CN106054255A - Shale gas reservoir compressibility evaluation method based on micro-seismic characteristic - Google Patents
Shale gas reservoir compressibility evaluation method based on micro-seismic characteristic Download PDFInfo
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- 238000011156 evaluation Methods 0.000 title claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 230000004044 response Effects 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 4
- 238000011160 research Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001274660 Modulus Species 0.000 description 1
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- 239000003208 petroleum 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
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/44—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging using generators and receivers in the same well
- G01V1/48—Processing data
- G01V1/50—Analysing data
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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 provides a shale gas reservoir compressibility evaluation method based on a micro-seismic characteristic. The evaluation method comprises the following steps of according to logging data used for researching a well area, drilling path data, a rock physical parameter attribute value interpreted by three-dimensional seismic attribute data at a micro-seismic event point response position and micro-seismic event monitoring data, constructing an evaluation analysis platform and establishing a well area space grillwork; in the well area space grillwork, using the rock physical parameter attribute value and the micro-seismic event monitoring data to carry out space matching; extracting the rock physical parameter attribute value; and analyzing a relation of a micro-seismic event density and the rock physical parameter attribute value, finding a rock physical parameter which is sensitive to a micro-seismic event density influence and evaluating reservoir compressibility. In the invention, reservoir compressibility evaluation can be accurately and effectively realized; an acquired shale gas reservoir compressibility evaluation result is used to guide perforation and fracture parameter optimization, which is good for guaranteeing a fracture reconstruction effect; and a construction risk and cost are reduced.
Description
Technical field
The present invention relates to geophysical signal interpretation technique field, more specifically, relate to a kind of special based on microseism
The shale gas reservoir compressibility evaluation methodology of property.
Background technology
In recent years, China's shale gas exploration and development achieves fast development.On a large scale, jumbo fracturing is to realize
The core technology means that unconventional reservoir is effectively exploited, but, still there is correctional effect under expensive pressure break cost the best
Economic risk, identical platform varying level well, the same level well intersegmental volume variance of difference pressure break are big.
Shale gas reservoir compressibility is to ensure that reservoir reconstruction effect important foundation, shale gas reservoir reconstruction effect to be improved,
Realize the economical and effective exploitation of petroleum resources, it is necessary to carry out shale gas reservoir compressibility evaluation, be preferred pressing crack construction section, optimize
Perforation and the important evidence of fracturing parameter.
Therefore, need badly a kind of can the evaluation methodology of shale gas reservoir compressibility.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to solve present in above-mentioned prior art
One or more problems.Such as, an object of the present invention is to provide a kind of shale gas reservoir based on microseism characteristic can
The evaluation methodology of pressure property, the method is mainly used in effect analysis and Optimum Fracturing design, shale gas reservoir after shale gas reservoir pressure
Compressibility evaluation is to ensure that the important foundation of fracturing reform effect, is preferred as fractured horizontal well construction section, parameter optimization
Important evidence.
To achieve these goals, a kind of shale gas reservoir compressibility based on microseism characteristic that provides of the present invention is commented
Valency method.Described evaluation methodology comprises the following steps: according to the research well-log information of wellblock, wellbore trace data, microseism thing
Petrophysical parameter property value that on part point response position, 3-D seismics attribute data is explained and micro-seismic event monitoring materials,
Build evaluation analysis platform and build space, wellblock screen work；In the screen work of space, described wellblock, micro-seismic event point is utilized to respond
Petrophysical parameter property value and micro-seismic event monitoring materials that on position, 3-D seismics attribute data is explained carry out space
Coupling；According to three dimensional space coordinate, extract the rock that on micro-seismic event point response position, 3-D seismics attribute data is explained
Physical parameter property value；Micro-seismic event density and 3-D seismics attribute data on micro-seismic event point response position are analyzed in intersection
The relation of the petrophysical parameter property value explained, finds out the petrophysical parameter sensitive to micro-seismic event Effects of Density,
And be used for evaluating reservoir compressibility.
