CN106837322A - Shale reservoir into seam Capability index acquisition methods and device - Google Patents
Shale reservoir into seam Capability index acquisition methods and device Download PDFInfo
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- CN106837322A CN106837322A CN201710058645.4A CN201710058645A CN106837322A CN 106837322 A CN106837322 A CN 106837322A CN 201710058645 A CN201710058645 A CN 201710058645A CN 106837322 A CN106837322 A CN 106837322A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000010453 quartz Substances 0.000 claims description 20
- 230000035945 sensitivity Effects 0.000 claims description 18
- 239000004927 clay Substances 0.000 claims description 15
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of shale reservoir into seam Capability index acquisition methods and device, belongs to shale gas reservoir technical field.The shale reservoir includes into seam Capability index acquisition methods：Obtain the brittleness index and horizontal ground stress deviation coefficient of shale reservoir；Obtain the stress sensitive property coefficient of shale reservoir；Shale reservoir into seam Capability index is determined according to brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient.The shale reservoir that the present invention is provided improves the accuracy into seam Capability index of shale reservoir into seam capability acquisition method and device.
Description
Technical field
The present invention relates to shale gas reservoir technical field, more particularly to a kind of shale reservoir is into seam Capability index acquisition methods
And device.
Background technology
In shale gas reservoir technical field, it is generally the case that, it is necessary to shale reservoir into seam before hydraulic fracturing construction
Ability is evaluated, but, current also ununified both at home and abroad evaluation criterion and method.
Influence reservoir includes the development of horizontal ground stress deviation, shale fragility and intrinsic fracture system into the key factor of seam ability
State.In the prior art, it is that horizontal ground stress deviation, shale is crisp when being obtained into seam Capability index to shale reservoir
Property together with three combined factors of developmental condition of intrinsic fracture system so that obtain shale reservoir into seam merit rating refer to
Number.But, when this parameter of developmental condition of intrinsic fracture system is obtained, due to objective factor so that what is got naturally splits
The value for stitching the developmental condition of system is inaccurate, so as to cause the accuracy into seam Capability index of the shale reservoir for getting not high.
The content of the invention
The present invention provides a kind of shale reservoir into seam capability acquisition method and device, with improve shale reservoir into seam ability
The accuracy of index.
The embodiment of the present invention provides a kind of shale reservoir into seam Capability index acquisition methods, including：
Obtain the brittleness index and horizontal ground stress deviation coefficient of the shale reservoir；
Obtain the stress sensitive property coefficient of the shale reservoir；
The shale is determined according to the brittleness index, the horizontal ground stress deviation coefficient and the stress sensitive property coefficient
Reservoir into seam Capability index.
In an embodiment of the present invention, the stress sensitive property coefficient for obtaining the shale reservoir, including：
The axial compressive force of the shale reservoir is obtained, and obtains the longitudinal wave of the shale reservoir under the axial compressive force
Speed；
According to the axial compressive force and longitudinal velocity of wave, the application sensitivity coefficient is obtained.
In an embodiment of the present invention, it is described according to the axial compressive force and longitudinal velocity of wave, obtain the application quick
Perceptual coefficient, including：
Linear fit coefficient is determined according to the axial stress and longitudinal velocity of wave；
The stress sensitive property coefficient is determined according to the linear fit coefficient.
In an embodiment of the present invention, it is described that Linear Quasi syzygy is determined according to the axial stress and longitudinal velocity of wave
Number, including：
According to Vp=Ks·σA+C1Determine linear fit coefficient；
Wherein, VpRepresent longitudinal velocity of wave, KsRepresent linear fit coefficient, σARepresent axial compressive force, C1Represent first constant.
In an embodiment of the present invention, it is described that the velocity of wave stress sensitivity system is determined according to the linear fit coefficient
Number, including：
According to Ss=Ks/C2Determine the stress sensitive property coefficient；
Wherein, SsRepresent stress sensitive property coefficient, KsRepresent linear fit coefficient, C2Represent second constant.
