CN106703798A - Shale heterogeneity classification and comparative method - Google Patents
Shale heterogeneity classification and comparative method Download PDFInfo
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- 238000012733 comparative method Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 23
- 239000011435 rock Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000002734 clay mineral Substances 0.000 claims description 7
- 230000000704 physical effect Effects 0.000 claims description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 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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Abstract
The invention discloses a shale heterogeneity classification and comparative method, which comprises:(1) building the isochronous stratigraphic comparison lattice for the vertical heterogeneity classification of the shale reservoir by the high-frequency sequence classification and comparation; (2) studying the macro heterogeneity in the isochronous stratigraphic comparison lattice and analyzing and establishing the vertical and horizontal change characteristics of the macro heterogeneity of different high-frequency sequences of the shale reservoir in the isochronous stratigraphic comparison lattice; (3) studying the micro heterogeneity in the isochronous stratigraphic comparison lattice and establishing the vertical and horizontal change characteristics of the micro heterogeneity of different high-frequency sequences of the shale reservoir; (4) classifying and comparing small layers, and conducting detailed classification of small layers in the isochronous stratigraphic comparison lattice according to the heterogeneity characteristics of the shale reservoir in research results of the macro heterogeneity and the micro heterogeneity. The method selects the shale reservoir with high heterogeneity both in vertical and lateral directions as stable and continuous output selecting layer and provides geological basis for shale gas' exploiting vertical selecting layer, plane division and development technique policy in the future.
Description
Technical field
Divided and control methods the present invention relates to shale gas development technique, more particularly to a kind of shale anisotropism.
Background technology
Five peaks of Fuling shale gas field Jiao one Qi Chanjian areas of the masonry dam block-Longma small stream group shale gas reservoir Development Practice of 2 years card
Different blocks possess different production capacities on real gas bearing shale section longitudinal direction difference interval peace face, and shale reservoir is confirmed by research
Vertically and horizontally anisotropism be to cause the main cause of this vertically and horizontally production capacity difference.
Traditional view thinks that shale homogenieity is stronger, and the anisotropism on shale reservoir not yet carried out grinding for system
Study carefully, whether the anisotropism on shale reservoir has the influence of key, those weights of shale reservoir to the production capacity of gassiness page gas reservoir
Want key parameter just can produce significant impact to the single well productivity of later stage shale gas well, be still not clear, shale reservoir it is non-
The division of matter is not yet established with control methods, and a series of problems hinders drawing for shale gas later development series of strata and developing zone
The development that the division of labor is made.
The content of the invention
The technical problem to be solved in the present invention is for defect of the prior art, there is provided a kind of shale anisotropism is drawn
Divide and control methods.
The technical solution adopted for the present invention to solve the technical problems is：A kind of shale anisotropism divide with to analogy
Method, including：
1）High frequency sequence is divided and contrast
According to areal geology situation, shale gas development zone by including petromineralogy, extinct plants and animal, authigenic mineral, electrically exist
Interior feature development high frequency sequence is divided and contrast work, stratum pair when being vertical heterogeneity division foundation of shale reservoir etc.
Compare screen work；
2）The research of macroscopic heterogeneity in isochronal formation cor-relation screen work
Using eustasy, paleoproductivity, material resource delivery rate, ancient landform as shale reservoir rock phase, formation thickness and electricity
Property feature vertically and horizontally anisotropism factor of influence, analyzed in isochronal formation cor-relation screen work and establish shale reservoir difference high frequency
Sequence section macroscopic heterogeneity vertically and horizontally variation characteristic (including shale lithologic character and lithofacies, change, Reservoir Characters), from rock
Mutually and for electrical property feature, phase marine invasion phase and bit field high early stage are the main period of high-quality shale reservoir development, thickness in plane
Distribution stabilization, is influenceed by eustasy, material resource delivery rate and ancient landform, and the formation thickness in bit field period high occurs in south
It is thinning.
3）The research of microheterogeneity in isochronal formation cor-relation screen work
Needed with reference to Shale Gas Accumulation study mechanism and later development research, by shale reservoir in chronostratigraphic architecture
TOC and clay mineral content carry out shale microheterogeneity（Shale pore structure of reservoir, physical property characteristic, gassiness
Property feature）Properties study, establishes different high frequency sequence section shale microheterogeneities vertically and horizontally variation characteristic, wherein, page
The TOC and clay mineral content of rock reservoir are the factor of influence of the physical property vertically and horizontally anisotropism of shale reservoir, and TOC is shale storage
The factor of influence of the vertically and horizontally anisotropism of layer gas-bearing property；
4）Division and correlation of substrata
It is special according to shale reservoir heterogeneity in both macro and micro anisotropism achievement in research in isochronal formation cor-relation screen work
Levy, carry out substratum and finely divide, lithology, thickness, change, preserve and gas-bearing property feature stability, choose vertically and horizontally homogenieity
Shale reservoir high selects layer as the exploitation of continuously steady production formula, and for the exploitation of the shale gas in later stage longitudinally select layer, plane subregion and
Developing value provides geologic basis.
