FIELD: physics.
SUBSTANCE: method for offshore prospecting for hydrocarbons involves generating a location signal in water, detecting information waves in the infrasonic frequency range using an underwater receiving acoustic unit and processing the information signal while checking for prospecting indicators of hydrocarbon deposits. Zones for nonlinear interaction and parametric conversion of the location signal with information signals appearing on the water area are formed within the investigated water area. The underwater receiving acoustic unit is formed from two horizontally spaced apart receivers and is placed at the centre of the investigated water area. The radiating unit employs low-frequency and high-frequency acoustic radiators. Low-frequency horizontal pumping waves used to form a horizontal parametric antenna are generated in the tens-hundreds Hertz range.
EFFECT: mobility of prospecting for hydrocarbon deposits offshore while increasing reliability of prospecting on extended water areas.
2 cl, 8 dwg
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