CN105653834B - Fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method - Google Patents
Fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method Download PDFInfo
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Abstract
The present invention provides a kind of fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle and quantitatively determines method, should fracture Transient activity quantitative calculation method based on SEQUENCE STRATIGRAPHIC principle include:Step 1, source direction analysis is carried out;Step 2, SEQUENCE STRATIGRAPHIC section is established;Step 3, stratigraphic unit segments whens carrying out equal, stratigraphic unit subdivision geologic section whens obtaining waiting;Step 4, stratigraphic unit subdivision geologic section, determines instantaneous time whens utilizing etc.;Step 5, stratigraphic unit subdivision geologic section, seeks faulting parameter whens utilizing etc.;And step 6 draws related graph according to the faulting parameter sought, and completes the quantitative calculating of research area fracture Transient activity.The fracture Transient activity quantitative calculation method based on SEQUENCE STRATIGRAPHIC principle, fault activities and reservoir forming factor and oil-gas reservoir are combined, are developed to deposition reservoir, at hydrocarbon for fracture curtain type activity, petroleum conduction and the quantitative study at Tibetan control action provide technical support.
Description
Technical field
The present invention relates to fracture Transient activities quantitatively to calculate correlation theory research, technology application and oil-gas field geology exploration neck
Domain especially relates to a kind of fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle and quantitatively determines method.
Background technology
The most important construction feature of continental faulted basins is to be broken extremely to develop, and the curtain type activity of fracture has run through terrestrial facies and broken
The structural evolution in sunken basin, deposit filling, the overall process of Hydrocarbon Formation Reservoirs.The fault activities control cycle of sedimentation, the storage of depositional phase
The formation and distribution for collecting layer and hydrocarbon source rock have the episode filling of petroleum conduction and oil gas at the fault activities in the stage of Tibetan important
Effect, therefore, the curtain type activity history for studying fracture is significant.Quantitative, dynamic, historic survey are the development of petroleum geology research
Direction, and be broken curtain type activity quantitative study be related to it is less.Currently, the main method of the activity of research growth fault has
Two kinds of the growth index and growth fault drop of tomography.Fault growth index reflects faulting relative intensity, can not be really anti-
The size of the activity of fracture is reflected, and when lower wall lacuna, growth index ∞ loses geological Significance.Growth fault
Drop reflects long period accumulation activity total amount size, can not reflect the variation of Transient activity or activity rate.And person is not
Can accurate expression fracture curtain type activity history, seriously constrain fracture curtain type activity and its to reservoir forming factor and Filling process
Quantitative study.We have invented a kind of new fracture Transient activities based on SEQUENCE STRATIGRAPHIC principle to quantitatively determine method thus, solves
It has determined the above technical problem.
Invention content
The object of the present invention is to provide one kind be applied to the practical exploration process in oil field in fracture curtain type activity to deposition reservoir,
Develop at hydrocarbon and the fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle of the control action of petroleum conduction quantitatively determines method.
The purpose of the present invention can be achieved by the following technical measures:Fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle is fixed
Amount determination method, the fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle quantitatively determine method and include:Step 1, material resource side is carried out
To analysis;Step 2, SEQUENCE STRATIGRAPHIC section is established;Step 3, stratigraphic unit segments whens carrying out equal, and stratigraphic unit segments whens obtaining waiting
Geologic section;Step 4, stratigraphic unit subdivision geologic section, determines instantaneous time whens utilizing etc.;Step 5, stratum is single whens utilizing etc.
Member subdivision geologic section, seeks faulting parameter;And step 6 draws related figure according to the faulting parameter sought
Part completes the quantitative calculating of research area fracture Transient activity;In step 4, stratigraphic unit subdivision geologic section, is asked whens utilizing etc.
The area of stratigraphic unit whens taking each differential etc. is constrained using absolute age as instantaneous time, and it is single to seek stratum whens each differential etc.
Member deposition instantaneous time used;
Successive sedimentation body in a certain given historical time, mark off n it is instantaneous equal whens stratigraphic unit, i-th it is equal whens
Stratigraphic unit deposits instantaneous time used:
Wherein:t0And tnThe corresponding absolute age value in top, bottom of respectively successive sedimentation body;siAts respectively i-th etc.
Layer unit is in main source direction sectional area;
Corresponding instantaneous moment is at the end of stratigraphic unit deposition ats i-th etc.:
Whens 1. 2. calculating each differential etc. using formula stratigraphic unit deposition instantaneous time used and at the end of it is corresponding
Instantaneous moment.
