) so that the corresponding required sampling intervals are similar and arrays are no longer required to compensate for coarse sampling of the ground roll. Mougenot et al (2011) also show that the array-based acquisition gives better resolution at depth due to better suppression of ambient noise by the array (several sensors) than by a single sensor.…”

“…In a balanced comparison between MEMS-based accelerometers and geophone arrays, Mougenot et al (2011) demonstrate that processing single-sensor data acquired with explosives can preserve frequencies to about 140 Hz, whereas the maximum frequency of data acquired with geophone arrays is no more than 100 Hz (Figure 4.6). The 2D data were acquired with 25-m station intervals for the geophone arrays and for the single sensors.…”

“…4.6. Loss of high frequencies for array-based acquisition (geophone) as compared to single-sensor acquisition (DSU) (fromMougenot et al, 2011).…”

A high-sensitivity MEMS-based accelerometer

“…Accelerometers based on a microelectromechanical system (MEMS) have been developed which are easily integrated with seismic recording systems and which fulfill all these requirements from operational and geophysical points of view (Mougenot et al, 2011). A receiver point might consist of a single device (e.g., the digital sensor unit [DSU]) whose weight is about half that of a single geophone connected to a digitizer ( Figure 1).…”

Development of the high sensitivity MEMS accelerometer for oil and gas exploration

“…Data acquisition systems with MEMS sensors have already been commercialised by ION in US and Sercel in France (Yu et al, 2006;Mougenot et al, 2011). Shell independently developed a MEMS sensor as well (HP, 2011).…”