CN1184407C - Group well cracking controlled water-soluble recovery method for saline minerals bed - Google Patents
Group well cracking controlled water-soluble recovery method for saline minerals bed Download PDFInfo
- Publication number
- CN1184407C CN1184407C CNB021353565A CN02135356A CN1184407C CN 1184407 C CN1184407 C CN 1184407C CN B021353565 A CNB021353565 A CN B021353565A CN 02135356 A CN02135356 A CN 02135356A CN 1184407 C CN1184407 C CN 1184407C
- Authority
- CN
- China
- Prior art keywords
- well
- wells
- bed
- water
- group
- 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
Abstract
The present invention relates to a group-well cracking-controlled water-soluble recovery method for a saline mineral bed, which belongs to the recovery field of an underground saline mineral bed. The method is characterized in that: (1), the hydraulic cracking communication among group wells is implemented in the saline mineral bed; (2), in a production process, water feeding wells and water discharging wells can be regulated and controlled according to crack width b(b=0.1688*) of a dissolving cavity, the crack width is calculated through the pressure difference h(cm water column) of the water feeding wells and water discharging wells and the distance L(cm) of the wells, and therefore, the method implements control dissolution to the saline mineral bed, and ensures the uniform dissolution of the saline mineral bed and even the uniform sinking (determined by the geological condition and the environment of ground stress). The method achieves the recovery with low cost, high recovery rate, high efficiency, economy and environmental protection to the saline mineral bed.
Description
Technical field:
Group well cracking controlled water-soluble recovery method for saline minerals bed belongs to underground salt deposit exploitation category, is a kind of solution mining method of group wells hydraulic pressure burst communicatin control dissolving.
Background technology:
What the exploitation of underground salt deposit employing at present was more is the solution mining method, by Chinese patent publication number 1069732 mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole, Chinese patent publication number 87100161 drilling hydraulic mining fixed-point producing method for salt deposit and Wang Qingming " development of drilling solution mining technology and prospect " (" research of salt industry history " 2001 № .1) as can be known, the solution mining method that adopts at present has: 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.But, all these methods are little or be communicated with reasons such as success rate is low owing to the ore bed dissolved area, all exist deficiencies such as cost of winning height, the rate of extraction are low, serious waste of resources, utilization condition harshness, simultaneously, because the destruction of underground mining Rock-salt Cavity is also brought some environmental hazard problems such as subsidence.
Summary of the invention:
The purpose of group well cracking controlled water-soluble recovery method for saline minerals bed of the present invention; be to overcome the deficiency of above-mentioned solution mining method; be the cost of production that reduces the salt mine exploitation, the sustainable development that improves the mining deposits rate of extraction, protection mining deposits, maintenance resources economy, thereby the underground salt mine exploitation method of a kind of low cost, the high rate of extraction, high efficiency, economic environmental protection openly is provided.
Group well cracking controlled water-soluble recovery method for saline minerals bed of the present invention is characterized in that: arrange many wells simultaneously in salt deposit, select close central a bite or several mouthfuls of wells as fractured well, all the other all are the target well, implement the group wells hydraulic pressure burst communicatin; Group wells be communicated with to form after the well pattern, begins to produce bittern, and central former fractured well fresh waterflood, former target well all goes out halogen on every side; In process of production, according to the notes, wet well head pressure reduction h (cm water column) and the well spacing L (cm) that measure gained, calculate each at any time to outpouring the crack width in molten chamber between well
When the b value equals 10cm, turn down or close this convection current well, allow remaining outpour well production; When last also reaches setting to the crack width b that outpours well, all open wet well once more, carry out pressure monitoring, (molten chamber collapses and falls the heavy 10cm that is molten chamber crack width according to the rules, molten chamber keeps stabilizing to n*10cm, and n is for all opening and closing cycle-indexes) open and close and outpour well and regulate.The control dissolving to the rock salt ore bed is implemented in so circulation, can guarantee the uniform dissolution of rock salt ore bed, even evenly sink (deciding on geological conditions and ground stress environment), reaches the exploitation to salt mineral reserve low cost, the high rate of extraction, high efficiency, economic environmental protection.
