CN105651966A - Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method - Google Patents
Shale oil and gas high-quality reservoir stratum evaluation method and parameter determination method Download PDFInfo
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Abstract
The invention discloses a shale oil and gas high-quality reservoir stratum evaluation method. The method comprises the steps that outcrop, drill core and shale log data information is collected in a systematic mode, fine sampling is conducted, quantitative testing is conducted in a laboratory, experimental measurement data such as the content, feature and proportion of brittle minerals in shale is obtained, shale reservoir stratum evaluation data of a research region and shale reservoir stratum evaluation data of a target layer are divided, the advantages and disadvantages of the research region and target layer reservoir space are divided quantitatively, evaluation values are given, and a shale oil and gas reservoir stratum advantage and disadvantage evaluation profile map and planar graph are drawn. The shale oil and gas high-quality reservoir stratum evaluation method is provided based on shale oil reservoir stratum evaluation, and evaluation parameters specifically include the organic geochemistry parameter representing oil source conditions, the reservoir stratum feature parameter representing shale oil enrichment conditions, and the parameter representing shale oil mining conditions, wherein the organic geochemistry parameter representing raw oil conditions is an important index.
Description
Technical field
The present invention relates to a kind of shale oil gas high-quality reservoir evaluation methods and parameter determination method.
Background technology
Set up shale oil gas reservoir appraisement system, to study shale oil gas reservoir space type and formation, developmental mechanism, it is the important part in this area. The research that mud shale preserves space is more careful, petrology, preserves space microfracture and also grows very much in shale oil reservoir, and type is various, the origin cause of formation can be divided into structure seam, interlayer seam, mineral shrinkage joint and give birth to hydrocarbon superpressure seam etc. Wherein, grow the most with horizontal interlayer seam, contact position between not congruent lamina, differences of mechanical properties is relatively big, easily forms crack, and parallel bedding, length is big, and more continuously, mineral shrinkage crack major developmental is in clay mineral, in diagenetic process, clay mineral transformation dehydration and organic matter row's hydrocarbon, cause shrinking between sheet clay mineral layer producing crack; And microstructural fracture is mainly oblique, seam face is more straight, common lamina mistake is disconnected, the seepage channel of shale reservoir how it is not only by carbonate minerals filling microfracture, can play and link up oil gas and improve the effect of physical property, and be conducive to the man-made fracture of later stage fracturing reform to cross with nature crack forming netted seam. DIFFERENT DEPOSITIONAL ENVIRONMENTS, its material source is different, and sedimental transport distance is different, water medium condition is not equal, have impact on the content of shale mineral and type, particularly fragility mineral content, clay mineral content and type etc., what seriously govern shale preserves physical property condition. The type of mineral in shale is had direct control action kou by the lithology of source area parent rock, and the transport distance in later stage, water medium condition etc. also can change type and the content of mineral; The shale do not grown when jljl source condition and deposition process, mineral type and content wherein have certain otherness, and the shale oil gas reservoir distribution of different minerals content and type feature has certain regularity, the forming and distribution analyzing shale oil gas high-quality reservoir is had vital role by this.
Summary of the invention
It is an object of the invention to propose a kind of shale oil gas high-quality reservoir evaluation parameter defining method, it adopts following technical scheme:
A kind of shale oil gas high-quality reservoir evaluation parameter defining method, comprises the steps:
A collects, arranges the basic geology condition information that shale oil gas reservoir evaluates district;
B carries out the division of evaluating reservoir unit;
C determines the thickness containing oil gas mud shale section;
D determines the distribution area containing oil gas mud shale section and final condition parameter;
E determines the density of mud shale, physical parameter and rock mechanics parameter;
F determines shale oil gas reservoir index system;
G sets up shale oil gas reservoir index model, and this index model comprises the three-dimensional grading evaluation index model of shale oil gas reservoir and shale oil gas reservoir evaluates mathematical model;
H carries out shale oil gas reservoir evaluation space-time network confidence level and sentences knowledge: knows effect better if sentencing, then forwards step I to; If it is poor to sentence knowledge effect, then forward step g to;
I sets up shale oil gas high-quality reservoir evaluation parameter, mathematical model.
