CN1564904A - Apparatus, method and system for single well solution-mining - Google Patents

Apparatus, method and system for single well solution-mining Download PDF

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Publication number
CN1564904A
CN1564904A CNA028197968A CN02819796A CN1564904A CN 1564904 A CN1564904 A CN 1564904A CN A028197968 A CNA028197968 A CN A028197968A CN 02819796 A CN02819796 A CN 02819796A CN 1564904 A CN1564904 A CN 1564904A
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mixture
underground
pit shaft
fluid
elbow
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CNA028197968A
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Chinese (zh)
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N·布朗
K·尼塞尔罗德
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Anadarko Petroleum Corp
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Anadarko Petroleum Corp
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/28Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent

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  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Earth Drilling (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The claimed invention is a method, system and apparatus for solution-mining of subterranean materials such as trona, nahcolite, thermonatrite, pirssonite, natron, dawsonite, wegscheiderite, gaylussite, shortite, halite, and other salts, minerals, and so forth. The method comprises injecting a fluid into an elbow well, the fluid forming a subterranean mixture with the subterranean material, and collecting the subterranean mixture from the elbow well. The system comprises a means for injecting a fluid into an elbow well, the fluid forming a subterranean mixture with the subterranean material, and a means for collecting the subterranean mixture from the elbow well. The apparatus further comprises a production casing, wherein the production casing has a production casing inner diameter of sufficient size to allow for production of a subterranean mixture of the fluid and the subterranean material between an outer surface of the injection tube and an inner surface of the production casing.

