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| Number | Title | Issue Date |
| 7901158 | Underwater oil storage method and system An underwater oil storage method, which includes the steps of: a) excavating a cellar in the ground earth and constructing a wall structure in the cellar to form a water pool, b) setting an oil tank in the water pool, c) supplying a predetermined amount of water to ... | 03/08/2011 |
| 7264048 | Slot cavity A method for accessing a subterranean zone from the surface includes drilling a substantially vertical well bore from the surface to the subterranean zone and forming a slot cavity in the substantially vertical well bore proximate to the subterranean zone. The slot ... | 09/04/2007 |
| 7258508 | Annular safety and flow control system for underground gas storage A gas storage well with a tubing string that is disposed within a wellbore communicating an underground storage cavern with the surface. A surface controlled subsurface safety and flow control system is provided within the wellbore so that all flow into or out of th... | 08/21/2007 |
| 7162834 | Methods for enhancing plant growth using hydrogen gas This invention provides methods of enhancing plant growth or yield, comprising exposing soil to hydrogen gas (H2), and growing plants in the soil. The H2 gas employed can be generated by electrolysis of water, produced by H2 evolving... | 01/16/2007 |
| 7151465 | Method and apparatus for transmitting information between a salt-cavern and the surface of the ground A method of transmitting information between a salt-cavern and the surface of the ground, the cavern being drilled in geological formation beds and being connected to the surface via an access borehole cased at least in part by metal tubes and presenting at least on... | 12/19/2006 |
| 6997643 | LNG tanker offloading in shallow water A system for offloading LNG (liquified natural gas) from a tanker (26) in shallow waters, for regasing, or heating the offloaded LNG to produce gaseous hydrocarbons, or gas, for pressurizing the gas, and for flowing the gas to an onshore station (56), ... | 02/14/2006 |
| 6994104 | Modular system for storing gas cylinders The methods and apparatus for transporting compressed gas includes a gas storage system having a plurality of pipes connected by a manifold whereby the gas storage system is designed to operate in the range of the optimum compressibility factor for a given compositi... | 02/07/2006 |
| 6984316 | Device for creating at least one reaction zone in an aquifer The present invention relates to a device for creating a reaction zone in an aquifer, for circulating and purifying ground and raw water, in particular for tap water use, which aquifer comprises satellite wells and at least one extraction well wherein each satellite... | 01/10/2006 |
| 6979147 | Enhanced LNG tanker offloading in shallow waters A system for offloading LNG (liquified natural gas) from a tanker (26) in shallow waters, for regasing, or heating the offloaded LNG to produce gaseous hydrocarbons, or gas, for pressurizing the gas, and for flowing the gas to an onshore station (56), ... | 12/27/2005 |
| 6932121 | Method for offloading and storage of liquefied compressed natural gas A method for offloading and storage of liquefied compressed natural gas into a salt dome by using inserting displacement gas with a pressure greater than a pressure of the liquefied compressed natural gas and a temperature of from about 80 degrees Fahrenheit to abou... | 08/23/2005 |
| 6637977 | Compressed gas storage tank utilizing rock-bed cavity A compressed gas storage tank 10 utilizes a rock-bed cavity 11 in which a bentonite slurry is fed into an underground cavity 11 formed in a rock-bed, a forcibly fed compressed gas is stored in the rock-bed cavity in a state in which the compressed gas is ... | 10/28/2003 |
| 6517286 | Method for handling liquified natural gas (LNG) A system for handling liquified natural gas (LNG) wherein (a) the LNG is delivered into a subterranean formation such that the LNG absorbs heat energy from the subterranean formation and is thereby converted to a gas product and (b) the gas is then produc... | 02/11/2003 |
| 6367547 | Downhole separator for use in a subterranean well and method In accordance with the present invention, a downhole separation tool is provided which utilizes a downhole separation chamber with a series of fluid regulators responsive to a formation fluid and constituent components for separate desirable formation yie... | 04/09/2002 |
| 6137028 | Method for the disposal of oil field wastes contaminated with naturally occurring radioactive materials (NORM) A method for the disposal of oil field wastes contaminated with naturally occurring radioactive materials (NORM). The method includes the steps of: drilling a pair of wells which intersect in a salt formation, providing a slurry containing NORM wastes and... | 10/24/2000 |
| 5794698 | Use of oleophilic wick for removing non-aqueous liquids from a subterranean formation A system and method for removing light non-aqueous liquids via a wellbore from at least a water-saturated subterranean zone using an oleophilic absorbent wick by positioning the wick in a wellbore extending from the surface through at least a portion of t... | 08/18/1998 |
| 5722792 | Method of putting a saline cavity under gas A method of putting under gas a saline cavity 3 for storing a gaseous substance, the cavity being formed by being washed out in rock salt and being filled with brine 5 once the washing-out step has been completed, the cavity includes a bottom 31 and a roo... | 03/03/1998 |
| 5540521 | Inflatable cushion for culturing and movement of aquatic organisms An aqua culture facility and method using a pneumatic pump for displacement of water or other liquid located in a confined space having rigid bottom and side walls which form an interior surface of the space, with a flexible liner having the same contour ... | 07/30/1996 |
| 5518341 | Production fluid assembly for remote offshore facilities storage The present invention concerns a system for providing storage for hydrocarbons produced at an offshore production facility. A tank assembly having inner and outer tanks defining an annular chamber therebetween and the inner tank defining an inner chamber,... | 05/21/1996 |
| 5511905 | Direct injection of cold fluids into a subterranean cavern The subterranean storage facility includes a subterranean cavern forming an underground cavity in which is disposed an immiscible displacing liquid. A plurality of concentric pipes extend from the surface into the cavity. As a cold fluid at a sub-zero tem... | 04/30/1996 |
