CN107367757A - The depicting method of the disconnected solution of carbonate rock - Google Patents
The depicting method of the disconnected solution of carbonate rock Download PDFInfo
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- CN107367757A CN107367757A CN201710595432.5A CN201710595432A CN107367757A CN 107367757 A CN107367757 A CN 107367757A CN 201710595432 A CN201710595432 A CN 201710595432A CN 107367757 A CN107367757 A CN 107367757A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000011435 rock Substances 0.000 title claims abstract description 16
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 3
- 239000002131 composite material Substances 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000012512 characterization method Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000700 radioactive tracer Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G01V1/307—Analysis for determining seismic attributes, e.g. amplitude, instantaneous phase or frequency, reflection strength or polarity
-
- 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
- G01V2210/63—Seismic attributes, e.g. amplitude, polarity, instant phase
-
- 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
- G01V2210/64—Geostructures, e.g. in 3D data cubes
- G01V2210/641—Continuity of geobodies
-
- 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
- G01V2210/64—Geostructures, e.g. in 3D data cubes
- G01V2210/645—Fluid contacts
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of depicting method of the disconnected solution of carbonate rock.Wherein method includes：Post-stack inversion is carried out to seismic data, obtains underground Acoustic Impedance Data；Calculate the ant body attribute of seismic data；It is determined that representing the ant body attribute thresholds of fault development, through-carved work processing is carried out to the ant body attribute according to the ant body attribute thresholds；Using the underground Acoustic Impedance Data as background data, the ant body attribute after through-carved work is handled is stacked on the Acoustic Impedance Data of underground, realizes that Reservoir Body is portrayed with what is be broken.The Acoustic Impedance Data and ant body attribute that this programme is calculated using geological data, the technology being stacked using figure carries out the comprehensive characterization of the disconnected solution of carbonate rock, it can realize that Reservoir Body and the synthesis of fracture are portrayed, can help reservoir geology personnel more clearly epistemically under oil pool distribution and filling path, provide data basis for follow-up well site deployment and reservoir model-building.
Description
Technical field
The present invention relates to the production seismics method in oil reservoir development, and in particular to a kind of side of portraying of the disconnected solution of carbonate rock
Method.
Background technology
Disconnected solution oil reservoir reservoir space is based on large-scale cave or corrosion hole, by karst water and Characteristics of Fault Developed shadow
Ring, breaking, solution oil reservoir internal structure is extremely complex, and vertically and horizontally anisotropism is extremely strong for reservoir space.In addition, oil reservoir development is shown, from
The well location for splitting deployment is cut-off, even if Reservoir Body physically well develops, is filled path effects by oil reservoir, production capacity is often poor.Therefore, break molten
Body oil reservoir portrays needs while Reservoir Body and fracture is portrayed.
Current disconnected solution oil reservoir depicting method is broadly divided into following a few classes：
(1) reservoir prediction (patent No. in plane is carried out using amplitude change rate technology：CN201010534865.8).
The technology can be conveniently used for the selection of well location in plane, but can not characterize longitudinal architectural feature；
(2) energy body technique is utilized, it is special that distribution of the beading anomalous body in longitudinal direction can be portrayed by the calculating of amplitude envelope
Sign (Bao allusion quotation, the Compartmentalization description technique study of the disconnected solution oil reservoir of Zhang Huitao Carbonate Rocks In Tahe Oilfields, Xinjiang's oil and gas,
2017).The technology is influenceed by wavelet side lobe effect so that Reservoir Body scale is bigger than normal, it is more difficult to the longitudinal subdivision of Reservoir Body
Portrayed；
(3) using the successional seismic properties of earthquake are calculated, such as relevant, ant body, the fault development spy for portraying underground
Sign (Wu Bo etc., application of the ant tracer technique in fracture-pore reservoir FRACTURE PREDICTION, fault-blcok oil-gas field, 2014).But can not
The degree of crushing of fracture is portrayed；
(4) using tensor attribute, (Lee is first-class, and gradient-structure tensor analysis method is in three dimensional seismic data channel sand prediction
Application, gas industry, 2011), calculate the discontinuity of the underground space, carry out being broken fracture area in conjunction with data on well
Portray, but portraying for Reservoir Body can not be characterized.Never ipsilateral has carried out the sign of carbonate rock Reservoir Body to above method,
But any technology can not portray Reservoir Body and breaking morphology simultaneously.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide it is a kind of can portray simultaneously Reservoir Body and fracture carbonate
The depicting method of the disconnected solution of rock.
