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Found results for
 patents
1.
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Trona solution mining methods and compositions
| Application Number |
17399806 |
| Grant Number |
11746639 |
| Status |
In Force |
| Filing Date |
2021-08-11 |
| First Publication Date |
2021-12-02 |
| Grant Date |
2023-09-05 |
| Owner |
SESQUI MINING, LLC. (USA)
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| Inventor |
- Day, Roger L.
- Herickhoff, James A.
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Abstract
The invention discloses a method of solution mining trona by injecting an aqueous solvent into an underground cavity comprising trona to dissolve trona in the aqueous solution and removing the aqueous solution from the cavity at about the WTN triple point (the temperature at which solid phase wegscheiderite, trona, and nahcolite can co-exist in an aqueous solution). Alkaline values from the removed aqueous solution are recovered to produce a barren liquor. The method further includes either (i) treating the barren liquor to produce an aqueous solvent or (ii) treating injected aqueous solvent to reduce clogging at the trona dissolution surface caused by supersaturation of sodium bicarbonate, and precipitation of nahcolite and wegscheiderite as the aqueous solution in the cavity approaches saturation of both dissolved sodium bicarbonate and sodium carbonate.
IPC Classes ?
- E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 43/28 - Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
- E21B 43/34 - Arrangements for separating materials produced by the well
- C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
- C22B 26/10 - Obtaining alkali metals
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2.
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Trona solution mining methods and compositions
| Application Number |
16926307 |
| Grant Number |
10995598 |
| Status |
In Force |
| Filing Date |
2020-07-10 |
| First Publication Date |
2020-12-24 |
| Grant Date |
2021-05-04 |
| Owner |
SESQUI MINING, LLC (USA)
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| Inventor |
- Day, Roger L.
- Herickhoff, James A.
|
Abstract
The invention discloses a method of solution mining trona by injecting an aqueous solvent into an underground cavity comprising trona to dissolve trona in the aqueous solution and removing the aqueous solution from the cavity at about the WTN triple point (the temperature at which solid phase wegscheiderite, trona, and nahcolite can co-exist in an aqueous solution). Alkaline values from the removed aqueous solution are recovered to produce a barren liquor. The method further includes either (i) treating the barren liquor to produce an aqueous solvent or (ii) treating injected aqueous solvent to reduce clogging at the trona dissolution surface caused by supersaturation of sodium bicarbonate, and precipitation of nahcolite and wegscheiderite as the aqueous solution in the cavity approaches saturation of both dissolved sodium bicarbonate and sodium carbonate.
IPC Classes ?
- E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 43/28 - Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
- E21B 43/34 - Arrangements for separating materials produced by the well
- C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
- C22B 26/10 - Obtaining alkali metals
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3.
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Trona solution mining methods and compositions
| Application Number |
16453400 |
| Grant Number |
11193362 |
| Status |
In Force |
| Filing Date |
2019-06-26 |
| First Publication Date |
2020-07-16 |
| Grant Date |
2021-12-07 |
| Owner |
Sesqui Mining, LLC (USA)
|
| Inventor |
- Day, Roger L.
- Herickhoff, James A.
|
Abstract
The invention discloses a method of solution mining trona by injecting an aqueous solvent into an underground cavity comprising trona to dissolve trona in the aqueous solution and removing the aqueous solution from the cavity at about the WTN triple point (the temperature at which solid phase wegscheiderite, trona, and nahcolite can co-exist in an aqueous solution). Alkaline values from the removed aqueous solution are recovered to produce a barren liquor. The method further includes either (i) treating the barren liquor to produce an aqueous solvent or (ii) treating injected aqueous solvent to reduce clogging at the trona dissolution surface caused by supersaturation of sodium bicarbonate, and precipitation of nahcolite and wegscheiderite as the aqueous solution in the cavity approaches saturation of both dissolved sodium bicarbonate and sodium carbonate.
IPC Classes ?
- E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 43/28 - Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
- E21B 43/34 - Arrangements for separating materials produced by the well
- C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
- C22B 26/10 - Obtaining alkali metals
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4.
