CN107905844B - Halogen method is arranged in salt mine old chamber Quan Caidong space gas injection - Google Patents
Halogen method is arranged in salt mine old chamber Quan Caidong space gas injection Download PDFInfo
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- CN107905844B CN107905844B CN201711050265.2A CN201711050265A CN107905844B CN 107905844 B CN107905844 B CN 107905844B CN 201711050265 A CN201711050265 A CN 201711050265A CN 107905844 B CN107905844 B CN 107905844B
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- slagging
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- 238000002347 injection Methods 0.000 title claims abstract description 53
- 239000007924 injection Substances 0.000 title claims abstract description 53
- 150000003839 salts Chemical class 0.000 title claims abstract description 49
- 229910052736 halogen Inorganic materials 0.000 title claims abstract description 42
- 150000002367 halogens Chemical class 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012267 brine Substances 0.000 claims abstract description 53
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 51
- 239000013049 sediment Substances 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 30
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 16
- 238000005553 drilling Methods 0.000 claims description 15
- 239000002283 diesel fuel Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 83
- 241000194386 Coelosis Species 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000010430 carbonatite Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012155 injection solvent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses salt mine old chamber Quan Caidong space gas injections to arrange halogen method, it include: first to build new chamber, new chamber is connected to old chamber again, again to old chamber gas injection, the brine in old chamber is discharged from new chamber, form gas storage, sediment gap is finally occupied by gas substantially, realize gas injection row's halogen in sediment, solves the technical issues of brine in sediment gap can not being discharged in the prior art, it not only increases old chamber coelosis rate, increase the gas storage volume of old chamber, make the gas storage built up that can store more gases；And do not need to measure the configuration of old chamber, evade the difficult problem of the form detection of the old chamber of butt shaft in the prior art.Input-output ratio of the invention is high and construction speed is fast.
Description
Technical field
The present invention relates to salt hole air reserved storeroom building technology fields more particularly to a kind of old chamber Quan Caidong space gas injection of salt mine to arrange
Halogen method.
Background technique
China's natural gas lays in wretched insufficiency, meanwhile, with novel energy-storings modes such as compression energy accumulation power station hydrogen storages
Development, there is an urgent need to build a large amount of large-scale underground natural gas storage tanks.China's salt well accident is with a long history, huge, salt ore mining
A large amount of Underground Dissolved Cavity is formd after halogen, commonly referred to as these molten chambers are to adopt the old chamber of halogen (referred to as " old chamber ").
Currently, old chamber gas storage reconstruction in terms of halogen is arranged in gas injection, is primarily present following technical problem:
1) the sediment volume accounting adopted in space is high, and old chamber coelosis rate is low.
During adopting halogen, salt is dissolved in the brine formed after water and is plucked out of to ground, and the impurity for being insoluble in water is then stacked into
Salt bottom of chamber portion is formed " sediment ".Paper " the more interlayer salt cave storage cavern sediment being published in 2013 in " mining industry research and development "
Broken swollen-coefficient of expansion experimental study ", show that the broken swollen coefficient of the sediment of its studied salt mine is up to 1.701.It is broken swollen according to this
Coefficient calculates, and when the synthesis soluble rate of salt mine is lower than 63%, adopting space will all be covered by sediment.However, China exists
A large amount of comprehensive soluble rates are lower than 70% salt mine, adopt brine filling area accounting very little in space, are arranged using existing gas injection
Halogen technology is only capable of forming small gas storage space.
2) halogen technology is arranged in current gas injection, and the brine in sediment gap can not be discharged.
Insoluble impurity in salt mine, generally mud stone, dolomite, sandstone, anhydrite etc., these insoluble matters are crushed after meeting water
Expansion is finally stacked into salt cave bottom, contains a large amount of gaps in the sediment of accumulation.And existing gas injection row halogen technology cannot achieve
Halogen is arranged in salt chamber Quan Caidong space gas injection, it means that only few volume is in a large amount of old chambers for gas storage, it is difficult to meet China
Urgent need to gas storage.
3) old chamber form detection is difficult, and gas injection arranges halogen design and lacks foundation.
