CN104481541B - One-inclined multi-vertical cascaded well group salt mine mining method - Google Patents
One-inclined multi-vertical cascaded well group salt mine mining method Download PDFInfo
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- CN104481541B CN104481541B CN201410692019.7A CN201410692019A CN104481541B CN 104481541 B CN104481541 B CN 104481541B CN 201410692019 A CN201410692019 A CN 201410692019A CN 104481541 B CN104481541 B CN 104481541B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/20—Methods of underground mining; Layouts therefor for rock salt or potash salt
Abstract
The invention discloses a one-inclined multi-vertical cascaded well group salt mine mining method. A well group axis is designed according to the mine bed depth of a salt mine; a first vertical well at the end part of the axis is drilled to establish a first salt groove; an oriented horizontal well is drilled at the other end of the axis; drilling is carried in a salt layer along the axis, and the oriented horizontal well is in butt joint communication with the first vertical well; a second salt groove is established and a second vertical well is drilled so that a pair of communicated wells are formed by the first vertical well and the second vertical well; and one or more pairs of communicated wells are reconstructed until the final vertical well is established, so that a pair of circulating wells is formed by the final vertical well and the oriented horizontal well. According to the one-inclined multi-straight cascaded well group salt mine mining method, the oriented horizontal well with the large displacement is drilled and is communicated with the plurality of vertical wells to form a plurality of double-well well sets, so that the inclined section construction of a drilling well is reduced, and the respective advantages of the vertical walls and the oriented horizontal well are sufficiently developed; the problems that the oriented horizontal well occupies excessive resources and a well shaft is easy to damage are solved; and an accident that the oriented well is blocked in a salt mining process is reduced, and the safety production level and the mining efficiency of the salt well are improved.
Description
Technical field
The present invention relates to a kind of salt deposit drilling solution mining technology, how specifically a kind of one tiltedly directly concatenate well group salt mines
Recovery method.
Background technology
Horizontally-butted wells recovery method is to utilize directed-drilling technique, and Drilling straight well and directional horizontal wellss are in salt deposit
Form lysate circulation canal exploitation salts resources.At present in well mine salt industry dissolution mining by drilling technical field, level is docked
Well recovery method has been widely used.
In existing level butt shaft technology, typically using a bevelled halving well always, or diclinic butt shaft.Salt mine level
In butt shaft mining Practice, typically with directional horizontal wellss, that is, directional well often breaks down, such as the destruction of inclination section middle sleeve,
Inclination section is exposed the problems such as collapse, block, and the problems referred to above constrain the mining progress of salt mine significantly.
Content of the invention
It is an object of the invention to provide how a kind of one tiltedly directly concatenate well group salt well accident methods, by boring a bite big displacement
Directional horizontal wellss, connect with many mouthfuls of straight wells, formed multiple twin-well well groups, greatly reduce drilling well inclination section construction, fully
Play straight well and the respective advantage of directional horizontal wellss, the occupancy resource solving directional horizontal wellss is excessively more easily damaged with pit shaft
Problem, reduce occur during salt adopted by directional well block accident, improve salt well safety in production level and mining effect
Rate.
For achieving the above object, the present invention provides following technical scheme：
How a kind of one tiltedly directly concatenate well group salt well accident methods, concretely comprises the following steps：
1) the mineral deposit depth according to salt mine, designs a well group axis, determines the logarithm of halogen well on axis, subdrilling axis end
The first straight well Z1 in portion, and correspondence builds first salt bath in salt deposit；
2) other end in above-mentioned axis bores directional horizontal wellss X1, creeps into along axis, with first straight well Z1 in salt deposit
It is docked and connected；
3) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build second salt bath, away from first on well group axis
At mouthful mono- well spacing of straight well Z1, bore second straight well Z2, be docked and connected with second salt bath so that first straight well Z1 and second
Mouth straight well Z2 constitutes a pair of connected well, enters circulation and adopts halogen production；
4) drilling tool in directional horizontal wellss X1 is returned to drag and reach a well group distance, build the 3rd salt bath, on well group axis
At mono- well group distance of second mouthful of straight well Z2, bore the 3rd mouthful of straight well Z3；
5) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build the 4th salt bath, away from the 3rd on well group axis
At mouth mono- well spacing of straight well Z3, bore the 4th mouthful of straight well Z4 so that the 3rd mouthful of straight well Z3 and the 4th mouthful of straight well Z4 constitutes a pair of connection
Well, enters circulation and adopts halogen production；
6) repeat to build one or more pairs of connected wells, until last a bite straight well Zn, constitute a pair with directional horizontal wellss X1
Circulation well, realizes once orientation big displacement directional horizontal wellss X1 and multiple straight well Z1～Zn and is docked and connected, constitute multipair circulation and adopt
Halogen well.