Its concrete step of implementing is:
I. according to geologic information,,, implement well pattern and arrange and drilling well according to the drilling technology code requirement at the physico mechanical characteristic of determining ore bed and after burying feature;
II. after open hole was finished, setting of casing was cemented the well accordingly according to code requirement;
III. after all well completions and the well cementation, select water injection well, target well, carry out the water filling pressure break by high-pressure hydraulic pump, extremely all wells all are communicated with in the net;
IV. select a bite or several mouthfuls of wells as water injection well, all the other wells are annotated the light halogen production of adopting as producing well;
V. in process of production,, allocate water injection well and producing well, implement the control solution mining according to outpouring the variation of ore bed dissolving thickness (the also crack width b in the molten chamber of promptly calculating) in the molten chamber between well.
Advantage of the present invention and purposes: group well cracking controlled water-soluble recovery method for saline minerals bed, produce some characteristic information parameters of being grasped according to the face of land, can carry out efficient pressure burst communicatin and control solution mining to underground salt deposit, reduce production costs, improve the resource recovery rate, prevent the wasting of resources; Simultaneously, the control solution mining can reach the control to Rock-salt Cavity shape and development thereof, finally reaches the control to environmental hazards such as subsidences.Its predominant use is: the construction utilization of the exploitation of underground salt deposit and Rock-salt Cavity etc.
Description of drawings:
Fig. 1: control solution mining well pattern arrangement diagram
Label among the figure: 0#---water injection well, 1#～8#---producing well.
The specific embodiment:
Embodiment 1
I. select rational well spacing (100m) well location, arrange well pattern (0#, 1#, 2#, 3#, 4# well), this well pattern is also formed by 5 mouthfuls;
II. select central 0# well as fractured well, 1#, 2#, 3#, 4# well are as the target well, implement fracturing with high pressure slurry pump by central 0# well, be communicated with target well 1#, 2#, 3#, 4#, by regulating or close the target well of connection, can reach between many wells simultaneously or the purpose that is communicated with in succession;
III. after the connected well net forms, come into effect and annotate the light halogen production of adopting, the 0# well is as the water injection well fresh waterflood, 1#, 2#, 3#, 4# well go out halogen simultaneously as going out the halogen well, when according to a pair of when outpouring ore bed dissolving thickness b that distance between well and pressure reduction calculates and reaching 10cm, close this to going out the halogen well in the well, the water that outpours that allows ore bed dissolving thickness not reach 10cm continues dissolving to well, also closes this to well when dissolving thickness reaches 10cm; Afterwards, all open once more and outpour well, carry out the keying of wet well according to the molten chamber crack width that calculates gained.So circulation is carried out, and constantly water injection well and producing well are selected in allotment, realizing ore bed large tracts of land uniform dissolution (or sinking), thereby reaches the purpose of the salt mine exploitation of the high rate of extraction, high efficiency, economic environmental protection.
Embodiment 2
I. select rational well spacing (80m) well location, arrange well pattern (0#, 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8# well), this well pattern is by 9 mouthfuls of well constructions;
II. select central 0# well as fractured well, 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8# well are as the target well, implement fracturing with high pressure slurry pump by central 0# well, be communicated with target well 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8#, by regulating or close the target well of connection, can reach between many wells simultaneously or the purpose that successively is communicated with in succession; III. after the connected well net forms, come into effect and annotate the light halogen production of adopting, the 0# well is as the water injection well fresh waterflood, 1#～9# well goes out halogen simultaneously as going out the halogen well, when according to a pair of when outpouring ore bed dissolving thickness b that distance between well and pressure reduction calculates and reaching 10cm, close this to going out the halogen well in the well, the water that outpours that allows ore bed dissolving thickness not reach 10cm continues dissolving to well, also closes this to well when dissolving thickness reaches 10cm; Afterwards, all open once more and outpour well, carry out the keying of wet well according to the molten chamber crack width that calculates gained.So circulation is carried out, and constantly water injection well and producing well are selected in allotment, realizing ore bed large tracts of land uniform dissolution (or sinking), thereby reaches the purpose of the salt mine exploitation of the high rate of extraction, high efficiency, economic environmental protection.