Different from fining technique employed in the new chamber building course of salt hole air reserved storeroom, in salt mine butt shaft recovery process
In, water flooding regime often irregularly changes, and the depth of halogen mining pipe column is also often due to the factors such as down-hole accident, pipe cutting operation
Change, therefore, the form of the old chamber of butt shaft is extremely complex, along with sediment buries the factors such as horizontal channel, current test skill
Art is only capable of measuring the salt chamber form at the top of straight well or inclined shaft, it is difficult to the configuration of old chamber is detected, to be difficult to find that properly
Row's halogen point, and then old chamber gas injection row's halogen construction is caused to lack foundation, it is difficult to field conduct.
Summary of the invention
The present invention has evaded and having docked in the prior art by providing a kind of salt mine old chamber Quan Caidong space gas injection row halogen method
The difficult problem of the form detection of the old chamber of well, solving in the prior art can not ask the technology that the brine in sediment gap is discharged
Topic realizes the technical effect for improving old chamber coelosis rate and increasing gas storage volume.
The present invention provides a kind of old chamber Quan Caidong space gas injections of salt mine to arrange halogen method, comprising:
Build new chamber；
The new chamber is connected to old chamber；
To the old chamber gas injection, the brine in the old chamber is discharged from the new chamber, forms gas storage.
Further, in the building course of the new chamber, the boundary of the new chamber is at a distance from the boundary of the old chamber
It is maintained at 10-20m.
It is further, described to build new chamber, comprising:
Bore the new well of a bite；
Solvent is injected into the new well, forms brine after making the solvent dissolution salt mine；
The brine is discharged to earth's surface.
Further, during the construction new chamber, further includes:
Diesel oil is injected into the new chamber, forms diesel oil bed course in the new top of chamber.
Further, it after the new top of chamber forms diesel oil bed course, removes the gred to the new chamber.
It is further, described to remove the gred to the new chamber, comprising:
The injection slagging-off acid solution into the new chamber, is that can be carried to by the brine by the sediment corrosion in the new chamber
The particle on ground.
It is further, described to be connected to the new chamber with old chamber, comprising:
The new chamber after the slagging-off is connected to the old chamber by any one following mode:
Natural solution and communication, pressure burst communicatin or drilling well connection.
Further, the new chamber after the slagging-off is connected to by way of natural solution and communication with the old chamber, is specifically included:
The solvent is injected into the new chamber；
Whether monitor in the straight well or inclined shaft of the old chamber has brine outflow；
If so, illustrating that the new chamber after the slagging-off has been connected to the old chamber.
Further, the new chamber after the slagging-off is connected to by way of pressure burst communicatin with the old chamber, is specifically included:
It is passed through high pressure water into the new chamber after the slagging-off, the new chamber after making the slagging-off and old chamber distance are nearest
Position is pressed off by the high pressure water, and the new chamber after making the slagging-off is connected to the old chamber.
Further, the new chamber after the slagging-off is connected in such a way that drilling well is connected to the old chamber, is specifically included:
In new chamber after drilling tool to be placed on to the slagging-off；
Drilled by the drilling tool from the new chamber after the slagging-off to the old chamber, the new chamber after making the slagging-off with it is described
Old chamber connection.
One or more technical solution provided in the present invention, has at least the following technical effects or advantages:
New chamber is first built, then new chamber is connected to old chamber, then to old chamber gas injection, the brine in old chamber is discharged from new chamber,
Gas storage is formed, sediment gap is finally occupied by gas substantially, realizes gas injection row's halogen in sediment, solves in the prior art
It the technical issues of brine in sediment gap can not being discharged, not only increases old chamber coelosis rate, increase the storing gas of old chamber
Product, makes the gas storage built up that can store more gases；And do not need to measure the configuration of old chamber, evade the prior art
The difficult problem of the form detection of the middle old chamber of butt shaft.Input-output ratio of the invention is high and construction speed is fast.