Description

The device, the method and system that are used for the individual well solution mining
Technical field
The present invention relates to the solution mining of subsurface materials.Below the described solution mining invention that is applied to exploit trona is discussed, but the invention of this solution mining can be applicable in the exploitation of all subsurface materials.
Background technology
Subsurface materials trona is also referred to as natural soda, is exactly the crystalline solid form of sodium carbonate and sodium acid carbonate, also is called bicarbonate three and receives, and its molecular formula is Na 2CO 3NaHCO 32H 2O.Worldwide, native soda deposit is very rare, and still, known in the world maximum mineral deposit is positioned at the Green River Basin in the west and south, the U.S. Wyoming State.Near the Memphis of Egypt and downstream, valley, the Nile (Lower Nile Valley) and in the alkaline desert in all alkali lakes of Africa, America and Iran and Mongolia and Tibet, found the native soda deposit that scale is less.The main final products of trona are exactly soda ash.In fact, the soda ash that handled the Wyoming State accounts for 90% of U.S.'s total output, accounts for 30% of world's supply.Other final products of trona comprise sodium acid carbonate, caustic soda, sodium sulfite, Cymag and sodium phosphate.Need provide a kind of is used for from the modified and the low cost method of natural mineral deposit exploitation trona.
Mining is a kind of ancient method that is used to separate subsurface materials, for example trona, nahcolite, dawsonite, wegscheiderite, scale, pirssonite, natron, geylussite, shortite, rock salt and other salt, mineral etc.But commercial back production can not be carried out in the mineral deposit of many subsurface materials, and can only pass through underground mechanical mining or solution-mining.For example, the known native soda deposit of less than 10% can carry out business-like underground mechanical mining, and the solution mining of trona is uneconomical.
Underground mechanical mining need be dug out many deep-wells, subsurface materials can be taken out like this, exploits more material if desired, so just needs to excavate darker mine.In addition, the labour intensity of mechanical mining is very big.And the operating environment of mechanical mining is danger close also.
With material lift behind ground, need carry out enure to material and handle, to remove volatile composition, for example carbon dioxide.Enure is the high treatment process of a kind of energy consumption, and this treatment process affects the economy of mechanical mining.Behind the enure, the material of process enure carries out crystallization again in the aqueous solution, and it is collected in together, dries, in order to it is further handled or transportation.
Solution mining is the alternative method of mechanical mining, but verified: solution mining does not have required economy.The solution mining of the solution mining of subsurface materials, especially trona can utilize hot water or alkaline solution.For example, U.S. Patent No. 2388009 (Pike) discloses hot water or hot carbonate solution has been used as production fluid.Also can be referring to U.S. Patent No. 2625384 (people such as Pike), 2847202 (Pullen), 2979315 (Bays), 3018095 (Redlinger), 3050290 (people such as Caldwell), 3086760 (Bays) and U.S. Patent No. 3184287 (Gancy), 3405974 (people such as Handley), U.S. Patent No. 3952073 (Kube), U.S. Patent No. 4283372 (people such as Frint), 4288419 (people such as Copenhafer) and U.S. Patent No. 4344650 (people such as Pinsky), the content of these documents refers to herein as a reference.These contents and the disclosed solution mining method of other document disclosed adopt following two or more influence the economic drain factor of commercial viability: HTHP is calcined, hydraulic frtacturing (" Splitting Method ") and two well heads, one of them well head is used for injection, another well head is used for producing, referring to the U.S. Patent No. 4815790 that licenses to people such as Rosar; License to people's such as Pinsky U.S. Patent No. 4344650; License to people's such as Fujita U.S. Patent No. 4252781; License to people's such as Poncha U.S. Patent No. 4022868; License to people's such as Gancy U.S. Patent No. 4021526; With the U.S. Patent No. 4021525 that licenses to people such as Poncha, the content of these documents refers to herein as a reference.The material that Splitting Method only will need to exploit under situation is seldom crushed, and inject hot water or alkaline solution and dissolve other material, comprises salt and pollutant, and pollutes the subsurface materials product of collecting in production wellhead.It is another economic drain that influences the commercial viability of solution mining method that contaminated subsurface materials is collected.
Except can utilizing the solution mining method to exploit the trona, some United States Patent (USP)s also disclose and have utilized solution mining method exploitation nahcolite (main component is NaHCO 3) method.For example, U.S. Patent No. 3779602 people such as () Beard, U.S. Patent No. 3792902 people such as () Towell, U.S. Patent No. 3952073 (Cube) and U.S. Patent No. 4283372 people such as () Frint all disclose and have utilized alkaline solution mining method exploitation nahcolite and wegscheiderite (main component is Na 2CO 33NaHCO 3), these documents refer to herein as a reference.But the same with the solution mining method of trona, the dissolving stoping method of these nahcolites and wegscheiderite also has the economic drain of commercial viability.
Therefore, just need utilize improved, effective method and system come underground material is carried out improved solution mining more.
Summary of the invention
The present invention is a kind of mthods, systems and devices that underground material carried out solution mining.According to a first aspect of the invention, a kind of method that is used for underground material is carried out solution mining is provided, this method comprises: inject a fluid in the elbow pit shaft, fluid and subsurface materials have formed a kind of underground mixture, and the underground mixture in the elbow pit shaft is collected.According to a further aspect in the invention, a kind of system that is used for underground material is carried out solution mining is provided, this system comprises: one is used for a kind of fluid is injected into a device in the elbow pit shaft, this fluid and subsurface materials have formed a kind of underground mixture and one and have been used for the collected device of the subsurface materials in the elbow pit shaft.According to another aspect of the invention, provide a kind of device that is used for underground material is carried out solution mining, this device comprises: an injection-tube, wherein this injection-tube has enough big internal diameter, can inject the used fluid of recovery of subterranean material.This device also comprises a production casing, and wherein this production casing has enough big internal diameter, can produce the underground mixture of fluid and subsurface materials between the inner surface of the external surface of injection-tube and production casing.
