Recently, the concept of simultaneous source acquisition (Berkhout, 2008; Beasley et al., 1998) showed that can significantly enhance field acquisition efficiency and at the same time due to the increased seismic data sampling improves seismic image quality. In 2010 Saudi Aramco by employing a fixed active super spread continuously recorded 18 single vibrators operating simultaneously in 18 separate quadrants. During this test over 45,000 vibrator points were acquired in 24hr field operation. The source blended acquisition field test aimed in the optimization of the following field acquisition parameters: high source density, unique up-sweep length and source distance separation. For blended data since all the sources were acquired at different times, the characteristic of interfering noise appears random in certain data sorting domains such as the common-receiver, common-offset, cross-spread and CMP. Stacking and migrating the blended seismic data without any further denoising produces acceptable results as stacking can effectively suppress random energy. However, additional efforts towards crosstalk separation have been proposed so that deblended pre-stack data can be further processed for amplitude and reservoir characterization analysis. In this paper, we illustrate suitable processing techniques and workflows in order to attenuate source interference noise so that the simultaneous sources can be separated effectively into equivalent data sets for further pre-stack processing. Comparisons with conventionally acquired 3D seismic data in the same area are also presented.

You can access this article if you purchase or spend a download.