The beneficial effect comprise that：The present invention proposes that one kind sets up isochronal formation cor-relation lattice by multiplicity
Shale reservoir heterogeneity divides the method with contrast in frame, have studied, and the anisotropism on shale reservoir is to gassiness page gas
The influence of the production capacity of Tibetan, it is proposed that shale reservoir can produce the important pass of significant impact to the single well productivity of later stage shale gas well
Bond parameter, can effectively shale gas later development series of strata and developing zone division work development.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is Fuling shale gas field five peaks of Jiao's masonry dam block-Longma small stream group SEQUENCE STRATIGRAPHIC DIVISION comparison diagram of the embodiment of the present invention；
Fig. 2 is that five peaks of the burnt masonry dam area-Longma small stream group gas bearing shale section macroscopic heterogeneity feature of the embodiment of the present invention is illustrated
Figure；
Fig. 3 is burnt five peaks of the masonry dam block-Longma small stream group gas bearing shale sector hole gap Type Synthesis block diagram of the embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, limit is not used to
The fixed present invention.
As shown in figure 1, a kind of shale anisotropism is divided and control methods, including：
1）High frequency sequence is divided and contrast
According to areal geology situation, shale gas development zone by including petromineralogy, extinct plants and animal, authigenic mineral, electrically exist
Interior feature development high frequency sequence is divided and contrast work, stratum pair when being vertical heterogeneity division foundation of shale reservoir etc.
Compare screen work；
2）The research of macroscopic heterogeneity in isochronal formation cor-relation screen work
Using eustasy, paleoproductivity, material resource delivery rate, ancient landform as shale reservoir rock phase, formation thickness and electricity
Property feature vertically and horizontally anisotropism factor of influence, analyzed in isochronal formation cor-relation screen work and establish shale reservoir difference high frequency
The vertically and horizontally variation characteristic of the macroscopic heterogeneity of sequence section（From for rock phase and electrical property feature, phase marine invasion phase and bit field high
Early stage is the main period of high-quality shale reservoir development, thickness distribution stabilization in plane, by eustasy, material resource delivery rate
And ancient landform influence, the formation thickness in bit field period high occurs in that thinning in south）
3）The research of microheterogeneity in isochronal formation cor-relation screen work
Needed with reference to Shale Gas Accumulation study mechanism and later development research, by shale reservoir in chronostratigraphic architecture
TOC and clay mineral content carry out shale microheterogeneity（Shale pore structure of reservoir, physical property characteristic, gassiness
Property feature）Properties study, establishes different high frequency sequence section shale microheterogeneities vertically and horizontally variation characteristic, wherein, page
The TOC and clay mineral content of rock reservoir are the factor of influence of the physical property vertically and horizontally anisotropism of shale reservoir, and TOC is shale storage
The factor of influence of the vertically and horizontally anisotropism of layer gas-bearing property；
4）Division and correlation of substrata
It is special according to shale reservoir heterogeneity in both macro and micro anisotropism achievement in research in isochronal formation cor-relation screen work
Levy, carry out substratum and finely divide, lithology, thickness, change, preserve and gas-bearing property feature stability, choose vertically and horizontally homogenieity
Shale reservoir high selects layer as the exploitation of continuously steady production formula, and for the exploitation of the shale gas in later stage longitudinally select layer, plane subregion and
Developing value provides geologic basis.
The content of invention according to more than, the technology is applied in Fuling shale gas field Jiao's masonry dam area, is effectively directed
Shale gas development, improves single well productivity, achieves good effect.
Illustrated by taking Jiao's masonry dam block of Fuling shale gas field as an example below.By SEQUENCE STRATIGRAPHIC DIVISION and contrast, set up
Isochronal formation cor-relation screen work, by shale reservoirs such as eustasy, paleoproductivity, material resource delivery rate, ancient landforms
Property Analysis The Main Control Factor, specify the longitudinally varying feature of shale reservoir both macro and micro anisotropism Dominated Factors, herein basis
Upper development Fine Layers are divided and contrast.
