CN110005407A - Salt hole air reserved storeroom method for estimating stability - Google Patents
Salt hole air reserved storeroom method for estimating stability Download PDFInfo
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- CN110005407A CN110005407A CN201910380747.7A CN201910380747A CN110005407A CN 110005407 A CN110005407 A CN 110005407A CN 201910380747 A CN201910380747 A CN 201910380747A CN 110005407 A CN110005407 A CN 110005407A
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- 150000003839 salts Chemical class 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 29
- 235000002639 sodium chloride Nutrition 0.000 claims abstract description 155
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000011780 sodium chloride Substances 0.000 claims abstract description 21
- 238000011156 evaluation Methods 0.000 claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000004088 simulation Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 40
- 238000012360 testing method Methods 0.000 claims description 21
- 239000003345 natural gas Substances 0.000 claims description 20
- 239000011435 rock Substances 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 12
- 230000008602 contraction Effects 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 208000035126 Facies Diseases 0.000 claims description 2
- 238000001467 acupuncture Methods 0.000 claims description 2
- 238000001739 density measurement Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 239000000700 radioactive tracer Substances 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000002950 deficient Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 2
- 238000013097 stability assessment Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- 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
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- 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)
Abstract
The invention belongs to petrol resources exploitation fields, and in particular, to a kind of salt hole air reserved storeroom method for estimating stability.Salt hole air reserved storeroom method for estimating stability, comprising the following steps: S1, rock salt stratum crustal stress obtain；S2, structure parameters of soil layer obtain；S3, rock salt physical and mechanical parameter obtain；S4, salt hole air reserved storeroom 3D shape parameter and temperature obtain；S5, estimation of stability index determine；S6, salt hole air reserved storeroom three-dimensional geological mechanical model is established and simulation calculation；S7, field monitoring and the calibration of estimation of stability index.Compared with the existing technology, the invention has the following beneficial effects: the estimation of stability for being suitable for salt hole air reserved storeroom；Evaluation procedure is simple, evaluation index is clear, strong operability, it may be implemented to carry out quantitative assessment to salt hole air reserved storeroom stability, the reasonable operating parameter of optimization can also provide reasonable measure according to estimation of stability result to improve the stability in salt cave to prevent the unstable failure that salt hole air reserved storeroom may occur.
Description
Technical field
The invention belongs to petrol resources exploitation fields, and in particular, to a kind of salt hole air reserved storeroom method for estimating stability.
Background technique
In such a way that salt cave progress petroleum, natural gas, compressed air storage have become energy storage general in the world,
China also relatively broad promotion and application.The salt cave volume of oil and natural gas storage can generally reach hundreds of thousands
How all places square or even up to a hundred ensure that its stability is most important.Foreign countries have occurred and that the case of tens salt cave unstable failures,
Caused by loss it is huge.Due to salt cave shown in failure process typical brittle break (chip off-falling, wall caving, cracking) and
Plastic failure (volume contraction, bottom of chamber protuberance and cavity wall large deformation) feature, brings technology to choose to Accurate Prediction salt cave unstable failure
War.Simultaneously as salt cave is normally at the even upper km of the several hundred rice in underground, belong to hidden nurse's journey, lacks effective, monitoring in real time
Means.Currently, salt hole air reserved storeroom estimation of stability is primarily present following technical problem:
(1) the specification process and step of deficient in stability evaluation.Since salt hole air reserved storeroom estimation of stability is a system
Engineering, the sequence containing many steps and these steps may also can be different according to the personal preference of operator, this just gives salt
Hole air reserved storeroom estimation of stability brings many uncertainties.For example, different evaluation personnel obtain for same salt hole air reserved storeroom
Evaluation result may different or even conclusion it is completely opposite.
(2) required parameter list in deficient in stability evaluation procedure.It is needed during salt hole air reserved storeroom estimation of stability
A large amount of relevant parameter is used, these parameters need to obtain by field monitoring or laboratory experiment, and required time is longer.
