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4381044 |
Multiple chambered gas powered seismic source
A compressed-gas seismic energy source suitable for underwater prospecting. The device has two gas storage cylinders placed at the opposite ends of a shuttle. The shuttle seals both storage...
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4353431 |
Recoil reducing system for gas guns
Disclosed herein are improvements in a recoil reducing system of a gas gun which create pulses in a liquid medium by introducing therein gas under high pressure. The release of high pressure gas...
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4330871 |
Detecting subterranean hydrocarbon accumulations
Methods of detecting the presence and extent of hydrocarbon accumulations in subterranean formations are provided comprising introducing a first gas into the formation having the property of being...
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4323989 |
Wide seismic source
A wide seismic source for use in marine surveys comprising at least two arrays of seismic sources disposed to be towed in a spaced parallel arrangement. Each array includes an elongated float...
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4243116 |
Fail-safe mechanism for generating a pulse indicating the precise moment of firing of an air gun
A new circuit is added to an electrical circuit including two electrodes underwater positioned very close to an air gun gaseous exhaust wherein the exhaust from the firing air gun momentarily blows...
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4230201 |
Air release control in seismic energy source air gun
Disclosed is a seismic source device, known in the industry as an air gun, having shuttle control for allowing a predetermined discharge of compressed air into water for purposes of seismic...
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4219096 |
Submergible marine seismic source
A marine seismic source employs a cylindrical gas exploder adapted to be supported from a surface vessel in a submerged state adjacent a marine bottom. The force of expanding gases within the...
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4217571 |
Stutter seismic source
An improved seismic prospecting system comprising the use of a closely spaced sequence of source initiations at essentially the same location to provide shorter objective-level wavelets than are...
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4202425 |
Acoustic impulse generator
An acoustic impulse generator is disclosed for use in a fluid media for oceanographic, seismographic and related applications. The generator includes a housing with a piston slidably disposed...
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4196788 |
Device for propelling a liquid projectile in a liquid medium with a view to creating a shock wave
The invention relates to a device for propelling a liquid projectile to create a shock wave by implosion, said device comprising a cylinder containing two pistons, a reservoir of pressurized fluid...
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4193472 |
Open-ended seismic source
An open-ended seismic source for use in a liquid medium such as water is disclosed. The source includes a source of explosive gas, a firing chamber connected to the source, a capacitor discharge...
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4189026 |
Underwater generation of low frequency sound
A device for underwater generation of low frequency sound comprising a coally shaped explosion chamber open at both ends, a firing chamber having inlet and outlet passages at opposite ends thereof,...
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4141431 |
Determination of firing times of acoustic pulses
A marine gun for the production and timing of underwater pulses by the discharge of gas under pressure comprises a body having at least one port, means retaining the gas in said body under pressure...
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4131178 |
Seismic source for use under water
A seismic source is described which drives one or more jets of high velocity water into an underwater environment and then abruptly terminates the jets. The momentum of the free jet columns...
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4117780 |
Linear ejection underwater charge launcher
The underwater charge launcher linearly ejects a small, water-propelled explosive charge into the water from the open end of an ejection barrel trailed in the water behind a seismic exploration...
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4108272 |
Rapid fire air gun
A rapid-fire air gun for generating acoustic pulses in a body of water includes a reservoir of high-pressure air, a shut-off valve, and a throttle valve for admitting air to an attached firing...
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4098369 |
Underwater sound generator
A monopropellant fluid is ignited in a combustion chamber to form a pressurized gas volume which may include the interior of a piston valve opening into the combustion chamber. A first gas path...
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4095425 |
Control system for rotary air modulator
A control system for providing precise speed control for a rotary air modulator, and particularly for providing synchronized speed control as between two or more rotary air modulators. A common...
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4069004 |
Device to emit shock waves, with adjustable capacity
This invention concerns a device for emitting shock-waves, with adjustable capacity. Such a device comprises a valve, a barrel with a seat for this valve, barrel and valve being on the same axis,...
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4053027 |
Use for a seismic energy pulse generator for generating and shaping a seismic energy pulse
In seismic delineation of sedimentary section below the surface of a seismic energy propagation medium, a new use for an old article is disclosed. It includes a basic method for generating and...
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4043420 |
High frequency gas detonator
A high-frequency, high-repetition gas detonator is provided which is adapted for shallow seismographic work. The detonator comprises a detonation chamber, a rigid bottom plate adapted to be coupled...
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4016951 |
Air transportable seismic exploration system for use on ice-covered waters
A seismic exploration system for use on ice-covered waters is disclosed. The system comprises a housing which contains equipment such as an engine, a compressor, means for boring holes in the ice,...
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4016952 |
Marine gas exploder
A pair of movable pistons are separated within an enclosed, submerged cylinder by an expansible combustion chamber. Piston rods extend from these pistons through the opposite ends of the cylinder....
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4015526 |
Explosive charge
An explosive charge for use under hydrostatic pressure comprising high explosive composition in a flexible plastics container closed at one end and having, at the mouth end, a shoulder and a neck...
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4007804 |
Apparatus for removal of condensation from a marine gas exploder device
Condensate accumulating in the combustion chamber of a marine gas exploder of the cylinder and piston type is collected by gravity flow in a sump formed in a cylinder side wall or in a face of the...