Detailed description of the invention
Fig. 1 is the flow chart that halogen method is arranged in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection；
Fig. 2 is to execute the step S110 in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection row's halogen method
Status diagram later；
Fig. 3 is to remove in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection row's halogen method to new chamber
The status diagram of slag process；
Fig. 4 is to inject bavin into new chamber in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection row's halogen method
The status diagram of oily process；
Fig. 5 is to execute the step S120 in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection row's halogen method
Status diagram later；
Fig. 6 is the view of the A-A ' section in Fig. 5；
Fig. 7 is that execution step S130 mistake in halogen method is arranged in salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection
Status diagram in journey；
Fig. 8 is that salt mine provided in an embodiment of the present invention old chamber Quan Caidong space gas injection is arranged when running gas storage in halogen method
Status diagram；
Wherein, the new well of 1-, 2- straight well, 3- inclined shaft, 4- protective casing, 5- central tube, 6- target spot, 7- salt mine top plate, 8- salt
Mine bottom plate, the old chamber of 9-, 10- brine filling area, 11- brine and sediment filling area, 12- diesel oil bed course, the new chamber of 13-, the new chamber-of 14-
Old chamber communicating passage, 15- salt mine, 16- gas and sediment filling area, 17- gas filling area.
Specific embodiment
The embodiment of the present invention has evaded the prior art by providing a kind of salt mine old chamber Quan Caidong space gas injection row halogen method
The difficult problem of the form detection of the middle old chamber of butt shaft, solves the skill that the brine in sediment gap can not be discharged in the prior art
Art problem realizes the technical effect for improving old chamber coelosis rate and increasing gas storage volume.
Technical solution in the embodiment of the present invention is to solve the above problems, general thought is as follows:
New chamber is first built, then new chamber is connected to old chamber, then to old chamber gas injection, the brine in old chamber is discharged from new chamber,
Gas storage is formed, sediment gap is finally occupied by gas substantially, realizes gas injection row's halogen in sediment, solves in the prior art
It the technical issues of brine in sediment gap can not being discharged, not only increases old chamber coelosis rate, increase the storing gas of old chamber
Product, makes the gas storage built up that can store more gases；And do not need to measure the configuration of old chamber, evade the prior art
The difficult problem of the form detection of the middle old chamber of butt shaft.The input-output ratio of the embodiment of the present invention is high and construction speed is fast.
Above-mentioned technical proposal in order to better understand, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Before being illustrated to the embodiment of the present invention, first in the embodiment of the present invention " gas injection row halogen ", " adopt sky
Between " and the concept in " space Quan Caidong " be illustrated:
" gas injection row halogen " refers to, the gas for needing to store to the old intracavitary injection in underground, while brine being discharged to the mistake on ground
Journey.
" adopting space " refers to, the underground space that salt mine is formed after being dissolved in water, and can be divided into two class regions: the first kind
Region is brine filling area, only has brine in the region, is free of sediment；Second class region is brine and sediment filling area, the area
The mixture of brine and sediment is filled in domain.
" space Quan Caidong " refers to, whole spaces comprising above two class region.
Referring to Fig. 1, halogen method is arranged in salt mine old chamber Quan Caidong space gas injection provided in an embodiment of the present invention, comprising:
Step S110: new chamber 13 is built；
Referring to fig. 2, this step is illustrated:
The new well 1 of a bite is bored, and completes full well section well cementation；
Solvent is injected into new well 1, forms brine after so that solvent is dissolved salt mine 15；
Brine is discharged to earth's surface.
It should be noted that relative to inclined shaft end, since the salt chamber rule of development at straight well end is more visible, thus by new well 1
It is provided near the straight well 2 of old chamber 9, can be conducive to ensure going on smoothly for building course in this way.And if it is known that inclined shaft end
New well 1 can be also opened near the inclined shaft 3 of old chamber 9 by clearly salt chamber form.
In order to guarantee that new well 1 and old chamber 9 keep reasonable distance and relative position, i.e. holding distance remote enough is to prevent
New well 1 pierces old chamber 9 in drilling process, and holding distance close enough is to guarantee to connect as early as possible with old chamber 9 after new chamber 13
Logical, in the building course of new chamber 13, the boundary of new chamber 13 is maintained at 10-20m at a distance from the boundary of old chamber 9.
