CN109141810B - A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration - Google Patents
A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration Download PDFInfo
- Publication number
- CN109141810B CN109141810B CN201810826441.5A CN201810826441A CN109141810B CN 109141810 B CN109141810 B CN 109141810B CN 201810826441 A CN201810826441 A CN 201810826441A CN 109141810 B CN109141810 B CN 109141810B
- Authority
- CN
- China
- Prior art keywords
- water channel
- turbidity
- ancient
- turbidity current
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, first it is based on high-resolution three-dimension seismic data, well shake combines, using seismic facies analysis technique, ancient turbidity channel is finely characterized, is moved towards along water channel, choose a series of sampling points, sampling point is that water channel is bent band peak point, using a series of water channel cross sections and along water channel thalweg section, reads water channel structure parameters；Richardson number R is iterated to calculate againi, ancient turbidity current flow velocity U is then calculated, ancient turbidity current kinetic parameter Froude number F is finally soughtrWith deposition flux Q；The present invention can quantitative reconstruction buried underground turbidity channel formation when turbidity current kinetic parameter, the disadvantage of sudden, serious destructive, the direct observation hardly possible of MODERN SEAFLOOR turbidity current is overcome, Gu turbidity current deposit process study provides theoretical foundation when being formed for turbidity channel reservoir.
Description
Technical field
The present invention relates to ancient paddy soil recovery technology field, specially a kind of ancient turbidity current dynamics ginseng based on water channel configuration
Number restoration methods.
Background technique
Main thoroughfare due to deep water water channel as seabed transported deposit object forms good oil and gas reservoir, and saves
Therefore a large amount of geologic climate and palaeocurrent evidence are always the hot spot of deposition educational circles research both at home and abroad, wherein turbid for a long time
Product rock reservoir is the important goal of extra large oily Oil And Gas Exploration And Development.And the deposition process of turbidity current is to the space point of turbidite reservoir
Cloth, reservoir quality have important influence, therefore, need to carry out further investigation to turbidity current deposit process, sediment dynamics mechanism.
Due to the sudden and huge destructiveness of seabed turbidity current, deposition process is difficult directly to observe, and turbidite appears, rock core, brill
Well logging and seismic data are used to study underwater turbidity current temporal-spatial evolution.But how turbidite phase and turbidity current dynamics to be joined
It is to carry out the difficult point of sediment dynamics research to buried underground turbidite that number, which establishes connection, and there is presently no pertinent literatures to deliver.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the object of the present invention is to provide a kind of Gus based on water channel configuration
Turbidity current kinetic parameter restoration methods, can quantitative reconstruction buried underground turbidity channel formation when turbidity current kinetic parameter.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, comprising the following steps:
1) it is based on high-resolution three-dimension seismic data, well shake combines, using seismic facies analysis technique, to ancient turbidity channel essence
Thin characterization, is moved towards along water channel, chooses a series of sampling points, and sampling point is that water channel is bent band peak point, utilizes a series of water channel cross sections
With along water channel thalweg section, read water channel structure parameters, water channel structure parameters include channel width w, water channel depth h,
The unit m of water channel bottom configuration gradient S, channel width w, the unit m of water channel depth h, the unit arc of water channel bottom configuration gradient S
Degree；
2) the water channel structure parameters obtained according to the first step, combinatorial formula (1) and formula (2) iterate to calculate Richardson number
Ri；
Wherein, ewCoefficient, dimensionless are inhaled to be involved in the volume of the surrounding seawater of turbidity current；CfbFriction between turbidity current and seabed
Coefficient, Cfb=0.002~0.005；S is the water channel bottom configuration gradient；
3) formula (3), (4) and (5) are utilized, ancient turbidity current flow velocity U is calculated,
Cfi=ew(1+0.5Ri) (3)
Wherein, CfiCoefficient of friction between turbidity current and surrounding seawater；R is turbidity current skin-friction coefficient and bottom friction system
Number ratio, dimensionless；R=(ρsed–ρw)/ρw, ρsedFor sediment density, ρwFor pure water density；C is volumetric concentration, C=0.2%
~0.6%；G is acceleration of gravity, g=9.8m/s2；H is water channel depth, unit m；
4) the ancient turbidity current flow velocity U for obtaining step 3) substitutes into formula (6) and (7), seeks ancient turbidity current kinetic parameter not Lip river
Moral number FrWith deposition flux Q,
Q=Uwh (6)
Wherein, w is channel width, unit m.