Description of drawings
Fig. 1 is the schematic diagram that pierces the elbow setting of casing pit shaft in the subsurface materials rock stratum, wherein the elbow pit shaft comprises an injection-tube, production casing and a production casing that is connected with a pump, be beneficial to the underground mixture in the cavity is risen to an assembling position, in this article, this assembling position is exactly ground.
Fig. 2 is the sectional view of the initial cavity in the elbow pit shaft.
Fig. 3 is the sectional view of the cavity in the elbow pit shaft, and wherein this cavity is greater than cavity shown in Figure 2.
Fig. 4 is the sectional view of the cavity in the elbow pit shaft, and wherein this cavity is greater than cavity shown in Figure 3.
Detailed description to the embodiment of the invention
Solution mining disclosed in this invention is a kind of device, method and system that is used for underground material is carried out solution mining, and subsurface materials for example can be trona, nahcolite, dawsonite, wegscheiderite, scale, pirssonite, natron, geylussite, shortite, rock salt and other salt, mineral etc.Carry out although these detailed explanations mainly are the trona at subsurface materials, be appreciated that described device, the method and system that is used for solution mining is applicable to the subsurface materials of all solubilized exploitations.
In one embodiment of the invention, as shown in Figure 1, on the mineral deposit 30 of the subsurface materials 25 of just being exploited, be drilled with an elbow pit shaft 15.Elbow pit shaft 15 is pit shafts that originate in ground 70, and this pit shaft is at first vertically boring before along continuous straight runs boring.Although elbow pit shaft 15 needn't be similar with the mankind's ancon shape, a final steering horizontal part of vertical component is arranged.For trona, the mining depth that estimates 160 is ground 70 following 2000 feet.Injection-tube 45 and production tube 60a are arranged in the elbow pit shaft 15, have wherein adopted in an example of injection-tube 45 J55 type pipeline, but in not departing from scope of the present invention, those skilled in the art also can adopt the pipeline of other size and model.A kind of fluid 10 is injected in the injection-tube 45, and wherein fluid 10 reacts with subsurface materials 25, has generated a kind of mixture 55 (for example a kind of solution) and a cavity 50.Mixture 55 flows between injection-tube 45 and production casing 60b.In another embodiment, a pump 140 is connected with production tube 60a, is beneficial to mixture 55 is risen to bleeding point 65 (assembling position is exactly ground 70) here.
In many embodiment of the present invention, need not to adopt frac treatment, because injection-tube 45, production casing 60b and production tube 60a are positioned at same pit shaft 15.In certain embodiments, the straight length 155 of elbow pit shaft 15 in the mineral deposit 30 of subsurface materials 25 is greater than 3000 feet.
According to another embodiment of the present invention, see Fig. 2-4, when more fluid 10 is injected in the pit shaft 15, thereby when making more subsurface materials 25 produce dissolving, cavity 50 is expansion gradually.This cavity 50 is outwards expanded from the end of elbow pit shaft 15, and like this, cavity 50 will be towards pit shaft 15 inverse expansion.If the avalanche of cavity 50 or other obstruction have reduced the flow of mixture 55, so in certain embodiments, just need on injection-tube 45, punch, can collect more mixture 55.Perhaps, not with punching, but injection-tube 45 parts are extracted out, clean out up to the landwaste at the place that will cave in, and the flow of mixture 55 is brought up to the level of permission.
Operation with high pressure may make material 25 in the mixture 55 just discharge before in being collected into subsurface materials mixture 55.But the low voltage operated total collection that can reduce subsurface materials 25 again is because cavity 50 may cave in prematurely.For avoiding occurring these problems, just need observe the selection of wellbore pressure.At present, except test and error, can make this selection without any known empirical method.But can believe: following pressure and flow velocity are acceptable for trona at least: the degree of depth is 2000 feet, and the pressure in the cavity 50 is 800-900 pound/inch (psi), and flow velocity is 200-300 gallon per minute (gal/min).
In another embodiment of the present invention, subsurface materials 25 can be chosen from the material that mainly comprises following compositions: trona, dawsonite, wegscheiderite, nahcolite, scale, pirssonite, natron, geylussite, shortite, rock salt and other salt, mineral etc.
In different embodiment, fluid 10 can be chosen from the material that mainly comprises following compositions: water, corrosivity mixture, sodium carbonate liquor, thereby or other any can the fluid 10 that machineries and/or chemical reaction are produced the mixture 55 that can take out in the production casing 60b by production tube 60a take place with subsurface materials to be exploited 25.Such fluid 10 is conspicuous for a person skilled in the art.In certain embodiments, this fluid 10 heats.
In another embodiment, mixture 55 for example can be raised out by the pump action of the pump 140 that links together with production casing 60a, and mixture 55 is delivered to assembling position 65, for example is delivered to ground 70.According to an embodiment, qualified pump 140 comprises electronic submerged centrifugal pump, for example the pump of being made by Baker Hughes Centrilift company 140.In addition, pump 140 is installed in 30 tops, mineral deposit of subsurface materials 25, promptly is arranged on the mining area top.For example, for trona, pump 140 can be positioned in the elbow pit shaft 15 at about 1100 feet places, 70 belows, ground in certain embodiments.Other pump 140 that can be applicable among the present invention comprises the piston pump that is driven by the pump rod on the ground 70.Those skilled in the art also can adopt other to can be applicable to pump 140 among the present invention.
Embodiments of the invention have been made explanation above, but should be clear: and those skilled in the art can make various distortion, modification and improvement to the present invention.Though do not described in detail hereinbefore, these distortion, modification and improvement still fall within the scope of protection of the present invention.Therefore, foregoing only is illustrative, is not to be restrictive; The present invention is only limited and is limited by appending claims and equivalent thereof.