If detailed, accurate parameter list cannot be provided before salt hole air reserved storeroom estimation of stability, it will seriously affect and lag
The development of salt hole air reserved storeroom estimation of stability work.And it can use for reference and refer to there has been no relevant parameter inventory at present.
(3) deficient in stability assessment indicator system.Salt hole air reserved storeroom stability Failure type is more, including ductile fracture,
Brittle break, bobbin seal failure damage and salt cave cavity leakproofness (cavity wall unstability causes) failure damage.This makes traditional
Estimation of stability index system is unable to the destruction of Accurate Prediction salt hole air reserved storeroom stability, cannot be to salt hole air reserved storeroom stability control
Parameter optimizes.
It needs to invent a kind of salt hole air reserved storeroom method for estimating stability for these reasons, it is steady to solve current salt hole air reserved storeroom
Required parameter list in the specification process and step, deficient in stability evaluation procedure that deficient in stability is evaluated during qualitative evaluation
With the problem of deficient in stability assessment indicator system, guarantee to ensure that China's salt hole air reserved storeroom provides safely technology.
Summary of the invention
For lack during salt hole air reserved storeroom estimation of stability corresponding specification process and step, required parameter list and
The problem of assessment indicator system, the present invention provides a kind of salt hole air reserved storeroom method for estimating stability, solve above-mentioned problem, so that
Salt hole air reserved storeroom estimation of stability has Zhang Keyi.
To achieve the above object, the present invention adopts the following technical scheme:
Salt hole air reserved storeroom method for estimating stability, comprising the following steps:
S1, rock salt stratum crustal stress obtain
S2, structure parameters of soil layer obtain
S3, rock salt physical and mechanical parameter obtain
S4, salt hole air reserved storeroom 3D shape parameter and temperature obtain
S5, estimation of stability index determine
S6, salt hole air reserved storeroom three-dimensional geological mechanical model is established and simulation calculation
S7, field monitoring and the calibration of estimation of stability index.
Compared with the existing technology, the invention has the following beneficial effects: the present invention to be suitable for salt hole air reserved storeroom, the oil storage of salt cave
The estimation of stability in library, salt cave compression energy accumulation library, salt cave waste treatment library；Evaluation procedure is simple, evaluation index is clear, can grasp
The property made is strong, may be implemented to carry out quantitative assessment to salt hole air reserved storeroom stability, the reasonable operating parameter of optimization is to improve salt cave
Stability, while it is broken to prevent the unstability that salt cave may occur that reasonable measure can also be provided according to estimation of stability result
It is bad.
Detailed description of the invention
Fig. 1 is salt hole air reserved storeroom structural schematic diagram；
In figure: 1, ground well head injection-recovery apparatus, 2, injection-production column jacket, 3, completion tubular column, 4, superstratum, 5, packer, 6,
Casing shoe, 7, well neck, 8, salt cave, 9, rock salt stratum, 10, insoluble matter sediment, 11, lower sleeping stratum.
Specific embodiment
As shown in Figure 1, salt hole air reserved storeroom, comprising: ground well head injection-recovery apparatus 1, injection-production column jacket 2, completion tubular column 3；Ground
Well head injection-recovery apparatus 1 is located at earth's surface, the injection and extraction for natural gas；It is ground well head injection-recovery apparatus 1 and injection-production column jacket 2, complete
It is connected at the top of well casing column 3；It is connected at the top of 2 bottom of injection-production column jacket and salt cave 8, natural gas can be injected and produced into salt cave 8；Note
Tubing string 2 is adopted to be located in completion tubular column 3, injection-production column jacket 2 completion tubular column lower part by packer 5 be connected；Completion tubular column 3 is located at
Casing shoe 6 is arranged at superstratum 4 and rock salt stratum 9, completion tubular column bottom, and casing shoe 6 is located in rock salt stratum；3 bottom of completion tubular column
Portion is connected with salt cave 8 by well neck 7, and Jing Bozichu can bear alternation note gas production load action in note gas production process；It is insoluble
Object sediment 10 is located at salt cave bottom；Sleeping stratum 11 is located at salt cave lower part down.