The depicting method of solution according to an aspect of the invention, there is provided a kind of carbonate rock breaks, including：
Post-stack inversion is carried out to seismic data, obtains underground Acoustic Impedance Data；
Calculate the ant body attribute of seismic data；
It is determined that the ant body attribute thresholds of fault development are represented, according to the ant body attribute thresholds to the ant body category
Property carry out through-carved work processing；
Using the underground Acoustic Impedance Data as background data, the ant body attribute after through-carved work is handled is stacked in underground
On Acoustic Impedance Data, realize that Reservoir Body is portrayed with what is be broken.
Further, described to carry out post-stack inversion to seismic data, obtaining underground Acoustic Impedance Data is specially：Using based on
The inversion method of model carries out post-stack inversion to seismic data, obtains underground Acoustic Impedance Data.
Further, it is described that post-stack inversion is carried out to seismic data, obtain underground Acoustic Impedance Data and further comprise：
Step 1, using Geological Mode as guidance, well-log information is combined with seismic data, establishes initial geological model；
Step 2, statistical wavelet is extracted according to the seismic data, carrying out forward modeling to the initial geological model is closed
Into record；
Step 3, the composite traces is fitted with seismic data, judges whether fitting result meets preparatory condition,
If so, then terminate iteration；If it is not, then ask for the residual error between the composite traces and the seismic data；
Step 4, using the parameter of the residual error adjustment initial geological model, step 2 is continued executing with.
Further, it is described to be fitted composite traces and seismic data specially：It will be synthesized using least squares method
Record is fitted with seismic data.
Further, it is described to determine that representing the ant body attribute thresholds of fault development is specially：According to well-log information to institute
State ant body attribute to be demarcated, it is determined that representing the ant body attribute thresholds of fault development.
Further, the ant body attribute thresholds for representing fault development are [- 0.44,1].
The present invention obtains underground Acoustic Impedance Data by carrying out post-stack inversion to seismic data；Calculate the ant of seismic data
Ant body attribute；It is determined that representing the ant body attribute thresholds of fault development, ant body attribute is carried out according to ant body attribute thresholds
Through-carved work processing；Using underground Acoustic Impedance Data as background data, the ant body attribute after through-carved work is handled is stacked in ground
On lower Acoustic Impedance Data, realize that Reservoir Body is portrayed with what is be broken.The present invention combines wave impedance inversion and ant body attribute can
Portrayed while realizing disconnected solution oil reservoir Reservoir Body and fracture, improve the predictive ability of disconnected solution, reservoir geology people can be helped
Member more clearly epistemically lower oil pool distribution and fills path, and data base is provided for follow-up well site deployment and reservoir model-building
Plinth.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows the flow chart of the depicting method according to a kind of disconnected solution of carbonate rock of the present invention；
Fig. 2 a show according to embodiments of the present invention one seismic data；
Fig. 2 b show according to embodiments of the present invention one underground Acoustic Impedance Data；
Fig. 3 shows according to embodiments of the present invention one ant body attribute；
Fig. 4 a show the ant body attribute after according to embodiments of the present invention one through-carved work processing；
Fig. 4 b show that according to embodiments of the present invention one Reservoir Body portrays result with what is be broken.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Fig. 1 shows the flow chart of the depicting method according to a kind of disconnected solution of carbonate rock of the present invention, and this method is included such as
Lower step：
Step S101：Post-stack inversion is carried out to seismic data, obtains underground Acoustic Impedance Data, the purpose is to carbonate rock
The Reservoir Body of disconnected solution is portrayed.
Optionally, post-stack inversion is carried out to seismic data using based on the inversion method of model, obtains underground wave impedance number
According to.
