CN1300443C - Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal - Google Patents
Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal Download PDFInfo
- Publication number
- CN1300443C CN1300443C CNB2004100049137A CN200410004913A CN1300443C CN 1300443 C CN1300443 C CN 1300443C CN B2004100049137 A CNB2004100049137 A CN B2004100049137A CN 200410004913 A CN200410004913 A CN 200410004913A CN 1300443 C CN1300443 C CN 1300443C
- Authority
- CN
- China
- Prior art keywords
- pressure
- well
- bal
- water
- target well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present relates to an aqueous-solution exploitation method of group-well fracture pressure steeping control of a glauberite bal, which belongs to the exploitation field of a salt deposit. The the prior art usually adopts an aqueous-solution exploitation method to the salt deposit, and due to the poor solution of a glauberite bal, the general steeping and dissolving exploitation method of using a tunnel to excavate a chamber has large labor intensity, high exploitation cost, dangerous working environment, low recovery rate and severe environmental pollution. The present invention adopts a method of controlling water-pressure fracturing to communicate a plurality of wells arranged in a bal bed, water is injected to the bal bed through high pressure under the condition of not discharging the water, the bal bed is steeped and dissolved for a long time by pressure and then is discharged out of the ground after achieving the required brine concentration, secondary water-injection steeping and secondary bittern discharge are then carried out, and the steps are circulated until the exploitation is accomplished. The exploitation method of the present invention has the characteristics of group-well fracturing, pressure steeping and aqueous-solution control, and is an ideal scheme for exploitating insoluble salt deposits, such as the glauberite bal, etc.
Description
Technical field:
The invention belongs to the exploitation category of underground indissoluble salt deposit, be particularly suitable for the exploitation of glauberite, is a kind of multi-well fracture of glauberite, the exploitation method that pressure soaks, control is water-soluble.
Background technology:
The exploitation of underground salt deposit, adopting more at present is the solution mining method.By " drilling hydraulic mining fixed-point producing method for salt deposit " of " the saltcake exploitation method " of CN1069732C bulletin, CN1009383B bulletin as can be known, prior art is to the normal solution mining method that adopts of the exploitation of salt deposit, mainly contains individual well convection current method, the convection current of twin-well hydraulic pressure burst communicatin or the orientation convection current method etc. that is docked and connected.These methods exist the rate of extraction low, the shortcoming that cost of winning is high.' group well cracking controlled water-soluble recovery method for saline minerals bed ' of CN 1399058A bulletin has rate of extraction height, and cost of winning is low, the efficient advantages of higher.But it is only applicable to the salt deposit of Yi Rong, and is then inapplicable for insoluble salt deposit, for example glauberite.
Glauberite belongs to an insoluble class salt deposit, up to the present, adopts tunnel excavation chamber to soak the exploitation method of dissolving always.This exploitation method is to reach ore body by excavation tunnel, ground, uses the method for concentrated demolition to form a large-scale prose style free from parallelism ore deposit cave in ore body, soaks the dissolving ore when water filling is long then, when solution concentration reaches requirement, can extract soil surface treatment out.The exploitation method labour intensity that tunnel excavation chamber soaks is big, cost of winning is high, operating environment is dangerous, the rate of extraction is low; Simultaneously, because the mineral that the tunnel excavates out are deposited in ground, can cause severe contamination to environment.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that above-mentioned tunnel excavation chamber soaks the solution mining method, the solution mining method of the glauberite of a kind of low cost, the high rate of extraction, high efficiency, economic environmental protection is provided.
The present invention is achieved through the following technical solutions its purpose:
The solution mining method that glauberite multi-well fracture controlled pressure soaks the steps include:
(1) in the mineral deposit, arranges, creeps into a plurality of water injection wells, target well simultaneously;
(2) water injection well, target well are selected in the well cementation back, carry out the water filling pressure break with high-pressure hydraulic pump by water injection well, are communicated with the target well;
(3) after group wells is communicated with, under the condition of not draining, in the mineral deposit, inject water under high pressure, carry out controlled pressure and soak dissolving;
(4) after pressure soaks dissolving a period of time, open the target well array and go out bittern;
(5) after row's halogen finishes, carry out the secondary water injection pressure and soak;
(6) after pressure soaks dissolving a period of time, open target well secondary row again and take out bittern; Being circulated to ore bed with this has adopted.