Above-mentioned salt hole air reserved storeroom method for estimating stability, comprising the following steps:
S1, rock salt stratum crustal stress obtain
It beats Vertical Well to salt hole air reserved storeroom and builds library destination layer position, carry out small volume hydraulic fracture experiment to obtain in rock salt stratum
Crustal stress value and its gradient；For crustal stress value in accurate description rock salt stratum and its gradient distribution rule, need same
No less than 3 layer positions are chosen at wellbore different depth position carries out detecting earth stress；In order to reduce single measurement error to final
The influence of detecting earth stress result has each layer of position altogether when carrying out detecting earth stress using small volume hydraulic fracture experiment
Need to carry out no less than 5 crack opened/closed tests；
Crustal stress is obtained using small volume hydraulic fracture and its gradient distribution rule can be salt hole air reserved storeroom estimation of stability
Boundary condition is provided in calculating process；
S2, structure parameters of soil layer obtain
The Geologic Structure Feature of salt hole air reserved storeroom build area is determined using 3-d seismic exploration technology, comprising: rock salt
Top surface, rock salt bottom surface, rock salt thickness distribution, sedimentary facies belt distribution, formation fault distribution；
S3, rock salt physical and mechanical parameter obtain
By drilling well, coring operation is carried out, base area formation core is built in acquisition；Coring range is from earth's surface until Salt layer
100m below bottom surface obtains the core sample of overlying rock, Salt layer and lower sleeping stratum；According to " hydraulic and hydroelectric engineering rock examination
Test regulation (DLJ 204-81) " in requirement, above-mentioned rock core is processed into the standard sample of different experiments types entail；To these
Sample carries out density measurement, component is tested, permeability test, porosity test, uniaxial compressive strength is tested, tensile strength is surveyed
Examination, internal friction angle test, cohesion test, secondary creep rates test, shearing strength test, breakthrough pressure test；In order to protect
The reliability for demonstrate,proving experimental result is 3~5 pieces to the sample that Rock Mechanics Test under identical conditions is tested；
S4, salt hole air reserved storeroom 3D shape parameter and temperature obtain
The 3D shape of salt hole air reserved storeroom is measured using chamber equipment is surveyed, obtaining cavity geometry parameter includes: salt cave
Top buried depth, salt cave bottom buried depth, salt cave height, salt cave maximum radius；According to survey when the 3-d shape measurement of salt hole air reserved storeroom
It is adjusted when dose-effect fruit and measures angular interval on measurement spacing and horizontal plane on vertical plane, chamber can be determined according to measurement result
The D coordinates value of each point of wall；Salt cave top, salt cave bottom temp are surveyed using the temperature sensor surveyed in chamber equipment
Amount；
S5, estimation of stability index determine
Destroyed due to rock salt and salt cave and show typical brittleness and plastic failure feature simultaneously, choose cut swollen safety coefficient,
Equivalent strain, deflection, cubical contraction, plastic zone are as salt hole air reserved storeroom estimation of stability index；In view of completion tubular column
At the top of salt cave, axial tension mainly occurs under the effect of salt cave volume contraction load and destroys, chooses completion tubular column and axially answers
It is changed into as safety evaluation index；Salt hole air reserved storeroom occurs leakproofness failure and is mainly shown as that seepage range is worn more than limit value, fluid
Saturating superstratum chooses natural gas and penetrates safety coefficient, natural gas seepage range as safety evaluation index；In conjunction with specific salt cave
Earth formation, rock physical and mechanic parameter, salt hole air reserved storeroom 3D shape parameter and the storage of salt cave of gas storage place formation at target locations
Air reservoir operating parameter determines the corresponding margin of safety of These parameters；
S6, salt hole air reserved storeroom three-dimensional geological mechanical model is established and simulation calculation
