CN107153215A - A kind of depositional model construction method under the constraint based on arid climate - Google Patents
A kind of depositional model construction method under the constraint based on arid climate Download PDFInfo
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- CN107153215A CN107153215A CN201710255338.5A CN201710255338A CN107153215A CN 107153215 A CN107153215 A CN 107153215A CN 201710255338 A CN201710255338 A CN 201710255338A CN 107153215 A CN107153215 A CN 107153215A
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- 238000010276 construction Methods 0.000 title claims abstract description 8
- 208000035126 Facies Diseases 0.000 claims abstract description 29
- 230000008021 deposition Effects 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 229910052729 chemical element Inorganic materials 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000000151 deposition Methods 0.000 description 12
- 238000005553 drilling Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- G01V1/01—Measuring or predicting earthquakes
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
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Abstract
The present invention relates to the depositional model construction method under a kind of ancient arid climate constraint of continental basins, the situation for a variety of type of sedimentary facies symbiosis being especially adapted for use under terrestrial lake basin arid climate change.The present invention is directed in terrestrial lake basin to environmental condition there is also relative humidity and relatively arid under arid climate change, carry out with the depositional model construction method under geologic climate constraints, so as to the correlation theory supplemented with sedimentary basin mesoclimate and sedimentary facies, while also providing favourable guidance to terrestrial lake basin deposit filling pattern and favorab1e sandbadies prediction.The technical method of use comprises the following steps：Step 1：It is determined that deposition top, bottom interface when waiting under being constrained with geologic climate；Step 2：Ancient arid climate fluctuation is refined using geochemical data；Step 3：Using lithology combination as bridge, the relation of geologic climate and sedimentary facies is set up；Step 4：The depositional model set up under geologic climate constraint.
Description
Technical field
The present invention relates to the research of sedimentary basin mesoclimate and sedimentary facies correlation theory.It is specifically a kind of using a variety of
Technological means realizes the method that the depositional model under geologic climate constraint is accurately built.
Background technology
The structure of depositional model is the important research work in sedimentology research, and it is to setting up the filling of sedimentary basin
Pattern, the sedimentary evolution history in recovery basin have important directive significance.It is by Sedimentary Rock that traditional depositional model, which is set up,
What feature, geochemical element changed analyzes to realize.In recent years, the sequence stratigraphy study method of fast development is deposited to setting up
Pattern has good directive function, and it builds complete marine deposit pattern using the change on sea level, the change of weather.Phase
It is more shadow of the change to Sedimentary Rock type, sedimentary facies and its depositional model for emphasizing lake level for continental basins
Ring, and ignore geologic climate fluctuation under the influence of depositional model and its Distribution Pattern change.
The Sedimentary Facies formed under correspondence nature extreme climate, typical example is evaporite rock, and its origin cause of formation has multiple
Hypothesis, such as have to the Genetic Explanation of continent evaporite rock continent say (or desert is said), it is eolian say etc., but this controlled with geologic climate
Certainly exist other sedimentary facies under conditions of system, other sedimentary facies and typical evaporite facies be how symbiosis and in space
Distribution Pattern is not yet given and clearly explained, and there is also two kinds of situations of change of flood period and drought period under arid climate.Tradition
The foundation of depositional model often focus on rock association type and its know each other in other discussion, ignore the deposition under climate change
The distribution characteristics of phase and its Fill models in basin.
Forefathers' research confirms that Rb/Sr and Cr, P element and carbonate, sulfate etc. can reflect deposition weather well.Cause
This, can be set up on the basis of conventional deposition is mutually studied it is a kind of constrained by geologic climate under depositional model method.This side
Method overcomes the stratigraphic(al) research defect of conventional deposition pattern, series of strata, it is adaptable to a variety of depositions under terrestrial lake basin climate change
The situation of facies type symbiosis, favourable guidance is provided to terrestrial lake basin deposit filling pattern and favorab1e sandbadies prediction.
The content of the invention
The present invention is to provide the depositional model construction method under a kind of continental basins geologic climate constraint.The present invention is by following
Mode realizes its purpose：
(1) unconformable Special Earthquakes reflectance signature is based on, the side being combined with seismic data is demarcated by drilling data
Method determines the top of research layer position, bottom interface.Using the dominant genera kind of Ephedripite under arid climate set up cryptogam with it is palaeoclimatic
Response relation, determines the deposition interface developed under regional drought weather.Using determined by seismic data stratum push up bottom interface as
Trend surface, specify regional drought weather it is inferior when deposition interface distributing edge.
(2) the deposition lithology combination section of standard is directed to, by rock core information and landwaste data to different depth and difference
The lithology combination of tectonic position carries out mineral and analysis of chemical elements, sets up by the longitudinal axis of temporal evolution, can reflect that geologic climate becomes
The mineral and element variation of change are the change curve of transverse axis, so that it is determined that going out relatively dry and relative humidity under regional drought weather
Evolutionary History, conclude lithology combination type and paleo-climate change (i.e. relatively dry and relative humidity) for relation.
(3) using data under rock core information and mirror, the sedimentary facies belonging to different lithology combination is specified, is built by well-log information
Vertical corresponding rock electrograph version, so as to mark off whole district's type of sedimentary facies and its Distribution Pattern；
(4) using sedementary basin position as framework, determine that the lithology combination developed at different configuration position and its institute are anti-
The type of sedimentary facies reflected, so that type of sedimentary facies and its sedimentary distribution pattern under clearly being controlled with geologic climate, are built region and done
The sedimentary facies model that Climate Fluctuations are developed under non-irrigated environment.