The invention has the benefit that when being formed using brill well logging and high-resolution three-dimension seismic data to ancient turbidity channel
Turbidity current deposit kinetic parameter (Ri,U,Fr, Q) recovery overcome modern turbidity current deposit activity and directly observe difficult disadvantage, be
Ancient turbidity channel sediment dynamics research provides powerful, and to the turbid distribution for storing up layer, configuration and reservoir quality research
With important directive significance.Ancient turbidity current kinetic parameter restoration methods based on water channel configuration of the invention, can be accurately
Hydrodynamic parameter when the buried underground Gu turbidity channel of quantitative reconstruction is formed, can be applied in petroleum natural gas exploration field
The work such as High precision reservoir prediction, evaluating reservoir and the well site deployment of turbidite reservoir in, exploratory well can be effectively improved and opened
The drilling success of well is sent out, with important application prospects and economic value is invented.
Detailed description of the invention
Fig. 1 is water channel configuration schematic diagram of the present invention, and figure (a) is water channel planar distribution ideograph；Scheme the sluice (b) and is bent band
Peak point cross section ideograph；Scheming (c) is water channel thalweg section.
Fig. 2 is certain the research area's Gu turbidity channel figure of the embodiment of the present invention 1.
Fig. 3 is certain the research area's Gu turbidity channel figure of the embodiment of the present invention 2.
Fig. 4 is certain the research area's Gu turbidity channel figure of the embodiment of the present invention 3.
Specific embodiment
It elaborates with reference to the accompanying drawings and examples to the present invention.
Embodiment 1, certain research area, a kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, including it is following
Step:
1) based on certain research area's high-resolution three-dimension seismic data, using seismic facies analysis technique, to ancient turbidity channel essence
Thin characterization is moved towards along water channel as depicted in figs. 1 and 2, chooses a series of sampling points, sampling point is that water channel is bent band peak point, such as Fig. 1 a
Shown in middle A, B, C, D；Using a series of water channel cross sections and along water channel thalweg section, as shown in fig. 1b and fig. lc, read
Fetch water road structure parameters (channel width w, m；Water channel depth h, m；Water channel bottom configuration gradient S, radian), it is shown in Table 1,
2) the water channel structure parameters being calculated according to the first step, combinatorial formula (1) and formula (2), iterative calculation reason are looked into
Gloomy several Ri, it is shown in Table 1；
Wherein, ewCoefficient, dimensionless are inhaled to be involved in the volume of the surrounding seawater of turbidity current；CfbFriction between turbidity current and seabed
Coefficient, Cfb=0.002~0.005；S is the water channel bottom configuration gradient；
3) formula (3), (4) and (5) are utilized, ancient turbidity current flow velocity U is calculated, is shown in Table 1,
Cfi=ew(1+0.5Ri) (3)
Wherein, CfiCoefficient of friction between turbidity current and surrounding seawater；R is turbidity current skin-friction coefficient and bottom friction system
Number ratio, dimensionless；R=(ρsed–ρw)/ρw, ρsedFor sediment density, ρwFor pure water density；C is volumetric concentration, C=0.2%
~0.6%；G is acceleration of gravity, g=9.8m/s2；H is water channel depth, unit m；
4) the ancient turbidity current flow velocity U for obtaining step 3) substitutes into formula (6) and (7), seeks ancient turbidity current kinetic parameter not Lip river
Moral number FrWith deposition flux Q, it is shown in Table 1,
Q=Uwh (6)
Wherein, w is channel width, unit m.
Certain the research area's Gu turbidity channel structure parameters of table 1 and ancient turbidity current kinetic parameter computational chart
The present embodiment has the beneficial effect that literature search discovery forefathers mostly with modern turbidity current or ocean current observation method, carry out
The research of turbidity current hydrodynamic condition.However due to the sudden and huge destructiveness of seabed turbidity current, deposition process is difficult directly
Observation.The Gu when water channel formation of the water channel configuration quantitative reconstruction portrayed the present invention is based on high-resolution three-dimension seismic
Turbidity current kinetic parameter (Fig. 2 and table 1).The present invention and conventional method comparison, conventional method are only capable of that MODERN SEAFLOOR occurs turbid
Stream activity is studied, and the turbidity current dynamic conditions being difficult to when being formed to the ancient turbidity channel of buried underground conducts a research, and
The ancient turbidity current kinetic parameter of certain research area's ancient land slope turbidity channel deposition period of the method for the present invention quantitative reconstruction, research achievement
It can be applied in the research area turbidity channel reservoir prediction and evaluation study.