According to earth formation, rock physics mechanics and salt hole air reserved storeroom 3D shape parameter where salt hole air reserved storeroom, establish
Three-dimensional geological mechanical model；The model is a cuboid, and Salt layer is located among model, and salt acupuncture point is in the centre of Salt layer；
Effect has corresponding internal design pressure in salt hole air reserved storeroom；Overburden pressure is applied at the top of three-dimensional geological mechanical model；It is three-dimensional
Horizontal direction constraint is applied on four vertical planes of geomechanics model, limited model occurs horizontal distortion, in vertical direction may be used
Free vertical deformation occurs；Three-dimensional geological mechanical model bottom is applied with fixed constraint, and horizontal and vertical deformation occurs for limitation；
Initial field stress and in-situ stress gradient are applied to model, value is tested by the small volume hydraulic fracture in S1 and obtained；The three-dimensional geological
Mechanical model needs to carry out grid dividing, needs the size of mesh opening independence to three-dimensional geological mechanical model, the receipts of calculated result
Holding back property and mesh quality are checked, it is ensured that the reliability of calculated result；The numerical simulation calculation time is according to " QSY1416-2011
Salt hole air reserved storeroom cavity design specification " it chooses；According to above-mentioned three-dimensional geological mechanical model, boundary condition, load to the gas storage of salt cave
Stress, deformation, the seepage pressure of library country rock carry out simulation calculating；According to cutting swollen safety coefficient, equivalent strain, deflection, volume
Shrinking percentage, plastic zone, completion tubular column axial strain, natural gas penetrate safety coefficient, natural gas seepage range calculation formula, will count
It calculates and obtains stress, deformation, seepage pressure substitution, the corresponding numerical value of These parameters is calculated and draws out corresponding cloud atlas；Root
According to cut swollen safety coefficient, equivalent strain, deflection, cubical contraction, plastic zone, completion tubular column axial strain, natural gas penetrate
Safety coefficient, the criticality safety value of natural gas seepage range, evaluate salt hole air reserved storeroom stability, and according to evaluation result
Salt hole air reserved storeroom operating parameter is adjusted and is optimized；
S7, field monitoring and the calibration of estimation of stability index
Using surveying, measurement in chamber equipment 5 years every to salt hole air reserved storeroom is primary, obtains cubical contraction, the chamber of the salt hole air reserved storeroom
Wall deflection and cavity wall chip off-falling measurement result；The subsidence value of the salt hole air reserved storeroom is measured every year using GPS and level
Once, subsidence value is obtained；It is supervised using casing shoe and salt cave cavity leakproofness of the helium tracer to the salt hole air reserved storeroom
It surveys；Using the above-mentioned monitoring result in scene to cutting swollen safety coefficient, equivalent strain, deflection, cubical contraction, plastic zone, complete well
Tubing string axial strain, natural gas penetrate safety coefficient, the criticality safety value of natural gas seepage range is adjusted in real time, it is ensured that really
The science and reliability for the salt hole air reserved storeroom estimation of stability index fixed.
So far, deficient in stability is commented during can effectively solving salt hole air reserved storeroom estimation of stability using the method for the present invention
Parameter list needed for the specification process and step of valence, shortage, the problem for lacking assessment indicator system, have operating procedure it is clear,
The clear advantage of parameter value range.
Claims (8)
1. a kind of salt hole air reserved storeroom method for estimating stability, comprising the following steps:
S1, rock salt stratum crustal stress obtain
S2, structure parameters of soil layer obtain
S3, rock salt physical and mechanical parameter obtain
S4, salt hole air reserved storeroom 3D shape parameter and temperature obtain
S5, estimation of stability index determine
S6, salt hole air reserved storeroom three-dimensional geological mechanical model is established and simulation calculation
S7, field monitoring and the calibration of estimation of stability index.
