초록 ▼

Method and apparatus for generating seismic energy in offshore areas includes energy propagating means for directing energy downwardly vertically into an earth formation. A carrier contains an elongated rigid coupler means that extends from the carrier at the water level to the seat floor. A base pl

Method and apparatus for generating seismic energy in offshore areas includes energy propagating means for directing energy downwardly vertically into an earth formation. A carrier contains an elongated rigid coupler means that extends from the carrier at the water level to the seat floor. A base plate may be connected to the lower end of the coupler means. The coupler means may be a section of pipe. Driving means on the carrier drives the coupler means to cause sound energy to emanate from the coupler means or base plate into the sea floor. Such means may be a hammer-type device or a vibrator-type device. Alternatively, the lower end of the coupler means or the base plate may be driven by means of a vibrator-type device to cause sound waves to emanate from the coupler means or the base plate directly into the sea floor.

대표청구항 ▼

A method for generating a seismic signal in the earth at a location on the sea floor in the transition zone of a body of water, said method comprising the steps of: positioning a carrier on the surface of said body of water substantially directly above said location at which said seismic signal is t

A method for generating a seismic signal in the earth at a location on the sea floor in the transition zone of a body of water, said method comprising the steps of: positioning a carrier on the surface of said body of water substantially directly above said location at which said seismic signal is to be generated; lowering an elongated, rigid coupler means from said carrier into contact with said sea floor, said rigid coupler means being sufficiently long to extend from said sea floor upwardly to said carrier on said surface of said body of water; supporting at least a portion of the weight of said carrier on said rigid coupler means so as to couple said rigid coupler means to said sea floor; and applying seismic energy to said rigid coupler means whereby said rigid coupler means transmits a seismic signal directly into the earth at said location on said sea floor.