CN110133722A - A kind of application velocity of sound qualitative recognition mud distribution type new method - Google Patents
A kind of application velocity of sound qualitative recognition mud distribution type new method Download PDFInfo
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- CN110133722A CN110133722A CN201910493729.XA CN201910493729A CN110133722A CN 110133722 A CN110133722 A CN 110133722A CN 201910493729 A CN201910493729 A CN 201910493729A CN 110133722 A CN110133722 A CN 110133722A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000004744 fabric Substances 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 description 9
- 208000035126 Facies Diseases 0.000 description 6
- 238000013480 data collection Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 210000004884 grey matter Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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
- G01V1/303—Analysis for determining velocity profiles or travel times
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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
- G01V2210/62—Physical property of subsurface
- G01V2210/622—Velocity, density or impedance
- G01V2210/6222—Velocity; travel time
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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
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Abstract
The present invention provides a kind of application velocity of sound qualitative recognition mud distribution type new methods, it is related to oil and gas prospect technical field, this method is distributed the upper limit as sandstone velocity of longitudinal wave including the use of the velocity of longitudinal wave that CCT model calculates contact argillaceous sandstone, draws the shale content and velocity of longitudinal wave cross plot of contact shale, structure and laminar shale；Dispersed shale sandstone velocity of longitudinal wave is calculated as sandstone velocity of longitudinal wave using HMHS model and is distributed lower limit, draws dispersed shale content and velocity of longitudinal wave cross plot；The distributed areas for marking dispersed shale sandstone, contact argillaceous sandstone, structure sandstone and the laminar shale sandstone velocity of sound obtain argillaceous sandstone velocity of sound distribution plate；The velocity of sound of practical argillaceous sandstone and shale content data are substituted into plate, determine mud distribution form.This method can in qualitative recognition argillaceous sandstone shale distribution pattern, it is representative it is strong, the period is short, can large-scale application in well logging, seismic evaluation etc..
Description
Technical field
The present invention relates to oil and gas prospect technical fields, and in particular to a kind of application velocity of sound qualitative recognition shale point
Cloth type new method.
Background technique
Need to consider the influence of mud distribution type and content to the sandstone velocity of sound in the evaluation of actual geophysics.It is logical
Often, can using drilling extracting core laboratory under the microscope, grain size analysis determine mud distribution type, but there are samples for this method
The technological deficiencies such as this representativeness is limited, experimental period is long, can not large-scale application in well logging, seismic evaluation.
Chinese patent CN109324171A discloses a kind of sedimentary facies qualitative recognition method based on lithology statistics, specific to wrap
Include: data collection, data processing, parameter calculate, establish sedimentary facies qualitative recognition plate and the parameter according to each computing unit
Calculated result, wherein data collection includes collecting work area prospect pit lithologic log data and known deposition phase data；Data processing
Continuous continual stratomere corresponding to a kind of type of sedimentary facies divided using on individual well is rejected as a computing unit
Thickness is less than the computing unit of 20m, rejects the invalid rock stratum in each computing unit, remaining rock stratum is divided into sandstone, mud stone two
Major class；Parameter calculates than two parameters of sandstone frequency and sandy ground for calculating separately each computing unit；According to parameter calculated result
It then crosses in sandstone frequency-sandy ground ratio and carries out cultellation on figure, the type of sedimentary facies and cultellation position further according to computing unit are drawn
Make the identification region of different type of sedimentary facies.The working efficiency of sedimentary facies recognition work and accurate is greatly improved in the invention
Rate；Have the advantages that speed is fast, at low cost, high-efficient, Subjective Intervention influence it is small.But this method is mainly for continuity stratum
Section, and need to reject invalid rock stratum, while there is still a need for subjective judgement is carried out to rock stratum type in advance, application range has office
It is sex-limited.
Chinese patent CN106842359B discloses a kind of side using wave impedance qualitative recognition complexity sand-conglomerate body lithology
Method, comprising: determine different lithology in array induction, density, interval transit time, middle sub-aperture in conjunction with log data using rock core information
Distribution on these borehole log datas of porosity；Carry out the rough segmentation of lithology；Lithology subdivision is carried out, and utilizes wave impedance, into
One step determines calcareous sandstone, grey matter conglomerate；By above step, seven class lithology are finely determined.This method has preferable
Operability is conducive to promote, and the qualitative recognition for complicated sand-conglomerate body lithology provides practicable new method.But this method needs
Want the data such as detailed rock core information, including array induction, density, interval transit time and neutron porosity, need for rock stratum into
The parameter of row various aspects measures, complex.
So far, mud distribution kind identification method there are it is complex, multiple parameters need to be relied on and subjectivity is sentenced
The problems such as disconnected, it is therefore desirable to find it is a kind of it is representative it is strong, the period is short, subjectivity rely on it is small, can large-scale application in well logging,
Shake the recognition methods of evaluation, the distribution pattern to shale in qualitative recognition argillaceous sandstone.