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4006794 |
Seismic pneumatic energy source with flap valves for attenuation of bubble pulse amplitude and reduction of period of bubble oscillation
A method for decreasing the amplitude and period of bubble pulses following a primary seismic energy pulse comprises generating an expanding air bubble around a body and preventing the air bubble...
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3981379 |
Device for emitting mechanical waves
This invention concerns a device for emitting mechanical waves in an external medium. This device comprises an annular or axial combustion chamber, shut by a valve, and comprising means of...
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3968855 |
Seismic marine gun assembly
The underwater gun assembly of this invention has an acceleration barrel and a firing gun. Percussion-initiatable cartridges are carried to the acceleration barrel by a stream of water. Each...
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3952833 |
Method and apparatus for generating pressure waves in water by implosion
A gas exploder consisting of a rigid cylindrical lower member and a rigid upper member telescoping therein to form a chamber in which a gas explosion can take place is supported beneath the surface...
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3951231 |
Seismic exploration
A marine acoustic seismic generator carried on the deck of a boat is coupled to a body of water in which the boat floats by a column of water in a pipe extending between the generator and the body...
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3948489 |
In-line mixer for fluids
For the continuous mixing of fluid process materials or gases as they flow uninterrupted from a point of initial mixing to a discharge end and processed by means of intense vaporous cavitation, use...
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3937296 |
Firing device, explosive charge, method, and system, for seismic exploration
A firing device is provided for initiation of delay type seismic charge assemblies, which comprises means for conveying and guiding the charge assemblies, in the seismic test zone, into electrical...
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3919684 |
Underwater seismic source and method
A torpedo-shaped underwater seismic gun adapted to deliver an acoustic pulse to a submarine earth surface consists of an aft main body section and a separable forward nose section supported beneath...
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3912042 |
Steam imploder
An underwater sound imploder adapted for use in the exploration of minerals existing under the sea bed. The imploder consists of a combination underwater shell having a fire chamber communicating...
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3799285 |
SEISMIC ENERGY SOURCE
A seismic energy source comprises a plurality of inflatable chambers supported on heat conductive members adapted to be cooled by the flow therethrough of liquid in the medium in which the source...
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3750837 |
EXPLOSIVE SEISMIC ENERGY SOURCE WITH QUICK RELEASE VALVE
An apparatus for generating acoustical pulses in water by burning a fuel and air in a combustion chamber and releasing the explosive gases through an improved fast-acting valve to produce a seismic...
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3700066 |
GAS OPERATED SEISMIC SOURCE EMPLOYING AN INFLATABLE MEMBER
A gas operated seismic source has a rigid elongated cylindrical form and includes at least a single, hollow, thick wall barrel along most of the central length thereof, wherein the internal volume...
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3669213 |
SEISMIC GAS EXPLODER APPARATUS
A gas exploder seismic wave source which includes a closed chamber for receiving a mixture of combustible gases. Means are provided to detonate the combustible mixture thereby producing gaseous...
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3658149 |
OVAL-FLEXING SEISMIC SOURCE
A seismic source wherein an explosive gas mixture is detonated within a closed chamber having a flexible wall in contact with a body of liquid. When the gas mixture is detonated, the flexible wall...
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3623570 |
APPARATUS METHOD OF GEOPHYSICAL EXPLORATION
The invention comprises a detonator lowered into water and housing a succession of explosions for emanating energy waves to pass downwardly into the earth and includes a barrel and sequentially...
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3620327 |
LOW-FREQUENCY GAS EXPLODER
A marine seismic wave generator is provided for generating acoustic impulses into a body of water. The generator includes a housing having an expansible combustion chamber in communication with the...
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3592287 |
EXHAUST VALVE SYSTEM FOR SEISMIC GAS EXPLODER APPARATUS
A seismic gas exploder having a combustion chamber for receiving a mixture of combustible gases and a remotely positioned vacuum chamber coupled to the combustion chamber. A remotely controllable,...
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3563334 |
SEISMIC SOURCE FOR USE WHILE SUBMERGED IN A LIQUID MEDIUM
Seismic source for use in an aqueous medium utilizes an elastomer member supported by and disposed on at least a portion of a supporting structure. The supporting structure preferably includes a...
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3545563 |
DEVICE FOR EMITTING ACOUSTIC WAVES IN WATER
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3530952 |
UNDERSEA,LONG-RANGE TRACKING AND SIGNALLING SYSTEMS AND APPARATUS
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3509962 |
GAS EXPLODER WITH ATOMIZER LIQUID EXTRACTOR
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3509820 |
SEISMIC CHARGE ASSEMBLY,SEISMIC CHARGE PRIMER,AND METHOD AND SYSTEM EXPLORATION
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3506085 |
PNEUMATIC ACOUSTIC SOURCE EMPLOYING ELECTROMAGNETIC CONTROLLED VALVE
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3502170 |
IGNITION SYSTEM IN PNEUMATIC ACOUSTIC SOURCE
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3480101 |
SEISMIC WAVE SOURCE USING EXPLOSIVE GAS IN AN EXPANSIBLE ENCLOSURE
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