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5135734 |
Process for removing a residue containing sodium sulphate
Process for removing an industrial residue containing sodium sulphate, in which the sodium sulphate in the residue 7 is treated with a calcium salt 12 to precipitate calcium sulphate 13, which is...
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5129469 |
Drill cuttings disposal method and system
Drill cuttings are disposed of by injection into a subsurface formation by way of an annular space formed in a wellbore. The cuttings are removed from the drilling fluid, conveyed to a shearing and...
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5085277 |
Sub-sea well injection system
A slurry of oil-impregnated cuttings from the use of oil based drilling mud and other unwanted slurries and fluids may be injected into the annulus of a sub-sea well and then into a porous...
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5022787 |
Method of returning geothermal gases to the underground
Disclosed is a method of returning geothermal gases discharged from geothermal plants to the underground together with waste water through a return well, characterized in that the apparent velocity...
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5022788 |
Subductive waste disposal method
A method for the disposal of nuclear and toxic waste materials comprising the placing of waste materials into waste repositories radiating from an access tunnel constructed into a subtending...
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5004298 |
Method of rapidly abandoning large cavities washed-out in rock salt
After they have been washed out, cavities (4) in rock salt contain a large quantity of brine (8) at a temperature which is lower than the temperature of the surrounding formation (2). This means...
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5000617 |
Store
The present invention relates to a store (1) for the storage of environmentally harmful substances (2), such as stable toxic compounds and long-lived nuclear materials, etc., which store comprises...
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4976569 |
Method of introducing ecologically harmful waste into subterranean cavities
Subterranean cavities which can be filled with water or brine are also used for safely depositing ecologically harmful waste. In order to introduce the waste, which must not come in contact with...
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4973194 |
Method for burial and isolation of waste sludge
A method of disposal of waste solid material in an underwater geologic fotion on the continental margins comprises the steps of: drilling a large diameter hole into the geologic formation to a...
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4942929 |
Disposal and reclamation of drilling wastes
Drilling cuttings comprising usable gravel, silts, clays and spent drilling fluid are reclaimed and disposed of during or after the process of drilling a well by separating construction-grade...
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4919822 |
Method of confining wastes underground in a cavity leached out of salt
A method of geologically confining toxic industrial waste, the method consisting of: using a cavity (1) previously leached from a mass of rock salt (2), the cavity being initially filled with brine...
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4906135 |
Method and apparatus for salt dome storage of hazardous waste
A method and apparatus for disposal of hazardous waste and other waste materials in salt formations is disclosed herein comprising the steps of: leaching out a cavity in a salt formation;...
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4886393 |
Pretreatment of solid wastes, and wastes to be compacted, for introduction into underground salt cavities of salt caverns via a downpipe under the force of gravity
Solid wastes, and wastes to be compacted, are pretreated for introduction into underground salt cavities or salt caverns via a downpipe under the force of gravity by a process in which solid,...
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4877353 |
Waste pile
Apparatus and method for embedding hazardous waste material deeply within stable geological formations. The hazardous material is placed in containers and the containers are placed inside hollow...
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4863311 |
Lining for bore holes in salt domes
To store radioactive materials in bore holes of salt domes these bore holes are lined with superimposed tubular sections made of metallic material including in each case of an outer ring and an...
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4815894 |
Construction and use of subsea bore holes
It is proposed to construct a large diameter subsea bore hole (e.g. about 10 to 50 meters in diameter) provided with a stable wall by a method which comprises drilling a number of bore holes around...
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4787452 |
Disposal of produced formation fines during oil recovery
Recovered formation fines are pumped in slurry form into an injection well during an enhanced oil recovery process e.g. a steam flood. Said injection can be done incrementally in stages in...
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4770243 |
Device for regulating the rate of flow of water which is separated from its mixture with hydrocarbons and reinjected into the bottom of the well
Production of pertroleum deposits in which water is mixed with the hydrocarbons. The quality of separation is controlled by incorporating within a packer (200) a regulated valve (100) which...
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4765407 |
Method of producing gas condensate and other reservoirs
A reservoir is produced by injecting a mixture of carbon dioxide and nitrogen produced by treatment of a Claus plant gaseous effluent stream into the reservoir to enhance production.
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4756260 |
Sub-surface sludge injector apparatus
The combination of a self-powered reel dolly and a traveling plow injector carriage joined together by a traveling hard hose supply line is disclosed. The plow injector carriage carries a multiple...
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4738564 |
Nuclear and toxic waste recycling process
A new and useful process for the safe and convenient disposal of nuclear and toxic wastes. Such wastes are containerized and deposited in active volcanoes containing molten lava, the weight of the...
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4725164 |
Method of excavating a storage complex in rock for storing radioactive waste
The present invention relates to a method of excavating a storage complex in rock for storing radioactive material, or other harmful material. The complex to which the method relates comprises a...
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4708523 |
Rock cavity
A rock cavity for storing fluids, solid products for some other purpose, such as the protected manufacture or production of goods, comprising a substantially vertical, cylindrical rock cavity...
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4708522 |
Storage complex for storing radioactive material in rock formation
The present invention relates to a structure for storing radioactive material in rock, having a body (4) for accommodating radioactive material, the body (4) being encompassed by rock around which...
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4692061 |
Process for dumping of particulate solid waste materials in underground salt enclosed cavitives
Rock salt solution contained in the salt cavern is pumped out, after which particulate solid waste materials are treated with dust suppressant agents to form free-flowing, non-dusting, readily...
