CN105372702A - Quantitative description method for torsional/tensional geological structure - Google Patents
Quantitative description method for torsional/tensional geological structure Download PDFInfo
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Abstract
The invention provides a quantitative description method for a torsional/tensional geological structure. The quantitative description method for the torsional/tensional geological structure comprises the steps of a step 1, analyzing according to fault geometric features, forming an analog according to a tectonic stress field and a fault, determining the type of a basin torsional/tensional structure; a step 2, establishing a basin and fault forming mechanism and a static model; a step 3, performing dynamic quantitative analysis, obtaining the development characteristic of the basin torsional/tensional structure, performing quantitative calculation for obtaining the vertical displacement and horizontal displacement of a torsional/tensional fault in each key period, and meeting a quantization standard; and a step 4, establishing a dynamic geological structure for torsional/tensional fault of the basin, and defining control function for a basin sedimentary reservoir and oil-and-gas migration and entrapment. The quantitative description method for the torsional/tensional geological structure has functions of defining control function of the torsion/tension structure to deposition, reservoiring and entrapment, settling a problem of low well drilling success rate in torsional/tensional basins, and realizing profound measuring for oil-gas exploration on similar basins.
Description
Technical field
The present invention relates to In Oil Field Exploration And Development technical field, particularly relate to a kind of quantitative description method turning round a geologic structure.
Background technology
Turn round the dynamic and static quantitative analysis of a geologic structure, based on transtensional basin, segmentation property is strong, and sedimentation complexity, many things source, many sedimentary systems interlock; Oil-rich subsag understanding is unclear, and particularly the similar transtensional basin of Jiyang depression is as Huimin sag etc., and exploration is in reduced levels all relatively, and transtensional basin drilling success is low.The research of this transtensional basin is very limited at home and abroad on the other hand.We have invented a kind of quantitative description method turning round a geologic structure newly for this reason, solve above technical matters.
Summary of the invention
The object of this invention is to provide development characteristics and the evolutionary process thereof of a kind of clear and definite basin major faults, reached quantitative criteria, set up the quantitative description method turning round a geologic structure turning round the dynamic and static tectonic model in a type basin.
Object of the present invention realizes by following technical measures: the quantitative description method turning round a geologic structure, this quantitative description method turning round a geologic structure comprises: step 1, according to Fault geometry signature analysis, combined structure stress field and fault development simulation, determine that a tectonic style is turned round in basin; Step 2, according to the analysis in step 1, on the basis analyzed tectonic style and the assemblage characteristic of 1 ~ 4 grade of tomography in basin, sets up basin and breaks to form mechanism and static model; Step 3, carries out dynamic quantization analysis to turning round a kinematics character for structure, obtains development characteristics and evolutionary process thereof that tension fault structure is turned round in basin, quantitatively calculates perpendicular displacement and horizontal shift that each critical period turns round tension fault, and reach quantitative criteria; And step 4, according in step 3, the vertical of each critical period and horizontal shift quantification are calculated, set up the dynamic geological model that tensile crack is turned round in basin, clearly to the control action of basin fill reservoir and Hydrocarbon Migration And Accumulation.
Object of the present invention also realizes by following technical measures:
In step 1, the Fault geometry signature analysis carried out comprises: fault strike statistics in each reflection horizon is worked out with rose, classification of rupturing, tomography is inclined to, fracture direction is added up, plane-profile construction Pattern analysis, the complicacy that ruptures are added up, sole fault analysis and become to scheme.
In step 3, for tomography, structural belt involved by the static model of basin, emphasis quantitatively develops to basin, structural belt quantitatively develops and tomography quantitatively develops, and this several method carries out dynamic quantization analysis.
In step 3, when carrying out dynamic quantization and analyzing, the fault strike obtained according to the ancient drop of each layer, section, the corresponding tomography of Sand member, fault strike, section apparent dip and digital simulation and the complementary angle of tension orientation angle: complete each layer, section, Sand member horizontal displacement, span.
In step 3, by balanced cross section analysis, fault activity analysis, carry out dynamic analysis to turning round a kinematics character for structure, and carry out the numerical simulation of mature fault and Evolution aspect in depression.
In step 3, the numerical simulation of carrying out is included in mature fault and evolution and tomography stress field three aspects in mature fault and evolution on section, plane and carries out numerical simulation analysis.