Preferably, described step b specifically comprises the division of evaluation unit plane and evaluation unit longitudinally division.
Preferably, described step c comprises foundation drilling well data containing the thickness defining method of oil gas mud shale section and determine that reservoir net thickness, foundation field geological profile are determined reservoir thickness, determined main reservoir thickness according to seismic section containing TOC amount.
Preferably, the mud shale density in rigidity mineral probability distribution trend, numerical simulation determining step e, physical parameter and rock mechanics parameter is utilized.
Preferably, in described step f, shale oil gas reservoir index system comprises actual measurement mineral type, rigidity mineral content, rigidity mineral spatial distribution and clay mineral type and ratio thereof.
Preferably, the method setting up shale oil gas reservoir index model in described step g comprises reservoir space volumetric method, reservoir space evaluates analogy method or reservoir space specific surface area mathematics calculates method.
Preferably, described step h is specially: the exploration practices in the index model of step g foundation and study area or test data of experiment are contrasted; If degree of matching is more than 80%, then better for sentencing knowledge effect; If coincide, degree is lower than 80%, then poor for sentencing knowledge effect.
In addition, the invention allows for a kind of shale oil gas high-quality reservoir evaluation methods, it adopts following technical scheme:
A kind of shale oil gas high-quality reservoir evaluation methods, comprises the steps:
The collection of the various data of a shale oil gas reservoir and parameter, comprises macrostructure interface and characteristic of division parameter acquisition, and microstructure data gathering;
B is by rock-mineral analysis and qualification, well logging information extracts and the meticulous identification of fine-grained sediment logging trace, the transformation of space later stage is followed the trail of and preserved to the rudimentary boundary surface of reservoir structure, developing obtains reservoir sedimentation type and sequence with maintenance combination, and reservoir structural plane by deposition and combination; Extracted and the meticulous identification of fine-grained sediment logging trace by well logging information, the rudimentary boundary surface of reservoir structure is followed the trail of, spatial classification is comprehensively classified, names and preserved to rock association, evaluation combination obtains reservoir deposition Macrocosm and microcosm index and crosses, reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy;
C crosses according to reservoir sedimentation type and sequence, reservoir structural plane by deposition and combination, and reservoir deposition Macrocosm and microcosm index and obtains reservoir depositional texture space, model, screen work and relevant parameter; According to reservoir structural plane by deposition and combination, reservoir deposition Macrocosm and microcosm index crosses, and reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy obtains high-quality and preserves in the geology evolutionary process of space variation and keep parameter;
D preserves variation and maintenance parameter in the geology evolutionary process of space according to reservoir depositional texture space, model, screen work and relevant parameter and high-quality and determines high-quality reservoir parameter;
E utilizes above-mentioned high-quality reservoir parameter to carry out reservoir structure and portrays, and the spatial parameter that preserves that Binding experiment test obtains is set up reservoir and deposited fine Cause Structure model.
Preferably, the process of establishing that in described step e, reservoir deposits fine Cause Structure model is specially: first reservoir carries out meticulous sedimentary micro-environment analysis, secondly reservoir is carried out meticulous depiction, and then the corresponding relation set up between sedimentary micro-environment and the fine genetic feature of reservoir.
Tool of the present invention has the following advantages:
The present invention mainly comprises: systematic collection outcrop, boring rock core, mud shale log data data, meticulous sampling and by experiment room carry out quantitative test, obtain test data of experiment such as contained in mud shale fragility mineral content, feature, ratio, the mud shale reservoir evaluation data of Research on partition area and destination layer, quantitative Research on partition district and destination layer preserve the good and bad degree in space, provide figure of merit and draw shale oil gas reservoir superior and inferior evaluating sectional view and orthographic plan. The present invention mainly around genetic potential, preserve ability, the aspect such as reservoir reconstruction condition and shale oil mobility, propose shale oil gas high-quality evaluation method, evaluating specifically can be summed up as: the organic geochemistry parameter characterizing oil-source condition, characterize the reservoir quality parameter of shale oil enrichment condition, characterizing the parameter of shale oil field conditions, the organic geochemical parameter wherein reacting oil generation condition is important indicator.