The purpose of the present invention can be also achieved by the following technical measures:
In step 1, carry out sedimentary facies research and Analysis on depositional system, specify main source direction and sedimentary system involves
Spatial dimension.
In step 2, it along main source direction, establishes well-shake and connects well profile, using seismic reflection lineups top/baselap, cut
It cuts feature and brill/well-log information identification sequence interface, flood surface or deposition conversion surface establishes sequence by interpretive tracing
Stratigraphic section determines accretion, moves back product and the spatial distribution into product unit.
In step 3, it is constraint with seismic event, attitude of stratum, in accretion, moves back product, into whens in product unit, carrying out equal
Stratigraphic unit segments, by Time-depth conversion and compaction correction, stratigraphic unit subdivision geologic section whens obtaining waiting.
In steps of 5, stratigraphic unit subdivision geologic section whens utilizing etc., reads the differential etc. near upper and lower two disk of tomography
When stratigraphic unit thickness, seek the instantaneous drop of tomography and fault activity ratio these parameters.
In step 6, according to the instantaneous drop of the tomography sought, accumulation drop, up/down disk deposition rate, fault growth speed
These parameters of rate draw related graph, including upper lower burrs deposition rate changes over time figure, fault activity ratio changes over time
Figure, instantaneous drop change over time figure, accumulation drop changes over time figure.
The fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle in the present invention quantitatively determines method, former based on SEQUENCE STRATIGRAPHIC
Reason, using the information being stored in geologic(al) formation, carrys out the instantaneous activity of study of fault.Concrete operations flow includes source direction
Analysis, SEQUENCE STRATIGRAPHIC section establish, etc. whens stratigraphic unit subdivision, instantaneous time is determining, faulting parameter is sought, related graph
6 steps such as drafting.The fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, is joined by tomography Transient activity
Number is quantitative to be calculated, and using the time as tie, fault activities and reservoir forming factor and oil-gas reservoir are combined, are lived for breakup phase formula
It is dynamic to provide technical method to deposition reservoir, at hydrocarbon evolution, petroleum conduction and at the quantitative study for hiding control action.
Description of the drawings
Fig. 1 is that the fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle of the present invention quantitatively determines a specific embodiment of method
Flow chart;
Fig. 2 calculates a point location drawing for A recess sequence stratigraphic sections in the specific embodiment of the present invention and deposition rate;
Fig. 3 be the present invention a specific embodiment in A be recessed X group section deposition period different locations deposition rate-time
Graph of relation;
Fig. 4 is the instantaneous drop of A recess X group section B tomographies, accumulative drop-time relationship in the specific embodiment of the present invention
Figure;
Fig. 5 is A recess X group section B hanging walls deposition rate-time curve in the specific embodiment of the present invention
Figure.
Specific implementation mode
For enable the present invention above and other objects, features and advantages be clearer and more comprehensible, it is cited below particularly go out preferable implementation
Example, and coordinate institute's accompanying drawings, it is described in detail below.
As shown in FIG. 1, FIG. 1 is the streams that the fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle of the present invention quantitatively determines method
Cheng Tu.
In step 101, source direction analysis is carried out.
Carry out sedimentary facies research and Analysis on depositional system, specifies the spatial dimension that main source direction and sedimentary system involve.A
Be recessed west and south X group section major developmental delta sedimentary systems, and by southwest, direction promotes material resource northeastward, and deposition feeds through to recess
Centre.Flow enters step 102.
In step 102, the foundation of SEQUENCE STRATIGRAPHIC section is carried out.
Along principal goods source north north east direction, establishes well-shake and connect well profile and (involve from X group sections deposition starting point to sedimentary system
Farthest point), using seismic reflection lineups top/baselap, cut cut feature and brill/well-log information identification sequence interface, flood surface or
Deposition conversion surface establishes SEQUENCE STRATIGRAPHIC section by interpretive tracing, determine accretion, move back product and progradation (reference plane rise and
Decline hemicycle) unit spatial distribution.Flow enters step 103.
In step 103, stratigraphic unit segments whens carrying out equal.
It is constraint with seismic event, attitude of stratum, in accretion, moves back that product, (system tract or reference plane half is revolved into product unit
Return) in, stratigraphic unit segments whens wait, and by Time-depth conversion and compaction correction, stratigraphic unit subdivision geology is cutd open whens obtaining equal
Face.Stratigraphic unit whens dune shape sequence is subdivided into 18 etc. by experiment section.Due to the system tract or reference plane hemicycle of sequence
For successive sedimentation, theoretically, in the case where attitude of stratum is constraint, stratum differentiation element can be infinitely small whens waiting.