Claims (39)

1, a kind of method that underground material is carried out solution mining, this method comprises:
A kind of fluid is expelled in the elbow pit shaft, and this fluid and subsurface materials have formed a kind of underground mixture; With
Underground mixture in the elbow pit shaft is collected.
2, according to the method for claim 1, it is characterized in that: described subsurface materials comprises trona.
3, according to the method for claim 1, also comprise: make an elbow pit shaft.
4, according to the method for claim 3, it is characterized in that: the step of described manufacturing elbow pit shaft is included in the mineral deposit that comprises subsurface materials and gets out an elbow pit shaft.
5, according to the method for claim 1, it is characterized in that: described method comprises the cased step of described elbow pit shaft.
6, according to the method for claim 1, it is characterized in that: the step of described injecting fluid also comprises this fluid is expelled to an injection-tube that is positioned at the elbow pit shaft.
7, according to the method for claim 1, it is characterized in that: described method also comprises the step that forms a cavity, and wherein said cavity comprises subsurface materials.
8, according to the method for claim 7, it is characterized in that: after finishing the step of described injecting fluid, described cavity comprises the mixture of subsurface materials.
9, according to the method for claim 1, it is characterized in that: described underground mixture comprises a kind of underground solution.
10, according to the method for claim 1, it is characterized in that: described fluid comprises water.
11, according to the method for claim 1, it is characterized in that: described fluid comprises a kind of corrosivity mixture.
12, according to the method for claim 1, it is characterized in that: described method also comprises the step that convection cell heats.
13, according to the method for claim 1, it is characterized in that: the step of the underground mixture of described collection also comprises by a production tube that is arranged in the elbow pit shaft collects underground mixture.
14, according to the method for claim 1, it is characterized in that: the step of the underground mixture of described collection comprises carries out pumping to underground mixture.
15, according to the method for claim 14, it is characterized in that: the described step that underground mixture is carried out pumping comprises by production tube and promotes described underground mixture.
16, according to the method for claim 15, it is characterized in that: described method also comprises described underground mixture is delivered to an assembling position.
17, according to the method for claim 16, it is characterized in that: described assembling position comprises ground.
18, according to the method for claim 14, it is characterized in that: described method also comprises a pump is placed in the elbow pit shaft.
19, according to the method for claim 1, it is characterized in that: described method is implemented under the condition that the environment well is pressed.
20, according to the method for claim 1, it is characterized in that: described method also comprises: after collecting described subsurface materials underground mixture is handled.
21, a kind of system that is used for underground material is carried out solution mining, this system comprises:
Be used for a kind of fluid is injected into a device in the elbow pit shaft, this fluid and subsurface materials have formed a kind of underground mixture; With
Be used to collect the device of the underground mixture in the elbow pit shaft.
22, according to the system of claim 21, it is characterized in that: described subsurface materials comprises trona.
23, according to the system of claim 21, also comprise the device that is used to make described elbow pit shaft.
24, according to the system of claim 23, it is characterized in that: the described device that is used to make the elbow pit shaft comprises and is used for described elbow pit shaft is pierced a device in the mineral deposit that comprises subsurface materials.
25, according to the system of claim 21, it is characterized in that: described system comprises and being used for the cased device of described elbow pit shaft.
26, according to the system of claim 21, it is characterized in that: the described device that is used for injecting fluid also comprises an injection-tube that is arranged in the described elbow pit shaft.
27, according to the system of claim 21, it is characterized in that: described underground mixture comprises a kind of underground solution.
28, according to the system of claim 21, it is characterized in that: described fluid comprises water.
29, according to the system of claim 21, it is characterized in that: described fluid comprises a kind of corrosivity mixture.
30, according to the system of claim 21, it is characterized in that: described system also comprises and is used for device that described fluid is heated.
31, according to the system of claim 21, it is characterized in that: the described device that is used to collect underground mixture comprises the device that is used for the described underground mixture of pumping.
32, according to the system of claim 31, it is characterized in that: described system also comprises and is used for a pump is placed in device in the described elbow pit shaft.
33, according to the system of claim 31, it is characterized in that: described system also comprises and is used for underground mixture is transported to a device on the assembling position.
34, according to the system of claim 33, it is characterized in that: described assembling position comprises ground.
35, according to the system of claim 21, it is characterized in that: described system implements under the condition that the environment well is pressed.
36, according to the system of claim 21, it is characterized in that: described system also is included in the device of underground mixture being handled after the described device that is used to collect underground mixture.
37, a kind of device that is used for underground material is entered solution mining, this device comprises:
An injection-tube, wherein the internal diameter size of this injection-tube is enough big, can inject the used fluid of a kind of recovery of subterranean material; With
A production casing, wherein the internal diameter size of this production casing is enough big, producing the underground mixture of being made up of described fluid and subsurface materials between the inner surface of the external surface of injection-tube and production casing.
38, according to the device of claim 37, also comprise: a production tube that is used to collect underground mixture.
39, according to the device of claim 38, also comprise: a pump that is connected with described production passage.
CNA028197968A 2001-08-09 2002-08-09 Apparatus, method and system for single well solution-mining Pending CN1564904A (en)