Accompanying drawing explanation
Fig. 1 is a kind of shale oil gas high-quality evaluating reservoir overall flow figure in the present invention;
Fig. 2 is a kind of shale oil gas high-quality reservoir evaluation parameter defining method schema in the present invention;
Fig. 3 is a kind of shale oil gas high-quality reservoir evaluation methods schema in the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As shown in Figure 1, in the present invention, the research thinking of shale oil gas high-quality evaluating reservoir mainly comprises:
I. determine research block, basin, it is determined that destination layer position: the block first being determined the research of task, the destination layer of explicit evaluation.
II. various data is collected, is arranged, and drill cores is observed, sampling, and earthquake data acquisition etc.: will collect all raw data and data, form the basis evaluated.
The content serial from following A, B, C tri-forms shale oil gas reservoir appraisal system:
A key issue:
A1 shale oil gas reservoir depositional texture genetic model: shale oil gas reservoir space type and formation, developmental mechanism, the growth of shale oil gas reservoir mainly contains five kinds of environment: lake, lake-marsh, lake, sea land interactive environment and coastal waters phase, and the growth of sedimentary environment is by the obvious control of syndepositional structure.
A2 high-quality preserves the special layering in space, reservoir space formation control factor: in various environment, structure activity, sedimentary environment, water medium environment, material source, biological development, water body divide band condition etc. all to have their own characteristics each, and result in the features such as the migration of the type of shale, vertical combination (thickness, the number of plies etc.), lateral distribution and Organic Matter Enrichment band different. High-quality oil shale formation is reservoir quality that part preferably in shale oil gas, and its growth is obviously also subject to the control of above-mentioned condition.
A3 shale oil gas high-quality preserves spatial key index preservation mode in geology evolutionary process: mainly from after diagenesis, structure activity, corrosion, hydrothermal activity, thermal evolution etc. are on the impact of the aspects such as organic matter ripening degree and abundance, lithologic character and the transformation of reservoir reservoir and flow space, rock mechanics character, the evolution of selective analysis high-quality reservoir and the condition of maintenance and rule.
B key index:
B1 mud shale heterogeneous deposited material type: the mineral composition of meticulous and quantitative analysis mud shale, porosity type, configuration. Different mineral compositions determines porosity type and the structure of shale.
B2 reservoir depositional texture and integrated mode: quartz is rigidity mineral, is beneficial to the preservation of vinterparticle pore; Feldspar is unstable mineral, easily forms Denudation pore along cleavage; Dissolution pore between the soluble formation grain of carbonate minerals or in grain, easily recrystallization forms intercrystal pore again; Clay mineral is often in curling sheet, and intercrystal pore is grown in a large number.
B3 mud shale petrofacies divide and sequence: under DIFFERENT DEPOSITIONAL ENVIRONMENTS and paleoclimate condition, type and the intensity in organic matter sources such as lower plant, higher plant, hydrobiont are different, in addition the biology that some reason causes breaks out event etc., cause abundance of organic matter in the mud shale formed in different environment to have height, organic matter type variant, and show certain regularity.
B4 shale oil gas reservoir space type and validity: the porosity and permeability of organic matter itself is higher than Rock Matrix, and can provide pore space and seepage channel. Along with the raising of evolution level, organic matter gradually raw hydrocarbon, row's hydrocarbon, organic matter hole increases gradually, therefore, the feature in the organic hole of weight analysis, filling, connection and hole validity.