For 3,4 grades and following rank sequence unit, it is proposed that following assume:
(1) it is successive sedimentation inside geologic body, is interrupted and is only limitted in sequence boundaries;
(2) same material resource system, same sequence or the cycle of sedimentation, sediment supply rate stabilization;
(3) same sequence or the cycle of sedimentation, stratigraphic unit volume is directly proportional to main source direction sectional area whens waiting.
Flow enters step 104.
In step 104, instantaneous time determination is carried out.
Stratigraphic unit subdivision geologic section, seeks the area of stratigraphic unit whens each differential etc., utilizes base area whens utilizing etc.
Layer chronological table, determine sequence top, bottom interface absolute age numerical value as instantaneous time obligatory point.According to the vacation in step 103
If, it is assumed that the successive sedimentation body in a certain given historical time, mark off n it is instantaneous equal whens stratigraphic unit, i-th it is equal whens
Layer unit deposits instantaneous time used:
Wherein:t0And tnThe corresponding absolute age value in top, bottom of respectively successive sedimentation body;siAts respectively i-th etc.
Layer unit is in main source direction sectional area.
Corresponding instantaneous moment is at the end of stratigraphic unit deposition ats i-th etc.:
t0It can be quantitatively determined by the methods of isotope tracling method.Only need the absolute age by a differentiation element as about
Beam, so that it may the momentary interval and top, bottom interface that stratigraphic unit deposits whens 1. 2. calculating each differential etc. using formula
Absolute age.Flow enters step 105.
In step 105, carries out faulting parameter and seek.According to the hypothesis in step 103, it is assumed that in a certain given history
Successive sedimentation body in time marks off stratigraphic unit whens n is a instantaneously to be waited, utilizes geologic(al) formation information computed tomography growth rate
Method is as follows:
When stratigraphic unit body deposits ats i-th etc., the upper and lower disk deposition rate of tomography and fault activity ratio are respectively:
Hanging wall deposition rate:
Footwall deposition rate:
Fault activity ratio:
Wherein:Vi、vi、vfi, be respectively i-th etc. whens stratigraphic unit deposit when fault activity ratio;HiAnd hiRespectively
Stratigraphic unit upper and lower disk formation thickness ats i-th etc.;△tiFor i-th of deposition of stratigraphic unit whens equal instantaneous time used.
Stratigraphic unit subdivision geologic section whens utilizing etc., stratigraphic unit whens reading the differential etc. near upper and lower two disk of tomography
Thickness, deposition rate, fault activity ratio, instantaneous drop, the accumulation parameters such as drop are 3. 4. 5. sought using formula.Flow into
Enter to step 106.
In step 106, related Drawing Figures are carried out.
It can according to parameters such as the instantaneous drop of the tomography sought, accumulation drop, up/down disk deposition rate, fault activity ratios
To draw related graph.As upper lower burrs deposition rate changes over time figure, fault activity ratio changes over time figure, instantaneous drop
Change over time figure, accumulation drop changes over time figure etc..The quantitative calculating of Transient activity is broken so as to complete research area.
In the specific embodiment of the application present invention, research object is that the B tomographies of A recess are grown in Paleogene System X group sections
Rate and Transient activity quantitative parameter analysis think that the recess is continental faulted basins by the comprehensive analysis of geologic information.It is logical
Many-sided Information integration analysis such as well data, seismic data and analytical test is crossed, specifies main source direction and sedimentary system wave
And spatial dimension.Along main source direction, establishes well-shake and connect well profile (auto-deposition starting point to sedimentary system involves farthest
Point), stratigraphic unit segments whens carrying out equal, and by Time-depth conversion and compaction correction, stratigraphic unit subdivision geology is cutd open whens obtaining waiting
Face, stratigraphic unit whens sequence is subdivided into 18 etc., as shown in Figure 2.
Stratigraphic unit subdivision geologic section whens utilizing etc., stratigraphic unit whens reading the differential etc. near upper and lower two disk of tomography
Thickness, deposition rate, fault activity ratio, instantaneous drop, the accumulation parameters such as drop are 3. 4. 5. sought using formula, such as table 1
It is shown.
Table 1A recess X group section B fault activity parameter result of calculations
Growth rate and instantaneous activity to the B tomographies of A recess work out corresponding graph, and (upper disk deposition rate becomes at any time
Change figure, fault activity ratio change over time figure, instantaneous drop changes over time figure, accumulation drop changes over time figure), such as scheme
3, shown in Fig. 4, Fig. 5.These graphs can intuitively express the quantization characteristic of faulting, be study of fault curtain type activity and
It is of great significance to deposition, at the control action of Tibetan.
