Did You Know...
...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7735935 | In situ thermal processing of an oil shale formation containing carbonate minerals A method of treating an oil shale formation in situ includes providing heat directly from one or more heaters to at least a portion of the formation. The heat is controlled to maintain an average temperature of the portion below a dissociation temperature of carbona... | 06/15/2010 |
| 7644993 | In situ co-development of oil shale with mineral recovery A method of producing hydrocarbon fluids from a subsurface organic-rich rock formation, for example an oil shale formation, in which the oil shale formation contains water-soluble minerals, for example nahcolite, is provided. In one embodiment, the method includes t... | 01/12/2010 |
| 7410627 | Sodium carbonate and sodium bicarbonate production A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 25... | 08/12/2008 |
| 7350577 | Method and apparatus for injecting steam into a geological formation The present invention generally provides a method and apparatus for injecting a compressible fluid at a controlled flow rate into a geological formation at multiple zones of interest. In one aspect, the invention provides a tubing string with a pocket and a nozzle a... | 04/01/2008 |
| 7323434 | Electropositive production well treating fluid and method of preparing the same An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent,... | 01/29/2008 |
| 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 |
| 7225887 | Method of drilling an ultra-short radius borehole A method of drilling a borehole into an earth formation using a drill string having an upper part and a lower part which is more flexible than the upper part, the method involving drilling a first section of the borehole, drilling a second section of the borehole fr... | 06/05/2007 |
| 7214318 | Method for separation of actinide elements A method for separation of actinide elements comprising feeding a solution containing actinide elements such as americium, curium, californium and the like, into a resin column in which a weakly basic primary, secondary or tertiary anion exchange resin obtained by r... | 05/08/2007 |
| 7210439 | Switching element for a valve train of an internal combustion engine The invention proposes a switching element (1) for a valve train of an internal combustion engine, particularly for valve deactivation, with a simple-to-implement measure for adjusting the coupling lash of its coupling means (8) in a receptacle (6 | 05/01/2007 |
| 7207303 | Switching element A switch element (1) is proposed for valve shut-off, fabricated as cam follower for a plunger rod valve drive of an internal combustion engine, having an outer part (2) and an inner element (4) axially movable in its bore (3) and with rot... | 04/24/2007 |
| 7201221 | Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ... | 04/10/2007 |
| 7185702 | Methods and compositions for the in-situ thermal stimulation of hydrocarbons using peroxide-generating compounds One embodiment provides a method for stimulating hydrocarbon production in a subterranean formation, comprising: introducing a peroxide-generating compound into a desired location in a subterranean formation, wherein the peroxide-generating compound is substantially... | 03/06/2007 |
| 7147058 | Method of and system for production of hydrocarbons For production of hydrocarbons with high and medium gas-oil ratio from a well with a wellhead and a bottomhole communicating with a formation, and with a casing and a tubing located inside the casing and forming a space therebetween, steps are performed and means ar... | 12/12/2006 |
| 7141173 | treatment process to remove metal contamination from groundwater The present invention provides a process for enhancing the metal contaminant sorption capacity of mineral compounds within a groundwater-bearing formation by manipulating the pH and the surface acidity of the mineral compounds. The process is useful in removing meta... | 11/28/2006 |
| 7128886 | Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 25... | 10/31/2006 |
| 7118624 | Method for making a road base material using treated oil and gas waste material The present invention provides a novel method to produce grade road base material using recycled oilfield waste, called “oil and gas waste,” more specifically, drilling waste and aggregate and a novel road base material. Hydration and mixing of the waste materia... | 10/10/2006 |
| 7100994 | Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation A method for treating a hydrocarbon containing formation is provided. In one embodiment, heat from one or more heaters may be provided to at least a portion of the formation. Heat may be allowed to transfer from the one or more heaters to at least a part of the form... | 09/05/2006 |
| 7097386 | Simultaneous development of underground caverns and deposition of materials A method is provided for simultaneously developing caverns while depositing wastes or other materials in them. A well is first drilled into a salt formation and the development of a salt cavern by means of solution mining is initiated. When the development of the ca... | 08/29/2006 |
| 7077198 | In situ recovery from a hydrocarbon containing formation using barriers A method is described for inhibiting migration of fluids into and/or out of a treatment area undergoing an in situ conversion process. Barriers in the formation proximate a treatment area may be used to inhibit migration of fluids. Inhibition of migration of fluids ... | 07/18/2006 |
| 7066983 | Method for thiosulfate leaching of precious metal-containing materials Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polyth... | 06/27/2006 |
| 7013937 | Apparatus and process for mining of minerals Apparatus for transporting mineral from a point of mining to a remote location, the apparatus including a mobile mineral breaker rig (MBR) having a mineral outlet, the rig including a fluid inlet pipe for receiving conveying fluid, a mineral inlet for introducing mi... | 03/21/2006 |