As the further scheme of the present invention：Described step 3) and step 5) in, well spacing is constitute a pair of connected well two
The distance between mouth straight well, well spacing is 50-150 rice.
As the further scheme of the present invention：Described step 3) and step 5) in, well group distance for adjacent connected well it
Between distance, well group distance is 100-300 rice.
As the further scheme of the present invention：Described step 6) in, between last a bite straight well Zn and directional horizontal wellss X1
Distance be 150-350 rice.
As the further scheme of the present invention：Described step 4) and step 6) it is additionally included in water between adjacent connected well
In flat section, injection cement mortar forms cement plug, for blocking the passage in salt deposit, it is to avoid adopt interfering of halogen between well group.
As the further scheme of the present invention：The length of described cement plug is less than well group distance.
As the further scheme of the present invention：The length of described cement plug is the half of well group distance.
Compared with prior art, the invention has the beneficial effects as follows：
In drilling engineering technology, extended reach directional well technology is highly developed, and bottom hole displacement can reach thousands of rice
To a myriametre.The present invention passes through to bore the directional horizontal wellss of a bite big displacement, connects with many mouthfuls of straight wells, forms multiple twin-well well groups,
Greatly reduce the inclination section construction of drilling well, give full play to straight well and the respective advantage of directional horizontal wellss, solve orientation level
The problem that the occupancy resource of well is excessive and pit shaft is more easily damaged, reduces the accident blocking during salt adopted by directional well,
Improve safety in production level and the mining efficiency of salt well.
Most of well groups of the present invention are all straight wells, and casing setting depth is not limited by drillhole curvature, ensure that salt
The abundant sealing of bed top, improves the length of service of salt well；The well group sleeve opening discrepancy in elevation is little simultaneously, can improve brine quality, can
Arbitrarily switch the halogen direction that intakes out, to ensure the balanced development in molten chamber, and reach and extend well group life-span raising ore recovery ratio
Purpose.
Brief description
Fig. 1 is the schematic diagrames tiltedly how directly concatenating well group salt well accident methods；
In figure：1- salt bath, 2- fluid course, 3- cement plug.
Specific embodiment
Below in conjunction with the embodiment of the present invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Apply example, broadly fall into the scope of protection of the invention.
Refer to Fig. 1, in the embodiment of the present invention, how a kind of one tiltedly directly concatenate well group salt well accident methods, concretely comprises the following steps：
1) the mineral deposit depth according to salt mine, designs a well group axis, determines the logarithm of halogen well on axis, subdrilling axis end
The first straight well Z1 in portion, and correspondence builds first salt bath 1 in salt deposit；
2) other end in above-mentioned axis bores directional horizontal wellss X1, creeps into along axis, with first straight well Z1 in salt deposit
It is docked and connected；
3) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build second salt bath 1, away from first on well group axis
At mouthful mono- well spacing of straight well Z1, bore second straight well Z2, be docked and connected with second salt bath 1 so that first straight well Z1 and the
Two mouthfuls of straight well Z2 constitute a pair of connected well, and the horizontal channel between first salt bath 1 and second salt bath 1 is fluid course 2, enters
Enter circulation and adopt halogen production；
4) drilling tool in directional horizontal wellss X1 is returned to drag and reach a well group distance, build the 3rd salt bath 1, on well group axis
At mono- well group distance of second mouthful of straight well Z2, bore the 3rd mouthful of straight well Z3；
5) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build the 4th salt bath 1, away from the 3rd on well group axis
At mouth mono- well spacing of straight well Z3, bore the 4th mouthful of straight well Z4 so that the 3rd mouthful of straight well Z3 and the 4th mouthful of straight well Z4 constitutes a pair of connection
Well, the horizontal channel between the 3rd salt bath 1 and the 4th salt bath 1 is also fluid course 2, enters circulation and adopts halogen production；
6) repeat to build one or more pairs of connected wells, until last a bite straight well Zn, constitute a pair with directional horizontal wellss X1
Circulation well, realizes once orientation big displacement directional horizontal wellss X1 and multiple straight well Z1～Zn and is docked and connected, constitute multipair circulation and adopt
Halogen well.
In above-mentioned steps, step 4) and step 6) in, can also inject in the horizontal channel between adjacent connected well
Cement mortar forms cement plug 3, for blocking the passage in salt deposit, it is to avoid adopt interfering of halogen between well group.Not tight for requiring
The mine of lattice can not also cementing plug 3.
