CN107765331A - Three-dimensional cracking modeling method - Google Patents
Three-dimensional cracking modeling method Download PDFInfo
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- CN107765331A CN107765331A CN201610684435.1A CN201610684435A CN107765331A CN 107765331 A CN107765331 A CN 107765331A CN 201610684435 A CN201610684435 A CN 201610684435A CN 107765331 A CN107765331 A CN 107765331A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005336 cracking Methods 0.000 title claims abstract description 21
- 238000011161 development Methods 0.000 claims abstract description 52
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 30
- 206010017076 Fracture Diseases 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims abstract description 21
- 238000002474 experimental method Methods 0.000 claims abstract description 12
- 238000003384 imaging method Methods 0.000 claims abstract description 11
- 230000000717 retained effect Effects 0.000 claims abstract description 7
- 238000011160 research Methods 0.000 claims description 7
- 230000005251 gamma ray Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V20/00—Geomodelling in general
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses three-dimensional cracking modeling method, by carrying out conventional logging, imaging logging successively, exclude agensis crack well section, retain fracture development well section, VSP well loggings, sidewall coring are carried out to the well section retained again, electron-microscope scanning observation, porosity determination, rock strain experiment are carried out to institute coring, in conjunction with well log interpretation, the fracture development model of individual well section is established using modeling software；Again stratum three-dimensional cracking development model is set up by more mouthfuls of individual well models in same block.It is an object of the invention to provide three-dimensional cracking modeling method, and completely, accurately whole Reservoirs are modeled with the purpose of analysis in exploitation early stage to realize.
Description
Technical field
The present invention relates to geological exploration and development field, relates in particular to three-dimensional cracking modeling method.
Background technology
The method and its application of Reservoirs evaluation, always are exploration of oil and gas field and the important step in development process
One of.From the point of view of oil-gas field development angle, the research of Reservoirs feature is to improve the rate of oil and gas recovery, improve development effectiveness
Important means, especially for the matrix reservoirs of some low porosity and low permeabilities, the presence of intrinsic fracture is likely to no extraction value
Oil reservoir displacement develop oil reservoir with economic benefit.In addition, with the increasingly reduction of conventional Porous Reservoir reserves, often
Rule hole reservoir exploitation difficulty gradually increases, and the exploration trend of oil and gas gradually turns to deep by shallow stratum, by normal
Rule oil-gas reservoir turns on special oil and gas pools, be such as difficult to prediction but may the fractured reservoirs of very high yield be wherein critically important
A kind of research direction.In a word, during the exploration and development to fossil energy, the research to Reservoir Fracture is in very heavy
Want status.However, Reservoir Fracture evaluation of the prior art is to rely on conventional geology means, in the storage acquired by the prospect pit stage
Layer fracture evaluation data is difficult to complete, abundant, while can not possibly be cored on a large scale again in the production development stage or ground
Matter research work, block exploitation is often resulted in when entering the middle and later periods, just the fracture development to the reservoir and distribution situation have complete
Whole, comprehensive understanding, influence Development allocation, influence oil gas field entirety recovery ratio.
The content of the invention
It is an object of the invention to provide three-dimensional cracking modeling method, to solve in the prior art acquired by the prospect pit stage
Reservoir Fracture evaluation data be difficult to the problem of complete, abundant, realize exploitation early stage it is complete, accurately to entirely preserving
Slabbing stitches the purpose for being modeled analysis.
The present invention is achieved through the following technical solutions：
Three-dimensional cracking modeling method, this method comprise the following steps：（a）In a certain oil-gas exploration and development block, according to geology
Condition and goal in research demand, the well with symbolical meaningses is chosen, resistivity logging, acoustic logging, nature are carried out to full well section
Potential logging, gamma ray log, compensated neutron log, density log, calliper log, obtain the above-mentioned survey of the full well section of target well
Well curve, makes well log interpretation, and listing all slits can developable well section；（b）To step（a）In the crack judged may
Develop well section and carry out imaging logging, explain Image Logging Data, exclude agensis crack well section, retain fracture development well section；（c）
Focus is set in turn in step（b）Middle retained all slits development well section, carries out VSP well loggings, makes VSP well loggings one by one
Explain, draw the data of each well section development degree of micro cracks in oil；（d）To step（b）Middle retained all slits development well section is carried out
Sidewall coring operation, and electron-microscope scanning observation, porosity determination, rock strain experiment are carried out to all rock cores of taking-up；（e）According to
According to above-mentioned well logging and experimental data, the fracture development model of individual well section is established using modeling software；（f）By the step（a）~
（e）For the N mouth wells in same oil-gas exploration and development block, N number of individual well section model is established as Reservoir Lithofacies three-dimensional cracking
Development model, wherein, N is the positive integer more than or equal to 2.