According to an embodiment of present invention shale gas based on microseism characteristic reservoir compressibility evaluation methodology, described micro-
The petrophysical parameter property value that on seismic events point response position, 3-D seismics attribute data is explained can include fragility, pool
Pine ratio and Young's modulus.
According to an embodiment of present invention shale gas based on microseism characteristic reservoir compressibility evaluation methodology, institute's commentary
Valency analysis platform is one and well logging, drilling well, 3-D seismics attribute data micro-seismic event monitoring materials is unified in the same time
The multi information of territory or same Depth Domain explains working environment.
According to an embodiment of present invention shale gas based on microseism characteristic reservoir compressibility evaluation methodology, can be in order to
By CQ-Geomonitor software (software registration number 2012SR100044) or other industry business software (such as Transform)
Build described evaluation analysis platform.
According to an embodiment of present invention shale gas based on microseism characteristic reservoir compressibility evaluation methodology, described survey
Well data is log, electrobed and RESERVOIR INTERPRETATION result data.
Compared with prior art, the Advantageous Effects of the present invention includes: the method for the present invention can be real accurately and effectively
Show reservoir compressibility evaluation, and the shale gas reservoir compressibility evaluation result obtained is for having instructed perforation and fracturing parameter excellent
Change, advantageously ensure that fracturing reform effect, reduce construction risk and cost.
Accompanying drawing explanation
Will become more clear by the description carried out below in conjunction with the accompanying drawings, the above and other purpose of the present invention and feature
Chu, wherein:
Fig. 1 based on microseism characteristic according to an exemplary embodiment of the present invention shale gas reservoir compressibility evaluation methodology
Flow chart.
Fig. 2 is the shale gas reservoir compressibility evaluation methodology based on microseism characteristic using exemplary embodiment of the present
X well micro-seismic event dot density attribute, brittleness index and Young's modulus value cross plot.
Wherein, " point " in Fig. 2 represents micro-seismic event point, and " arrow " represents linear relationship trend.
Detailed description of the invention
Hereinafter, by combine accompanying drawing and exemplary embodiment describe in detail according to the present invention based on microseism characteristic
Shale gas reservoir compressibility evaluation methodology.In the present invention, microseism characteristic value be also called micro-seismic event dot characteristics value or
The microseism property feature value of micro-seismic event point.Three-dimensional petrophysical parameter attribute data is also called petrophysical parameter attribute
Value, petrophysical parameter value or petrophysical parameter.3-D seismics attribute data is also called 3-D seismics attribute volume or ground
Shake attribute.
Micro-seismic technology is the key technology of reservoir fracturing monitoring, and it can monitor shale gas reservoir fracturing timely and effectively
Transformation crack occurs and the process of development, discloses reservoir fracturing improvement situation, and the micro-seismic event that monitoring result shows occurs close
Degree (i.e. the dense degree of micro-seismic event spatial distribution) directly characterizes the compressibility of reservoir.Thus, the present invention proposes one
Shale gas reservoir compressibility evaluation methodology based on microseism characteristic.
It is in place of the main innovation of the present invention: utilize 3-D seismics attribute and microseism data to carry out spatial match,
To microseism characteristic value petrophysical parameters such as () fragility, Poisson's ratio, Young's moduluss, by analyzing micro-seismic event density and rock
Stone physical parameter relation, achieves reservoir compressibility evaluation accurately and effectively.
Fig. 1 based on microseism characteristic according to an exemplary embodiment of the present invention shale gas reservoir compressibility evaluation methodology
Flow chart.Fig. 2 is the shale gas reservoir compressibility evaluation methodology based on microseism characteristic using exemplary embodiment of the present
X well microevent point brittleness index and Young's modulus cross plot.