Embodiment 2, certain research area, a kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, including it is following
Step:
1) based on certain research area's high-resolution three-dimension seismic data, using seismic facies analysis technique, to ancient turbidity channel essence
Thin characterization is moved towards along water channel as shown in figures 1 and 3, chooses a series of sampling points, sampling point is that water channel is bent band peak point, such as Fig. 1 a
Shown in middle A, B, C, D；Using a series of water channel cross sections and along water channel thalweg section, as shown in fig. 1b and fig. lc, read
Fetch water road structure parameters (channel width w, m；Water channel depth h, m；Water channel bottom configuration gradient S, radian), 2 are shown in Table,
2) the water channel structure parameters being calculated according to the first step, combinatorial formula (1) and formula (2), iterative calculation reason are looked into
Gloomy several Ri, it is shown in Table 2；
Wherein, ewCoefficient, dimensionless are inhaled to be involved in the volume of the surrounding seawater of turbidity current；CfbFriction between turbidity current and seabed
Coefficient, Cfb=0.002~0.005；S is the water channel bottom configuration gradient；
3) formula (3), (4) and (5) are utilized, ancient turbidity current flow velocity U is calculated, is shown in Table 2,
Cfi=ew(1+0.5Ri) (3)
Wherein, CfiCoefficient of friction between turbidity current and surrounding seawater；R is turbidity current skin-friction coefficient and bottom friction system
Number ratio, dimensionless；R=(ρsed–ρw)/ρw, ρsedFor sediment density, ρwFor pure water density；C is volumetric concentration, C=0.2%
~0.6%；G is acceleration of gravity, g=9.8m/s2；H is water channel depth, unit m；
4) the ancient turbidity current flow velocity U for obtaining step 3) substitutes into formula (6) and (7), seeks ancient turbidity current kinetic parameter not Lip river
Moral number FrWith deposition flux Q, 2 are shown in Table,
Q=Uwh (6)
Wherein, w is channel width, unit m.
Certain the research area's Gu turbidity channel structure parameters of table 2 and ancient turbidity current kinetic parameter computational chart
The present embodiment has the beneficial effect that literature search discovery forefathers mostly with modern turbidity current or ocean current observation method, carry out
The research of turbidity current hydrodynamic condition.However due to the sudden and huge destructiveness of deep water turbidity current, deposition process is difficult directly
Observation.The Gu when water channel formation of the water channel configuration quantitative reconstruction portrayed the present invention is based on high-resolution three-dimension seismic
Turbidity current kinetic parameter (Fig. 3 and table 2), the present invention and conventional method comparison, conventional method are only capable of that MODERN SEAFLOOR occurs turbid
Stream activity is studied, and the turbidity current dynamic conditions being difficult to when being formed to the ancient turbidity channel of buried underground conducts a research, and
The ancient turbidity current kinetic parameter of certain research area's ancient land slope turbidity channel deposition period of the method for the present invention quantitative reconstruction, research achievement
It can be applied in the research area turbidity channel reservoir prediction and evaluation study.
Embodiment 3, certain research area, a kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, including it is following
Step:
1) based on certain research area's high-resolution three-dimension seismic data, using seismic facies analysis technique, to ancient turbidity channel essence
Thin characterization is moved towards along water channel as shown in Figure 1 and Figure 4, chooses a series of sampling points, sampling point is that water channel is bent band peak point, such as Fig. 1 a
Shown in middle A, B, C, D；Using a series of water channel cross sections and along water channel thalweg section, as shown in fig. 1b and fig. lc, read
Fetch water road structure parameters (channel width w, m；Water channel depth h, m；Water channel bottom configuration gradient S, radian), 3 are shown in Table,
2) the water channel structure parameters being calculated according to the first step, combinatorial formula (1) and formula (2), iterative calculation reason are looked into
Gloomy several Ri, it is shown in Table 3；
Wherein, ewCoefficient, dimensionless are inhaled to be involved in the volume of the surrounding seawater of turbidity current；CfbFriction between turbidity current and seabed
Coefficient, Cfb=0.002~0.005；S is the water channel bottom configuration gradient；
3) formula (3), (4) and (5) are utilized, ancient turbidity current flow velocity U is calculated, is shown in Table 3,
Cfi=ew(1+0.5Ri) (3)
Wherein, CfiCoefficient of friction between turbidity current and surrounding seawater；R is turbidity current skin-friction coefficient and bottom friction system
Number ratio, dimensionless；R=(ρsed–ρw)/ρw, ρsedFor sediment density, ρwFor pure water density；C is volumetric concentration, C=0.2%
~0.6%；G is acceleration of gravity, g=9.8m/s2；H is water channel depth, unit m；
4) the ancient turbidity current flow velocity U for obtaining step 3) substitutes into formula (6) and (7), seeks ancient turbidity current kinetic parameter not Lip river
Moral number FrWith deposition flux Q, 3 are shown in Table,
Q=Uwh (6)
Wherein, w is channel width, unit m.