In the described step (1), arrange, creep into many wells simultaneously in the mineral deposit, its well spacing deposits feature on the mineral deposit tax and geological conditions is decided, and generally is no more than 100m.
In the described step (2), carrying out the water filling pressure break with high-pressure hydraulic pump by water injection well, be communicated with the target well, is to reach connection between many wells by regulating, close the target well.
In the described step (3), carry out pressure and soak dissolving, it injects the vertical stress of the pressure of fresh water more than or equal to ore bed.
In the described step (3), carry out pressure and soak dissolving, can be by alternate water injection between group wells, draw water and implement uniform dissolution.
In the described step (3), pressure soaks the time of dissolving, is to determine by detecting quiet concentration of aqueous solution after molten.
In the described step (4), opening the target well array and go out bittern, is to arrange certainly by the target well earlier, extracts high concentration bittern by the mode of pump drainage then.
In the described step (1), arranging, creep into a plurality of water injection wells, target well simultaneously in the mineral deposit, is large aperture and small-bore arranged crosswise, to satisfy the technological requirement of water filling and pump drainage water.
Owing to arrange many wells in the glauberite mineral deposit, can select close central a bite or several mouthfuls of wells as water injection well (fractured well), all the other all are the target well, thereby implement the group wells hydraulic pressure burst communicatin; The group wells hydraulic pressure burst communicatin forms after the well pattern, injects the long-time pressure of water under high pressure therein and soaks, and under pressure the aqueous solution is fully immersed glauberite ore body, fully dissolving; After pressure soaks a period of time, can carry out the discharging of high concentration bittern; Re-inject water under high pressure afterwards, carry out secondary, repeatedly pressure immersion solution mining, the whole solution minings of ore body finish in this section.The exploitation method of dissolving is soaked, is controlled in so circulation, enforcement to multi-well fracture, the pressure of glauberite ore bed.The present invention compares with existing tunnel excavation chamber immersion process, owing to utilize the principle of pressure permeation, glauberite is fully soaked dissolving, increased the corrosion area of mineral, improved the dissolution velocity of mineral, therefore, can reach glauberite low cost, the high rate of extraction, high efficiency exploitation; What is more important adopts ground multi-well fracture technology, can guarantee the uniform dissolution of ore bed, evenly sinking; Simultaneously, a series of problems such as land occupation, environment pollution of pit mining ground dump leaching dissolving have been avoided.It is the ideal scheme of indissoluble salt deposit minings such as glauberite.
Description of drawings:
Fig. 1: control solution mining well pattern arrangement diagram;
Label among the figure: 0---water injection well, 1～4---the target well.
Fig. 2: pressure soaks schematic diagram.
Label among the figure: 0---water injection well, 1,3---the target well, 5---ore body, 6---the ore body micro-crack, 7---hydraulically created fracture.
The specific embodiment:
Shown in figure 1,2,
A kind of glauberite multi-well fracture controlled pressure soaks solution mining method, the steps include:
(1) according to geologic information, at the physico mechanical characteristic of determining ore bed and after burying feature,, select rational well spacing (100m), well location according to the drilling technology code requirement, arrange No. 0, No. 1, No. 2, No. 3, No. 4 wells of well pattern (this well pattern is by 5 mouthfuls of well constructions), implement drilling well;
(2) after open hole was finished, setting of casing was cemented the well accordingly according to code requirement;
(3) after all well completions and the well cementation, select No. 0 well of central authorities as water injection well (fractured well), No. 1, No. 2, No. 3, No. 4 wells are as the target well, implement fracturing with high-pressure hydraulic pump by No. 0 well of central authorities, be communicated with for No. 1, No. 2, No. 3, No. 4 with the target well, by regulating or close the target well of connection, can reach while or connection in succession between many wells;
(4) after the connected well net forms, in the mineral deposit, annotate water under high pressure, (decide according to geological conditions and rock strength characteristic, generally the stress σ of pressure P 〉=vertically when pressure reaches certain value
Min) after, the pressure that closing well carries out glauberite soaks dissolving;
(5) after soaking dissolving certain hour (time at initial stage is short, the later stage is longer), open target well (producing well) and arrange halogen;
(6) after row's halogen finishes, carry out the secondary water injection pressure and soak;
(7) after pressure soaks quiet molten a period of time, open target well secondary row again and take out bittern, circulate, adopted to ore bed with this.