Further, salt mine top plate 7 is located at the top of salt mine 15, and salt mine bottom plate 8 is located at the lower section of salt mine 15.New well 1 bores
Well target spot 6 is located at 8 or more 1-3m of salt mine bottom plate, and under the premise of can ensure formation seals, this is apart from smaller more advantageous.Newly
The tubing string of well 1 includes: protective casing 4 and central tube 5.Wherein, the minimum point of protective casing 4 is located at the above 4-6m of target spot, technology
The full well section well cementing of cement of casing 4；The minimum point of central tube 5 is located above 1m of target spot or so, and the purpose is to guarantee bottom salt mine energy
It is enough sufficiently to be dissolved by solvent, it is old so as to be discharged to ensure to be connected to old chamber 9 in position low as far as possible after new chamber 13
More brine in chamber 9, to obtain bigger gas storage space.
In the present embodiment, solvent is injected from central tube 5, forms brine, brine warp after the solvent dissolution salt mine 15 of injection
Ground installation is discharged to by the annular space between protective casing 4 and central tube 5.With the passage of dissolution time, new chamber 13 formed and by
Flaring is big.
Wherein, the solvent of injection is the liquid that can dissolve salt mine 15, such as saliferous (such as NaCl, Na2SO4Deng) concentration is not
H greater than 30g/L2O solution.
The embodiment of the present invention is illustrated, during building new chamber 13, further includes:
Diesel oil is injected into new chamber 13, diesel oil bed course 12 is formed at the top of new chamber 13, new chamber 13 not only can be avoided
Too fast upward development, but also can be accumulated excessively to avoid the sediment of new 13 bottom of chamber, further ensure the transverse direction of new chamber 13
Extension, to be connected to as early as possible with old chamber 9.
Specifically, periodically the annular space between protective casing 4 and central tube 5 injects diesel oil.
After executing the step S110, further includes:
It removes the gred to new chamber 13；
Referring to Fig. 3 and Fig. 4, this step is illustrated:
Into new chamber 13, injection slagging-off acid solution, is that ground can be carried to by brine by the sediment corrosion in new chamber 13
Grain.
Further, slagging-off acid solution periodically is injected from central tube 5, so that being by the sediment corrosion in new chamber 13 can be by halogen
Water is carried to the little particle on ground, can not only prevent sediment accumulation excessive and cause stifled well, but also be also possible to prevent sediment mistake
Degree is accumulated and restricts the extending transversely of new chamber 13.
In the present embodiment, the proportion for the acid solution that removes the gred is determined according to the lithology of sediment, in generally easy and sediment
Carbonatite, sandstone or clay reaction, but be not easy the acidic materials to react with salt mine 15 (main component NaCl).Tool
Body, slagging-off acid solution can be hydrochloric acid (HCl), hydrofluoric acid (HF) and water (H2O mixed liquor).
Step S120: new chamber 13 is connected to old chamber 9, forms the old chamber communicating passage 14 of new chamber-；
Referring to figs. 5 and 6, this step is illustrated:
The new chamber 13 after slagging-off is connected to old chamber 9 by any one following mode:
Natural solution and communication, pressure burst communicatin or drilling well connection.
Specifically,
Whether the volume of the new chamber 13 after judging slagging-off reaches preset vol；
In the present embodiment, the volume of the new chamber 13 after being removed the gred by sonar contact.
If reached, illustrate that new chamber 13 has enough row's halogen space, then can connect the new chamber 13 after slagging-off with old chamber 9
It is logical；
If not up to, illustrating that new chamber 13 without enough row's halogen space, continues molten chamber.
Specifically,
The new chamber 13 after slagging-off is connected to old chamber 9 by way of natural solution and communication, is specifically included:
Solvent is injected into new chamber 13；
Whether monitor in the straight well 2 or inclined shaft 3 of old chamber 9 has brine outflow；
If so, illustrating that the new chamber 13 after slagging-off has been connected to old chamber 9；
Specifically, in the building course of new chamber 13, straight well 2 and 3 well head of inclined shaft are kept open, and to 2 He of straight well
The brine flow of inclined shaft 3 is monitored.When monitor has brine persistently to flow out in straight well 2 or inclined shaft 3, illustrate new chamber 13 with it is old
Chamber 9 has been connected to.At this point, close the valve on the protective casing 4 of new well 1, continue to inject solvent from central tube 5, the purpose is into
One step expands the new old chamber communicating passage 14 of chamber-.