Claims (1)
1. group well cracking controlled water-soluble recovery method for saline minerals bed is characterized in that: arrange many wells simultaneously in salt deposit, select near a bites of central authorities or several mouthfuls of wells as fractured well that all the other all be the target well, enforcement group wells hydraulic pressure burst communicatin; Group wells be communicated with to form after the well pattern, begins to produce bittern, and central former fractured well fresh waterflood, former target well all goes out halogen on every side; In process of production, according to the notes, wet well head pressure reduction h (cm water column) and the well spacing L (cm) that measure gained, calculate each at any time to outpouring the crack width in molten chamber between well
When the b value equals 10cm, turn down or close this convection current well, allow remaining outpour well production; When last also reaches setting to the crack width b that outpours well, all open wet well once more, carry out pressure monitoring, molten chamber crack width according to the rules opens and closes and outpours the well adjusting.The control dissolving to the rock salt ore bed is implemented in so circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021353565A CN1184407C (en) | 2002-08-09 | 2002-08-09 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021353565A CN1184407C (en) | 2002-08-09 | 2002-08-09 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1399058A CN1399058A (en) | 2003-02-26 |
| CN1184407C true CN1184407C (en) | 2005-01-12 |
Family
ID=4748155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021353565A Expired - Fee Related CN1184407C (en) | 2002-08-09 | 2002-08-09 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1184407C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300443C (en) * | 2004-02-09 | 2007-02-14 | 太原理工大学 | Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal |
| 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 |
| CN102418524A (en) * | 2011-09-22 | 2012-04-18 | 秦勇 | Novel technology of underground in-situ boring leaching mining |
| AU2014202934B2 (en) * | 2013-09-09 | 2016-03-17 | Korea Institute Of Geoscience And Mineral Resources (Kigam) | Apparatus and method for solution mining using cycling process |
| 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 |
| CN106194146B (en) * | 2016-08-09 | 2018-10-16 | 北京矿冶研究总院 | Mining method of underground salt mine |
| CN108413927B (en) * | 2018-02-06 | 2020-04-24 | 孝感广盐华源制盐有限公司 | Method and system for monitoring geological settlement of water-soluble mining salt well |
| CN110344810B (en) * | 2019-07-18 | 2020-09-15 | 中国科学院武汉岩土力学研究所 | Method for establishing horizontal cavity of rock salt layer gas storage |
| 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 |
-
2002
- 2002-08-09 CN CNB021353565A patent/CN1184407C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1399058A (en) | 2003-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106907137B (en) | A kind of method of the effective water conservancy diversion in shale oil reservoir volume fracturing crack | |
| CN106321054B (en) | A kind of acid fracturing method of carbonate reservoir | |
| CN208594924U (en) | Develop the well pattern structure of enhanced underground heat | |
| CN102606129B (en) | Method and system for thin interbed oilfield development | |
| CN105178961B (en) | A kind of roomy stope borehole drilling stage open stope afterwards filling mining method | |
| CN113738317A (en) | Method for combined exploitation of deep coal bed gas and dry hot rock type geothermal | |
| CN105239990A (en) | Placing method of self-simulating lateral-displacement horizontal well of super-low permeability tight reservoir | |
| CN1184407C (en) | Group well cracking controlled water-soluble recovery method for saline minerals bed | |
| CN104141481A (en) | Well spacing method of ultralow-permeability tight-oil reservoir horizontal well | |
| CN107740701A (en) | A kind of method of the accurate grout transformation of top plate thin layer limestone aquifer | |
| CN107780913B (en) | Atmospheric pressure shale gas reservoir fracturing method for horizontal shaft to penetrate through multiple layers | |
| CN105672978A (en) | Horizontal displacement type five-point horizontal well three-dimensional well pattern distributing method | |
| RU2612061C1 (en) | Recovery method of shale carbonate oil field | |
| CN102071922A (en) | Low permeable oil deposit virtual horizontal well development method | |
| CN103174403A (en) | Gravity and steam flooding combined mining method of thick layer containing interlayer common heavy oil reservoir | |
| CN104912485A (en) | Well completion method with shale gas layer radial jetting drilling and volume fracturing combined | |
| CN105283633A (en) | Method for increasing product recovery in fractures proximate fracture treated wellbores | |
| CN106089291A (en) | A kind of collaborative extraction is caving the old dead zone of formula and the method for lower coal seam coal bed gas | |
| CN106837290A (en) | The asynchronous note CO of the different well of packet of symmetrical expression cloth seam2Oil production method | |
| CN107542468A (en) | A kind of natural caving method | |
| CN110485986A (en) | Fracture and vug carbonate reservoir depth open-hole horizontal well is segmented acid fracturing control water method for increasing | |
| CN106640080A (en) | Deep part high-stress environment self-stabilizing arched stope arrangement mining method | |
| CN106761611A (en) | Double pressure break horizontal well cyclic water stimulation oil production methods of zip mode cloth seam | |
| RU2612060C9 (en) | Method of development of carbonate shaly oil deposits | |
| CN102191932A (en) | In-situ heat injection steeping control aqueous dissolution exploitation method of glauberite ore |
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: 20050112 Termination date: 20090909 |