Claims (7)
1, a kind of glauberite multi-well fracture controlled pressure soaks solution mining method, and it is characterized in that: the step of described exploitation method is:
(1) in the mineral deposit, arranges, creeps into a plurality of water injection wells, target well simultaneously;
(2) water injection well, target well are selected in the well cementation back, carry out the water filling pressure break with high-pressure hydraulic pump by water injection well, are communicated with the target well;
(3) after group wells is communicated with, under the condition of not draining, in the mineral deposit, inject water under high pressure, carry out controlled pressure and soak dissolving;
(4) after pressure soaks dissolving a period of time, open the target well array and go out bittern;
(5) after row's halogen finishes, carry out the secondary water injection pressure and soak;
(6) after pressure soaks dissolving a period of time, open target well secondary row again and take out bittern; Being circulated to ore bed with this has adopted.
2, according to the described solution mining method of claim 1, it is characterized in that: in the described step (2), carrying out the water filling pressure break with high-pressure hydraulic pump by water injection well, be communicated with the target well, is to reach connection between many wells by regulating, close the target well.
3, according to the described solution mining method of claim 1, it is characterized in that: in the described step (3), carry out pressure and soak dissolving, it injects the vertical stress of the pressure of fresh water more than or equal to ore bed.
4, according to the described solution mining method of claim 1, it is characterized in that: in the described step (3), carry out pressure and soak dissolving, can be by alternate water injection between group wells, draw water and implement uniform dissolution.
5, according to the described solution mining method of claim 1, it is characterized in that: in the described step (3), pressure soaks the time of dissolving, is to determine by detecting quiet concentration of aqueous solution after molten.
6, according to the described solution mining method of claim 1, it is characterized in that: in the described step (4), opening the target well array and go out bittern, is to arrange certainly by the target well earlier, extracts high concentration bittern by the mode of pump drainage then.
7, according to the described solution mining method of claim 1, it is characterized in that: in the described step (1), arranging, creep into a plurality of water injection wells, target well simultaneously in the mineral deposit, is large aperture and small-bore arranged crosswise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100049137A CN1300443C (en) | 2004-02-09 | 2004-02-09 | Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100049137A CN1300443C (en) | 2004-02-09 | 2004-02-09 | Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1558086A CN1558086A (en) | 2004-12-29 |
| CN1300443C true CN1300443C (en) | 2007-02-14 |
Family
ID=34350816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100049137A Expired - Fee Related CN1300443C (en) | 2004-02-09 | 2004-02-09 | Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1300443C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041988B (en) * | 2009-10-16 | 2013-09-04 | 中国地质科学院矿产资源研究所 | Multistage driving ore dissolving method for salt mine exploitation |
| CN102191932A (en) * | 2011-04-08 | 2011-09-21 | 太原理工大学 | In-situ heat injection steeping control aqueous dissolution exploitation method of glauberite ore |
| CN102418524A (en) * | 2011-09-22 | 2012-04-18 | 秦勇 | Novel technology of underground in-situ boring leaching mining |
| CN102877782A (en) * | 2012-09-27 | 2013-01-16 | 三一重工股份有限公司 | Rotary drilling rig and bittern collecting method |
| CN103696751A (en) * | 2013-12-12 | 2014-04-02 | 内蒙古奥利星煤化集团有限责任公司 | Method for mining underground sodium sulfate decahydrate by drilling hot water dissolving |
| CN104481541B (en) * | 2014-11-27 | 2017-02-22 | 中盐勘察设计院有限公司 | One-inclined multi-vertical cascaded well group salt mine mining method |