B5 shale reservoir evolution feature and maintenance mechanism: different minerals composition also controls the fragility of shale, affects the effect of later stage reservoir reconstruction. The fragility mineral contents such as quartz, calcite are more high, more easily produce natural fracture, during later stage artificial fracturing, also easily form complicated induced fractures and cause the extension of network of fracture and be connected; And easy viscous deformation during clay mineral pressure break, water-swellable phenomenon easily there is, blocking seepage channel, it is unfavorable for later stage reservoir reconstruction.
B6 shale oil gas reservoir burial history and basin background: carry out the fundamental researchs such as the syndepositional structure of shale growth period, sedimentary environment are the fundamental research contents analyzing shale oil gas reservoir Forming Mechanism.
B7 shale oil gas high-quality evaluating reservoir: shale reservoir reconstruction condition need to consider reservoir buried depth and rock pressure break, and the pressure break of rock depends on its natural fracture development degree, rock forming mineral composition and the mechanical property of rock own.
C research method and experimental procedure:
C1 basin constructs, target mud shale contrast equilibrium profile;
C2 seismic facies, seismic strata, seismic data process, explanation, earthquake sedimentation analysis;
The little ripple of C3 log data, fractal, the meticulous parsing of depositional texture, many unit's stratum microtextures and structural plane divide;
C4 reservoir substance quantitative analysis, comprehensively classify;
C5 experiment test gordian technique, shale structural parameter, ripening degree, heterogeneous rock content, preserve space quantitatively, choice of parameters and demarcation;
C6 data processing, compilation, theoretical analysis.
III. set up shale oil gas high-quality reservoir and formed and evaluation method, key index and model.
IV. realize target:
(1) descriptive scheme and the model of reservoir formation of reservoir fine-grain structure are proposed to identify;
(2) theoretical model and mechanism for resolving that structure type is formed is preserved;
(3) index model of shale oil gas high-quality evaluating reservoir: research shale oil shale reservoir space type and validity, sets up the evaluation model of shale oil gas high-quality reservoir.
As shown in Figure 2, The present invention gives a kind of shale oil gas high-quality reservoir evaluation parameter defining method, it comprises the steps:
A collects, arranges the basic geology condition information that shale oil gas reservoir evaluates district;
B carries out the division of evaluating reservoir unit, comprises evaluation unit plane and divides and evaluation unit longitudinally division;
C determines reservoir net thickness according to drilling well data with containing TOC amount, determine reservoir thickness according to field geological profile or determines that the methods such as main reservoir thickness determine the thickness containing oil gas mud shale section according to seismic section;
D determines containing the distribution area of oil gas mud shale section and final condition parameter (can with reference to method existing in prior art);
E utilizes rigidity mineral probability distribution trend, numerical simulation to determine the density of mud shale, physical parameter and rock mechanics parameter (comprising reservoir density, porosity, rate of permeation, ultimate compression strength, Young's modulus, Poisson's ratio);
F determines shale oil gas reservoir index system, comprises actual measurement mineral type, rigidity mineral content, rigidity mineral spatial distribution and clay mineral type and ratio thereof;
G utilizes reservoir space volumetric method, reservoir space evaluation analogy method or reservoir space specific surface area mathematics to calculate method and sets up shale oil gas reservoir index model, comprises the three-dimensional grading evaluation index model of shale oil gas reservoir and shale oil gas reservoir evaluation mathematical model;
Wherein, the three-dimensional grading evaluation index model of shale oil gas reservoir refers to the nonuniformity for reservoir properties, and from the angle of three-dimensional space, point level evaluation reservoir physical parameter is at the variation characteristic of three-dimensional space, and then the index model set up;
Shale oil gas reservoir is evaluated mathematical model and is referred to that the derivation of utilization mathematics symbol and numeral formula is studied and represents the spatial variations feature of reservoir parameter, and then the index model set up;
H carries out shale oil gas reservoir evaluation space-time network confidence level and sentences knowledge:
Exploration practices in the index model of step g foundation and study area or test data of experiment are contrasted; If coincideing, degree is more than 80%, then sentence and know effect better, forward step I to; If coincideing, degree is lower than 80%, then sentence knowledge effect poor; Forward step g to;
I sets up shale oil gas high-quality reservoir evaluation parameter, mathematical model (can with reference to method existing in prior art).