As it is shown in figure 1, based on microseism characteristic according to an exemplary embodiment of the present invention shale gas reservoir compressibility is commented
Valency method comprises the following steps:
In step S101, collection research wellblock well-log information, wellbore trace data, 3-D seismics attribute data (fragility,
The petrophysical parameter attribute datas such as Poisson's ratio), microseism Fracturing Monitoring data, set up evaluation analysis platform and to build wellblock empty
Between screen work.
Wherein, " wellblock " refers to the region that shale gas reservoir well fracturing reform micro-seismic event involves.
" well-log information " refers to log, electrobed and RESERVOIR INTERPRETATION result data.
" 3-D seismics attribute data (the petrophysical parameter attribute data such as fragility, Poisson's ratio) " refers to: according to dimensionally
Shake data are predicted the three-dimensional petrophysical parameter attribute data of (or explanation), such as fragility, Poisson's ratio and Young's modulus.
" microseism Fracturing Monitoring data " (or referred to as microseism data, microseism Fracturing Monitoring data, micro-seismic monitoring number
According to, fracturing micro-seismic monitoring data) it is that the region to shale gas reservoir carries out micro-seismic monitoring in hydraulic fracturing process
The data obtained.
Evaluation analysis platform be one by three-dimensional on well-log information, wellbore trace data, micro-seismic event point response position
Petrophysical parameter property value, micro-seismic event monitoring materials that seismic attributes data is explained are unified in same time domain or same
The multi information of one Depth Domain explains working environment.
Solved by 3-D seismics attribute data on well-log information, wellbore trace data, micro-seismic event point response position
The petrophysical parameter property value released and microseism Fracturing Monitoring data are set up evaluation analysis platform and build space, wellblock lattice
Frame is to associate 3-D seismics attribute data and the basis of micro-seismic monitoring data in step S102.
In step S102 and step S103, on association micro-seismic event point response position, 3-D seismics attribute data is solved
The petrophysical parameter property value released and micro-seismic monitoring data also extract micro-seismic event dot characteristics value.Specifically, utilize micro-
Petrophysical parameter property value and micro-seismic monitoring that on seismic events point response position, 3-D seismics attribute data is explained provide
The three dimensional space coordinate relation of material carries out coupling association, and according to three dimensional space coordinate, extracts micro-seismic event point response position
The petrophysical parameter property value that upper 3-D seismics attribute volume is explained, such as fragility, Poisson's ratio, Young's modulus etc..Example
As: a micro-seismic event point M1Its coordinate spatially is (X1, Y1, Z1), spatial density attribute is A1, at same coordinate bit
Put (X1, Y1, Z1), the value of fragility, Poisson's ratio and Young's modulus three-dimensional properties body is B respectively1、C1And D1, then just by B1、C1With
D1Give micro-seismic event point M1, such micro-seismic event point M1Its microseism property feature value just comprises four contents, space
Density A1, fragility B1, Poisson's ratio C1With Young's modulus D1.In like manner analogize, it is possible to obtain micro-seismic event MnMicroseism characteristic special
Value indicative An、Bn、CnAnd Dn。
In step S104, analyze the pass of microseism property feature, i.e. micro-seismic event density and each petrophysical parameter
System, evaluates reservoir compressibility.
On the basis of step S102 and step S103, the characteristic value of combing each microseism point, microseism thing is analyzed in intersection
Part density and each petrophysical parameter, sum up the petrophysical parameter affecting micro-seismic event density sensitive, by microseism thing
Part intensive, analyzes reservoir compressibility, i.e. characterizes reservoir compressibility by micro-seismic event density.As in figure 2 it is shown, find that fragility refers to
Number and micro-seismic event dense degree have preferable relation, and brittleness index color between 30%～40% is relatively deep, microseism thing
Part dense degree is high, and reservoir compressibility is good.
In step S105, output affects the key parameter values (or scope) of reservoir compressibility, terminates.
The key parameter values (or scope) affecting reservoir compressibility of output includes: the quickest to micro-seismic event Effects of Density
The petrophysical parameter of sense and parameter value (or scope), be directly used in that to direct shale gas well pressing crack construction section preferred, perforation and
Fracturing parameter optimizes.