Further, post-stack inversion is carried out to seismic data using based on the inversion method of model, obtains underground wave impedance
Data include：
Step 1, using Geological Mode as guidance, well-log information is combined with seismic data, establishes initial geological model；
Step 2, statistical wavelet is extracted according to seismic data, carrying out forward modeling to initial geological model obtains composite traces；
Step 3, composite traces and seismic data are fitted, judge whether fitting result meets preparatory condition, if so,
Then terminate iteration；If it is not, then ask for the residual error between composite traces and seismic data；
Step 4, the parameter of initial geological model is adjusted using residual error, continues executing with step 2.
Optionally, composite traces and seismic data are fitted specially in step 3：It will be synthesized using least squares method
Record is fitted with seismic data.Judge whether composite traces and the result of seismic data fitting meet preparatory condition, for example,
Composite traces, through over-fitting, when both difference meet minimum condition, terminates iteration with seismic data.
Step S102：Calculate the ant body attribute of seismic data.
Ant body fracture tracer technique is extension of the image processing techniques in D seismic data processing, including image side
Edge sharpens, the enhancing of reflecting segment continuity and the technology such as Edge Following, the prominent response with cut surface character, then computing and is formed
One low noise, the ant body attribute with clear splitting traces, ant body tracer technique fracture accuracy of detection is of a relatively high, especially
It can also obtain good Detection results when seismic data quality is higher, to the less fracture of yardstick.Ant body attribute pair
Fracture abnormal belt position entirety corresponding relation is preferable, and the geological phenomenon of description is linear section, it is of interest that the extension in crack
And trend, it is karst corrosion, the passage of hydrocarbon charge, it is emphasised that oil gas is along extension and its connectedness.
Step S103, it is determined that the ant body attribute thresholds of fault development are represented, according to ant body attribute thresholds to ant body
Attribute carries out through-carved work processing, and the purpose is to the fracture for the solution that breaks to carbonate rock to portray.
Well logging is using geophysical properties such as the electrochemical properties of rock stratum, conductive characteristic, acoustic characteristic, radioactivity, is surveyed
The method for measuring geophysical parameterses, analyzed by the well-log information obtained to well logging, to obtain various petroleum geologies and skill
Art data.
Optionally, ant body attribute is demarcated according to well-log information, it is determined that representing the ant body attribute of fault development
Threshold value.
Step S104, using underground Acoustic Impedance Data as background, the ant body attribute after through-carved work is handled is stacked in ground
On lower Acoustic Impedance Data, portraying for Reservoir Body and fracture is realized, the technology being stacked using figure, realizes that carbonate rock breaks solution
Reservoir Body and portray while fracture.
The present invention obtains underground Acoustic Impedance Data by carrying out post-stack inversion to seismic data；Calculate the ant of seismic data
Ant body attribute；It is determined that representing the ant body attribute thresholds of fault development, ant body attribute is carried out according to ant body attribute thresholds
Through-carved work processing；Using underground Acoustic Impedance Data as background data, the ant body attribute after through-carved work is handled is stacked in ground
On lower Acoustic Impedance Data, realize that Reservoir Body is portrayed with what is be broken.The present invention combines wave impedance inversion and ant body attribute can
Portrayed while realizing disconnected solution oil reservoir Reservoir Body and fracture, improve the predictive ability of disconnected solution, reservoir geology people can be helped
Member more clearly epistemically lower oil pool distribution and fills path, and data base is provided for follow-up well site deployment and reservoir model-building
Plinth.
Fig. 2 a show according to embodiments of the present invention one seismic data, choose the work area of disconnected solution development as the present invention
Exemplary application work area, and choose the representative section that a vertical disconnected solution development belt is moved towards in work area and analyzed, Fig. 2 b show
According to embodiments of the present invention one wave impedance section figure is gone out.As illustrated in FIG. 2, wave impedance inversion eliminates wavelet secondary lobe effect
Should, its longitudinal frame is higher than seismic data, can preferably portray the spatial shape and its Distribution Characteristics of fracture hole, improve storage
Layer precision of prediction.