On-the-spot and drill core store drilling well is sampled:
Collection drill cores entity sample as much as possible. Using standard sample device, sampling density is by 1 (or block)/0.5 1m. Obtain as far as possible many collection laboratory samples, carry out testing, testing; Utilize the various data of shale oil gas reservoir, carry out quantitative analysis. Emphasis Well Data Processing, sets up and identifies shale oil gas reservoir depositional texture, preserves space development degree recognition system.
Dissimilar well-log information is carried out standardization by emphasis, sets up correlationship matrix; New class will be merged into apart from infima species again, analogize successively, until the characteristic layer that difference is preserved space separates; On this basis, under the expert's conclusion of the section of coring instructs, what differentiate the section of not being in the mood for preserves lithology and petrofacies, fine series of strata sequence.
In addition, the present invention also around the evaluation of shale oil reservoir (mainly around genetic potential, preserve ability, the aspect such as reservoir reconstruction condition and shale oil mobility), it is proposed that shale oil gas high-quality reservoir evaluation methods.
As shown in Figure 3, the present invention also show in particular a kind of shale oil gas high-quality reservoir evaluation methods, and it comprises the steps:
The collection of the various data of a shale oil gas reservoir and parameter, comprises macrostructure interface and characteristic of division parameter acquisition, and microstructure data gathering;
B is by rock-mineral analysis and qualification, well logging information extracts and the meticulous identification of fine-grained sediment logging trace, the transformation of space later stage is followed the trail of and preserved to the rudimentary boundary surface of reservoir structure, developing obtains reservoir sedimentation type and sequence with maintenance combination, and reservoir structural plane by deposition and combination; Extracted and the meticulous identification of fine-grained sediment logging trace by well logging information, the rudimentary boundary surface of reservoir structure is followed the trail of, spatial classification is comprehensively classified, names and preserved to rock association, evaluation combination obtains reservoir deposition Macrocosm and microcosm index and crosses, reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy;
C crosses according to reservoir sedimentation type and sequence, reservoir structural plane by deposition and combination, and reservoir deposition Macrocosm and microcosm index and obtains reservoir depositional texture space, model, screen work and relevant parameter; According to reservoir structural plane by deposition and combination, reservoir deposition Macrocosm and microcosm index crosses, and reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy obtains high-quality and preserves in the geology evolutionary process of space variation and keep parameter;
D preserves variation and maintenance parameter in the geology evolutionary process of space according to reservoir depositional texture space, model, screen work and relevant parameter and high-quality and determines high-quality reservoir parameter;
E utilizes above-mentioned high-quality reservoir parameter to carry out reservoir structure and portrays, and the spatial parameter that preserves that Binding experiment test obtains is set up reservoir and deposited fine Cause Structure model, high-quality evaluating reservoir index model;
Wherein, the process of establishing that reservoir deposits fine Cause Structure model is specially: first reservoir to be carried out meticulous sedimentary micro-environment analysis, the conditions such as water medium, organic matter source, water body layering, detrital material injection, sedimentary dynamics that comprise are analyzed, next is that reservoir is carried out meticulous depiction, comprise the features such as recognition and description fine bedding wherein, rock ore deposit composition and content, organic matter type, abundance, distribution, and then the corresponding relation set up between sedimentary micro-environment and the fine genetic feature of reservoir.
1) petrology mature characteristic and correlation parameter
Hide, based on the one-tenth of shale oil " being certainly conigenous storage ", the exploit condition that feature and reservoir thereof need fracturing reform, the evaluation of shale oil reservoir mainly around genetic potential, preserve ability, the aspect such as reservoir reconstruction condition and shale oil mobility. Evaluating specifically can be summed up as: organic geochemistry parameter (Kerogen type, the ripening degree characterizing oil-source condition, abundance of organic matter, rock pyrolysis parameter etc.), characterize reservoir quality parameter (rich organic shale area, the thickness of shale oil enrichment condition, parameter is oozed in hole, oil-abundance etc.), characterize the parameter (buried depth of shale oil field conditions, rock forming mineral forms, fracture development, rock mechanics parameter, Crude viscosity, reservoir pressure etc.), the organic geochemical parameter wherein reacting oil generation condition is important indicator.
