CN103364822A - Layering method suitable for shallow stratum layer of sedimentation basin - Google Patents
Layering method suitable for shallow stratum layer of sedimentation basin Download PDFInfo
- Publication number
- CN103364822A CN103364822A CN2012100979836A CN201210097983A CN103364822A CN 103364822 A CN103364822 A CN 103364822A CN 2012100979836 A CN2012100979836 A CN 2012100979836A CN 201210097983 A CN201210097983 A CN 201210097983A CN 103364822 A CN103364822 A CN 103364822A
- Authority
- CN
- China
- Prior art keywords
- meters
- wave
- stratum
- impedance parameter
- shallow layer
- 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.)
- Granted
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to a layering method suitable for a shallow stratum layer of a sedimentation basin. The method successively comprises that 1) seismic waves are carried out the shallow stratum layer of the sedimentation basin, a dispersion curve of the seismic waves is extracted, and the density and longitudinal-wave speed of the stratum layer within a detection range are obtained via inversion; 2) the wave impedance parameter which is the product of the density (t/m<3>) and the longitudinal-wave speed (m/s) is obtained; and 3) the minimum value 1400-1600 and the maximum value 3400-3600 of the wave impedance parameter are selected, and contour lines are made every 500 units from low to high within the range from the minimum value to the maximum value to successively form a gravel-contained sandstone layer, a gravel-contained coarse sandstone layer, a gravel-contained mudstone layer and a mudstone layer. According to the method, the wave impedance parameter is the product of the density and the longitudinal-wave speed, and the performance of the stratum layer is divided according to different value ranges of the impedance parameter, thereby providing basis for predicting the coal position in a gulch-gold sandstone uranium mine.
Description
Technical field
The present invention relates to a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum, particularly relate to a kind of seismic event that utilizes, bulk density and velocity of longitudinal wave, and the layered approach that utilizes wave impedance to carry out.
Background technology
For the strata in sedimentary basins layering, method of seismic prospecting is one of method of commonly using.The method is surveyed buried depth and often can be obtained preferably result greater than the stratum below the hundreds of rice or substrate (when wave impedance difference is larger) according to the tracking of reflection line-ups.Yet, for the gold dust with higher economic worth, sandstone-type uranium mineralization with respect, coal etc., quite a few buried depth is more shallow, and become the wave impedance difference of ore deposit zone of interest and country rock less, so that country rock can not produce reflection line-ups usually with the interface that becomes the ore deposit zone of interest; In addition, in order to obtain the reflection wave than high s/n ratio, generally choose larger offset distance, this has also caused the increasing of reflection wave exploration blind area.This has increased the difficulty that the one-tenth ore deposit zone of interest in this depth range is surveyed in seismic prospecting.In order to utilize seismic prospecting to realize the sedimentary basin shallow layer stratum is carried out layering, must do necessary innovation and improvement at earthquake data acquisition and layered mode.
Summary of the invention
The technical problem to be solved in the present invention provides the layered approach that a kind of layering consistance is applicable to the sedimentary basin shallow layer stratum preferably.
For solving the problems of the technologies described above, a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum of the present invention may further comprise the steps successively:
The first step, to the sedimentary basin shallow layer stratum, utilize seismic event, extract the dispersion curve of seismic event, extract density and the velocity of longitudinal wave on stratum in the investigative range by the dispersion curve of seismic event;
Second step, obtain wave impedance parameter, wave impedance parameter is density (ton/m
3) with the product of velocity of longitudinal wave (m/s);
The 3rd goes on foot, chooses the minimum 1400～1600 of wave impedance parameter, choose the mxm. 3400-3600 of wave impedance parameter, in minimum arrives the scope of mxm., an isoline is divided in per 500 unit gaps from low to high, forms successively the conglomeratic sand rock stratum, contains gravel coarse sand rock stratum, contains gravel shale layer and shale layer.
In the first step, utilize seismic event, the detection condition of extracting the dispersion curve of seismic event is: the earthquake-capturing road is 12 integral multiple, wave detector frequency 4Hz-20Hz, 5 meters-30 meters of offset distances, 1 meter-10 meters of track pitches, 0.5 millisecond-2 milliseconds of sampling rates, record length 1 second-2 seconds, end points excites, 3 meters-10 meters of well depths, 1 kilogram-2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 5 meters-50 meters.