Summary of the invention
In view of the problems of the existing technology the present invention, it is new to provide a kind of application velocity of sound qualitative recognition mud distribution type
Method.This method is representative strong, the period is short, can large-scale application in well logging, the recognition methods of seismic evaluation, to qualitative knowledge
The distribution pattern of shale in other argillaceous sandstone.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of application velocity of sound qualitative recognition mud distribution type new method, comprising the following steps:
(1), it is distributed the upper limit as rock velocity of longitudinal wave using the velocity of longitudinal wave that model calculates contact argillaceous sandstone, draws contact
Shale, the shale content of structure and laminar shale and velocity of longitudinal wave cross plot；
(2), dispersed shale sandstone velocity of longitudinal wave is calculated as sandstone velocity of longitudinal wave using model and be distributed lower limit, draw dispersion
Shale content and velocity of longitudinal wave cross plot；
(3), dispersed shale sandstone, contact argillaceous sandstone, structure sandstone and the laminar shale sandstone velocity of sound are marked respectively
Distributed areas, obtain the argillaceous sandstone velocity of sound distribution plate；
(4), the velocity of sound of practical argillaceous sandstone and shale content data are substituted into plate, and according to the practical argillaceous sandstone velocity of sound
Data and boundary relative position determine mud distribution form.
Further, model described in step (1) is CCT model, wherein the application method of CCT model is referring to paper
Xue-Hui H,Jun-Xin G,Feng-Bi L,et al.Generalization of the Expression of
Cementation Radius in Contact Cement Theory and Its Application[J].Chinese
Journal of Geophysics,2015,57(4):439-449.
Further, model described in step (2) is HMHS model, wherein the application method of HMHS model is referring to paper
Dvorkin J P,Nur A M.Elasticity of high-porous sandstones:Theory for two North
Sea data sets[J].Geophysics,1996,61(5):1363-1370.
Further, the velocity of longitudinal wave of dispersed shale described in step (2) is between Vlow-aVlowBetween；Institute in step (1)
The velocity of longitudinal wave of contact shale is stated between cVup-VupBetween；The velocity of longitudinal wave of structure and laminar shale described in step (1)
Between dVup-eVupBetween.Wherein, the VupThe upper limit, V are distributed for sandstone velocity of longitudinal wavelowFor under the distribution of sandstone velocity of longitudinal wave
Limit.The shale content of the contact shale is less than b；The shale content of the structure and laminar shale is greater than b, wherein b is
The interpolation of one shale content is distributed upper limit V in the velocity of soundupOn, it is contact shale that b, which has previously been thought that, and b is considered structure or layer later
Shape shale.
Further, described a, b, c, d and e are undetermined coefficient, by empirically determined, in some specific embodiments
In, the range of a is 1-1.6, and the range of the b is 0-0.15, and the range of the c is 0.8-1, and the range of the d is
The range of 0.8-1, the e are 1-1.3.Preferably, a is 1.5, and the b is 0.1, and the c is 0.9, and the d is 0.9,
The e is 1.1.
It is worth noting that the present invention is mixing shale, real velocity of sound distribution by white space surrounded in plate
Illustrate mud distribution based on dispersed shale closer to lower limit；Real velocity of sound illustrates mud distribution with structure closer to the upper limit
Or based on laminar shale；Real velocity of sound illustrates mud distribution closer to contact shale region to contact based on shale.
It is obtained by the present invention to have the technical effect that
1. method of the invention can in qualitative recognition argillaceous sandstone shale distribution pattern, be suitable for mud distribution type
More single situation.
2. method of the invention it is representative it is strong, the period is short, subjectivity rely on it is small, can large-scale application in well logging, earthquake
Evaluation provides reference for earth-layer fine explanation, reduces and explain risk.
Detailed description of the invention
Fig. 1 is that the argillaceous sandstone velocity of sound is distributed plate；
Fig. 2 is the distribution of the argillaceous sandstone velocity of sound and argillaceous sandstone acoustic speed plate, wherein scatterplot is Han Dehua (Han, De-
Hua the argillaceous sandstone acoustic speed data) published.
