Class 405/58 - Dissolving earth

Subclass of Class 405 - Hydraulic and earth engineering
Definition: Method or apparatus wherein the reservoir or storage chamber
No. of patents: 19
Last issue date: 08/21/2007

Number	Title	Issue Date
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
7179374	Device for shear-thinning of solids containing material The invention relates to a device to be used in connection with thickening and clarifying apparatuses for shear-thinning of solids containing material, such as slurry, which device contains one conduit for feeding material to be shear-thinnned and another conduit fo...	02/20/2007
7156579	Manufactured caverns in carbonate rock Disclosed is a process for manufacturing underground caverns suitable in one embodiment for storage of large volumes of gaseous or liquid materials. The method is an acid dissolution process that can be utilized to form caverns in carbonate rock formations. The cave...	01/02/2007
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
6820696	Petroleum production utilizing a salt cavern A method and system for the combined underground storage and production of petroleum. A wellbore is drilled such that the surface is in fluid communication with an oil bearing and a salt bearing formation. Salt is leached from the salt bearing formation to form a ca...	11/23/2004
6688702	Borehole mining method A Borehole Mining method comprising driving a borehole, into a production zone under a low-degree angle ଱ (0	02/10/2004
5957539	Process for excavating a cavity in a thin salt layer The invention concerns a process for excavating by dissolution an underground cavity in a thin salt layer, in order to store a fluid therein. According to the invention, the process includes the steps of producing an injection duct, an extraction duct, an...	09/28/1999
5669734	Process for making underground storage caverns A new method for making large underground storage caverns in bedded or domal salt deposits for the storage of fluid materials in areas where solution mining water temperatures are low by a process which significantly reduces the amount of time required to...	09/23/1997
5346330	Method of yielding oil residues or oil containing liquids from contaminated ground layers A method of yielding oil residues or oil containing liquids from contaminated ground layers, includes forming at least two adjacent bore holes in a contaminated ground region, producing connecting passages between the bore holes by loosening and partially...	09/13/1994
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
5199501	Drilling or chiseling tool with suction apparatus A drilling or chiseling tool (1) includes a suction device (2) with a suction head (3), a suction line (4) extending from the suction head to a suction blower wheel (5) and a separating device (6). The suction device (2) is detachably connected with the t...	04/06/1993
5141057	Safety sleeve for a borehole communicating with an underground reserve of fluid under pressure, and associated safety system, and an associated borehole operating method In order to provide safety in a borehole communicating in particular with a cavity washed out from rock salt and containing gas under pressure, the prior art provides devices suffering from the drawback of reducing the flow sections through the tubes in t...	08/25/1992
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
4596490	Underground storage chambers and methods therefore This invention relates to a new and novel method for the underground storage of fluid materials including those which are readily soluable or reactive with water or brine such as concentrated caustic soda, ethylene dichloride or anhydrous ammonia within c...	06/24/1986
4488834	Method for using salt deposits for storage A method for developing, evacuating, using, sealing, and re-entering multiple stacked cavities which are created from a single well in salt deposits. The cavities are created in a salt deposit by circulating raw water through concentric casing strings in ...	12/18/1984
4282444	Method for deep shaft pumpback energy generation A method and apparatus are disclosed for converting the potential energy stored in an upper reservoir of water into electrical energy, whereby, during periods of high energy demand, water is introduced from the upper reservoir into an underground salt dom...	08/04/1981
4249833	Method of depressurizing a leached salt cavern A salt cavern is leached with fresh water by cementing its surface casing in a hole to the depth of the roof of the cavern to be leached, and inserting coaxial short and long leach strings into the hole, with a petroleum liquid between the surface casing ...	02/10/1981
4192555	Method of disposing solid sodium chloride while selectively solution mining potassium chloride Disclosed is a method of disposing solid sodium chloride while selectively solution mining potassium chloride from a subterranean deposit containing potassium chloride and sodium chloride. In this novel method an aqueous solvent saturated with respect to ...	03/11/1980
3966541	Concentration of underground brines in situ by solar evaporation A process is provided for the recovery of chemicals, such as chlorides, sulfates, carbonates and borates of such alkali metals as sodium and potassium, among others, from underground brines associated with an ore body containing said chemicals, wherein th...	06/29/1976

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Class 405/58 - Dissolving earth