2) space alteration of shale oil gas reservoir and preservation
Reservoir properties is impacted by buried depth on the one hand, and along with the degree of depth increases, compacting effort strengthens, reservoir porosity and permeability reduction; Buried depth increase causes boring the cost of development such as completion on the other hand increases, and reduces the economic worth of reservoir. In shale, the existence of natural fracture reduces the tensile strength of rock, it is possible to strengthen fracturing effect, and natural fracture is more grown, and more easily forms induced fractures when implementing artificial fracturing and is interconnected. The stage of organic matter type and thermal evolution thereof has transformed generation and the enrichment of shale oil.
3) shale oil gas is containing the seismic strata data sampling and processing of organic matter fine-grained sediment sequence at different levels, basin structure and analysis and gordian technique
Utilize the seismic data in basin, primary study district to carry out seismic stratigraphy analysis, use seismic strata and Seismic Sedimentology to analyze technology, divide seismic facies, therefrom identify mud shale petrofacies. The comprehensive analysis of a large amount of seismic surveys data and data, in Seismic Sedimentology, the information of pelyte depositional texture is extracted, high-resolution seismic exploration stratigraphy, Seismic Sedimentology etc. analyze technology, select crucial parent sequence section, realize being carried out by each section shale oil gas reservoir identification based on the method for model inversion and wave resistance inverting. Realize the control of shale oil gas reservoir spatial distribution, it is the present invention one of basis and gordian technique the most.
Seismic attributes analysis wave mechanics gordian technique: AVO technology, complex seismic trace technology (instantaneous amplitude, instantaneous frequency, instantaneous phase), seismic inversion bound by well data etc. Wave resistance inverting geophysical parameters inverting technology: reflection strength (instantaneous amplitude), instantaneous phase, instantaneous frequency and polarity check technology etc. Result and reservoir based on model inversion and neural network inverting have good corresponding relation, seismic wave speed and its country rock particularly rock stratum upper and lower with it define obvious difference of impedance, this be prediction shale reservoir of oil and gas distribution more effective method.
4) macroscopic observation description and lab analysis are combined closely, and carry out shale oil gas reservoir petrology quantitative analysis and evaluation
Using microcosmic petrological study method, advanced experiment test technology, carry out shale oil gas reservoir petrology explication de texte, qualification and division reservoir rock type, field and rock core macroscopic view lithology are observed and laboratory rock quantitative analysis contrast. Carry out setting up shale oil gas reservoir rock comprehensively to classify, establish quantification basis for setting up shale oil gas high-quality evaluating reservoir system. Conventional reservoir properties analytical test means, as the poor effect in shale reservoir is tested such as mensuration, pressure mercury is oozed in casting body flake, hole. Therefore in shale reservoir characterization technique, special imaging technique and analysis test method must be adopted, as utilized argon ion polishing sample making apparatus, the high resolving power scopes such as three-dimensional micro-nano imaging X-ray CT, field emission scanning electron microscope, environmental scanning electronic microscope, Momentum profiles is analyzed, it is achieved shale internal void and the reconstruct of mineralogical composition distributed in three dimensions image utilize low pressure N2With low pressure CO2Specific area measuring effectively reflects the information of the pore texture of shale, distribution and microfracture.
Certainly; the better embodiment being only the present invention is more than described; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification sheets; all equivalent replacement, the obviously variant made, all drops within the essential scope of this specification sheets, ought to be subject to the protection of the present invention.