（1）High frequency sequence is divided and contrast
Calmodulin binding domain CaM geologic information, according to the feature such as lithology, life assemblage, authigenic mineral, electrical, Fuling shale gas field Jiao's masonry dam
Five peaks of block-Longma small stream group gas bearing shale section main body is deep shelf sedimentary subfacies, and deep water silicon shale can be marked off from bottom to top
The mixed product continental shelf of continental shelf, deep water sand shale continental shelf, deep water, deep water sand shale shelf deposit microfacies, can further be divided into 2 three-levels
Sequence, 3 fourth level sequences, 10 subsequences（Fig. 1）.
（2）Isochronal formation cor-relation screen work shale reservoir Macro Heterogeneous Journal of Sex Research
Confirmed by studying, eustasy, paleoproductivity, material resource delivery rate, ancient landform are shale reservoir rock phase, stratum
The governing factor of the vertically and horizontally anisotropism of thickness and electrical property feature, from for rock phase and electrical property feature, marine invasion phase and a high position
Domain early stage is the main period of high-quality shale reservoir development, thickness distribution stabilization in plane, by eustasy, material resource supply speed
Rate and ancient landform influence, and the formation thickness in bit field period high occurs in that thinning in south（Fig. 2）.
（3）Isochronal formation cor-relation screen work shale microheterogeneity is studied
The TOC and clay mineral content of shale reservoir control the physical property of shale reservoir vertically and horizontally anisotropism, and TOC controls page
The vertically and horizontally anisotropism of rock reservoir gas-bearing property, high-quality gas bearing shale major developmental in marine invasion phase and bit field high in early days（Fig. 3）.
（4）Division and correlation of substrata
In high frequency sequence chronostratigraphic architecture, according to shale reservoir heterogeneity feature, five peaks-Longma small stream group is contained on longitudinal direction
Gas shale section is divided into three sub- sections and 9 substratums, in plane 1.~5. substratum lithology, thickness, change and Reservior Conditions plane
Distribution stabilization, 6.~9. substratum lithology, thickness, change, preserve and gas-bearing property feature has certain change in the plane, it is overall to
South is deteriorated.
Analyzed according to more than, establish 1.~5. substratum be that burnt five peaks of masonry dam block-Longma small stream group gas bearing shale section main force opens
Hair interval.Confirm that shale gas well production is high by current Development Practice, can reach the exploitation of continuously steady production formula.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (3)
1. a kind of shale anisotropism is divided and control methods, it is characterised in that including：
1）High frequency sequence is divided and contrast
According to areal geology situation, shale gas development zone by including petromineralogy, extinct plants and animal, authigenic mineral, electrically exist
Interior feature development high frequency sequence is divided and contrast work, stratum pair when being vertical heterogeneity division foundation of shale reservoir etc.
Compare screen work；
2）The research of macroscopic heterogeneity in isochronal formation cor-relation screen work
Using eustasy, paleoproductivity, material resource delivery rate, ancient landform as shale reservoir rock phase, formation thickness and electricity
Property feature vertically and horizontally anisotropism factor of influence, analyzed in isochronal formation cor-relation screen work and establish shale reservoir difference high frequency
The vertically and horizontally variation characteristic of the macroscopic heterogeneity of sequence section；
3）The research of microheterogeneity in isochronal formation cor-relation screen work
Needed with reference to Shale Gas Accumulation study mechanism and later development research, by shale reservoir in chronostratigraphic architecture
TOC and clay mineral content carry out shale microheterogeneity properties study, establish different high frequency sequence section shale reservoirs
Microheterogeneity vertically and horizontally variation characteristic, wherein, the TOC and clay mineral content of shale reservoir are indulged for the physical property of shale reservoir
The factor of influence of Lateral heterogeneity, TOC is the factor of influence of the vertically and horizontally anisotropism of shale reservoir gas-bearing property；
4）Division and correlation of substrata
It is special according to shale reservoir heterogeneity in both macro and micro anisotropism achievement in research in isochronal formation cor-relation screen work
Levy, carry out substratum and finely divide, lithology, thickness, change, preserve and gas-bearing property feature stability, choose vertically and horizontally homogenieity
Shale reservoir high selects layer as the exploitation of continuously steady production formula, and for the exploitation of the shale gas in later stage longitudinally select layer, plane subregion and
Developing value provides geologic basis.
2. shale anisotropism according to claim 1 is divided and control methods, it is characterised in that the step 2）In it is grand
See the vertically and horizontally variation characteristic including shale of anisotropism lithologic character and lithofacies, change and Reservoir Characters.
3. shale anisotropism according to claim 1 is divided and control methods, it is characterised in that the step 3）Middle page
Rock microheterogeneity feature includes shale pore structure of reservoir, physical property characteristic and gas-bearing property feature.