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Trona solution mining methods and compositions
| Application Number |
16248180 |
| Grant Number |
10422210 |
| Status |
In Force |
| Filing Date |
2019-01-15 |
| First Publication Date |
2019-09-24 |
| Grant Date |
2019-09-24 |
| Owner |
Sesqui Mining, LLC. (USA)
|
| Inventor |
- Day, Roger L.
- Herickhoff, James A.
|
Abstract
The invention discloses a method of solution mining trona by injecting an aqueous solvent into an underground cavity comprising trona to dissolve trona in the aqueous solution and removing the aqueous solution from the cavity at about the WTN triple point (the temperature at which solid phase wegscheiderite, trona, and nahcolite can co-exist in an aqueous solution). Alkaline values from the removed aqueous solution are recovered to produce a barren liquor. The method further includes either (i) treating the barren liquor to produce an aqueous solvent or (ii) treating injected aqueous solvent to reduce clogging at the trona dissolution surface caused by supersaturation of sodium bicarbonate, and precipitation of nahcolite and wegscheiderite as the aqueous solution in the cavity approaches saturation of both dissolved sodium bicarbonate and sodium carbonate.
IPC Classes ?
- E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 43/28 - Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
- E21B 43/34 - Arrangements for separating materials produced by the well
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5.
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Methods for constructing underground borehole configurations and related solution mining methods
| Application Number |
13193995 |
| Grant Number |
08899691 |
| Status |
In Force |
| Filing Date |
2011-07-29 |
| First Publication Date |
2012-02-02 |
| Grant Date |
2014-12-02 |
| Owner |
Sesqui Mining, LLC (USA)
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| Inventor |
- Day, Roger L.
- Herickhoff, James A.
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Abstract
Disclosed are methods for solution mining of evaporite minerals, such as trona, comprising drilling an access well and at least two lateral boreholes; injecting a fluid; circulating the fluid through the lateral boreholes with a controlled fluid flow; and collecting a pregnant solution. Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground trona cavity at a temperature sufficient to maintain at least a portion of the solution in the cavity in the Wegscheiderite solid phase region; removing aqueous solution from the cavity; and recovering alkaline values from the removed aqueous solution. Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground trona cavity; removing aqueous solution from the cavity, wherein the temperature of the removed aqueous solution is at about the TWA point temperature; and recovering alkaline values from the removed aqueous solution.
IPC Classes ?
- E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- C01D 7/00 - Carbonates of sodium, potassium, or alkali metals in general
- C01D 7/12 - Preparation of carbonates from bicarbonates
- E21B 43/28 - Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
- E21B 43/30 - Specific pattern of wells, e.g. optimizing the spacing of wells
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6.
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Methods for constructing underground borehole configurations and related solution mining methods
| Application Number |
11206659 |
| Grant Number |
07611208 |
| Status |
In Force |
| Filing Date |
2005-08-17 |
| First Publication Date |
2006-02-23 |
| Grant Date |
2009-11-03 |
| Owner |
Sesqui Mining, LLC (USA)
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| Inventor |
- Day, Roger L.
- Herickhoff, James A.
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Abstract
Disclosed are methods for solution mining of evaporite minerals, such as trona, comprising drilling an access well and at least two lateral boreholes; injecting a fluid; circulating the fluid through the lateral boreholes with a controlled fluid flow; and collecting a pregnant solution. Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground trona cavity at a temperature sufficient to maintain at least a portion of the solution in the cavity in the Wegscheiderite solid phase region; removing aqueous solution from the cavity; and recovering alkaline values from the removed aqueous solution. Also disclosed are methods of solution mining that include injecting an aqueous solution into an underground trona cavity; removing aqueous solution from the cavity, wherein the temperature of the removed aqueous solution is at about the TWA point temperature; and recovering alkaline values from the removed aqueous solution.
IPC Classes ?
- C01D 7/12 - Preparation of carbonates from bicarbonates
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