Claims (9)
1. a shale oil gas high-quality reservoir evaluation parameter defining method, it is characterised in that, comprise the steps:
A collects, arranges the basic geology condition information that shale oil gas reservoir evaluates district;
B carries out the division of evaluating reservoir unit;
C determines the thickness containing oil gas mud shale section;
D determines the distribution area containing oil gas mud shale section and final condition parameter;
E determines the density of mud shale, physical parameter and rock mechanics parameter;
F determines shale oil gas reservoir index system;
G sets up shale oil gas reservoir index model, and this index model comprises the three-dimensional grading evaluation index model of shale oil gas reservoir and shale oil gas reservoir evaluates mathematical model;
H carries out shale oil gas reservoir evaluation space-time network confidence level and sentences knowledge: knows effect better if sentencing, then forwards step I to; If it is poor to sentence knowledge effect, then forward step g to;
I sets up shale oil gas high-quality reservoir evaluation parameter, mathematical model.
2. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterised in that, described step b specifically comprises evaluation unit plane and divides and evaluation unit longitudinally division.
3. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterized in that, described step c comprises containing the thickness defining method of oil gas mud shale section and determines reservoir net thickness according to drilling well data with containing TOC amount, determine reservoir thickness according to field geological profile or determine main reservoir thickness according to seismic section.
4. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterised in that, utilize the mud shale density in rigidity mineral probability distribution trend, numerical simulation determining step e, physical parameter and rock mechanics parameter.
5. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterized in that, in described step f, shale oil gas reservoir index system comprises actual measurement mineral type, rigidity mineral content, rigidity mineral spatial distribution and clay mineral type and ratio thereof.
6. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterized in that, the method setting up shale oil gas reservoir index model in described step g comprises reservoir space volumetric method, reservoir space evaluates analogy method or reservoir space specific surface area mathematics calculates method.
7. a kind of shale oil gas high-quality reservoir evaluation parameter defining method according to claim 1, it is characterised in that, described step h is specially: the exploration practices in the index model of step g foundation and study area or test data of experiment are contrasted; If degree of matching is more than 80%, then better for sentencing knowledge effect; If coincide, degree is lower than 80%, then poor for sentencing knowledge effect.
8. a shale oil gas high-quality reservoir evaluation methods, it is characterised in that, comprise the steps:
The collection of the various data of a shale oil gas reservoir and parameter, comprises macrostructure interface and characteristic of division parameter acquisition, and microstructure data gathering;
B is by rock-mineral analysis and qualification, well logging information extracts and the meticulous identification of fine-grained sediment logging trace, the transformation of space later stage is followed the trail of and preserved to the rudimentary boundary surface of reservoir structure, developing obtains reservoir sedimentation type and sequence with maintenance combination, and reservoir structural plane by deposition and combination; Extracted and the meticulous identification of fine-grained sediment logging trace by well logging information, the rudimentary boundary surface of reservoir structure is followed the trail of, spatial classification is comprehensively classified, names and preserved to rock association, evaluation combination obtains reservoir deposition Macrocosm and microcosm index and crosses, reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy;
C crosses according to reservoir sedimentation type and sequence, reservoir structural plane by deposition and combination, and reservoir deposition Macrocosm and microcosm index and obtains reservoir depositional texture space, model, screen work and relevant parameter; According to reservoir structural plane by deposition and combination, reservoir deposition Macrocosm and microcosm index crosses, and reservoir deposition and internal structure, texture parameter cross, and the vertical combination of reservoir sedimentary proxy obtains high-quality and preserves in the geology evolutionary process of space variation and keep parameter;
D preserves variation and maintenance parameter in the geology evolutionary process of space according to reservoir depositional texture space, model, screen work and relevant parameter and high-quality and determines high-quality reservoir parameter;
E utilizes above-mentioned high-quality reservoir parameter to carry out reservoir structure and portrays, and the spatial parameter that preserves that Binding experiment test obtains is set up reservoir and deposited fine Cause Structure model.
