Reservoir monitoring using permanent sources and vertical receiver antennae: The Céré-la-Ronde case study

3D Seismic Survey Design, Second edition

“…Using more than one sweep or more than one weight drop may achieve the required boost in S/N. A convincing example of the power of repetition is shown in Meunier et al (2001) and further discussed by Cambois (2002). Their example is reproduced in Figure 4.40.…”

Decentralized Blended Acquisition

“…This subdivision leads to entirely different loudspeaker designs for the low, mid and high frequencies (see Figure 4). The audio-seismic comparison highlights the fundamental difference of the DSA concept with systems such as Polychromatic Acquisition (CREWES consortium) and SeisMovie (Meunier et al, 2001), where broadband source units operate in a multi-monochromatic manner. Inhomogeneous blending with DSAs has a number of attractive potential advantages: (1) the dedicated narrowband units of a blended array represent technically simple, no-compromise source units, (2) destructive interference within a source array is avoided, allowing angle-independent source wavelets, (3) each source type has its own spatial sampling interval, allowing multi-scale acquisition grids, (4) each source type has its own depth level, allowing ghost matching in the field (marine), (5) deblending DSA data is relatively simple: the first step (source decoding + bandpass filtering) is already very effective, (6) DSAs are more flexible to comply with the emerging strict regulation on sea life protection (marine).…”

Blended acquisition with dispersed source arrays

“…This subdivision leads to entirely different speaker designs for the low, mid, and high frequencies. The audio-seismic comparison highlights the fundamental difference of the DSA concept with acquisition systems, such as polychromatic acquisition (CREWS consortium) and SeisMovie (Meunier et al, 2001), where broadband source units operate in a multimonochromatic manner.…”