Certain the research area's Gu turbidity channel structure parameters of table 3 and ancient turbidity current kinetic parameter computational chart
The present embodiment has the beneficial effect that literature search discovery forefathers mostly with modern turbidity current or ocean current observation method, carry out
The research of turbidity current hydrodynamic condition.However due to the sudden and huge destructiveness of deep water turbidity current, deposition process is difficult directly
Observation.The Gu when water channel formation of the water channel configuration quantitative reconstruction portrayed the present invention is based on high-resolution three-dimension seismic
Turbidity current kinetic parameter (Fig. 4 and table 3).The present invention and conventional method comparison, conventional method are only capable of that MODERN SEAFLOOR occurs turbid
Stream activity is studied, and the turbidity current dynamic conditions being difficult to when being formed to the ancient turbidity channel of buried underground conducts a research, and
The ancient turbidity current kinetic parameter of certain research area's shelf basin turbidity channel deposition period of the method for the present invention quantitative reconstruction, research at
Fruit can be applied in the research area turbidity channel reservoir prediction and evaluation study.
Claims (1)
1. a kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration, which comprises the following steps:
1) it is based on high-resolution three-dimension seismic data, well shake combines, using seismic facies analysis technique, to ancient turbidity channel fine meter
Sign is moved towards along water channel, chooses a series of sampling points, and sampling point is that water channel is bent band peak point, utilizes a series of water channel cross sections and edge
Water channel thalweg section reads water channel structure parameters, and water channel structure parameters include channel width w, water channel depth h, water channel
The unit m of bottom configuration gradient S, channel width w, the unit m of water channel depth h, the unit radian of water channel bottom configuration gradient S；
2) the water channel structure parameters obtained according to the first step, combinatorial formula (1) and formula (2) iterate to calculate Richardson number Ri；
Wherein, ewCoefficient, dimensionless are inhaled to be involved in the volume of the surrounding seawater of turbidity current；CfbFriction system between turbidity current and seabed
Number, Cfb=0.002~0.005；S is the water channel bottom configuration gradient；
3) formula (3), (4) and (5) are utilized, ancient turbidity current flow velocity U is calculated,
Cfi=ew(1+0.5Ri) (3)
Wherein, CfiCoefficient of friction between turbidity current and surrounding seawater；R is turbidity current skin-friction coefficient and bottom friction coefficient ratio
Value, dimensionless；R=(ρsed–ρw)/ρw, ρsedFor sediment density, ρwFor pure water density；C is volumetric concentration, C=0.2%~
0.6%；G is acceleration of gravity, g=9.8m/s2；H is water channel depth, unit m；
4) the ancient turbidity current flow velocity U for obtaining step 3) substitutes into formula (6) and (7), seeks ancient turbidity current kinetic parameter Froude number Fr
With deposition flux Q,
Q=Uwh (6)
Wherein, w is channel width, unit m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826441.5A CN109141810B (en) | 2018-07-25 | 2018-07-25 | A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826441.5A CN109141810B (en) | 2018-07-25 | 2018-07-25 | A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109141810A CN109141810A (en) | 2019-01-04 |
| CN109141810B true CN109141810B (en) | 2019-05-10 |
Family
ID=64798972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810826441.5A Active CN109141810B (en) | 2018-07-25 | 2018-07-25 | A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141810B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112230301B (en) * | 2020-09-18 | 2022-02-15 | 西南石油大学 | Method for dividing cause types of deepwater water channels |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080154562A1 (en) * | 2006-12-21 | 2008-06-26 | Francois Blanchette | High resolution numerical simulations of resuspending gravity currents |
| CN102257377B (en) * | 2008-12-18 | 2014-09-10 | 埃克森美孚上游研究公司 | Overlapped multiple layer depth averaged flow model of a turbidity current |