| CN104847327B (en) * | 2015-03-24 | 2018-01-12 | 陈建明 | A kind of dull nugget second working method |
| CN108195096A (en) * | 2018-01-03 | 2018-06-22 | 西南石油大学 | A kind of underground heat insinuating language well construction |
| CN112177586B (en) * | 2020-09-26 | 2022-09-16 | 陕西省煤田地质集团有限公司 | Polyhalite in-situ roasting exploitation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246273A (en) * | 1991-05-13 | 1993-09-21 | Rosar Edward C | Method and apparatus for solution mining |
| US5690390A (en) * | 1996-04-19 | 1997-11-25 | Fmc Corporation | Process for solution mining underground evaporite ore formations such as trona |
| CN1069732C (en) * | 1999-05-15 | 2001-08-15 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| CN1399058A (en) * | 2002-08-09 | 2003-02-26 | 太原理工大学 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
-
2004
- 2004-02-09 CN CNB2004100049137A patent/CN1300443C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246273A (en) * | 1991-05-13 | 1993-09-21 | Rosar Edward C | Method and apparatus for solution mining |
| US5690390A (en) * | 1996-04-19 | 1997-11-25 | Fmc Corporation | Process for solution mining underground evaporite ore formations such as trona |
| CN1069732C (en) * | 1999-05-15 | 2001-08-15 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| CN1399058A (en) * | 2002-08-09 | 2003-02-26 | 太原理工大学 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1558086A (en) | 2004-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101581231B (en) | Gas drainage method for loosening coal body through cross layer boring and hydraulic fracture | |
| CN1300443C (en) | Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal | |
| RU2312210C1 (en) | Acid treatment method for bottomhole zone of formation having carbonate reservoir | |
| RU2312212C1 (en) | Development method for oil field with carbonate reservoir | |
| CN106089291B (en) | A kind of method for cooperateing with extraction to be caving the old dead zone of formula and lower coal seam coal bed gas | |
| CN108708704B (en) | Method for reducing filtration loss of coal bed gas reservoir | |
| CN113503150B (en) | Bauxite in-situ leaching exploitation method | |
| CN114183118B (en) | Enhanced-permeability in-situ leaching mining method and device for hyposmosis sandstone uranium ores and terminal equipment | |
| CN103726848B (en) | Be applicable to the mining methods of recovery of gentle-inclined/inclthin thin ore body | |
| CN103161492A (en) | Gas extraction well location method based on overlying rock fracture shell | |
| CN112227985A (en) | Ultra-deep salt mine butt-joint well bittern-mining full-horizontal-section groove expanding method | |
| CN111764960A (en) | Coal mining separation layer water damage prevention and control method | |
| CN102191932A (en) | In-situ heat injection steeping control aqueous dissolution exploitation method of glauberite ore | |
| CN1184407C (en) | Group well cracking controlled water-soluble recovery method for saline minerals bed | |
| RU2732905C1 (en) | Method for repeated hydraulic fracturing in horizontal wells | |
| CN103032059A (en) | Directional hydraulic fracturing connected mining method | |
| RU2754232C1 (en) | Method for constructing an underground tunnel reservoir in a rock salt reservoir of limited capacity | |
| CN101476460A (en) | Deep-thin layer natural alkali, salt and saltpeter well-to-well multi-layer connection exploitation process | |
| RU2285794C1 (en) | Well bottom zone treatment method | |
| SU1693264A1 (en) | Method of drainage of satellite seams | |
| SU1439264A1 (en) | Method of by-interval hydraulic treatment of coal-rock mass | |
| CN112211607A (en) | Shale gas horizontal well fracturing vertical reconstruction volume control method | |
| SU1643735A1 (en) | Method for hydraulically working productive strata | |
| RU2258652C1 (en) | Method for underground tunnel reservoir building in rock salt bed having limited thickness | |
| CN114510757B (en) | Acid fracturing transformation process method for tracking and locating holes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20100209 |