In an embodiment of the present invention, it is described according to the brittleness index, the horizontal ground stress deviation coefficient and it is described should
Power sensitivity coefficient determines the shale reservoir into seam Capability index, including：
According to FI=B+Ss+SDDetermine the shale reservoir into seam Capability index；
Wherein, FI represents the shale reservoir into seam Capability index, and B represents the brittleness index, SsRepresent stress sensitive
Property coefficient, SDRepresent the horizontal ground stress deviation coefficient.
In an embodiment of the present invention, the brittleness index for obtaining the shale reservoir, including：
According to the B=Cquartz/(Cquartz+Cclay+Ccarbonate) obtain the brittleness index of the shale reservoir；
Wherein, B represents the brittleness index, CquartzRepresent the quartz content of the shale reservoir, CclayRepresent the page
The clay content of rock reservoir, CcarbonateRepresent the carbonate content of the shale reservoir.
In an embodiment of the present invention, the horizontal ground stress deviation coefficient for obtaining the shale reservoir, including：
According to SD=1/ (σH-σh) obtain the horizontal ground stress deviation coefficient of the shale reservoir；
Wherein, SDRepresent the horizontal ground stress deviation coefficient, σHRepresent the flatly maximum stress of the shale reservoir, σh
Represent the flatly minimum stress of the shale reservoir.
The embodiment of the present invention also provides a kind of shale reservoir into seam Capability index acquisition device, including：
Acquisition module, brittleness index and horizontal ground stress deviation coefficient for obtaining the shale reservoir；And obtain institute
State the stress sensitive property coefficient of shale reservoir；
Determining module, for according to the brittleness index, the horizontal ground stress deviation coefficient and the stress sensitivity system
Number determines the shale reservoir into seam Capability index.
In an embodiment of the present invention, the acquisition module, the axial compressive force specifically for obtaining the shale reservoir, and
Obtain longitudinal velocity of wave of the shale reservoir under the axial compressive force；According to the axial compressive force and longitudinal velocity of wave, obtain
The application sensitivity coefficient.
In an embodiment of the present invention, the acquisition module, specifically for according to the axial stress and the longitudinal wave
Speed determines linear fit coefficient；The stress sensitive property coefficient is determined according to the linear fit coefficient.
In an embodiment of the present invention, the acquisition module, specifically for according to Vp=Ks·σA+C1Determine linear fit
Coefficient.
Wherein, VpRepresent longitudinal velocity of wave, KsRepresent linear fit coefficient, σARepresent axial compressive force, C1Represent first constant.
In an embodiment of the present invention, the acquisition module, specifically for according to Ss=Ks/C2Determine the stress sensitive
Property coefficient.
Wherein, SsRepresent stress sensitive property coefficient, KsRepresent linear fit coefficient, C2Represent second constant.
In an embodiment of the present invention, the determining module, specifically for according to FI=B+Ss+SDDetermine the shale storage
Layer into seam Capability index；
Wherein, FI represents the shale reservoir into seam Capability index, and B represents the brittleness index, SsRepresent stress sensitive
Property coefficient, SDRepresent the horizontal ground stress deviation coefficient.
In an embodiment of the present invention, the acquisition module, specifically for according to the B=Cquartz/(Cquartz+Cclay+
Ccarbonate) obtain the brittleness index of the shale reservoir；
Wherein, B represents the brittleness index, CquartzRepresent the quartz content of the shale reservoir, CclayRepresent the page
The clay content of rock reservoir, CcarbonateRepresent the carbonate content of the shale reservoir.
In an embodiment of the present invention, the acquisition module, specifically for according to SD=1/ (σH-σh) obtain the shale
The horizontal ground stress deviation coefficient of reservoir；
Wherein, SDRepresent the horizontal ground stress deviation coefficient, σHRepresent the flatly maximum stress of the shale reservoir, σh
Represent the flatly minimum stress of the shale reservoir.
Shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition methods and device, by obtaining shale reservoir
Brittleness index and horizontal ground stress deviation coefficient, and obtain the stress sensitive property coefficient of shale reservoir；Further according to brittleness index, water
Level land stress difference coefficient and stress sensitive property coefficient determine shale reservoir into seam Capability index.As can be seen here, the embodiment of the present invention
The shale reservoir of offer, into seam Capability index acquisition methods, is by brittleness index, horizontal ground stress deviation coefficient and stress sensitive
Property coefficient determines shale reservoir into seam Capability index three parameter determinations, so as to improve shale reservoir into seam Capability index
Accuracy, it is and workable.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description does one and simply introduces, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of the shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition methods；
Fig. 2 is that another shale reservoir provided in an embodiment of the present invention is illustrated into the flow of seam Capability index acquisition methods
Figure；
Fig. 3 is a kind of schematic diagram for obtaining longitudinal velocity of wave provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic flow sheet for obtaining application sensitivity coefficient provided in an embodiment of the present invention；
Fig. 5 is the relation schematic diagram between a kind of axial stress provided in an embodiment of the present invention and longitudinal velocity of wave；
Fig. 6 is a kind of structural representation of the shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition device 60
Figure.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd ", " in description and claims of this specification and above-mentioned accompanying drawing
Four " etc. (if present) is for distinguishing similar object, without for describing specific order or precedence.Should manage
Solution so data for using can be exchanged in the appropriate case, so as to embodiments of the invention described herein, for example can be with
Order in addition to those for illustrating herein or describing is implemented.Additionally, term " comprising " and " having " and they appoint
What deforms, it is intended that covering is non-exclusive to be included, for example, contain the process of series of steps or unit, method, system,
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for
These processes, method, product or other intrinsic steps of equipment or unit.
It should be noted that these specific embodiments can be combined with each other below, for same or analogous concept
Or process may be repeated no more in certain embodiments.
Fig. 1 is a kind of schematic flow sheet of the shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition methods,
The shale reservoir can be performed by shale reservoir into seam Capability index acquisition methods into seam Capability index acquisition device, example,
The shale reservoir into seam Capability index acquisition device can be separately provided, it is also possible to it is integrated within a processor.Refer to Fig. 1 institutes
Show, the shale reservoir can include into seam Capability index acquisition methods：
S101, the brittleness index and horizontal ground stress deviation coefficient that obtain shale reservoir.
Example, in embodiments of the present invention, shaft bottom rock core to be measured can be first collected, drill through the sample of Φ 25*50mm
Product, then it is 320 mesh powder that the fragment that will be bored during sample is crushed, and is then placed in drying chamber and is dried, drying room temperature is set to
105 degrees Celsius, drying time depending on rock sample size, re-test mineralogical composition, so as to determining shale reservoir according to mineralogical composition
Brittleness index.Certainly, the embodiment of the present invention is to be illustrated so that 320 mesh and drying room temperature are set to 105 degrees Celsius as an example,
But do not represent present invention is limited only by this.
S102, the stress sensitive property coefficient for obtaining shale reservoir.
Wherein, the stress sensitive property coefficient refer to rock under stress, natural fissure closure so that velocity of wave is increased
Speed.
It should be noted that in embodiments of the present invention, sequencing is had no between S101 and S102, can first carry out
S101, then S102 is performed, it is of course also possible to first carry out S102, then S101 being performed, the embodiment of the present invention is to first carry out
S101, then perform and illustrate as a example by S102, but do not represent present invention is limited only by this.
S103, determined according to brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient shale reservoir into seam energy
Power index.
After the brittleness index, horizontal ground stress deviation coefficient and the stress sensitive property coefficient that get shale reservoir respectively,
Just can be according to these three parameter determination shale reservoirs into seam Capability index, so as to be evaluated into seam ability shale reservoir.
Shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition methods, by the fragility for obtaining shale reservoir
Index and horizontal ground stress deviation coefficient, and obtain the stress sensitive property coefficient of shale reservoir；Further according to brittleness index, flatly should
Power difference coefficient and stress sensitive property coefficient determine shale reservoir into seam Capability index.As can be seen here, it is provided in an embodiment of the present invention
Shale reservoir, into seam Capability index acquisition methods, is by brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient
Determine shale reservoir into seam Capability index three parameter determinations, so as to improve shale reservoir into the accurate of seam Capability index
Property, and it is workable.