Specific embodiment
A kind of application velocity of sound qualitative recognition mud distribution type new method, comprising the following steps:
(1), the upper limit is distributed as sandstone velocity of longitudinal wave according to the velocity of longitudinal wave that CCT model calculates contact argillaceous sandstone, drawn
The shale content and velocity of longitudinal wave cross plot of system contact shale, structure and laminar shale；
(2), the dispersed shale sandstone velocity of sound is calculated as sandstone velocity of longitudinal wave according to HMHS model and is distributed lower limit, draw dispersion
Shale content and velocity of longitudinal wave cross plot；
(3), point of dispersed shale sandstone, contact argillaceous sandstone, structure sandstone and the laminar shale sandstone velocity of sound is marked
Cloth region obtains argillaceous sandstone velocity of sound distribution plate；Wherein, the velocity of longitudinal wave of dispersed shale is between Vlow-aVlowBetween, contact
The velocity of longitudinal wave of shale is between cVup-VupBetween, shale content is less than b；The velocity of longitudinal wave of structure or laminar shale between
dVup-eVupBetween, shale content is greater than b.Wherein, a, b, c, d and e are undetermined coefficient, and a 1.5, b 0.1, c 0.9, d are
0.9, e 1.1；VlowRepresent sandstone velocity of longitudinal wave distribution lower limit, VupRepresent the sandstone velocity of longitudinal wave distribution upper limit.According to as above ginseng
The argillaceous sandstone velocity of sound distribution plate that number is established is as shown in Figure 1；Wherein, the setting of parameters are as follows: quartz body product module amount K=
37GPa；Quartzy shear modulus G=44GPa；Quartzy density p=2.65g/cm3；Shale bulk modulus Kc=25GPa；Shale shearing
Modulus Gc=9GPa；Shale density pc=2.55g/cm3；Critical porosityLigancy n=9；Shale contentWherein,For the practical porosity of sandstone.
(4), by paper Han D, Nur A, Morgan D.Effects of porosity and clay content
On wave velocities in sandstones [J] .Geophysics, 1986,51 (11): practical shale sand in 2093.
The velocity of sound and shale content data of rock substitute into plate (i.e. Fig. 1), obtain Fig. 2, and according to practical argillaceous sandstone sound velocity data and
Boundary relative position determines mud distribution form.
As shown in Figure 2, in the present invention, the region that the velocity of sound and shale content data of practical argillaceous sandstone are fallen into largely is
Structure or laminar shale, for mud distribution based on structure or stratiform, mud distribution type is more single in argillaceous sandstone sample
One, the empirical equation that the relationship and Han Dehua for showing approximately linear sum up the argillaceous sandstone velocity of sound of approximately linear is mutual
Verifying, the above results show that the conclusion that method of the invention obtains and the Han Dehua empirical equation put forward and experimental data are mutual
It verifies and supplements, the method in the present invention is more accurate.
Finally it should be noted that the above content is merely illustrative of the technical solution of the present invention, rather than the present invention is protected
The limitation of range, the simple modification or equivalent replacement that those skilled in the art carry out technical solution of the present invention,
All without departing from the spirit and scope of technical solution of the present invention.
Claims (10)
1. a kind of application velocity of sound qualitative recognition mud distribution type new method, it is characterised in that: the following steps are included:
(1), it is distributed the upper limit as sandstone velocity of longitudinal wave using the velocity of longitudinal wave that model calculates contact argillaceous sandstone, draws contact mud
Matter, the shale content of structure and laminar shale and velocity of longitudinal wave cross plot；
(2), dispersed shale sandstone velocity of longitudinal wave is calculated as sandstone velocity of longitudinal wave using model and be distributed lower limit, draw dispersed shale
Content and velocity of longitudinal wave cross plot；
(3), point of dispersed shale sandstone, contact argillaceous sandstone, structure sandstone and the laminar shale sandstone velocity of sound is marked respectively
Cloth region obtains argillaceous sandstone velocity of sound distribution plate；
(4), the velocity of sound of practical argillaceous sandstone and shale content data are substituted into plate, and according to practical argillaceous sandstone sound velocity data
Mud distribution form is determined with boundary relative position.
2. according to the method described in claim 1, it is characterized by: model described in step (1) is CCT model.
3. according to the method described in claim 1, it is characterized by: model described in step (2) is HMHS model.
4. according to the method described in claim 1, it is characterized by: the velocity of longitudinal wave of dispersed shale described in step (2) between
Vlow-aVlowBetween, the VlowLower limit is distributed for sandstone velocity of longitudinal wave.
5. according to the method described in claim 1, it is characterized by: described in step (1) contact shale velocity of longitudinal wave between
cVup-VupBetween, the VupThe upper limit is distributed for sandstone velocity of longitudinal wave.
6. according to the method described in claim 1, it is characterized by: the velocity of longitudinal wave of structure described in step (1) between
dVup-eVupBetween, the VupThe upper limit is distributed for sandstone velocity of longitudinal wave.
7. according to the method described in claim 1, it is characterized by: the velocity of longitudinal wave of laminar shale described in step (1) between
dVup-eVupBetween, the VupThe upper limit is distributed for sandstone velocity of longitudinal wave.
8. according to the method described in claim 1, it is characterized by: the shale content for contacting shale described in step (1) is less than
b。
9. according to the method described in claim 1, it is characterized by: the mud of structure and laminar shale described in step (1)
Matter content is greater than b.
10. according to method described in claim 4-9 any one, it is characterised in that: described a, b, c, d and e are undetermined coefficient,
The range of a is 1-1.6, and the range of the b is 0-0.15, and the range of the c is 0.8-1, and the range of the d is 0.8-1,
The range of the e is 1-1.3.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112987096A (en) * | 2021-03-15 | 2021-06-18 | 中国石油大学(华东) | Method for calculating sound velocity of high-argillaceous sandstone |
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