CN107102354A - A kind of shale dessert seismic Integrated Evaluation method - Google Patents
A kind of shale dessert seismic Integrated Evaluation method Download PDFInfo
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- CN107102354A CN107102354A CN201611193684.7A CN201611193684A CN107102354A CN 107102354 A CN107102354 A CN 107102354A CN 201611193684 A CN201611193684 A CN 201611193684A CN 107102354 A CN107102354 A CN 107102354A
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- 238000011156 evaluation Methods 0.000 title claims abstract description 31
- 235000021185 dessert Nutrition 0.000 title claims abstract description 30
- 238000011161 development Methods 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004321 preservation Methods 0.000 claims abstract description 13
- 238000013508 migration Methods 0.000 claims abstract description 9
- 230000005012 migration Effects 0.000 claims abstract description 9
- 239000004215 Carbon black (E152) Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 208000010392 Bone Fractures Diseases 0.000 claims description 6
- 206010017076 Fracture Diseases 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/306—Analysis for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/61—Analysis by combining or comparing a seismic data set with other data
- G01V2210/612—Previously recorded data, e.g. time-lapse or 4D
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/62—Physical property of subsurface
- G01V2210/624—Reservoir parameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/62—Physical property of subsurface
- G01V2210/624—Reservoir parameters
- G01V2210/6244—Porosity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/60—Analysis
- G01V2210/62—Physical property of subsurface
- G01V2210/624—Reservoir parameters
- G01V2210/6248—Pore pressure
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of shale " dessert " seismic Integrated Evaluation method, this method comprises the following steps：1) required according to the geologic assessment of shale gas field development, utilize the development condition such as gas-bearing property, compressibility, porosity, strata pressure and the crack of three dimensional depth migration before stack seismic data and prestack road set information prediction shale gas-bearing formation, crustal stress, structural map, buried depth figure and the preservation condition for analyzing shale gas-bearing formation are made, work area shale gas quality major parameter prognostic chart is obtained；2) it is based on developing shale gas-bearing formation the analysis of " geology dessert " and " engineering dessert ", the preferably main geophysical parameterses related to exploitation, and determine one-parameter threshold value；3) contribution according to each parameter in shale gas exploitation assigns different weights, sets up shale " dessert " seismic Integrated Evaluation parameter list；4) one-parameter is weighted, obtains shale gas comprehensive evaluation value P, synthetical assortment evaluation is carried out to shale gas block according to P values.Evaluation result of the present invention can be used for carrying out classification of assessment to shale gas-bearing formation, instruct the exploitation of shale gas-bearing formation.
Description
Technical field
The present invention relates to geophysical techniques, more particularly to a kind of shale " dessert " seismic Integrated Evaluation method.
Background technology
Shale gas refers to the general designation of the biochemical genesis air and heat origin cause of formation gas continuously generated.Mainly with the shape that adsorbs or dissociate
State preservation is in dark-coloured rich organic matter mud shale, with being born from the characteristics of storage, large area are continuously enriched with certainly.It is real by the exploitations of 3 years
Trample, progressively recognize the regional shale gas " dessert " of burnt masonry dam refer mainly to " have certain tectonic setting, buried depth is moderate, thickness is larger,
Physical property is good, and maturity is moderate, and organic carbon content is high, and preferably, gas-bearing property is good for preservation condition, and brittle mineral content is high, microcrack phase
To the rammell of development.
China PetroChemical Corporation's issue in 2013《Shale exploration activity selection and appraisal of exploration area method》Trial version, preferably shale
Oily hydrocarbon genesis conditions, occurrence condition, it can adopt assignment evaluation is carried out in terms of condition, resource extent, both not be suitable for shale gas exploitation,
It is not suitable for " dessert " seismic Integrated Evaluation yet.Need preferably related to geophysics major parameter and research evaluation side
Method, is evaluated shale gas-bearing formation with geophysical techniques and means, is instructed well site deployment and well Trajectory Design, is met shale gas
The requirement of field Efficient Development.Therefore it is necessary to set up shale gas exploitation " dessert " seismic Integrated Evaluation technology.