Fig. 3 shows according to embodiments of the present invention one ant body attribute, and it is relative that ant tracer technique is broken accuracy of detection
It is higher, when especially seismic data quality is higher, good Detection results can also be obtained to the less fracture of yardstick.Such as Fig. 3
Shown, ant body attribute depicts the tiny fracture for resolving development inside solution well, for solution hydrocarbon charge road of breaking
Footpath analysis, inter-communicational relationship analysis, remaining oil description etc. provide foundation, are achieved in actual well location application deployment preferably
Effect.
Fig. 4 a show the ant body attribute after according to embodiments of the present invention one through-carved work processing, choose in work area and bore
The horizontal well and sidetracked hole of disconnected solution are met, ant body attribute is demarcated according to well-log information, it is determined that representing fault development
Threshold value, through-carved work processing is carried out according to threshold value, in the present embodiment threshold value according to it is actual bore meet and take after well demarcation and be defined as [-
0.44,1].
Fig. 4 b show that according to embodiments of the present invention one Reservoir Body portrays result with what is be broken, with underground Acoustic Impedance Data
For background data, the ant body attribute after through-carved work is handled is stacked on the Acoustic Impedance Data of underground, will be passed through at engraving
Ant body attribute after reason carries out merging display with underground Acoustic Impedance Data, and the synthesis for obtaining Reservoir Body and fracture portrays knot
Fruit.As illustrated in FIG. 4, break inside solution and Reservoir Body development position and its to be portrayed with the space configuration relation of fracture very clear
It is clear, carry out identical rate analysis with real drilling well and also obtain high identical rate.
In the specification that this place provides, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice in the case of these no details.In some instances, known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
In the specification that this place provides, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice in the case of these no details.In some instances, known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
One of meaning mode can use in any combination.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of some different elements and being come by means of properly programmed computer real
It is existing.In if the unit claim of equipment for drying is listed, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
Claims (6)
- The depicting method of solution 1. a kind of carbonate rock breaks, it is characterised in that the described method comprises the following steps：Post-stack inversion is carried out to seismic data, obtains underground Acoustic Impedance Data；Calculate the ant body attribute of seismic data；It is determined that representing the ant body attribute thresholds of fault development, the ant body attribute is entered according to the ant body attribute thresholds The processing of row through-carved work；Using the underground Acoustic Impedance Data as background data, the ant body attribute after through-carved work is handled is stacked in underground wave resistance On anti-data, realize that Reservoir Body is portrayed with what is be broken.
- 2. according to the method for claim 1, it is characterised in that it is described that post-stack inversion is carried out to seismic data, obtain underground Acoustic Impedance Data is specially：Post-stack inversion is carried out to seismic data using based on the inversion method of model, obtains underground wave impedance Data.
- 3. according to the method for claim 2, it is characterised in that it is described that post-stack inversion is carried out to seismic data, obtain underground Acoustic Impedance Data further comprises：Step 1, using Geological Mode as guidance, well-log information is combined with seismic data, establishes initial geological model；Step 2, statistical wavelet is extracted according to the seismic data, carrying out forward modeling to the initial geological model obtains synthesis note Record；Step 3, the composite traces is fitted with seismic data, judges whether fitting result meets preparatory condition, if so, Then terminate iteration；If it is not, then ask for the residual error between the composite traces and the seismic data；Step 4, using the parameter of the residual error adjustment initial geological model, step 2 is continued executing with.
- 4. according to the method for claim 3, it is characterised in that described to be fitted composite traces and seismic data specifically For：Composite traces and seismic data are fitted using least squares method.
- 5. according to the method for claim 1, it is characterised in that the ant body attribute thresholds for determining to represent fault development Specially：The ant body attribute is demarcated according to well-log information, it is determined that representing the ant body attribute thresholds of fault development.
- 6. according to the method for claim 1, it is characterised in that the ant body attribute thresholds for representing fault development as [- 0.44,1].
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| CN110488385A (en) * | 2019-09-20 | 2019-11-22 | 西南石油大学 | The production method of the disconnected solution model of three-dimensional |
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