It is further, shown in Figure 2 on the basis of the corresponding embodiments of Fig. 1 based on the corresponding embodiments of Fig. 1,
Fig. 2 is schematic flow sheet of another shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition methods, certainly, this
Inventive embodiments are to be illustrated by taking Fig. 2 as an example, but are not represented present invention is limited only by this.The shale reservoir into seam ability
Index acquisition methods can include：
S201, the brittleness index and horizontal ground stress deviation coefficient that obtain shale reservoir.
Optionally, in embodiments of the present invention, by choosing shale samples to be measured, 320 mesh powder are crushed into, then
Test is obtained after mineralogical composition, can be according to B=Cquartz/(Cquartz+Cclay+Ccarbonate) obtain shale reservoir fragility
Index.
Wherein, B represents brittleness index, CquartzRepresent the quartz content of shale reservoir, CclayRepresent the clay of shale reservoir
Content, CcarbonateRepresent the carbonate content of shale reservoir.
Optionally, in embodiments of the present invention, can by searching related data, with determine shale reservoir flatly most
Big stress and minimum stress, after flatly maximum stress and minimum stress determine, it is possible to according to SD=1/ (σH-σh) obtain
Take the horizontal ground stress deviation coefficient of shale reservoir.
Wherein, SDRepresent horizontal ground stress deviation coefficient, σHRepresent the flatly maximum stress of shale reservoir, σhRepresent shale
The flatly minimum stress of reservoir.
The axial compressive force of S202, acquisition shale reservoir, and obtain longitudinal velocity of wave of shale reservoir under axial compressive force.
Example, shown in Figure 3, Fig. 3 is a kind of schematic diagram for obtaining longitudinal velocity of wave provided in an embodiment of the present invention.
Apply axial compressive force in one end 301 of cylinder sample 30, and the vertical of shale reservoir under axial compressive force is detected by velocity of wave sensor 302
To velocity of wave.
In embodiments of the present invention, shale can be first drilled through, the shale that will be drilled through is placed on press, in axial pressure process
Longitudinal velocity of wave of middle test axial direction, in whole pressure process, its axial compressive force is gradually increased to 30MPa, and is progressively pressurizeing
During, can may thereby determine that shale is stored up every longitudinal velocity of wave of 2MPa test shale reservoirs under the axial compressive force
Layer axial compressive force and under the axial compressive force shale reservoir longitudinal velocity of wave.
It should be noted that in embodiments of the present invention, simply being said so that axial compressive force is gradually increased to 30MPa as an example
It is bright, it is of course also possible to be any value in the range of 20MPa to 50MPa, here, the present invention is not particularly limited.Additionally, it is determined that
During longitudinal velocity of wave, the embodiment of the present invention be by every 2MPa tests under the axial compressive force as a example by longitudinal velocity of wave of shale reservoir
Illustrate, it is of course also possible to be 1MPa or 3MPa, can specifically be configured according to actual needs, here, the present invention is not
Do and further limit.
S203, according to axial compressive force and longitudinal velocity of wave, sensitivity coefficient is applied in acquisition.
Wherein, the stress sensitive property coefficient refer to rock under stress, natural fissure closure so that velocity of wave is increased
Speed.
After axial compressive force and longitudinal velocity of wave is got, it is possible to determine application according to the axial compressive force and longitudinal velocity of wave
Sensitivity coefficient.
S204, determined according to brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient shale reservoir into seam energy
Power index.
Optionally, after brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient is got respectively, so that it may
With according to FI=B+Ss+SDDetermine shale reservoir into seam Capability index.
Wherein, FI represents shale reservoir into seam Capability index, and B represents brittleness index, SsRepresent stress sensitive property coefficient, SD
Represent horizontal ground stress deviation coefficient.
As can be seen here, shale reservoir provided in an embodiment of the present invention, into seam Capability index acquisition methods, is referred to by fragility
Several, horizontal ground stress deviation coefficient and stress sensitive property coefficient determine shale reservoir into seam three parameter determinations of Capability index, from
And the accuracy into seam Capability index of shale reservoir is improve, it is and workable.
Further, in embodiments of the present invention, S203 obtains application sensitiveness system according to axial compressive force and longitudinal velocity of wave
Number can be realized by following possible mode, shown in Figure 4, and Fig. 4 should for a kind of acquisition provided in an embodiment of the present invention
With the schematic flow sheet of sensitivity coefficient.