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US09/925,788 US20030029617A1 (en) 2001-08-09 2001-08-09 Apparatus, method and system for single well solution-mining

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WO (1) WO2003015025A2 (en)

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CN101313126B (en) * 2005-10-24 2013-01-16 国际壳牌研究有限公司 Solution mining systems and methods for treating hydrocarbon containing formations
CN102906365A (en) * 2010-03-25 2013-01-30 布鲁斯·A·塔盖特 Pressure controlled well construction and operation systems and methods usable for hydrocarbon operations, storage and solution mining
CN102906365B (en) * 2010-03-25 2015-11-25 布鲁斯·A·塔盖特 Pressure controlled wellbore structure and operating system and can be used for the method for hydrocarbon operation, storage and solution exploitation
CN102022113A (en) * 2010-11-16 2011-04-20 重庆大学 Test method for monitoring stresses of flow field and interlayer during cavity constructing period of oil depot
CN102022113B (en) * 2010-11-16 2013-04-17 重庆大学 Test method for monitoring stresses of flow field and interlayer during cavity constructing period of oil depot
CN102418524A (en) * 2011-09-22 2012-04-18 秦勇 Novel technology of underground in-situ boring leaching mining
CN104420875A (en) * 2013-09-09 2015-03-18 韩国地质资源研究院 Circulating Solution Mining Device And Method
CN104420875B (en) * 2013-09-09 2017-04-12 韩国地质资源研究院 Circulating Solution Mining Device And Method

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US20060138853A1 (en) 2006-06-29

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