The content of the invention
The technical problem to be solved in the present invention is that there is provided a kind of shale " dessert " earthquake for defect of the prior art
Integrated evaluating method, for carrying out classification of assessment to shale gas-bearing formation, instructs the exploitation of shale gas-bearing formation.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of shale " dessert " seismic Integrated Evaluation method, comprises the following steps：
1) in known oil gas field work area, constructed using three dimensional depth migration before stack seismic data and prestack trace gather data make
Figure, buried depth figure, seismic data quality figure；And it is anti-using above three dimensional seismic data and prestack road set information progress poststack and prestack
Drill, FRACTURE PREDICTION, crustal stress are predicted, prediction of formation pressure, obtain the shale gas quality main relevant parameters prediction of oil gas field work area
Figure, the main relevant parameters prognostic chart includes shale TOC prognostic charts, porosity prediction figure, brittle mineral content prediction figure, thickness
Spend prognostic chart, air content prognostic chart, fracture development figure, stress prediction figure, pressure prediction figure；
2) be based on to the concept of shale " dessert ", with reference to step 1) in earthquake prediction result, preferably shale geophysics phase
Related parameter, screening criteria is to choose predict shale gas, generate, preserving, preserving and the engineered parameter having a major impact, main
To include following parameter：
Seismic data parameter：Pre-stack time migration seismic data quality, the parameter has an impact to predicting the outcome；
Hydrocarbon source conditional parameter：Including shale thickness and total content of organic carbon, the parameter influences the growing amount of shale gas；
Reservior Conditions parameter：Porosity for representing shale gas-bearing formation physical property, the parameter influences preserving for shale gas；
Preservation condition parameter：Including tectonic setting, attitude of stratum and fault development degree, air content, parameter influence page
The preservation of rock gas；
Engineered conditional parameter：Including buried depth, pore pressure coefficient, microcrack development degree, crustal stress and shale
The fragility of layer, the parameter influences the engineered process of shale gas；
3) contribution according to each shale geophysics relevant parameter in shale gas exploitation assigns different weights to it, builds
Vertical shale " dessert " seismic Integrated Evaluation parameter list；
Set up shale " dessert " seismic Integrated Evaluation parameter list specific as follows：The seismic data quality made in step 1
For contribution of the different parameters for shale gas on the basis of block plan, different assignment intervals are given, with setting up shale " dessert "
Assessment parameter table is shaken,
4) shale gas synthesis is calculated using integrated evaluating method according to shale " dessert " seismic Integrated Evaluation parameter list to comment
P is worth, classification of assessment is carried out to shale gas-bearing formation according to P values, the exploitation of shale gas-bearing formation is instructed.
By such scheme, the step 2) in the weights of shale geophysics relevant parameter be allocated as follows：
The weights of Primary parameter are assigned as, and seismic data parameter is 0.1；Hydrocarbon source conditional parameter is 0.2；Reservior Conditions parameter
For 0.2；Preservation condition parameter is 0.3；Engineered conditional parameter is 0.4；
The weights of secondary parameters are assigned as, and pre-stack time migration seismic data quality is 1；Shale thickness is 0.4, total organic
Carbon content is 0.6；Porosity is 1；Tectonic setting is that 0.2, attitude of stratum is that 0.2, fault development degree is that 0.3, air content is
0.3；Buried depth is that 0.2, pore pressure coefficient is that 0.1, microcrack development degree is the fragility that 0.2, crustal stress is 0.3, rammell
For 0.2.
The beneficial effect comprise that：The present invention provides a kind of effective and feasible earthquake for shale " dessert " and integrated
Evaluation method, from seismic data quality, hydrocarbon source condition, Reservior Conditions, engineered condition various aspects are provided can be with quantification
Call by value parameter carry out overall merit.According to evaluation result on the one hand shale gas field can be classified, preferred development unit and
Carry out well site deployment；On the other hand well Trajectory Design can be instructed, reaches the purpose in Efficient Development shale gas field.
Single factor test proposed by the present invention is more comprehensive, and integrated evaluating method rationally, comment by shale " dessert " synthesis finally drawn
Valency result and the identical rate of actual shale gas exploitation capacity data are higher, effectively direct the exploration and development of Fuling shale gas.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is block single factor evaluation parameter assignment table of the embodiment of the present invention；
Fig. 2 is block assessment parameter table of the embodiment of the present invention；
Fig. 3 is final effect figure of the embodiment of the present invention.