For in the prior art acquired by the prospect pit stage Reservoir Fracture evaluation data be difficult to it is complete, sufficiently ask
Topic, the present invention propose three-dimensional cracking modeling method, and this method is implemented often first in prospect pit drilling process to the well location of selection
Rule well logging, well logging project include but is not limited to resistivity, sound wave, natural potential, natural gamma, compensated neutron, density, hole diameter,
The above-mentioned log of full well section is obtained, and utilizes conventional geology means, instruction fracture development is found from above-mentioned well log interpretation
Feature, such as：Deep lateral resistivity is significantly greater than shallow lateral resistivity, induction motor is significantly greater than lateral resistivity, nature
It is equal that gamma curve increases extremely, anomalous variation even zigzag change, spontaneous potential curve and hole diameter occurs in resistivity curve
It is abnormal etc., can developable well section so as to list all slits.Afterwards can developable well section progress to listed crack
Imaging logging.As identification crack effective logging mode most directly perceived, it is that have very much must individually to carry out an imaging logging operation
Want, because Image Logging Data can protrude the variation characteristic of rock acoustic impedance and resistivity because caused by changing crack,
Reducing the non-crack response as caused by the human factors such as drilling engineering influences, so as to correct the error of Conventional Logs so that
Those skilled in the art can further exclude agensis crack well section, retain fracture development well section.For the judgement that maintain
For the well section of fracture development, by each well section depth of focus tripping in, VSP well loggings are carried out.VSP logs well, i.e. vertical seismic profile log,
Fracture intensity is judged by the reflectance signature difference of seismic wave.On the basis of VSP well loggings can judge in above-mentioned crack,
The degree of fracture development is drawn by the strong and weak feature of back wave, researcher is had the development degree of formation fracture quantitative
Understanding.Meanwhile then the judgement to maintain carry out sidewall coring for the well section of fracture development, and all rock cores of taking-up are entered
The observation of row electron-microscope scanning, porosity determination, rock strain experiment, obtain rock core high-definition picture, porosity and connectivity data,
The significant datas such as stress-strain diagram.According to above-mentioned all data, the fracture development mould of individual well section is established using modeling software
Type, the individual well model of the N mouth prospect pits by being arranged in each important orientation of trap, then it can obtain the overall three-dimensional cracking hair of reservoir
Educate model.Wherein N values are determined by trap size, scale, form and make, at least should ensure that each critical boundaries of trap
Place and the Yue kou of each high point.Hereby it is achieved that completely, conveniently, accurately whole Reservoirs are entered in exploitation early stage
The purpose of row modeling analysis.In addition, in modeling method of the present invention, due to only to step（a）In the well section listed carry out
Imaging logging, only to step（b）In listed well section carry out VSP well loggings and sidewall coring, greatly reduce prospect pit construction
Cost and the duration, while can also reduce occur drilling engineering accident risk, for drilling engineering also have it is very heavy
The meaning wanted.
Further, step（b）Described in imaging logging be micro-resisitivity image（FMI or EMI）.
Further, step（c）And step（d）It is sequentially adjustable.
Further, step（d）Described in rock strain experiment for triaxial stress rock strain test.Compared to routine
The experiment of simple stress rock strain, feelings more accurate simulated ground stress can be acted on using the experiment of triaxial stress rock strain
Condition, experiment is closer to underground actual conditions, be easy to obtain more accurately experimental data.
The present invention compared with prior art, has the following advantages and advantages：
1st, three-dimensional cracking modeling method of the present invention, by carrying out conventional logging, imaging logging successively, agensis crack well is excluded
Section, retain fracture development well section, then the well section to being retained carries out VSP well loggings, sidewall coring, carrying out Electronic Speculum to institute's coring sweeps
Observation, porosity determination, rock strain experiment are retouched, in conjunction with well log interpretation, the crack of individual well section is established using modeling software
Development model；Again stratum three-dimensional cracking development model is set up by more mouthfuls of individual well models in same block.
2nd, three-dimensional cracking modeling method of the present invention, only the part well section by screening is carried out imaging logging, VSP well loggings with
Sidewall coring operation, greatly reduces cost and the duration of prospect pit construction, while can also reduce and drilling engineering accident occurs
Risk, have for drilling engineering and be of great significance.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the schematic process flow diagram of a specific embodiment of the invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1：
Three-dimensional cracking modeling method as shown in Figure 1, this method comprise the following steps：（a）In a certain oil-gas exploration and development block
It is interior, according to geological conditions and goal in research demand, the well with symbolical meaningses is chosen, resistivity logging, sound are carried out to full well section
Ripple well logging, nutural potential logging, gamma ray log, compensated neutron log, density log, calliper log, it is complete to obtain target well
The above-mentioned log of well section, makes well log interpretation, and listing all slits can developable well section；（b）To step（a）Middle judgement
The crack gone out may develop well section and carry out micro-resisitivity image, explain Image Logging Data, exclude agensis crack
Well section, retain fracture development well section；（c）Focus is set in turn in step（b）Middle retained all slits development well section, by
One carries out VSP well loggings, makes VSP well log interpretations, draws the data of each well section development degree of micro cracks in oil；（d）To step（b）It is middle to be protected
The all slits development well section stayed carries out sidewall coring operation, and carries out electron-microscope scanning observation, hole to all rock cores of taking-up
Degree measure, the experiment of triaxial stress rock strain；（e）According to above-mentioned well logging and experimental data, establish individual well using modeling software and cut open
The fracture development model in face；（f）By the step（a）~（e）, will be N number of for the N mouth wells in same oil-gas exploration and development block
Individual well section model is established as Reservoir Lithofacies three-dimensional cracking development model.Wherein N values are by trap size, scale, form and construction
Mode determines, to ensure having at each critical boundaries of trap and based on the Yue kou of each high point.