| 6997518 | In situ thermal processing and solution mining of an oil shale formation An oil shale formation may be treated using an in situ thermal process. Heat may be provided to the treatment area. Fluids may be injected into the formation to remove a component within the formation. Hydrocarbons, H2, and/or other formation fluids may b... | 02/14/2006 |
| 6976533 | Method and system for accessing subterranean deposits from the surface Improved An improved method and system for accessing subterranean deposits from the surface that substantially eliminates or reduces the disadvantages and problems associated with previous systems and methods. In particular, the present invention provides an articul... | 12/20/2005 |
| 6942030 | Three-dimensional well system for accessing subterranean zones A method for accessing a plurality of subterranean zones from the surface includes forming an entry well from the surface and forming two or more exterior drainage wells from the entry well through the subterranean zones. The exterior drainage wells each extend outw... | 09/13/2005 |
| 6913082 | Reduced debris milled multilateral window A reduced debris milled multilateral window. In a described embodiment, a window joint is constructed in a manner which reduces debris created when a window is milled therethrough. The window joint includes a generally tubular body having a sidewall, a window portio... | 07/05/2005 |
| 6854809 | Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 25... | 02/15/2005 |
| 6679326 | Pro-ecological mining system The invention comprises a high pressure fluid barrier forming an enclosure boundary with respect to overburden and floor strata separated by one or more production strata containing desirable fluidizable deposits and/or potential reaction materials. A cen... | 01/20/2004 |
| 6609761 | Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of ... | 08/26/2003 |
| 6460936 | Borehole mining tool A borehole mining tool comprising a drill string having an inner pipe column and an outer pipe column. Water is forced under high pressure down an annulus between the outer pipe and inner pipe. A hydromonitor is attached to the end of the drill string. A ... | 10/08/2002 |
| 6436154 | Use of dodecylbenzene sulfonic acid or salt as a scale inhibitor The formation of scale on equipment surface in contact with sodium alkali containing brines is inhibited by the addition of an alkylbenzene sulfonic acid or salt thereof to the brines.... | 08/20/2002 |
| 6251346 | Solution mining of carbonate/bicarbonate deposits to produce soda ash A solution mining process for recovering sodium values from an underground deposit of a sodium bicarbonate containing ore is disclosed. The process involves contacting the ore with an aqueous sodium carbonate-containing solution to produce a dilute brine ... | 06/26/2001 |
| 6193881 | In-situ chemical reactor for recovery of metals or purification of salts An in-situ reactor with hydrologic cells is provided to facilitate recovery of metals such as gold from rocks, or purification of salts such as potassium or magnesium chloride formed by evaporation of brines, by injecting into a source aquifer a fluid, wh... | 02/27/2001 |
| 6164727 | Method of mining a soluble mineral For use in a field having a plurality of interspersed injection and production wells that extend to a mineral bearing formation, a system for extracting the mineral from the formation having a jet pump system for each production well, each pump system hav... | 12/26/2000 |
| 6035949 | Methods for installing a well in a subterranean formation This invention uses a combination of drilling, dissolving, and sinking to emplace a closed end well pipe into a salt formation. The well which results can be used to produce geothermal power or for such other purposes for which it may offer an advantage. ... | 03/14/2000 |
| 6022516 | Method of reducing the formation of scale in the production of soda ash from trona and nahcolite ores The methods for decreasing scale formation in processes for the production of soda ash from trona or nahcolite ores are provided. Diphosphonic acid materials such as 1-hydroxy-ethylidene diphosphonic acid, 1-hydroxy-propylidene-1,-diphosphonic acid, ... | 02/08/2000 |
| 6022080 | Process and system for the solution mining of evaporites and preparation of saline solutions A process and a system for the solution mining of evaporites and preparation of the obtained saline solution and in particular for the dissolution of salts, evaporation and cooling of the obtained saline solution, and crystallization of salts under subtro... | 02/08/2000 |
| 5988760 | Process for hollowing out a cavity formed of a plurality of sub-cavities in a thin layer of salt A process for hollowing out a cavity, by dissolution, in a ground formation comprising at least one layer containing predominantly salt, the process including the steps of drilling at least one hole having a substantially horizontal section arranged at le... | 11/23/1999 |
| 5770730 | Synthesis of carbodimide analogs of chlorins and bacteriochlorins and their use for diagnosis and treatment of cancer A method for the preparation of an imide derivative of purpurin by reacting hexylamine with a chlorin or bacteriochlorin having a macrocycle with a six-membered anhydride ring fused thereto, said macrocycle containing a and b rings which may be saturated ... | 06/23/1998 |
| 5766270 | Solution mining of carbonate/bicarbonate deposits to produce soda ash A solution mining process for recovering sodium values from an underground deposit of a sodium bicarbonate containing ore is disclosed. The process involves contacting the ore with an aqueous sodium carbonate-containing solution to produce a dilute brine ... | 06/16/1998 |
| 5709731 | Slurry pipeline leaching method A method for concurrently transporting and leaching metal values from an ore or concentrate containing said metal values from an originating site such as an elevated site to a delivery site comprising the steps of crushing and/or grinding the ore or conce... | 01/20/1998 |
