Shell Egypt NV completed a low frequency seismic survey in the Egypt’s Northeast Abu Gharadig basin.
By OGJ editors
HOUSTON, Jan. 29 – Shell Egypt NV completed a low frequency seismic survey in the Egypt’s Northeast Abu Gharadig basin.
The survey objective was to introduce LF technology in the Western Desert, said Spectraseis, Zurich, Switzerland. The project is the largest LF seismic synchronous survey, with 110 data points recorded in 4 days. The survey data is being processed. Initial results are expected in early February 2010.
The project took place with logistical support from Ardiseis, a regional joint venture between CGGVeritas and TAQA in the Middle East region, and covered 60 sq km in one week using 17 crew.
The survey used the numerical technique of time reverse imaging, which spatially localizes the source of hydrocarbon microtremors by feeding measured signals to the velocity signal, thus numerically estimating the depth origin of spectral anomalies. The result is a subsurface image that suggests the hydrocarbon reservoirs at depth.