S401, linear fit coefficient is determined according to axial stress and longitudinal velocity of wave.
Optionally, it is shown in Figure 5, Fig. 5 be a kind of axial stress provided in an embodiment of the present invention and longitudinal velocity of wave it
Between relation schematic diagram.After axial stress and longitudinal velocity of wave is got, it is possible to according to Vp=Ks·σA+C1It is determined that linear
Fitting coefficient.
Wherein, VpRepresent longitudinal velocity of wave, KsRepresent linear fit coefficient, σARepresent axial compressive force, C1Represent first constant.
S402, according to linear fit coefficient identified sign sensitivity coefficient.
Optionally, after linear fit coefficient is got by S301, it is possible to according to Ss=Ks/C2Identified sign is quick
Perceptual coefficient.
Wherein, SsRepresent stress sensitive property coefficient, KsRepresent linear fit coefficient, C2Represent second constant.
Example, in embodiments of the present invention, C2Value be 50, you can with according to Ss=Ks/ 50 identified sign sensitiveness systems
Number, certainly, the embodiment of the present invention is with C2Value to illustrate as a example by 50, can specifically be set according to actual needs
Put, here, the present invention does not do further limiting.
Fig. 6 is a kind of structural representation of the shale reservoir provided in an embodiment of the present invention into seam Capability index acquisition device 60
Figure, certainly, the embodiment of the present invention is to be illustrated by taking Fig. 6 as an example, but is not represented present invention is limited only by this.Refer to figure
Shown in 6, the shale reservoir can include into seam Capability index acquisition device 60：
Acquisition module 601, for obtaining the brittleness index and horizontal ground stress deviation coefficient of shale reservoir and obtaining shale
The stress sensitive property coefficient of reservoir.
Determining module 602, for determining shale according to brittleness index, horizontal ground stress deviation coefficient and stress sensitive property coefficient
Reservoir into seam Capability index.
Optionally, acquisition module 601, specifically for obtaining the axial compressive force of shale reservoir, and obtain axial compressive force nextpage
Longitudinal velocity of wave of rock reservoir；According to axial compressive force and longitudinal velocity of wave, sensitivity coefficient is applied in acquisition.
Optionally, acquisition module 601, specifically for determining linear fit coefficient according to axial stress and longitudinal velocity of wave；Root
According to linear fit coefficient identified sign sensitivity coefficient.
Optionally, acquisition module 601, specifically for according to Vp=Ks·σA+C1Determine linear fit coefficient.
Wherein, VpRepresent longitudinal velocity of wave, KsRepresent linear fit coefficient, σARepresent axial compressive force, C1Represent first constant.
Optionally, acquisition module 601, specifically for according to Ss=Ks/C2Identified sign sensitivity coefficient.
Wherein, SsRepresent stress sensitive property coefficient, KsRepresent linear fit coefficient, C2Represent second constant.
Optionally, determining module 602, specifically for according to FI=B+Ss+SDDetermine shale reservoir into seam Capability index.
Wherein, FI represents shale reservoir into seam Capability index, and B represents brittleness index, SsRepresent stress sensitive property coefficient, SD
Represent horizontal ground stress deviation coefficient.
Optionally, acquisition module 601, specifically for according to B=Cquartz/(Cquartz+Cclay+Ccarbonate) obtain shale
The brittleness index of reservoir.
Wherein, B represents brittleness index, CquartzRepresent the quartz content of shale reservoir, CclayRepresent the clay of shale reservoir
Content, CcarbonateRepresent the carbonate content of shale reservoir.
Optionally, acquisition module 601, specifically for according to SD=1/ (σH-σh) obtain shale reservoir horizontal ground stress deviation
Coefficient.
Wherein, SDRepresent horizontal ground stress deviation coefficient, σHRepresent the flatly maximum stress of shale reservoir, σhRepresent shale
The flatly minimum stress of reservoir.