The new chamber 13 after slagging-off is connected to old chamber 9 by way of pressure burst communicatin, is specifically included:
High pressure water is passed through into the new chamber 13 after slagging-off, and (pressure is that the pressure of brine in new chamber 13 is made to be higher than stratum where it
Fracture pressure 1-3MPa), the new chamber 13 after making slagging-off is pressed off apart from nearest position by high pressure water with old chamber 9, after making slagging-off
New chamber 13 is connected to old chamber 9.
In the present embodiment, straight well 2 and 3 well head of inclined shaft are opened, the valve on the protective casing 4 of new well 1 is closed, from center
Pipe 5 injects high pressure water, and the Controlling principle of water injection pressure is formation fracture pressure 1- where the pressure of brine in new chamber 13 is higher than it
3MPa.Since new chamber 13 and old chamber 9 are closer, thus they the distance between nearest position will be at first by high water pressure
It opens, continues therefrom heart pipe 5 after pressing off and inject high pressure water, the purpose is to the old chamber communicating passages 14 of the new chamber-of further expansion.
The new chamber 13 after slagging-off is connected to old chamber 9 in such a way that drilling well is connected to, is specifically included:
Drilling tool is placed in the new chamber 13 after slagging-off；
It is drilled by drilling tool from the new chamber 13 after slagging-off to old chamber 9, the new chamber 13 after making slagging-off is connected to old chamber 9；
After drilling through, continue to inject high pressure water from central tube 5, the purpose is to the old chamber communicating passages of the new chamber-of further expansion
14。
In order to avoid expanding after old 14 excessive dissolution of chamber communicating passage of new chamber-, connect by the new chamber 13 after slagging-off with old chamber 9
After logical, further includes:
Continue the injection solvent of the new chamber 13 after slagging-off, and total injection control is in 100m3Within.
Step S130: to old 9 gas injection of chamber, the brine in old chamber 9 is discharged from the new chamber 13 after slagging-off, forms gas storage.
In the present embodiment, the gas of injection be it is following any one:
Natural gas, hydrogen, air, carbon dioxide.
Referring to Fig. 7, this step is illustrated:
The down-hole string of new chamber 13 and old chamber 9 is transform as hermetic seal tubular column system, wherein 5 tripping in of central tube of new well 1
The 13 above 1-2m in sediment face of new chamber, from inclined shaft 3 (or straight well 2 or straight well 2 and inclined shaft 3 are simultaneously) injection high pressure gas, (pressure is to make
The air pressure of depth locating for gas-liquid interface is higher than saturated bittern head of liquid 1-3MPa), the pressure of brine in old chamber 9 in high pressure gas
Under power effect, via the old chamber communicating passage 14 of new chamber-, returned by the central tube 5 of new well 1 to ground brine treatment factory.Finally, always
The brine in brine filling area 10 and brine and sediment filling area 11 in chamber 9 is discharged substantially, forms gas and sediment filling
Area 16 and gas filling area 17, to realize gas injection row's halogen in the space Quan Caidong of old chamber 9.
During halogen is arranged in gas injection, to prevent the salt in brine from crystallizing in central tube 5, the hair of pipe plugging by crystallization accident is caused
It is raw, it needs to do crystallization-preventive processing to central tube 5.Specifically, every a couple of days (such as 7 days), solvent is injected to dissolve to central tube 5
The salt formed is crystallized, the salinity of solvent is not more than 30g/L, and the flow of solvent injection is not more than 20m3/ h, solvent injection
2-5 times of the pipe column volumes of pipe 5 centered on total amount.
After executing the step S130, further includes: gas storage operation.