Brief description of the drawings
Fig. 1 is a kind of to constrain the lower operational flowchart for building depositional model based on arid climate
Series of strata interface under the regional drought environment that Fig. 2 cryptogam data are controlled；
Response relation between Fig. 3 A depression geochemical indexs and lithology combination；
Depositional model figure under Fig. 4 A depression arid climate fluctuations.
Embodiment
Implementation steps are as shown in figure 1, following carry out detailed step introduction：
Step one：It is determined that deposition top, bottom interface when waiting under being constrained with geologic climate
Top, the bottom interface that research layer position is determined with the combining method of seismic data are demarcated by drilling data.Using dry
The dominant genera kind of Ephedripite sets up cryptogam and palaeoclimatic response relation under non-irrigated weather, determines what is developed under regional drought weather
Deposition interface.Regional drought weather, as trend surface, is specified with stratum top, bottom interface determined by seismic data using drilling data
The distributing edge of deposition interface when inferior.
Step 2：Ancient arid climate fluctuation is refined using geochemical data
For the deposition lithology combination section of standard, by rock core information and landwaste data to different depth and different configuration
The lithology combination at position carries out mineral and analysis of chemical elements, sets up by the longitudinal axis of temporal evolution, can reflect paleo-climate change
Mineral and element variation are the change curve of transverse axis, so that it is determined that going out drilling for relatively dry and relative humidity under regional drought weather
Change history, conclude lithology combination type and paleo-climate change
(i.e. relatively dry and relative humidity) for relation.
Step 3：Using lithology combination as bridge, the relation of geologic climate and sedimentary facies is set up
Using the sedimentary facies belonging to the clear and definite different lithology combination of data under rock core information and mirror, phase is set up by well-log information
The rock electrograph version answered, so as to mark off whole district's type of sedimentary facies and its Distribution Pattern.Using lithology combination as bridge, it is determined that arid gas
With respect to the type of sedimentary facies in the case of Climate Fluctuations (relatively dry and relative humidity) in time.
Step 4：The depositional model set up under geologic climate constraint
Construction location is framework using in sedimentary basin, determines the lithology combination developed at different configuration position and its is reflected
Type of sedimentary facies, summarize arid climate in respect to the type of sedimentary facies under Climate Fluctuations the regularity of distribution.So as to set up with dry
Distribution of Sedimentary Facies pattern under non-irrigated Climate Fluctuations control,
Embodiment：
Research object is the A depression a set of terrestrial lake basin X group sedimentary type formations of Paleogene System, and forefathers are according to the one of sedimentary basin gentle slope
General red sand mud stone is covered, its Depression Centers is huge thick gypsum-salt bed system.Determine that research series of strata are a set of regional drought using palynological data
Sedimentary formation (Fig. 2) under weather.By bed boundary determined by seismic data be trend surface, determine cryptogam control under etc.
When series of strata interface and its distribution.Using palaeoclimatic situation of change inside geochemical data refinement series of strata (i.e. relatively dry and
Relative humidity) (Fig. 3).Using lithology combination type as bridge, contacting between geologic climate and sedimentary facies is set up, and then summarize dry
The type of sedimentary facies developed under non-irrigated Climate Fluctuations with respect to the flood period and relatively arid dry season of moistening and its in basin
Spread pattern (Fig. 4), complete arid climate constraint under depositional model construction method.
Claims (1)
1. the depositional model construction method under a kind of ancient arid climate constraint of continental basins, its feature comprises the following steps：
Step 1：It is determined that deposition top, bottom interface when waiting under being constrained with geologic climate, main to utilize Ephedripite under arid climate
Dominant genera kind sets up cryptogam and palaeoclimatic response relation, so that it is determined that when regional drought weather is inferior deposition interface distribution side
Boundary；
Step 2：Ancient arid climate fluctuation is refined using geochemical data, it is (including quartz, long using mineral and chemical element
Stone, carbonate, sulfate, Rb/Sr, Cr/ (ug/g)) environment of relatively dry and relative humidity will be refined out in drought environment,
And determine its corresponding lithology combination；
Step 3：The relation of geologic climate and sedimentary facies is set up by bridge of lithology combination, using under rock core, mirror and well-log information is true
The type of sedimentary facies of different lithology combination is determined, so as to set up the relation of geologic climate and sedimentary facies；
Step 4：The depositional model set up under geologic climate constraint, by the way that different sedimentary facies are returned into sedementary basin position,
Terrestrial lake basin sedimentary facies model is set up by condition of identical geologic climate.
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| CN201710255338.5A CN107153215B (en) | 2017-04-19 | 2017-04-19 | Deposition mode construction method based on drought and climate constraints |
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| CN201710255338.5A CN107153215B (en) | 2017-04-19 | 2017-04-19 | Deposition mode construction method based on drought and climate constraints |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109685402A (en) * | 2019-02-21 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of comprehensive quantification restoration methods of lacustrine deposit environment |
| WO2020147208A1 (en) * | 2019-01-15 | 2020-07-23 | 中国石油大学(华东) | Method for determining development range of favourable weathered crust reservoir in lithologically complex buried hill |
| CN113065236A (en) * | 2021-03-19 | 2021-07-02 | 吉林大学 | Analysis method for continuous sediment paleoclimate substitution index tashengmycin gyrus change |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020147208A1 (en) * | 2019-01-15 | 2020-07-23 | 中国石油大学(华东) | Method for determining development range of favourable weathered crust reservoir in lithologically complex buried hill |
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| CN113065236A (en) * | 2021-03-19 | 2021-07-02 | 吉林大学 | Analysis method for continuous sediment paleoclimate substitution index tashengmycin gyrus change |
| CN113065236B (en) * | 2021-03-19 | 2022-03-11 | 吉林大学 | Analysis method for continuous sediment paleoclimate substitution index tashengmycin gyrus change |
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