The fracture Transient activity for growth fault in the present invention quantitatively determines method, based on SEQUENCE STRATIGRAPHIC and construction point
The fault activity ratio that phase separation combines determines method.It uses SEQUENCE STRATIGRAPHIC principle, according to the information being stored in geologic(al) formation,
The instantaneous activity for carrying out study of fault, can inverting according to the information such as formation thickness in sedimentary record, Fill models are retained in
The changing rule of tomography Transient activity amount and activity rate.It forms a kind of fairly perfect, easy to operate, suitable for production deployment
Fracture Transient activity quantitatively determine method, can oil field prospecting deployment in the widely applied fracture Transient activity side of quantitatively determining
Method.Further perfect fault activity research method, be fracture curtain type activity develop to deposition reservoir, at hydrocarbon, petroleum conduction
And provide new Research Thinking and technological means at the quantitative study for hiding control action.This method is primarily adapted for use in terrestrial facies rift
The fracture Transient activity of basin active fault quantitatively calculates.Using the fracture Transient activity quantitative result that this method is completed, can be
Reservoir is deposited, is developed at hydrocarbon, Hydrocarbon Formation Reservoirs research provides strong directive function.
Claims (6)
1. the fracture Transient activity based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, which is characterized in that should be former based on SEQUENCE STRATIGRAPHIC
The fracture Transient activity of reason quantitatively determines method and includes:
Step 1, source direction analysis is carried out;
Step 2, SEQUENCE STRATIGRAPHIC section is established;
Step 3, stratigraphic unit segments whens carrying out equal, stratigraphic unit subdivision geologic section whens obtaining waiting;
Step 4, stratigraphic unit subdivision geologic section, determines instantaneous time whens utilizing etc.;
Step 5, stratigraphic unit subdivision geologic section, seeks faulting parameter whens utilizing etc.;
Step 6, according to the faulting parameter sought, related graph is drawn, completes the quantitative scoring of research area fracture Transient activity
It calculates;In step 4, stratigraphic unit subdivision geologic section, seeks the area of stratigraphic unit whens each differential etc. whens utilizing etc., using exhausted
Age is constrained as instantaneous time, seeks the instantaneous time that stratigraphic unit deposition is used whens each differential etc.;
Successive sedimentation body in a certain given historical time, mark off n it is instantaneous equal whens stratigraphic unit, i-th it is equal whens stratum
Instantaneous time used in unit deposition is:
Wherein:t0And tnThe corresponding absolute age value in top, bottom of respectively successive sedimentation body;siStratum is single ats respectively i-th etc.
Member is in main source direction sectional area;
Corresponding instantaneous moment is at the end of stratigraphic unit deposition ats i-th etc.:
Whens 1. 2. calculating each differential etc. using formula stratigraphic unit deposition instantaneous time used and at the end of it is corresponding instantaneous
Moment.
2. the fracture Transient activity according to claim 1 based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, feature exists
In in step 1, development sedimentary facies research and Analysis on depositional system specify the space that main source direction and sedimentary system involve
Range.
3. the fracture Transient activity according to claim 1 based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, feature exists
In, in step 2, along main source direction, establish well-shake and connect well profile, using seismic reflection lineups top/baselap, cut cut spy
Sign and brill/well-log information identification sequence interface, flood surface or deposition conversion surface establish SEQUENCE STRATIGRAPHIC by interpretive tracing
Section determines accretion, moves back product and the spatial distribution into product unit.
4. the fracture Transient activity according to claim 1 based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, feature exists
In being constraint with seismic event, attitude of stratum in step 3, in accretion, move back product, into stratum whens in product unit, carrying out equal
Unit subdivision, by Time-depth conversion and compaction correction, stratigraphic unit subdivision geologic section whens obtaining equal.
5. the fracture Transient activity according to claim 1 based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, feature exists
In, in steps of 5, stratigraphic unit subdivision geologic section whens utilizing etc., stratum whens reading the differential etc. near upper and lower two disk of tomography
The thickness of unit seeks the instantaneous drop of tomography and fault activity ratio these parameters.
6. the fracture Transient activity according to claim 1 based on SEQUENCE STRATIGRAPHIC principle quantitatively determines method, feature exists
In, in step 6, according to the instantaneous drop of the tomography sought, accumulation drop, up/down disk deposition rate, fault activity ratio these
Parameter draws related graph, including upper lower burrs deposition rate changes over time figure, fault activity ratio changes over time figure, instantaneous
Drop changes over time figure, accumulation drop changes over time figure.
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