Referring to Fig. 8, this step is illustrated:
After halogen is arranged in gas injection, the minimum point of the central tube 5 of new well 1 is promoted to inside protective casing 4, in preventing
The bottom of heart pipe 5 is placed in brine for a long time to be corroded.Meanwhile the central tube 5 after promotion can also be used as gas and infuse the channel adopted.
In the operational process of gas storage, not only gas production can be infused from any a well in new well 1, straight well 2 and inclined shaft 3, but also
Gas production can also be infused from any two mouthfuls of wells in new well 1, straight well 2 and inclined shaft 3, note adopts efficiency and is increased to individual well gas storage in this way
2 times or so；Gas production can also be infused simultaneously from new well 1, straight well 2 and inclined shaft 3, note adopts efficiency and is increased to individual well gas storage in this way
3 times or so.
[technical effect]
1, first build new chamber 13, then new chamber 13 be connected to old chamber 9, then to old 9 gas injection of chamber, make brine in old chamber 9 from
New chamber 13 is discharged, and forms gas storage, and sediment gap is finally occupied by gas substantially, realizes gas injection row's halogen in sediment, solves
It the technical issues of brine in sediment gap can not being discharged in the prior art, not only increases old 9 coelosis rate of chamber, increase
The gas storage volume of old chamber 9, makes the gas storage built up that can store more gases；And do not need to measure the configuration of old chamber 9,
The difficult problem of the form detection of the old chamber of butt shaft in the prior art is evaded.The input-output ratio of the embodiment of the present invention is high and builds
Speed is fast.
2, in the building course of new chamber 13, the boundary of new chamber 13 is maintained at 10-20m at a distance from the boundary of old chamber 9, because
And ensure that new well 1 keeps reasonable distance and relative position with old chamber 9, i.e. holding distance remote enough is to prevent new well 1 from existing
Old chamber 9 is pierced in drilling process, while keeping close enough distance to guarantee that new chamber 13 can be connected to as early as possible with old chamber 9 again.
3, after the construction of new chamber 13, diesel oil is injected into new chamber 13, forms diesel oil bed course 12 at the top of new chamber 13, no
Only can be to avoid the too fast upward development of new chamber 13, but also can accumulate to avoid the sediment of new 13 bottom of chamber excessively, to ensure
Newly chamber 13 is extending transversely, is connected to as early as possible with old chamber 9.
4, after being connected to new chamber 13 with old chamber 9, solvent is injected to new chamber 13, and total injection control is in 100m3With
It is interior, so as to avoid expanding after old 14 excessive dissolution of chamber communicating passage of new chamber-.
5, the mode for being connected to new chamber 13 with old chamber 9 the embodiment of the invention provides three kinds, to improve of the invention real
Apply the applicability of example.
The old chamber 9 that the embodiment of the present invention is applicable to adopt salt mine butt shaft halogen formation is reconstructed as natural gas, hydrogen storage cavern
Or the construction engineering of compression energy accumulation power station gas storage.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. halogen method is arranged in a kind of salt mine old chamber Quan Caidong space gas injection characterized by comprising
Build new chamber；
The new chamber is connected to old chamber；
To the old chamber gas injection, the brine in the old chamber is discharged from the new chamber, forms gas storage；
The down-hole string of new chamber and old chamber is transform as hermetic seal tubular column system, wherein the central tube tripping in new chamber sediment face of new well
The above 1-2m injects high pressure gas from inclined shaft, and old intracavitary brine is under the pressure effect of high pressure gas, via the old chamber of new chamber-
Communicating passage is returned by the central tube of new well to ground；Finally, in old intracavitary brine filling area and brine and sediment filling area
Brine be discharged substantially, gas and sediment filling area and gas filling area are formed, to realize the space Quan Caidong of old chamber
Halogen is arranged in gas injection.
2. the method as described in claim 1, which is characterized in that in the building course of the new chamber, the boundary of the new chamber
10-20m is maintained at a distance from the boundary of the old chamber.
3. the method as described in claim 1, which is characterized in that described to build new chamber, comprising:
Bore the new well of a bite；
Solvent is injected into the new well, forms brine after making the solvent dissolution salt mine；
The brine is discharged to earth's surface.