Embodiment 1
Certain salt mine, 1000 meters of mineral deposit buried depth, 60 meters about of seam thickness, originally using the horizontally-butted wells of " is oblique always "
Group exploitation, because inclined shaft is more, causes the waste of ample resources near border, meanwhile, increased drilling cost deflecting more, and
Often blocking or even scraps inclined shaft in halogen well in process of production.
In the embodiment of the present invention, well group string is designed as 6 mouthfuls of wells, is divided into 3 groups of wells, two ends well head distance is 850 meters.First
Group, second group of well spacing are 100 meters, and the 3rd group for always one tiltedly, and well spacing is 250 meters, and inclination section circular curve radius is 150
Rice.200 meters of the distance between well group, in horizontal segment, 100 meters of the length of cement plug 3, concretely comprises the following steps：
1) construction method of mean level butt shaft, the first straight well Z1 of subdrilling distalmost end are pressed, setting of casing is cemented the well, and goes forward side by side
Salt bath 1 is built in row short-term convection circulation；
2) bore directional horizontal wellss X1 again, method is consistent with mean level butt shaft, and only horizontal segment is longer, it is straight that brill reaches first
The salt bath 1 of well Z1；
3) above carry 100 meters of drilling tool, that is, the drilling tool in horizontal channel returns and drags 100 meters, second salt is built in water filling from drilling rod
Groove 1；Bore second mouthful of straight well Z2 simultaneously, dock with second salt bath 1 in horizontal channel；Above carry 50 to 150 meters of drilling tool, in level
Cement plug 3 is built in passage；Press connected well water filling simultaneously and row's halogen produces in first straight well Z1, second mouthful of straight well Z2；
4) in the same way and program, above carry 100 meters of drilling tool, that is, the drilling tool in horizontal channel returns and drags 100 meters, from drilling rod
The 3rd salt bath 1 is built in middle water filling；Bore the 3rd mouthful of straight well Z3 simultaneously, dock with the 3rd salt bath 1 in horizontal channel；
5) drilling tool in directional horizontal wellss X1 is returned and drag 100 meters, the 4th salt bath 1 is built in water filling from drilling rod；Bore simultaneously
4th mouthful of straight well Z4, is docked with the 4th salt bath 1 in horizontal channel；Above carry 50 to 150 meters of drilling tool, build in horizontal channel
Cement plug 3；Press connected well water filling simultaneously and row's halogen produces in the 3rd mouthful of straight well Z3, the 4th mouthful of straight well Z4；
6) in the same way and program, above carry 100 meters of drilling tool, that is, the drilling tool in horizontal channel returns and drags 100 meters, from drilling rod
The 5th salt bath 1 is built in middle water filling；Bore the 5th mouthful of straight well Z3 simultaneously, dock with the 5th salt bath 1 in horizontal channel；5th mouthful
Straight well Z5 and directional horizontal wellss X1 constitutes well group.
In the embodiment of the present invention, concatenation well group can be 4 mouthful two to or 6 mouthful 3 right, can also be that many wells are multipair.
The present invention passes through to bore the directional horizontal wellss X1 of a bite big displacement, connects with many mouthfuls of straight well Z1-Zn, forms multiple twin-wells
Well group, greatly reduces the inclination section construction of drilling well, gives full play to straight well and the respective advantage of directional horizontal wellss, solve orientation
The problem that the occupancy resource of horizontal well is excessive and pit shaft is more easily damaged, reduces the thing blocking during salt adopted by directional well
Therefore, improve safety in production level and the mining efficiency of salt well.