Shale reservoir shown in the embodiment of the present invention can perform above method implementation into seam Capability index acquisition device 60
Technical scheme shown in example, its realization principle and beneficial effect are similar, are no longer repeated herein.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of shale reservoir into seam Capability index acquisition methods, it is characterised in that including：
Obtain the brittleness index and horizontal ground stress deviation coefficient of the shale reservoir；
Obtain the stress sensitive property coefficient of the shale reservoir；
The shale reservoir is determined according to the brittleness index, the horizontal ground stress deviation coefficient and the stress sensitive property coefficient
Into seam Capability index.
2. method according to claim 1, it is characterised in that the stress sensitivity system of the acquisition shale reservoir
Number, including：
The axial compressive force of the shale reservoir is obtained, and obtains longitudinal velocity of wave of the shale reservoir under the axial compressive force；
According to the axial compressive force and longitudinal velocity of wave, the application sensitivity coefficient is obtained.
3. method according to claim 2, it is characterised in that described according to the axial compressive force and longitudinal velocity of wave,
The application sensitivity coefficient is obtained, including：
Linear fit coefficient is determined according to the axial stress and longitudinal velocity of wave；
The stress sensitive property coefficient is determined according to the linear fit coefficient.
4. method according to claim 3, it is characterised in that described true according to the axial stress and longitudinal velocity of wave
Constant linear fitting coefficient, including：
According to Vp=Ks·σA+C1Determine linear fit coefficient；
Wherein, VpRepresent longitudinal velocity of wave, KsRepresent linear fit coefficient, σARepresent axial compressive force, C1Represent first constant.
5. method according to claim 3, it is characterised in that described that the velocity of wave is determined according to the linear fit coefficient
Stress sensitive property coefficient, including：
According to Ss=Ks/C2Determine the stress sensitive property coefficient；
Wherein, SsRepresent stress sensitive property coefficient, KsRepresent linear fit coefficient, C2Represent second constant.
6. method according to claim 1, it is characterised in that described according to the brittleness index, the horizontal crustal stress
Difference coefficient and the stress sensitive property coefficient determine the shale reservoir into seam Capability index, including：
According to FI=B+Ss+SDDetermine the shale reservoir into seam Capability index；
Wherein, FI represents the shale reservoir into seam Capability index, and B represents the brittleness index, SsRepresent stress sensitivity system
Number, SDRepresent the horizontal ground stress deviation coefficient.
7. method according to claim 1, it is characterised in that the brittleness index of the acquisition shale reservoir, including：
According to the B=Cquartz/(Cquartz+Cclay+Ccarbonate) obtain the brittleness index of the shale reservoir；
Wherein, B represents the brittleness index, CquartzRepresent the quartz content of the shale reservoir, CclayRepresent the shale storage
The clay content of layer, CcarbonateRepresent the carbonate content of the shale reservoir.
8. method according to claim 1, it is characterised in that the horizontal ground stress deviation system of the acquisition shale reservoir
Number, including：
According to SD=1/ (σH-σh) obtain the horizontal ground stress deviation coefficient of the shale reservoir；
Wherein, SDRepresent the horizontal ground stress deviation coefficient, σHRepresent the flatly maximum stress of the shale reservoir, σhRepresent
The flatly minimum stress of the shale reservoir.
9. a kind of shale reservoir into seam Capability index acquisition device, it is characterised in that including：
Acquisition module, brittleness index and horizontal ground stress deviation coefficient for obtaining the shale reservoir；And obtain the page
The stress sensitive property coefficient of rock reservoir；
Determining module, for true according to the brittleness index, the horizontal ground stress deviation coefficient and the stress sensitive property coefficient
Determine the shale reservoir into seam Capability index.
10. device according to claim 9, it is characterised in that
The acquisition module, specifically for obtaining the axial compressive force of the shale reservoir, and obtains described under the axial compressive force
Longitudinal velocity of wave of shale reservoir；According to the axial compressive force and longitudinal velocity of wave, the application sensitivity coefficient is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710058645.4A CN106837322A (en) | 2017-01-23 | 2017-01-23 | Shale reservoir into seam Capability index acquisition methods and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058645.4A CN106837322A (en) | 2017-01-23 | 2017-01-23 | Shale reservoir into seam Capability index acquisition methods and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107153096A (en) * | 2017-06-23 | 2017-09-12 | 中国石油大学(北京) | Shale reservoir into seam aptitude tests method and device |
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