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 not used to limit only to explain the present invention
The fixed present invention.
A kind of shale " dessert " seismic Integrated Evaluation method, comprises the following steps：
1) in known oil gas field work area, constructed using three dimensional depth migration before stack seismic data and prestack trace gather data make
Figure, buried depth figure, seismic data quality figure；And it is anti-using above three dimensional seismic data and prestack road set information progress poststack and prestack
Drill, FRACTURE PREDICTION, crustal stress are predicted, prediction of formation pressure, obtain the shale gas quality main relevant parameters prediction of oil gas field work area
Figure, the main relevant parameters prognostic chart includes shale TOC prognostic charts, porosity prediction figure, brittle mineral content prediction figure, thickness
Spend prognostic chart, air content prognostic chart, fracture development figure, stress prediction figure, pressure prediction figure；
2) concept to shale " dessert " is based on, with reference to earthquake prediction result in step 1, preferably shale geophysics is related
Parameter, screening criteria is to choose predict shale gas, generate, preserving, preserving and the engineered parameter having a major impact, mainly
Including following parameter：
Seismic data parameter：Pre-stack time migration seismic data quality, has an impact to predicting the outcome；
Hydrocarbon source conditional parameter：Including shale thickness and total content of organic carbon, the growing amount of shale gas is influenceed；
Reservior Conditions parameter：Porosity for representing shale gas-bearing formation physical property, influences preserving for shale gas；
Preservation condition parameter：Including tectonic setting, attitude of stratum and fault development degree, air content, influence shale gas
Preserve
Engineered conditional parameter：Including buried depth, pore pressure coefficient, microcrack development degree, crustal stress and shale
The fragility of layer, influences the engineered process of shale gas；
3) contribution according to each parameter in shale gas exploitation assigns different weights, sets up shale " dessert " earthquake
Assessment parameter table, and integrated evaluating method is set up by research.Specific evaluation method is the earthquake money made in step 1
For contribution of the different parameters for shale gas on the basis of item matter figure, different assignment intervals are given, 1 is specifically shown in Table；By not
Single factor test in same evaluating type carries out scoring assignment, according to different weights, cumulative to obtain a certain type parameter
Score value, then after the scoring of different type parameter is multiplied with weight coefficient, is added up and finally scored.
The shale gas evaluating assignment table of table 1
4) shale gas comprehensive evaluation value P is calculated using integrated evaluating method, shale gas block is integrated according to P values
Evaluation of classification.
Shale gas dessert prediction overall merit be according to seismic data quality, hydrocarbon source condition, Reservior Conditions, preservation condition,
Engineered condition is calculated, and specific formula for calculation is as follows：
P=PData quality+PHydrocarbon source condition+PReservior Conditions+PPreservation condition+PEngineered condition (1)
PHydrocarbon source condition=0.2 (0.4 × PShale thickness+0.6×PTotal content of organic carbon) (2)
PReservior Conditions=0.2 × PPorosity (3)
PPreservation condition=0.3 (0.2 × PTectonic setting+0.2×PStratigraphic dip+0.3×PIt is broken wealth+0.3×PAir content) (4)
PEngineered condition=0.2 (0.2 × PBuried depth+0.1×PPore pressure coefficient+0.2×PMicrocrack wealth+0.3×PCrustal stress coefficient of variation+0.2×PBuried depth) (5)
In formula：
P is shale gas comprehensive evaluation value, PAir content、PShale thickness、POrganic carbon content、PPorosity、PTectonic setting、PFault development degree、PBuried depth、PPore pressure coefficient、
PCrustal stress、PMicrocrack development degreeAnd PFragilityEtc. assignment can be carried out according to shale gas key parameter data and its score value and weights, and participate in meter
Calculate.
According in table 1, the single factor test pressed to shale oil gas block in different evaluating types carries out scoring assignment, root
It is cumulative to obtain the score value of a certain type parameter according to different weights, then after the scoring of different type parameter is multiplied with weight coefficient,
Utilizing step 4) calculation formula calculates P values and sees Fig. 1.
Comprehensive value model is shown in Fig. 2, and shale HYDROCARBON-BEARING REGION shale " dessert " earthquake is finally produced according to comprehensive value model
Map of Complex evaluation, is shown in Fig. 3.