9. a kind of shale oil gas high-quality reservoir evaluation methods according to claim 8, it is characterized in that, the process of establishing that in described step e, reservoir deposits fine Cause Structure model is specially: first reservoir carries out meticulous sedimentary micro-environment analysis, secondly reservoir is carried out meticulous depiction, and then the corresponding relation set up between sedimentary micro-environment and the fine genetic feature of reservoir.
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| CN (1) | CN105651966A (en) |
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| CN109388827A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | The non-homogeneous Geological Modeling of small scale and system of shale oil and gas reservoir |
| CN109709301A (en) * | 2018-11-30 | 2019-05-03 | 中国石油天然气股份有限公司 | Method, device and system for determining distribution of fracture pore type tight sandstone reservoir |
| CN109916754A (en) * | 2019-02-26 | 2019-06-21 | 成都理工大学 | A kind of reservoir brittleness evaluation method based on landwaste microscopic feature and drilling parameter |
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| CN110297280A (en) * | 2018-03-23 | 2019-10-01 | 中国石油化工股份有限公司 | A kind of prediction technique of carbonate rock superpressure spatial distribution characteristic |
| CN110424958A (en) * | 2019-08-06 | 2019-11-08 | 中国石油天然气股份有限公司大港油田分公司 | The Exploration Potential plane partition method and device of lacustrine shale oil |
| CN110685676A (en) * | 2018-06-19 | 2020-01-14 | 中国石油化工股份有限公司 | Method for quantitatively identifying high-quality shale sections |
| CN111007233A (en) * | 2019-12-25 | 2020-04-14 | 西南石油大学 | Method for analyzing movement behavior of methane-carbon dioxide in micro pores of shale |
| CN111311119A (en) * | 2020-03-18 | 2020-06-19 | 西南石油大学 | Geological evaluation method for seam network transformation capability of marine shale gas reservoir |
| CN111475685A (en) * | 2019-12-27 | 2020-07-31 | 北京国双科技有限公司 | Oil gas exploration method and device, storage medium and electronic equipment |
| CN111638317A (en) * | 2020-05-30 | 2020-09-08 | 中国石油天然气股份有限公司 | Large-scale fresh water lake basin continental facies mud shale oil formation and evolution evaluation method |
| CN111798077A (en) * | 2019-04-09 | 2020-10-20 | 中国石油化工股份有限公司 | Shale gas lithofacies quality evaluation method |
| CN111983714A (en) * | 2019-05-24 | 2020-11-24 | 中国石油天然气股份有限公司 | Method and system for measuring field stratum based on sedimentary structure profile |
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| CN112282742A (en) * | 2020-10-22 | 2021-01-29 | 中国石油大学(华东) | Prediction method of shale oil high-quality reservoir |
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| CN112965114A (en) * | 2021-02-07 | 2021-06-15 | 中国石油大学(华东) | Method for evaluating desserts of offshore deep natural gas reservoir |
| CN113033114A (en) * | 2021-03-04 | 2021-06-25 | 中国石油大学(北京) | Optimization method for mineral kinetic parameters in reservoir water rock reaction simulation |
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| CN114859009A (en) * | 2022-03-22 | 2022-08-05 | 中国石油大学(北京) | Shale lithofacies division method and device based on rock macro-micro characteristics |
| CN116066049A (en) * | 2021-11-26 | 2023-05-05 | 中国石油天然气集团有限公司 | Shale gas well fracturing crack area calculation method based on liquid phase ion characterization |
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| CN116296946A (en) * | 2023-03-06 | 2023-06-23 | 中国矿业大学(北京) | Shale stratum development degree characterization method and device based on fractal-fluctuation theory |
| CN116307871A (en) * | 2023-03-06 | 2023-06-23 | 中国地质调查局油气资源调查中心 | Method for evaluating shale microcosmic reservoir space effectiveness |
| CN116773771A (en) * | 2023-05-29 | 2023-09-19 | 中国地质调查局油气资源调查中心 | Shale oil evaluation key parameter calculation standard determination method and device and electronic equipment |
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Application publication date: 20160608 |