In sum, the evaluation result that the method according to the invention obtains carries out the favourable piecewise analysis of shale gas reservoir, optimizes
Perforation and fracturing parameter, it is ensured that the fracturing reform effect of shale gas reservoir, it is achieved that the economical and effective exploitation of shale gas reservoir.
The method of the present invention has higher accuracy, it is adaptable to unconventional reservoir compressibility is evaluated, and has a extensive future.
Although the most describing the present invention by combining exemplary embodiment, but those skilled in the art should be clear
Chu, in the case of the spirit and scope limited without departing from claim, can be carried out respectively the exemplary embodiment of the present invention
Plant modifications and changes.
Claims (5)
1. a shale gas reservoir compressibility evaluation methodology based on microseism characteristic, it is characterised in that described evaluation methodology bag
Include following steps:
Ring according to the research well-log information of wellblock, wellbore trace data, micro-seismic event monitoring materials and micro-seismic event point
Answer the petrophysical parameter property value that on position, 3-D seismics attribute data is explained, build evaluation analysis platform and build wellblock
Space screen work；
In the screen work of space, described wellblock, the rock that on association micro-seismic event point response position, 3-D seismics attribute data is explained
Stone physical parameter property value and micro-seismic event monitoring materials；
According to three dimensional space coordinate, extract the rock thing that on micro-seismic event point response position, 3-D seismics attribute data is explained
Reason parameter attribute value；
Intersection analyzes what 3-D seismics attribute volume on micro-seismic event density and micro-seismic event point response position was explained
The relation of petrophysical parameter property value, finds out the petrophysical parameter sensitive to micro-seismic event Effects of Density, and by described
It is used for evaluating reservoir compressibility to the petrophysical parameter that micro-seismic event Effects of Density is sensitive.
Shale gas reservoir compressibility evaluation methodology based on microseism characteristic the most according to claim 1, it is characterised in that described
The petrophysical parameter property value that on micro-seismic event point response position, 3-D seismics attribute data is explained includes fragility, Poisson
Ratio and Young's modulus.
Shale gas reservoir compressibility evaluation methodology based on microseism characteristic the most according to claim 1, it is characterised in that described
Evaluation analysis platform is one and is unified in well logging, drilling well, 3-D seismics attribute data, micro-seismic event monitoring materials with for the moment
Between the multi information of territory or same Depth Domain explain working environment.
Shale gas reservoir compressibility evaluation methodology based on microseism characteristic the most according to claim 1, it is characterised in that utilize
Evaluation analysis platform described in CQ-Geomonitor software or Transform software building.
Shale gas reservoir compressibility evaluation methodology based on microseism characteristic the most according to claim 1, it is characterised in that described
Well-log information is log, electrobed and RESERVOIR INTERPRETATION result data.
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Cited By (3)
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| CN107462937A (en) * | 2017-10-09 | 2017-12-12 | 中国石油集团川庆钻探工程有限公司地球物理勘探公司 | Fracture spacing new 3 D geological model construction method after shale gas reservoir pressure |
| CN109407147A (en) * | 2018-10-13 | 2019-03-01 | 中石化石油工程技术服务有限公司 | A kind of microseism-fracturing engineering aggregation of data processing system |
| CN110088647A (en) * | 2016-09-30 | 2019-08-02 | 艾奎诺能源公司 | Improved structural modeling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110088647A (en) * | 2016-09-30 | 2019-08-02 | 艾奎诺能源公司 | Improved structural modeling |
| CN107462937A (en) * | 2017-10-09 | 2017-12-12 | 中国石油集团川庆钻探工程有限公司地球物理勘探公司 | Fracture spacing new 3 D geological model construction method after shale gas reservoir pressure |
| CN109407147A (en) * | 2018-10-13 | 2019-03-01 | 中石化石油工程技术服务有限公司 | A kind of microseism-fracturing engineering aggregation of data processing system |
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