2. salt hole air reserved storeroom method for estimating stability according to claim 1, which is characterized in that specific step is as follows by S1:
It beats Vertical Well to salt hole air reserved storeroom and builds library destination layer position, carry out small volume hydraulic fracture experiment to obtain crustal stress value in rock salt stratum
And its gradient, it needs to choose no less than 3 layer positions at the same wellbore different depth position and carries out detecting earth stress；It is using
When small volume hydraulic fracture experiment carries out detecting earth stress, each layer of position is needed altogether to carry out no less than 5 cracks to open/close
Close test.
3. salt hole air reserved storeroom method for estimating stability according to claim 1 to 2, which is characterized in that S2 specific steps are such as
Under: the Geologic Structure Feature of salt hole air reserved storeroom build area is determined using 3-d seismic exploration technology, comprising: rock salt top surface,
Rock salt bottom surface, rock salt thickness distribution, sedimentary facies belt distribution, formation fault distribution.
4. salt hole air reserved storeroom method for estimating stability according to claim 1 to 3, which is characterized in that S3 specific steps are such as
Under: by drilling well, coring operation is carried out, base area formation core is built in acquisition；Coring range is from earth's surface until Salt layer bottom surface
Following 100m obtains the core sample of overlying rock, Salt layer and lower sleeping stratum；According to " hydraulic and hydroelectric engineering rock test rule
Journey (DLJ 204-81) " in requirement, above-mentioned rock core is processed into the standard sample of different experiments types entail；To above-mentioned standard
Sample carries out density measurement, component is tested, permeability test, porosity test, uniaxial compressive strength is tested, tensile strength is surveyed
Examination, internal friction angle test, cohesion test, secondary creep rates test, shearing strength test, breakthrough pressure test, to same
Under the conditions of Rock Mechanics Test test sample be 3~5 pieces.
5. salt hole air reserved storeroom method for estimating stability described in -4 according to claim 1, which is characterized in that S4 specific steps are such as
Under: the 3D shape of salt hole air reserved storeroom is measured, obtaining cavity geometry parameter includes: buried depth, salt cave bottom at the top of salt cave
Buried depth, salt cave height, salt cave maximum radius；It is adjusted in real time vertically when the 3-d shape measurement of salt hole air reserved storeroom according to measurement effect
Angular interval is measured in measurement spacing and horizontal plane on face, the D coordinates value of each point of cavity wall is determined according to measurement result；
Salt cave top, salt cave bottom temp are measured using the temperature sensor surveyed in chamber equipment.
6. salt hole air reserved storeroom method for estimating stability described in -5 according to claim 1, which is characterized in that S5 specific steps are such as
Under: selection cuts swollen safety coefficient, equivalent strain, deflection, cubical contraction, plastic zone as salt hole air reserved storeroom estimation of stability
Index chooses completion tubular column axial strain as safety evaluation index, chooses natural gas and penetrate safety coefficient, natural gas seepage flow model
It encloses as safety evaluation index；In conjunction with where specific salt hole air reserved storeroom the earth formation, rock physical and mechanic parameter of formation at target locations,
Salt hole air reserved storeroom 3D shape parameter and salt hole air reserved storeroom operating parameter determine the corresponding margin of safety of These parameters.