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4651824 |
Controlled placement of underground fluids
A method of controlling subterranean placement of underground fluids, such as liquids, includes (a) positioning a tubing joint longitudinally in a borehole in the earth to locate the split and...
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4632601 |
System and method for disposal of noncondensable gases from geothermal wells
A system and process for dissolving certain noncondensable gases into geothermal waste water after the useful energy has been extracted from the geothermal fluid from which the noncondensable gases...
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4615643 |
Method of sealing off a mass of waste stock containing metal cations
A method for sealing a mass of stored waste containing cations comprises insulating the waste mass with at least one grout barrier which retains heavy metallic cations. The grout barrier is...
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4586849 |
Nuclear disposal method and system
Radioactive waste material is permanently stored without the need of constant surveillance by depositing the material in a cavity located in a rock formation above the water table and between two...
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4577999 |
Process for storing liquid waste in salt cavities
A liquid waste with a pH of 7 or more, which has been adjusted above ground if necessary, is treated above ground to produce a pumpable mixture, which has a boiling point above 85° C., flash...
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4576513 |
Process for terminal storage of pumpable wastes
Pumpable wastes are mixed in salt caverns with soluble or dissolved salts, which crystallize at the cavern temperature with bonding of water of crystallization; or with organic waste materials...
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4560503 |
Fluid waste disposal
A method of disposing of fluid waste in underground permeable strata having original fluid pressure in the pores which is less than normal hydrostatic pressure.
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4500227 |
Process and geological installation for the removal of radioactive waste
It comprises in combination a series of vertical shafts for passing the waste down into the subsoil, and for ventilation purposes, linking the ground surface to the very deep storage location; a...
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4452478 |
Nuclear waste storage process and system
A system to transport and deposit nuclear wastes for disposal into abandoned or dry oil wells or other wells or deep holes. The system includes a device for connecting to a canister which holds...
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4430256 |
Reverse thermodynamic chemical barrier for nuclear waste over-pack or backfill
Radioactive waste is stored surrounded by an overpack or backfill containing non-radioactive ions of the same radioactive elements as in the waste form. In place of an overpack of the actinides,...
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4429746 |
Method and apparatus for disposing of drilling muds and wastes generated during well drilling operations and for plugging and abandoning the well
Drilling muds and waste fluids pumped to reserve pits and other on-site locations during drilling operations are recycled to the drilled well after the drilling operation is terminated and after...
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4429740 |
Combination gas producing and waste-water disposal well
The present invention is directed to a waste-water disposal system for use in a gas recovery well penetrating a subterranean water-containing and methane gas-bearing coal formation. A cased bore...
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4400314 |
Method for the ultimate disposal of high level radioactive waste
A method is disclosed for disposing of an aqueous solution of radioactive nuclides, in which the solution is diluted with formation water recovered from a subsea reservoir in a porous geological...
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4326820 |
Final depository for radioactive wastes
A final depository located underground for storing radioactive wastes contained in storable shielded containers, composed of at least one shaft extending downwardly from the ground surface, an...
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4321158 |
Backfill composition for secondary barriers in nuclear waste repositories
A backfill composition for sorbing and retaining hazardous elements of nuclear wastes comprises 50-70% by weight of quartz, 10-30% by weight of montmorillonite, 1-10% by weight of phosphate...
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4316814 |
Seal for a storage bore hole accommodating radioactive waste and method of applying the seal
A storage arrangement for radioactive waste includes a storage bore hole defined by walls of a rock formation, vessels containing radioactive waste deposited in a vertical series in the storage...
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4229122 |
Hole filling and sealing method and apparatus
A method of filling and sealing a hole extending a great distance into the earth and containing liquid contaminants, the steps comprising forming a cement slurry, continuously pumping the cement...
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4192629 |
System for the storage of radioactive material in rock
An underground repository for the storage of radioactive material, particularly spent fuel from nuclear reactors and radioactive wastes produced by reprocessing spent nuclear fuel. The repository...
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4189254 |
System for the storage of radioactive material
An underground repository for the storage of radioactive material. The repository consists of an inner cavity surrounded by a shell of rock. The shell of rock is surrounded by a shell of clay, and...
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4178109 |
Method for the disposal of nuclear or toxic waste materials
The earth has several subduction zones where the tectonic plate descends, adjacent the nondescending earth crust, into the central region of the earth. Described is a method and apparatus for the...
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4072194 |
Pumpable epoxy resin composition
An epoxy resin composition curable to a hard impermeable solid which contains a liquid aromatic diluent having the general formula: C 6 (R 1 ) 6 wherein R 1 is hydrogen; a straight or branched...
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4040480 |
Storage of radioactive material
Containers of radioactive material are placed in a well, so that the subterranean well lining absorbs much of the radiation from the containers. The heat generated by the radioactive material is...
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3959172 |
Process for encapsulating radionuclides
Radionuclides are immobilized in virtually an insoluble form by reacting at a temperature of at least 90°C as an aqueous alkaline mixture having a solution pH of at least 10, a source of silicon,...
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3892076 |
Long shield mining method
A mining recovery method that utilizes the waste material from a mine to refill mined out areas. Particular suitability is in the oil shale mining field where spent oil shale is used to support the...
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3887462 |
Disposal of waste streams containing asbestos
Aqueous waste streams containing asbestos are pumped into underground cavities, such as brine wells, and the asbestos is caused to sink to the bottom of the cavities by being contacted with a...
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