The quantitative description method turning round a geologic structure in the present invention, emphasis is to counterincision activity rate variation relation in time, ancient drop, labor research work is carried out in balanced cross section analytical work across depression heavy gauge, and carry out the numerical simulation of mature fault and Evolution aspect in depression, mainly be included in mature fault and evolution on section, in plane, mature fault has carried out numerical simulation analysis with evolution and tomography stress field three aspects, finally complete and turn round the dynamic of a geologic structure, STATIC QUANTITATIVE fractional analysis, set up dynamically, quantitative model, clearly turn round a structure to deposition, reservoir, the control action becoming to hide.The present invention passes through the analysis to turning round the aspect such as a flat cutting surface construction pattern for structure, fracture temporal-spatial evolution characteristics, the evolved stages rule of transtensional basin can be specified, setting up the dynamic and static tectonic model that this turns round a type basin, to instructing the oil-gas exploration in similar basin, there is profound significance.By analyzing the data such as relevant geology, geophysics, on the basis turning round a profile features constructed and plane characteristic that clear and definite transtensional basin is basic, analyze the variation characteristic of tectonic style on room and time, sum up and turn round an evolution Feature for structure, and analyze the kinetic mechanism turning round a formation of structure.Final basis carries out momentum quantitative test to turning round a kinematics character for structure, specify that development characteristics and the evolutionary process thereof of basin major faults, reaches quantitative criteria, clearly to the control action that deposition, reservoir, one-tenth are hidden.It is low that the method solves transtensional basin drilling success, has profound significance to instructing the oil-gas exploration in similar basin.
Accompanying drawing explanation
Fig. 1 is the process flow diagram turning round a specific embodiment of the quantitative description method of a geologic structure of the present invention;
Fig. 2 turns round a quantitative calculating schematic diagram for structure;
Fig. 3-1, Fig. 3-2 of the present inventionly turns round a structure dynamics Three-dimensional Evolution model for Organic geochemistry.
Embodiment
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiments, and coordinate institute's accompanying drawings, be described in detail below.
As shown in Figure 1, Fig. 1 is the process flow diagram turning round the quantitative description method of a geologic structure of the present invention.
In step 101, according to Fault geometry signature analysis, combined structure stress field and fault development simulation, determine that a tectonic style is turned round in basin.In one embodiment, static research work fracture analysis is carried out for Huimin sag structure: fault strike statistics in each reflection horizon is worked out with rose.Fracture classification, tomography tendency, fracture direction statistics, plane-profile construction Pattern analysis, fracture complicacy statistics, sole fault analysis and one-tenth figure.Flow process enters into step 102.
In step 102, by comprehensive analysis, on the basis that tectonic style and the assemblage characteristic of 1 ~ 4 grade of tomography in basin are analyzed, set up basin and break to form mechanism and static model.Specify transtensional basin and break to form mechanism, and setting up static model.Flow process enters into step 103.
In step 103, by balanced cross section, fault activity analysis and tectonic stress field stimulation, dynamic quantization analysis is carried out to turning round a kinematics character for structure, obtain development characteristics and evolutionary process thereof that tension fault structure is turned round in basin, as shown in Figure 2, quantitatively calculate perpendicular displacement and horizontal shift that each critical period turns round tension fault, and reach quantitative criteria.For tomography, structural belt involved by the static model of basin, quantitatively develop mainly through basin, structural belt quantitatively develop and tomography quantitatively develop in several method carry out the dynamic quantization analysis shown in Fig. 2, the fault strike obtained according to the ancient drop of each layer, section, the corresponding tomography of Sand member, fault strike, section apparent dip and digital simulation and the complementary angle of tension orientation angle: complete each layer, section, Sand member horizontal displacement, span etc.By balanced cross section analysis, fault activity analysis, dynamic quantization analysis is carried out to turning round a kinematics character for structure, and carry out the numerical simulation of mature fault and Evolution aspect in depression, mainly being included in mature fault and evolution on section, plane mature fault with developing has carried out numerical simulation analysis with tomography stress field three aspects, specify that development characteristics and the evolutionary process thereof of basin major faults, reach quantification standard.Flow process enters into step 104.
In step 104, structure fracture is turned round to 1 ~ 4 grade, basin and carries out the vertical of each critical period and horizontal shift quantification calculates, set up the dynamic geological model that tensile crack is turned round in basin, clearly to the control action of basin fill reservoir and Hydrocarbon Migration And Accumulation.Particularly, according to step 103 pair transtensional basin Quantitative study, the research work of comprehensive in detail analysis each side, finally complete the dynamic and static quantitative analysis turning round a geologic structure, set up dynamic, quantitative model as shown in Figure 3, clearly turn round the control action that a structure is hidden deposition, reservoir, one-tenth.Flow process terminates.
In a word, the dynamic and static Quantitative Analysis Method turning round a geologic structure in the present invention mainly turns round the analysis of the aspect such as a flat cutting surface construction pattern for structure, fracture temporal-spatial evolution characteristics for transtensional basin, specify the evolved stages rule of transtensional basin, final basis carries out momentum quantitative test to turning round a kinematics character for structure, specify that development characteristics and the evolutionary process thereof of basin major faults, reach quantitative criteria, set up the dynamic and static tectonic model turning round a type basin, clearly to the control action that deposition, reservoir, one-tenth are hidden.The unique novelty of the research achievement, can fill up and study blank both at home and abroad.