7. salt hole air reserved storeroom method for estimating stability described in -6 according to claim 1, which is characterized in that S6 specific steps are such as
Under: according to earth formation, rock physics mechanics and salt hole air reserved storeroom 3D shape parameter where salt hole air reserved storeroom, establish dimensionally
Matter mechanical model；The model is a cuboid, and Salt layer is located among model, and salt acupuncture point is in the centre of Salt layer；The storage of salt cave
Effect has corresponding internal design pressure in air reservoir；Overburden pressure is applied at the top of three-dimensional geological mechanical model；Three-dimensional geological power
It learns and is applied with horizontal direction constraint on four vertical planes of model, limited model occurs horizontal distortion, can occur in vertical direction
Free vertical deformation；Three-dimensional geological mechanical model bottom is applied with fixed constraint, and horizontal and vertical deformation occurs for limitation；To model
Apply initial field stress and in-situ stress gradient, value is tested by the small volume hydraulic fracture in S1 and obtained；The three-dimensional geological mechanics mould
Type needs to carry out grid dividing, need the size of mesh opening independence to three-dimensional geological mechanical model, the convergence of calculated result and
Mesh quality is checked, it is ensured that the reliability of calculated result；The numerical simulation calculation time is according to " QSY1416-2011 salt cave storage
Air reservoir cavity design specification " it chooses；According to above-mentioned three-dimensional geological mechanical model, boundary condition, load to salt hole air reserved storeroom country rock
Stress, deformation, seepage pressure carry out simulation calculating；According to cut swollen safety coefficient, equivalent strain, deflection, cubical contraction,
Plastic zone, completion tubular column axial strain, natural gas penetrate safety coefficient, natural gas seepage range calculation formula, obtain calculating
Stress, deformation, seepage pressure substitute into, and the corresponding numerical value of These parameters is calculated and draws out corresponding cloud atlas；It is swollen according to cutting
Safety coefficient, equivalent strain, deflection, cubical contraction, plastic zone, completion tubular column axial strain, natural gas penetrate safe system
The criticality safety value of number, natural gas seepage range, evaluates salt hole air reserved storeroom stability, and according to evaluation result to salt cave
Gas storage operating parameter is adjusted and optimizes.
8. salt hole air reserved storeroom method for estimating stability described in -7 according to claim 1, which is characterized in that S7 specific steps are such as
Under: using surveying, measurement in chamber equipment 5 years every to salt hole air reserved storeroom is primary, obtains the cubical contraction of the salt hole air reserved storeroom, cavity wall becomes
Shape amount and cavity wall chip off-falling measurement result；The subsidence value of the salt hole air reserved storeroom is measured once every year using GPS and level,
Obtain subsidence value；It is monitored using casing shoe and salt cave cavity leakproofness of the helium tracer to the salt hole air reserved storeroom；Benefit
With the above-mentioned monitoring result in scene to cutting swollen safety coefficient, equivalent strain, deflection, cubical contraction, plastic zone, completion tubular axis of a cylinder
To strain, natural gas penetrates safety coefficient, the criticality safety value of natural gas seepage range is adjusted in real time, it is ensured that determines
Salt hole air reserved storeroom estimation of stability index science and reliability.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110516977A (en) * | 2019-09-02 | 2019-11-29 | 中国科学院武汉岩土力学研究所 | Containing micro- infiltration layer salt hole air reserved storeroom group and its leakproofness evaluation method |
| CN112610275A (en) * | 2020-12-15 | 2021-04-06 | 中国科学院武汉岩土力学研究所 | Comprehensive evaluation index system and design method for gas production rate of salt cavern gas storage |
| CN112798196A (en) * | 2019-11-14 | 2021-05-14 | 中国石油天然气股份有限公司 | Method and device for monitoring leakage of underground gas storage |
| CN113155388A (en) * | 2021-04-26 | 2021-07-23 | 常州大学 | Salt rock gas reservoir takes intermediate layer chamber wall vibrations deformation simulation experiment device under fault effect |
| CN113266420A (en) * | 2021-04-30 | 2021-08-17 | 中国石油天然气股份有限公司 | Method for monitoring stability of salt cavern gas storage cavity |
| CN114060000A (en) * | 2021-11-08 | 2022-02-18 | 中国科学院武汉岩土力学研究所 | Shrinkage data processing method, device, equipment and system for injection-production string |
| CN114386134A (en) * | 2020-10-20 | 2022-04-22 | 中国石油天然气股份有限公司 | Salt cavern cavity evaluation method and device, computer equipment and storage medium |
| CN116415317A (en) * | 2023-02-24 | 2023-07-11 | 郑州大学 | Underground salt cavern hydrogen storage site selection coupling numerical simulation method |
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