Grand Isle 95 Field is located 40 miles offshore Louisiana in 200 ft of water. First stage seismic exploration work was completed by Mobil in 1972. High-amplitude events were observed on the seismic sections which were believed to be related to the existence of hydrocarbons. Reprocessed seismic lines showed some amplitude change near two questionable flat spots which were thought to be the gas-oil and oil-water sand contacts. Careful examination of the original seismic record proved that one of the flat events was caused by noise or distortions under the fault. Subsequent seismic modeling studies led to the success of exploration and exploitation of the field.--Journal abstract.

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