Claims (6)
1. turn round the quantitative description method of a geologic structure, it is characterized in that, this quantitative description method turning round a geologic structure comprises:
Step 1, according to Fault geometry signature analysis, combined structure stress field and fault development simulation, determine that a tectonic style is turned round in basin;
Step 2, according to the analysis in step 1, on the basis analyzed tectonic style and the assemblage characteristic of 1 ~ 4 grade of tomography in basin, sets up basin and breaks to form mechanism and static model;
Step 3, carries out dynamic quantization analysis to turning round a kinematics character for structure, obtains development characteristics and evolutionary process thereof that tension fault structure is turned round in basin, quantitatively calculates perpendicular displacement and horizontal shift that each critical period turns round tension fault, and reach quantitative criteria; And
Step 4, calculates the vertical of each critical period and horizontal shift quantification according in step 3, sets up the dynamic geological model that tensile crack is turned round in basin, clearly to the control action of basin fill reservoir and Hydrocarbon Migration And Accumulation.
2. the quantitative description method turning round a geologic structure according to claim 1, it is characterized in that, in step 1, the Fault geometry signature analysis carried out comprises: fault strike statistics in each reflection horizon is worked out with rose, classification of rupturing, tomography is inclined to, fracture direction is added up, plane-profile construction Pattern analysis, the complicacy that ruptures are added up, sole fault analysis and become to scheme.
3. the quantitative description method turning round a geologic structure according to claim 1, it is characterized in that, in step 3, for tomography, structural belt involved by the static model of basin, emphasis quantitatively develops to basin, structural belt quantitatively develops and tomography quantitatively develops, and this several method carries out dynamic quantization analysis.
4. the quantitative description method turning round a geologic structure according to claim 3, it is characterized in that, in step 3, when carrying out dynamic quantization and analyzing, the fault strike obtained according to the ancient drop of each layer, section, the corresponding tomography of Sand member, fault strike, section apparent dip and digital simulation and the complementary angle of tension orientation angle: complete each layer, section, Sand member horizontal displacement, span.
5. the quantitative description method turning round a geologic structure according to claim 1, it is characterized in that, in step 3, by balanced cross section analysis, fault activity analysis, carry out dynamic analysis to turning round a kinematics character for structure, and carry out the numerical simulation of mature fault and Evolution aspect in depression.
6. the quantitative description method turning round a geologic structure according to claim 5, it is characterized in that, in step 3, the numerical simulation of carrying out is included in mature fault and evolution and tomography stress field three aspects in mature fault and evolution on section, plane and carries out numerical simulation analysis.
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Cited By (7)
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| CN105911589A (en) * | 2016-06-27 | 2016-08-31 | 中国石油大学(华东) | Quantifying method for confirming fault sliding parameter in three-dimensional space by adopting seismic data |
| CN106199709A (en) * | 2016-06-29 | 2016-12-07 | 中国石油化工股份有限公司 | Turn round the evaluation methodology of tensile crack activeness |
| CN106324701A (en) * | 2016-10-10 | 2017-01-11 | 中国海洋石油总公司 | Petroliferous basin analysis method based on fracture-uplift linkage |
| CN106556869A (en) * | 2017-01-19 | 2017-04-05 | 中国石油大学(华东) | Method that tomography walk sliding displacement is portrayed under a kind of extention environment quantitatively |
| CN107389555A (en) * | 2017-07-21 | 2017-11-24 | 中水北方勘测设计研究有限责任公司 | A kind of method for analyzing drilling rock mass master joint development direction |
| CN107844614A (en) * | 2016-09-19 | 2018-03-27 | 中国石油天然气股份有限公司 | Method and device for predicting potential mechanical activity of fault |
| CN109979005A (en) * | 2019-03-20 | 2019-07-05 | 华北理工大学 | A kind of PHYSICAL MODELING OF IN method and apparatus of the garden basin brush structure origin cause of formation |
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| CN107589236B (en) * | 2017-09-14 | 2020-05-19 | 中国地质调查局油气资源调查中心 | Shale gas multi-factor area selection evaluation method based on fuzzy matrix |
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| CN106556869A (en) * | 2017-01-19 | 2017-04-05 | 中国石油大学(华东) | Method that tomography walk sliding displacement is portrayed under a kind of extention environment quantitatively |
| CN107389555A (en) * | 2017-07-21 | 2017-11-24 | 中水北方勘测设计研究有限责任公司 | A kind of method for analyzing drilling rock mass master joint development direction |
| CN109979005A (en) * | 2019-03-20 | 2019-07-05 | 华北理工大学 | A kind of PHYSICAL MODELING OF IN method and apparatus of the garden basin brush structure origin cause of formation |
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