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 (2)
1. a kind of shale " dessert " seismic Integrated Evaluation method, it is characterised in that comprise the following steps：
1) in known oil gas field work area, using three dimensional depth migration before stack seismic data and prestack trace gather data make structural map,
Buried depth figure, seismic data quality figure；And using above three dimensional seismic data and prestack road set information carry out poststack and prestack inversion,
FRACTURE PREDICTION, crustal stress prediction, prediction of formation pressure, obtain oil gas field work area shale gas quality main relevant parameters prognostic chart,
The main relevant parameters prognostic chart includes shale TOC prognostic charts, porosity prediction figure, brittle mineral content prediction figure, thickness
Prognostic chart, air content prognostic chart, fracture development figure, stress prediction figure, pressure prediction figure；
2) be based on to the concept of shale " dessert ", with reference to step 1) in earthquake prediction result, preferably shale geophysics correlation ginseng
Number, screening criteria is to choose predict shale gas, generate, preserving, preserving and the engineered parameter having a major impact, main bag
Include following parameter：
Seismic data parameter：Pre-stack time migration seismic data quality, the parameter has an impact to predicting the outcome；
Hydrocarbon source conditional parameter：Including shale thickness and total content of organic carbon, the parameter influences the growing amount of shale gas；
Reservior Conditions parameter：Porosity for representing shale gas-bearing formation physical property, the parameter influences preserving for shale gas；
Preservation condition parameter：Including tectonic setting, attitude of stratum and fault development degree, air content, parameter influence shale gas
Preservation；
Engineered conditional parameter：Including buried depth, pore pressure coefficient, microcrack development degree, crustal stress and rammell
Fragility, the parameter influences the engineered process of shale gas；
3) contribution according to each shale geophysics relevant parameter in shale gas exploitation assigns different weights to it, sets up page
Rock " dessert " seismic Integrated Evaluation parameter list；
Set up shale " dessert " seismic Integrated Evaluation parameter list specific as follows：In step 1) the middle seismic data quality subregion made
For contribution of the different parameters for shale gas on the basis of figure, different assignment intervals are given, shale " dessert " earthquake are set up comprehensive
Close evaluating table；
4) shale gas comprehensive evaluation value is calculated using integrated evaluating method according to shale " dessert " seismic Integrated Evaluation parameter list
P, carries out classification of assessment to shale gas-bearing formation according to P values, instructs the exploitation of shale gas-bearing formation.
2. seismic Integrated Evaluation method according to claim 1, it is characterised in that the step 2) in shale geophysics
The weights of relevant parameter are allocated as follows：
The weights of Primary parameter are assigned as, and seismic data parameter is 0.1；Hydrocarbon source conditional parameter is 0.2；Reservior Conditions parameter is
0.2；Preservation condition parameter is 0.3；Engineered conditional parameter is 0.4；
The weights of secondary parameters are assigned as, and pre-stack time migration seismic data quality is 1；Shale thickness is that 0.4, total organic carbon contains
Measure as 0.6；Porosity is 1；Tectonic setting is that 0.2, attitude of stratum is that 0.2, fault development degree is that 0.3, air content is 0.3；
Buried depth is that 0.2, pore pressure coefficient is that 0.1, microcrack development degree is that the fragility that 0.2, crustal stress is 0.3, rammell is
0.2。
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| CN108363100A (en) * | 2018-01-16 | 2018-08-03 | 太原理工大学 | Based on the coal bed gas dessert area Seismology and Geology recognition methods for sealing unit and rough set up for safekeeping |
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| CN109162694A (en) * | 2018-07-26 | 2019-01-08 | 中国石油天然气股份有限公司 | Method and device for selecting compact oil well position |
| CN109188525A (en) * | 2018-07-31 | 2019-01-11 | 中国地质大学（武汉） | A kind of acquisition methods and system of marine facies rammell buried depth data |
| CN109298448A (en) * | 2018-09-06 | 2019-02-01 | 中国海洋石油集团有限公司 | A kind of prediction technique and device of tight gas fracturing engineering dessert |
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| CN109492938A (en) * | 2018-12-04 | 2019-03-19 | 同济大学 | A kind of deep carbonate reservoirs method for evaluating quality based on dessert indicator |
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