During the present embodiment use, conventional logging, well logging are implemented to the well location of selection first in prospect pit drilling process
Project includes but is not limited to resistivity, sound wave, natural potential, natural gamma, compensated neutron, density, hole diameter, obtains full well section
Above-mentioned log, and conventional geology means are utilized, the feature of instruction fracture development is found from above-mentioned well log interpretation.It is right afterwards
Listed crack can developable well section carry out imaging logging, so as to correct the error of Conventional Logs so that this area
Technical staff can further exclude agensis crack well section, retain fracture development well section.It is crack for the judgement that maintain
The well section of development, by each well section depth of focus tripping in, carry out VSP well loggings.The basis that VSP well loggings can judge in above-mentioned crack
On, the degree of fracture development is drawn by the strong and weak feature of back wave, researcher is had the development degree of formation fracture
Quantitative understanding.Meanwhile then the judgement to maintain carry out sidewall coring for the well section of fracture development, and to all rocks of taking-up
The heart carries out electron-microscope scanning observation, porosity determination, rock strain experiment, obtains rock core high-definition picture, porosity and connectivity
The significant datas such as data, stress-strain diagram.According to above-mentioned all data, the crack that individual well section is established using modeling software is sent out
Model is educated, the individual well model of the more mouthfuls of prospect pits by being arranged in each important orientation of trap, then can obtain the overall three-dimensional of reservoir
Fracture development model.
Upper described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention embodiment, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., it should be included in
Within protection scope of the present invention.
Claims (4)
1. three-dimensional cracking modeling method, it is characterised in that this method comprises the following steps：
（a）In a certain oil-gas exploration and development block, according to geological conditions and goal in research demand, choose with symbolical meaningses
Well, resistivity logging, acoustic logging, nutural potential logging, gamma ray log, compensated neutron log, close is carried out to full well section
Degree well logging, calliper log, obtain the above-mentioned log of the full well section of target well, make well log interpretation, and listing all slits may
The well section of development；
（b）To step（a）In the crack judged may develop well section and carry out imaging logging, explain Image Logging Data, exclude
Agensis crack well section, retain fracture development well section；
（c）Focus is set in turn in step（b）Middle retained all slits development well section, carries out VSP well loggings, makes one by one
VSP well log interpretations, draw the data of each well section development degree of micro cracks in oil；
（d）To step（b）Middle retained all slits development well section carries out sidewall coring operation, and to all rock cores of taking-up
Carry out electron-microscope scanning observation, porosity determination, rock strain experiment；
（e）According to above-mentioned well logging and experimental data, the fracture development model of individual well section is established using modeling software；
（f）By the step（a）~（e）For the N mouth wells in same oil-gas exploration and development block, N number of individual well section model is built
Stand as Reservoir Lithofacies three-dimensional cracking development model, wherein, N is the positive integer more than or equal to 2.
2. three-dimensional cracking modeling method according to claim 1, it is characterised in that：Step（b）Described in imaging logging
For micro-resisitivity image（FMI or EMI）.
3. three-dimensional cracking modeling method according to claim 1 or 2, it is characterised in that：Step（c）And step（d）Sequentially
It is adjustable.
4. three-dimensional cracking modeling method according to claim 1 or 2, it is characterised in that：Step（d）Described in rock should
Become experiment to test into triaxial stress rock strain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684435.1A CN107765331A (en) | 2016-08-18 | 2016-08-18 | Three-dimensional cracking modeling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684435.1A CN107765331A (en) | 2016-08-18 | 2016-08-18 | Three-dimensional cracking modeling method |
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| Publication Number | Publication Date |
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| CN107765331A true CN107765331A (en) | 2018-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610684435.1A Withdrawn CN107765331A (en) | 2016-08-18 | 2016-08-18 | Three-dimensional cracking modeling method |
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| CN (1) | CN107765331A (en) |
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2016
- 2016-08-18 CN CN201610684435.1A patent/CN107765331A/en not_active Withdrawn
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Application publication date: 20180306 |