Most of well groups of the present invention are all straight wells, and casing setting depth is not limited by drillhole curvature, ensure that salt
The abundant sealing of bed top, improves the length of service of salt well；The well group sleeve opening discrepancy in elevation is little simultaneously, can improve brine quality, can
Arbitrarily switch the halogen direction that intakes out, to ensure the balanced development in molten chamber, and reach and extend well group life-span raising ore recovery ratio
Purpose.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of specification
Using specification as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (5)
1. tiltedly how straight concatenation well group salt well accident methods are it is characterised in that concretely comprise the following steps for one kind one：
1) the mineral deposit depth according to salt mine, designs a well group axis, determines the logarithm of halogen well on axis, subdrilling axis end
First straight well Z1, and correspondence builds first salt bath in salt deposit；
2) other end in above-mentioned axis bores directional horizontal wellss X1, creeps into along axis, dock with first straight well Z1 in salt deposit
Connection；
3) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build second salt bath, straight away from first on well group axis
At mono- well spacing of well Z1, bore second straight well Z2, be docked and connected with second salt bath so that first straight well Z1 and second mouthful are straight
Well Z2 constitutes a pair of connected well, enters circulation and adopts halogen production；
4) drilling tool in directional horizontal wellss X1 is returned to drag and reach a well group distance, build the 3rd salt bath, away from well group axis
At mono- well group distance of two mouthfuls of straight well Z2, bore the 3rd mouthful of straight well Z3；
5) drilling tool in directional horizontal wellss X1 is returned and drag a well spacing, build the 4th salt bath, straight away from the 3rd mouthful on well group axis
At mono- well spacing of well Z3, bore the 4th mouthful of straight well Z4 so that the 3rd mouthful of straight well Z3 and the 4th mouthful of straight well Z4 constitutes a pair of connected well, enter
Enter circulation and adopt halogen production；
6) repeat to build one or more pairs of connected wells, until last a bite straight well Zn, constitute a pair of circulation with directional horizontal wellss X1
Well, realizes once orientation big displacement directional horizontal wellss X1 and multiple straight well Z1～Zn and is docked and connected, constitute multipair circulation halogen mining well；
The distance between last a bite straight well Zn and directional horizontal wellss X1 is 150-350 rice；
Described step 4) and step 6) it is additionally included in injection cement mortar formation cement plug in the horizontal segment between adjacent connected well,
For blocking the passage in salt deposit, it is to avoid adopt interfering of halogen between well group.
2. according to claim 1 a kind of one tiltedly many straight concatenation well group salt well accident methods it is characterised in that described step
3) and step 5) in, well spacing is to constitute the distance between two mouthfuls of straight wells of a pair of connected well, and well spacing is 50-150 rice.
3. according to claim 1 a kind of one tiltedly many straight concatenation well group salt well accident methods it is characterised in that described step
4) in, well group distance is the distance between adjacent connected well, and well group distance is 100-300 rice.
4. according to claim 1 a kind of one tiltedly many straight concatenation well group salt well accident methods it is characterised in that described cement
The length of plug is less than well group distance.
5. the one kind one according to claim 1 or 4 tiltedly many straight concatenation well group salt well accident methods it is characterised in that described
The length of cement plug is the half of well group distance.
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| CN201410692019.7A CN104481541B (en) | 2014-11-27 | 2014-11-27 | One-inclined multi-vertical cascaded well group salt mine mining method |
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| CN104481541B true CN104481541B (en) | 2017-02-22 |
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| CN105927193B (en) * | 2016-07-19 | 2018-07-06 | 中盐勘察设计院有限公司 | A kind of recovery method of deep playa halite ore bed |
| CN109026002B (en) * | 2018-09-20 | 2020-04-07 | 中盐勘察设计院有限公司 | Salt mine mining method adopting horizontal branch hole butt-joint well group |
| CN109506850A (en) * | 2018-11-19 | 2019-03-22 | 湖北双环科技股份有限公司 | A kind of salt well method for testing tightness |
| CN110566176A (en) * | 2019-09-26 | 2019-12-13 | 四川盐业地质钻井大队 | Rock salt mine mining method |
| CN111395980B (en) * | 2020-03-30 | 2022-10-11 | 河南永银化工实业有限公司 | Method for solving sand blockage in casing of brine well |
| CN113417641A (en) * | 2021-07-21 | 2021-09-21 | 江苏淮盐矿业有限公司 | Mine three-dimensional mining process |
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| US5690390A (en) * | 1996-04-19 | 1997-11-25 | Fmc Corporation | Process for solution mining underground evaporite ore formations such as trona |
| CN1415841A (en) * | 2002-12-01 | 2003-05-07 | 化学工业部连云港设计研究院 | Drilling method for exploiting soluble salt mine through dissolution method |
| RU2244107C1 (en) * | 2003-09-22 | 2005-01-10 | ОАО "Уральский научно-исследовательский и проектный институт галургии" (ОАО "Галургия") | Method of joined development of oil and potassium deposits |
| 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 |
| CN102852490A (en) * | 2012-09-07 | 2013-01-02 | 北京九尊能源技术股份有限公司 | High gas suction and discharge process method for complex well |
| CN102828777B (en) * | 2012-09-19 | 2015-07-29 | 重庆大学 | Double-vertical shaft horizontal butt joint salt cavern deposit construction method |
| CN103161468B (en) * | 2013-03-28 | 2015-06-17 | 江苏井神盐化股份有限公司 | Well and rock salt solution mining-well recharging filling circulation mining method |
| CN103216234B (en) * | 2013-04-23 | 2015-11-18 | 中国地质科学院勘探技术研究所 | A kind of construction method of horizontal branch many well groups butt shaft |
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