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Cited By (12)
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| CN107942032A (en) * | 2017-10-25 | 2018-04-20 | 中国石油天然气股份有限公司 | Fine particle deposition outcrop research method |
| CN108956953A (en) * | 2018-08-01 | 2018-12-07 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | Mud shale series of strata lithofacies division methods and verification method between a kind of salt |
| CN108952676A (en) * | 2018-07-10 | 2018-12-07 | 中国石油天然气股份有限公司 | Shale gas reservoir heterogeneity evaluation method and device |
| CN109444189A (en) * | 2018-11-01 | 2019-03-08 | 科吉思石油技术咨询(北京)有限公司 | Carry out bad ground comparison and quantitative evaluation method using digital rock analytical technology |
| CN110274859A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | Carbonate reservoir control methods |
| CN110320221A (en) * | 2019-07-24 | 2019-10-11 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of steel shell and inhomogeneous structure body interface, which come to nothing, quantitatively determines method |
| CN110714745A (en) * | 2019-10-17 | 2020-01-21 | 中国石油集团长城钻探工程有限公司 | Shale gas horizontal well fracturing staged optimization method |
| CN110821496A (en) * | 2019-10-17 | 2020-02-21 | 中国石油集团长城钻探工程有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN111379552A (en) * | 2020-03-04 | 2020-07-07 | 中国石油化工股份有限公司 | Sea-phase shale gas horizontal well target window selection method based on high-frequency sequence stratigraphy |
| CN111948374A (en) * | 2020-08-14 | 2020-11-17 | 中国地质大学（武汉） | Geochemical identification method and system for organic-rich shale layer section in shale |
| CN112305617A (en) * | 2020-11-02 | 2021-02-02 | 中国矿业大学(北京) | Geophysical recognition method and device for unconventional gas reservoir of coal-containing rock series |
| US11802989B2 (en) | 2020-05-11 | 2023-10-31 | Saudi Arabian Oil Company | Systems and methods for generating vertical and lateral heterogeneity indices of reservoirs |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942032A (en) * | 2017-10-25 | 2018-04-20 | 中国石油天然气股份有限公司 | Fine particle deposition outcrop research method |
| CN110274859A (en) * | 2018-03-14 | 2019-09-24 | 中国石油化工股份有限公司 | Carbonate reservoir control methods |
| CN108952676A (en) * | 2018-07-10 | 2018-12-07 | 中国石油天然气股份有限公司 | Shale gas reservoir heterogeneity evaluation method and device |
| CN108956953A (en) * | 2018-08-01 | 2018-12-07 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | Mud shale series of strata lithofacies division methods and verification method between a kind of salt |
| CN109444189B (en) * | 2018-11-01 | 2021-05-11 | 科吉思石油技术咨询(北京)有限公司 | Method for carrying out complex stratum comparison and quantitative evaluation by utilizing digital rock analysis technology |
| CN109444189A (en) * | 2018-11-01 | 2019-03-08 | 科吉思石油技术咨询(北京)有限公司 | Carry out bad ground comparison and quantitative evaluation method using digital rock analytical technology |
| CN110320221A (en) * | 2019-07-24 | 2019-10-11 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of steel shell and inhomogeneous structure body interface, which come to nothing, quantitatively determines method |
| CN110714745A (en) * | 2019-10-17 | 2020-01-21 | 中国石油集团长城钻探工程有限公司 | Shale gas horizontal well fracturing staged optimization method |
| CN110821496A (en) * | 2019-10-17 | 2020-02-21 | 中国石油集团长城钻探工程有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN110821496B (en) * | 2019-10-17 | 2021-06-29 | 中国石油天然气集团有限公司 | Organic shale phase mode establishing method and organic shale evaluation method |
| CN111379552A (en) * | 2020-03-04 | 2020-07-07 | 中国石油化工股份有限公司 | Sea-phase shale gas horizontal well target window selection method based on high-frequency sequence stratigraphy |
| US11802989B2 (en) | 2020-05-11 | 2023-10-31 | Saudi Arabian Oil Company | Systems and methods for generating vertical and lateral heterogeneity indices of reservoirs |
| CN111948374A (en) * | 2020-08-14 | 2020-11-17 | 中国地质大学（武汉） | Geochemical identification method and system for organic-rich shale layer section in shale |
| CN112305617A (en) * | 2020-11-02 | 2021-02-02 | 中国矿业大学(北京) | Geophysical recognition method and device for unconventional gas reservoir of coal-containing rock series |
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