4. method as claimed in claim 3, which is characterized in that during the construction new chamber, further includes:
Diesel oil is injected into the new chamber, forms diesel oil bed course in the new top of chamber.
5. method as claimed in claim 4, which is characterized in that after the new top of chamber forms diesel oil bed course, to described
New chamber removes the gred.
6. method as claimed in claim 5, which is characterized in that described to remove the gred to the new chamber, comprising:
The injection slagging-off acid solution into the new chamber, is that can be carried to ground by the brine by the sediment corrosion in the new chamber
Particle.
7. method as claimed in claim 5, which is characterized in that described to be connected to the new chamber with old chamber, comprising:
The new chamber after the slagging-off is connected to the old chamber by any one following mode:
Natural solution and communication, pressure burst communicatin or drilling well connection.
8. the method for claim 7, which is characterized in that by way of natural solution and communication by after the slagging-off new chamber with
The old chamber connection, specifically includes:
The solvent is injected into the new chamber；
Whether monitor in the straight well or inclined shaft of the old chamber has brine outflow；
If so, illustrating that the new chamber after the slagging-off has been connected to the old chamber.
9. the method for claim 7, which is characterized in that by way of pressure burst communicatin by after the slagging-off new chamber with
The old chamber connection, specifically includes:
It is passed through high pressure water into the new chamber after the slagging-off, the new chamber after making the slagging-off and the old chamber are apart from nearest position
It is pressed off by the high pressure water, the new chamber after making the slagging-off is connected to the old chamber.
10. the method for claim 7, which is characterized in that by the new chamber after the slagging-off in such a way that drilling well is connected to
It is connected to, specifically includes with the old chamber:
In new chamber after drilling tool to be placed on to the slagging-off；
It is drilled by the drilling tool from the new chamber after the slagging-off to the old chamber, the new chamber and the old chamber after making the slagging-off
Connection.
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| CN109630064A (en) * | 2018-11-19 | 2019-04-16 | 湖北双环科技股份有限公司 | A kind of old salt well remodeling method |
| CN111274662B (en) * | 2018-12-03 | 2022-10-04 | 中国石油天然气股份有限公司 | Screening method and device for convection-communicated old cavity |
| CN111749733A (en) * | 2019-03-28 | 2020-10-09 | 中国石油天然气集团有限公司 | Method for rebuilding gas storage warehouse by communicating old cavity |
| CN111852565B (en) * | 2019-04-28 | 2022-06-03 | 中国石油天然气股份有限公司 | Method for discharging brine in accumulated residues at bottom and communication section of salt cavity of old well cavity |
| CN110306951B (en) * | 2019-07-05 | 2020-10-23 | 中国科学院武汉岩土力学研究所 | Method for replacing bottom-laying natural gas of U-shaped salt cavern gas storage |
| CN112036027A (en) * | 2020-08-28 | 2020-12-04 | 中国科学院武汉岩土力学研究所 | Method for calculating volume of dischargeable brine in sediment gap of salt cavern gas storage |
| CN112227985B (en) * | 2020-10-12 | 2021-10-22 | 中国科学院武汉岩土力学研究所 | Ultra-deep salt mine butt-joint well bittern-mining full-horizontal-section groove expanding method |
| CN115324528A (en) * | 2021-05-10 | 2022-11-11 | 中国石油天然气股份有限公司 | Operation method for storing gas by utilizing residual void space of salt cavern gas storage |
| CN113588306B (en) * | 2021-07-15 | 2022-07-19 | 江苏科技大学 | Experimental device and experimental method for gas storage of residues in bottom pit of old cavity for salt mining |
| CN114542957B (en) * | 2022-04-07 | 2024-03-22 | 重庆大学 | Method for storing carbon dioxide by using layered salt karst cavity |
| CN115095388B (en) * | 2022-06-23 | 2023-09-29 | 江苏苏盐井神股份有限公司 | Gas injection and brine discharge method for communicating well salt cavern compressed gas energy storage |
| CN115434675A (en) * | 2022-09-09 | 2022-12-06 | 中国科学院武汉岩土力学研究所 | Sediment gap type gas storage bottomless gas injection and production device and operation method |
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