| US10108760B2 (en) * | 2014-09-05 | 2018-10-23 | Chevron U.S.A. Inc. | Sediment transport simulation with parameterized templates for depth profiling |
| CN105116467B (en) * | 2015-08-14 | 2017-10-10 | 中国石油大学(华东) | Analyze of Nearshore Subaqueous Fans glutenite sedimentation unit body division methods |
| CN105803994B (en) * | 2016-03-10 | 2017-11-10 | 成都理工大学 | A kind of underwater turbidity current forms Forecasting Methodology and the application in river course |
-
2018
- 2018-07-25 CN CN201810826441.5A patent/CN109141810B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| Channel formation by flow stripping: large-scale scour features along the Monterey East Channel and their relation to sediment waves;Andrea Fildani，etc.;《Sedimentology》;20061231;第53卷(第6期);第1265-1287页 |
| Experiments on turbidity currents over an erodible bed;G.Parker,etc.;《Journal of Hydraulic Research》;19870131;第25卷(第1期);第123-146页 |
| The response of turbidity currents to a canyon-fan transition: internal hydraulic jumps and depositional signatures;Svetlana Kostic，ETC.;《Journal of hydraulic Research》;20060531;第44卷(第5期);第631-653页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109141810A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Anderson et al. | Recycling sediments between source and sink during a eustatic cycle: Systems of late Quaternary northwestern Gulf of Mexico Basin | |
| Berne et al. | Pleistocene forced regressions and tidal sand ridges in the East China Sea | |
| Grammer et al. | Integration of outcrop and modern analogs in reservoir modeling: Overview with examples from the Bahamas | |
| Jouet et al. | Shoreface migrations at the shelf edge and sea-level changes around the Last Glacial Maximum (Gulf of Lions, NW Mediterranean) | |
| Sullivan et al. | Architectural analysis of deep-water outcrops: Implications for exploration and development of the Diana sub-basin, western Gulf of Mexico | |
| Riedel et al. | Documenting channel features associated with gas hydrates in the Krishna–Godavari Basin, offshore India | |
| Snedden et al. | Origin and geometry of storm‐deposited sand beds in modern sediments of the Texas continental shelf | |
| Yin et al. | Continental slope-confined canyons in the Pearl River Mouth Basin in the South China Sea dominated by erosion, 2004–2018 | |
| Rosa et al. | River-dominated deltas: upscaling autogenic and allogenic processes observed in laboratory experiments to field examples of small deltas in southern Brazil | |
| Mylroie et al. | Void development on carbonate coasts: creation of anchialine habitats | |
| Snedden | Channel-body basal scours: Observations from 3D seismic and importance for subsurface reservoir connectivity | |
| Mulder et al. | Progress in deep-sea sedimentology | |
| Li et al. | Deep-water channels in the lower Congo basin: Evolution of the geomorphology and depositional environment during the Miocene | |
| CN109141810B (en) | A kind of ancient turbidity current kinetic parameter restoration methods based on water channel configuration | |
| Collett | Gas hydrate petroleum systems in marine and arctic permafrost environments | |
| Awasthi et al. | Shallow Subsurface Facies of Chhoti Gandak River Basin, Ganga Plain, India | |
| Li et al. | Controls of accommodation to sediment-supply ratio on sedimentary architecture of continental fluvial successions | |
| FAN et al. | Genesis and Characteristics of Miocene Deep‐water Clastic Rocks in Yinggehai and Qiongdongnan Basins, Northern South China Sea | |
| Zhu et al. | Recent geomorphic changes in the Liaohe Estuary | |
| Sullivan et al. | Distribution, nature and origin of mobile mud features offshore Trinidad | |
| Menpes et al. | Emerging continuous gas plays in the Cooper Basin, South Australia | |
| Laigle et al. | 3-D process modelling of ancient storm-dominated deposits by an event-based approach: Application to Pleistocene-to-modern Gulf of Lions deposits | |
| FENG et al. | Geological Interpretation and Hydrocarbon Exploration Potential of Three Types of Mound‐shaped Reflectors in the Meishan Formation, Southern Qiongdongnan Basin | |
| Pezza Andrade et al. | Shallow gas high-resolution seismic signatures in a subtropical estuary | |
| CN109917489A (en) | A kind of new method that underground bearing water position determines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |