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4194789 |
Staggered array of explosives for fragmented oil shale formation toward a vertical free face
Oil shale formation is explosively expanded toward a limited void volume for forming an in situ oil shale retort in a subterranean formation containing oil shale. In one embodiment, a void in the...
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4192553 |
Method for attenuating seismic shock from detonating explosive in an in situ oil shale retort
In situ oil shale retorts are formed in formation containing oil shale by excavating at least one void in each retort site. Explosive is placed in a remaining portion of unfragmented formation...
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4192554 |
Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort
Formation is excavated from within a retort site in formation containing oil shale for forming a plurality of vertically spaced apart voids extending horizontally across different levels of the...
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4183584 |
Dressing a rock face for abandonment
Horizontal entry tunnels are cut into or behind the rock face at selected distances and depths. From these entries cross-cut tunnels can be driven. Series of vertical under-reamed holes also can be...
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4166418 |
Time delay primer and method of making same
An improved delay primer unit for detonating an explosive material in a borehole with a detonating cord down line extending into the borehole. The primer comprises an explosive element capable of...
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4148375 |
Seismic vibration source
A system for vibrating the earth in a location where seismic mapping is to take place, including forming a relatively shallow hole in the earth such as a hole 10 feet deep, placing a solid...
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4140057 |
Axisymmetric stabilized liner implosion system
A payload (e.g., a plasma, gas, magnetic field) having an initial energy density is confined within an implosion chamber which also contains a rotating liquid liner having an approximately...
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4136754 |
Process for seismic exploration by means of a directive source
The invention concerns a process for seismic exploration. It consists in simultaneously emitting disturbances from a plurality of sources S1 . . . Sn immersed at various depths and positions chosen...
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4135450 |
Method of underground mining
A novel method of excavating underground chambers in strong rock is provided which is particularly suitable for use in stope and pillar mining operations. The method takes advantage of blasting...
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4127068 |
Earth strata fracturing method
A method for increasing the flow of earth strata contained fluid, such as natural gas and oil, to a well shaft from surrounding rock formations by explosive fracturing said rock formations with the...
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4081031 |
Oil well stimulation method
A method of stimulation oil well production uses a gas generating chemical charge that is placed in the oil well bore at a depth of known oil productivity where it is ignited to generate a gas...
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4078612 |
Well stimulating process
A method for stimulating a producing well by introducing an explosive into perforation tunnels which communicate between the reservoir and the well bore and detonating the explosive while...
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4063510 |
Process for detecting a misfired explosive
A process for indirectly detecting a misfired explosive (cartridge) which comprises charging a ferrite magnet as a tracer in an explosive charging portion together with an explosive in a blasting...
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3999609 |
Explosive well stimulation method
There is disclosed herein an improved method of well stimulation involving the use of explosive mixtures performed downhole and employing the combustible components of the fossil fuel producing...
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3964792 |
Explosive fluid transmitted shock method for mining deeply buried coal
A method for recovering coal from deeply buried deposits comprising drilling a hole down into a coal seam, filling the hole with water, and periodically detonating an explosive charge at the bottom...
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3963275 |
Method of breaking free-standing rock boulders
Free-standing boulders or rocks are fractured and broken down into many smaller pieces by impacting the boulder with a high velocity projectile. The impact energy is delivered to the rock by a...
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3913481 |
Apparatus for reducing shock and overpressure
Apparatus for reducing shock and overpressure particularly useful in connection with the sequential detonation of a series of nuclear explosives underground. A coupling and decoupling arrangement...
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3878787 |
CRYOGENIC EXPLOSIVE FRAGMENTATION
A process for fragmenting materials, such as ferrous scrap, which become substantially embrittled at cryogenic temperatures comprising the steps of: A. chilling the material to be fragmented to a...
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3804017 |
METHOD FOR MITIGATING BLAST AND SHOCK TRANSMISSION WITHIN A CONFINED VOLUME
The blast and shock wave emanating from an explosive event within a confined volume is substantially reduced when the volume is filled with a low-density, particulate, energy absorbing medium...
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3799094 |
UNDERWATER ACOUSTICAL JAMMING APPARATUS
A means for jamming underwater detection and tracking signals by sequentiy dispensing and firing explosive charges in the area of track. The exploding charges produce shock waves and low intensity...
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3792906 |
EXCAVATION OR EARTH REMOVAL BY LANDSLIDING SAME ON A FLUID LUBRICANT
The present invention relates to the excavation or removal of large masses of earth situated on a downslope by means of landsliding the same on a layer or cushion of gaseous lubricant which is...
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3775984 |
MINING METHOD AND METHOD OF LAND RECLAMATION
A mining method including land reclamation and hydropower and water resources development including removing the ore from the ore body in a predetermined pattern so that the remaining ore body...
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3763781 |
METHOD AND APPARATUS FOR SHOOTING WELLS
Fracturing and loosening geological formations with energy derived from the reaction of an Alkali metal with water.
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3755079 |
NUCLEAR REACTOR PLANT WITH INTEGRAL ENTOMBMENT
A nuclear reactor installation comprising a shield structure having a reactor chamber and a burial chamber communicating with the reactor chamber, and means operating within the shield structure...
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3747679 |
METHOD OF FRACTURING A FORMATION USING A LIQUID EXPLOSIVE
A liquid explosive is described which has a small critical diameter, is safe to handle, is capable of use in cold climates and yet is compatible with the higher temperatures commonly present in...
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3736877 |
IGNITION SYSTEM FOR A PARACHUTE FLARE
An ignition system for air dropped illuminating flares or the like, including a cord attached to a parachute which exerts a shock force. The other end of the cord is attached to a bell crank which...
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3735704 |
CONTROL BLASTING
Disclosed herein is a new concept in blasting which is based on a unique theory that permits total utilization of the energy of a blasting charge. The method of this invention enables one, through...
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3721191 |
WELL SCREEN CLEANING DEVICE
A well-screen cleaning device for unblocking clogged wells by blowing accumulated foreign material from the mesh of the well screen with rapidly expanding gasses without damaging the screen to...
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3718366 |
METHOD FOR CREATING PERMEABILITY IN SULFUR DEPOSITS
Permeability of a subterranean sulfur containing formation is increased and production of sulfur by underground fusion mining of sulfur (wherein hot water is injected into the sulfur containing...
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3715983 |
EXPLOSIVE FRAGMENTATION OF POROUS SOLIDS
Porous solids having surface area of at least five square meters per gram are reduced to smaller particle size by explosive fragmentation. Exemplary disclosure concerns aluminosilicate zeolites in...
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3707914 |
EXPLOSIVE STIMULATION WELL COMPLETIONS
Disclosed is a method and apparatus for preventing damage to the tubular goods and cement sheath of wells during an explosive stimulation treatment. The invention includes the use of periodic...
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3674313 |
METHOD FOR EFFECTING DIRECTIONAL NUCLEAR FRACTURING
A method for localizing and directing energy from an underground nuclear explosion which includes the steps of providing an acoustical blocking zone on at least one side of the contemplated...
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3632172 |
METHOD OF AND APPARATUS FOR WEAKENING ICE FOR ASSISTING AN ICEBREAKER
A self-powered vehicle is disclosed for moving across the ice ahead of an icebreaker and carrying trench-cutting means for cutting a trench along the path of travel of the icebreaker and carrying...
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3602309 |
METHOD OF EXPLODING OR IGNITING MATERIALS USING ADIABATIC COMPRESSION OF GAS
A method for exploding or igniting a pumpable material having a threshold explosion or ignition temperature which entails mixing with the material, small, discrete quantities of gas; then...
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3601052 |
UNDERWATER CHARGE LAUNCHER
This invention relates to an underwater charge launcher for consecutively firing percussion-initiated, explosively operated charges under a body of water to generate therein seismic waves useful in...
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3541709 |
EARTHMOVING SCRAPER WITH EXPLOSIVE LOADING MEANS
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3533471 |
METHOD OF EXPLODING USING REFLECTIVE FRACTURES
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3466094 |
BLASTING ARRANGEMENT FOR OIL SHALE MINING
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3461577 |
METHOD OF AND AN APPARATUS FOR DISPLACING MATERIALS
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3439408 |
PROCESS FOR INITIATING EXPLOSIVE AND CHARGE THEREFOR
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3397756 |
Reduction of explosive shock and noise by dispersion of water particles
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3395641 |
Remotely controlled tunnel explortation and destroying means
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3367542 |
Device for dispensing a slurry-type additive into a liquid solvent
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3354826 |
Multiple explosive, line charge, package
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3351015 |
Explosive activator
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3339486 |
Cap wire catcher
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3331311 |
Method for determining sound focus for mining blast
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3295810 |
Article attaching means
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3289583 |
Explosive charge
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3275098 |
Method and apparatus for generating seismic waves
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