Lithological displacement of an evaporite mineral stratum

A lithological displacement of an underground evaporite mineral stratum from an underlying non-evaporite stratum comprising the application of a lifting hydraulic pressure of a fluid at a weak interface between the strata, resulting in lifting the overburden above the interface, separating the evapo...

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Bibliographische Detailangaben
Hauptverfasser:	HUGHES Ronald O, VENDETTI Joseph A, HANSEN David, KOLESAR John, REFSDAL Larry, PATTERSON Justin T, PAPERINI Matteo, SCHMIDT Ryan, DETOURNAY Jean-Paul, ORTEGO Beatrice C, BRICHACEK Todd, CUCHE Herve
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS INORGANIC CHEMISTRY METALLURGY MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	A lithological displacement of an underground evaporite mineral stratum from an underlying non-evaporite stratum comprising the application of a lifting hydraulic pressure of a fluid at a weak interface between the strata, resulting in lifting the overburden above the interface, separating the evaporite stratum from the underlying non-evaporite stratum and thus forming a mineral free-surface. The lifting hydraulic pressure is greater than the overburden pressure. The formed mineral free-surface is accessible for dissolution by a solvent. The fluid used for lifting may comprise a solvent suitable to dissolve the mineral. The evaporite mineral stratum preferably comprises trona, nahcolite, wegscheiderite, or combinations thereof.