| 5484231 | Disposal of slurries of municipal waste in deep geothermal reservoirs A process for obtaining decomposition products from a slurry of municipal waste by use of a geothermal reservoir. The process comprises placing the slurry of municipal waste into a geothermal reservoir; sealing the opening of the geothermal reservoir; and... | 01/16/1996 |
| 5433553 | Method for refuse disposal in solution-mined salt cavities A method for Refuse Disposal in Solution-Mined Salt Cavities is described. Firstly, crush municipal refuse to a particulate size of less than one inch. Secondly, compact a mixture of particulate refuse and brine into cakes less than one inch in thickness ... | 07/18/1995 |
| 5383746 | Process and device providing tightened operational safety for underground liquefied gas storage A safety device is provided for completely sealing off an underground liquified gas storage cavity when a dangerous situation arises, whereby all links between the storage cavity and the surface, including the vent link between the gas phase and the surfa... | 01/24/1995 |
| 5310282 | Hydrocarbon recovery from drilling mud stored in salt cavity Used drilling mud, and other high solids oilfield waste which has been contaminated with hydrocarbons, is pumped downhole into a salt cavity where the mud and hydrocarbons separate with the mud gravitating to the bottom of the cavity and the hydrocarbons ... | 05/10/1994 |
| 5173007 | Method and apparatus for in-line blending of aqueous emulsion Method and apparatus for the in-line blending of a crude oil with an aqueous hydrocarbon emulsion, such as an aqueous emulsion formed in-situ in a cavern in a salt dome, wherein the crude oil and aqueous crude oil emulsion are separately fed to a dynamic ... | 12/22/1992 |
| 5147147 | Method for the removal of aqueous liquids from the sump of an underground cavity A method for the removal of water or aqueous liquids from the sump of an underground cavity, especially a cavern, is based on providing a process in which a water-miscible organic liquid is added to the sump, and then the mixture formed in this way is ext... | 09/15/1992 |
| 5129759 | Offshore storage facility and terminal The offshore facility and terminal includes a plurality of underground salt caverns located beneath the ocean floor. An offshore platform is located above the caverns and includes a flow line to a single point mooring for connection to a supertanker. A we... | 07/14/1992 |
| 5052856 | Method for underground storage of gas A method for underground storage of a gas is disclosed in which the stored gas or top gas is physically separated from the cushion gas to avoid undesired intermixing of the two gases. This enables a less expensive cushion gas to be used resulting in a sig... | 10/01/1991 |
| 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 of waste water Veo relative to the return well... | 06/11/1991 |
| 5013183 | Apparatus for drawing off ground air The invention relates to an apparatus for drawing off ground air under the foundation slab of a house. A tube is placed in an excavation made some meters away from the house. The bottom end part of the tube is downwardly open and is provided with a plural... | 05/07/1991 |
| 4991624 | Safety valves and control apparatus Safety valves and control apparatus for generally inaccessible fluid storage facilities wherein a closure mechanism may be attached to an access conduit at an accessible control location and inserted with the conduit into a casing or outer conduit, which ... | 02/12/1991 |
| 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 the water or brine, a liquid which is not miscible with wate... | 12/11/1990 |
| 4949749 | Safety valves and control apparatus for underground storage facilities Safety valves and control apparatus for generally inaccessible fluid storage facilities wherein a closure mechanism may be attached to an access conduit at an accessible control location and inserted with the conduit into the storage facilities, which clo... | 08/21/1990 |
| 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 (5); incorporating the waste in a pumpable waste-containi... | 04/24/1990 |
| 4808029 | System for subterranean storage of energy A system for subterranean storage of energy comprises a lower and a higher cavern formed in a subterranean salt formation, both caverns being partially filled with salt solution, a gas supply for pressurizing a head space in each cavern, a first channel i... | 02/28/1989 |
| 4732508 | Safety device for a filling tube of an underground facility for storing liquefied gas under pressure A safety device for a tube (8) for inserting or removing a liquid substance for storage in a storage facility in a cavity in a water-impregnated rock mass, said liquid being the liquid phase of a substance which is a gas at ordinary temperature, which liq... | 03/22/1988 |
| 4701072 | Draining well for an underground cavity for storing liquefied gas under pressure A draining well (2) extending downwardly from the bottom (3) of an underground cavity for storing liquefied gas under pressure has an upper portion (9) of large area and a lower portion (10) of smaller area. The volume of the upper portion is sufficient f... | 10/20/1987 |
| 4626131 | Underground liquid storage system and method A storage system and method for storing a valuable liquid in a subterranean cavity with a displacing liquid such as brine. The valuable liquid, which normally has a density above or about that of the displacing liquid, is modified by dissolving therein sm... | 12/02/1986 |
| 4618282 | Composition and a method for covering the sump in cavities Disclosed is a composition and a method for covering the sump in cavities serving to store gaseous or liquid, non-aqueous substances, using a so-called geologically old crude oil to which is added a reactive component which combines with the functional gr... | 10/21/1986 |
| 4616669 | Mixing fluids A method for mixing hydrocarbons in a underground storage cavern using immiscible fluids is disclosed.... | 10/14/1986 |
| 4592677 | Desiccant bed on hydrocarbon charged to and removed from underground (salt) cavern Hydrocarbon liquid, such as propylene, is charged (dry) from manufacture by way of a bed of desiccant into a salt (brine-containing) cavern for wet storage, thusly regenerating the wet desiccant having been used to dry wet hydrocarbon yielded from the cav... | 06/03/1986 |