The total depth of sedimentary basin shallow layer stratum is 0～150 meter.
When the total depth for the treatment of stratified formations less than 50 meters, the earthquake-capturing road is 12 roads, wave detector frequency 20Hz, 5 meters of offset distances, 1 meter of track pitch, 0.5 millisecond of sampling rate, record length 1 second, end points excites, 3 meters of well depths, 1 kilogram of dose; Along survey line, carry out field survey according to the shot interval of fixing 5 meters.
When the total depth for the treatment of stratified formations is 50 meters to 100 meters, the earthquake-capturing road is 48 roads, wave detector frequency 10Hz, and 10 meters of offset distances, 5 meters of track pitches, 1 millisecond of sampling rate, record length 2 seconds, end points excites, 4 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 10 meters.
When the total depth for the treatment of stratified formations is 100 meters to 150 meters, the earthquake-capturing road is 96 roads, wave detector frequency 4Hz, and 30 meters of offset distances, 10 meters of track pitches, 2 milliseconds of sampling rates, record length 2 seconds, end points excites, 10 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 50 meters.
In engineering exploration, utilize seismic event usually to extract shear wave velocity, care be the mechanical property of rock, investigation depth generally in 20 meters, can not satisfy the requirement of resource exploration.And in resource exploration, usually utilize seismic prospecting to survey the stratum, the degree of depth of reaction greater than 150 meters the time, utilize reflection wave in the same way axle carry out stratigraphic division.Because in 150 meters, reflection coefficient is little between the stratum, is not enough to form the reflection line-ups of reflection wave and formation thereof, then can't utilize reflection wave to carry out strata division.The present invention utilizes seismic event to extract density and velocity of longitudinal wave parameter, and directly the product with two parameters forms wave impedance parameter, and utilizes the different spans of wave impedance parameter to divide the stratum, is prediction gold dust, sandstone-type uranium mineralization with respect, and the position of coal provides foundation.
Layering result of the present invention is through contrasting with borehole data, and the consistance of layering is better.
The investigative range that the present invention chooses is to make up for different detected object buried depths and the requirement of fine degree, has reached the geologic assessment requirement to different mineral.
Embodiment
Embodiment one
The present invention may further comprise the steps successively:
The first step, when the total depth for the treatment of stratified formations less than 50 meters, utilize seismic event, extract the dispersion curve of seismic event; The detection condition is: the earthquake-capturing road is 12 roads, wave detector frequency 20Hz, and 5 meters of offset distances, 1 meter of track pitch, 0.5 millisecond of sampling rate, record length 1 second, end points excites, 3 meters of well depths, 1 kilogram of dose; Along survey line, carry out field survey according to the shot interval of fixing 5 meters;
Dispersion curve by seismic event extracts, density and the velocity of longitudinal wave on stratum in the inverting investigative range;
Second step, obtain wave impedance parameter, wave impedance parameter is density (ton/m
3) with the product of velocity of longitudinal wave (m/s);
The 3rd goes on foot, chooses the minimum 1400 of wave impedance parameter, choose the mxm. 3400 of wave impedance parameter, in minimum arrives the scope of mxm., an isoline is divided in per 500 unit gaps from low to high, forms successively the conglomeratic sand rock stratum, contains gravel coarse sand rock stratum, contains gravel shale layer and shale layer.
Embodiment two
The present invention may further comprise the steps successively:
The first step, when the total depth for the treatment of stratified formations be 50 meters to 100 meters, utilize seismic event, extract the dispersion curve of seismic event; The detection condition is: the earthquake-capturing road is 48 roads, wave detector frequency 10Hz, and 10 meters of offset distances, 5 meters of track pitches, 1 millisecond of sampling rate, record length 2 seconds, end points excites, 4 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 10 meters;
Density and velocity of longitudinal wave by stratum in the dispersion curve inverting investigative range of seismic event;
Second step, obtain wave impedance parameter, wave impedance parameter is density (ton/m
3) with the product of velocity of longitudinal wave (m/s);
The 3rd goes on foot, chooses the minimum 1500 of wave impedance parameter, choose the mxm. 3500 of wave impedance parameter, in minimum arrives the scope of mxm., an isoline is divided in per 500 unit gaps from low to high, forms successively the conglomeratic sand rock stratum, contains gravel coarse sand rock stratum, contains gravel shale layer and shale layer.
Embodiment three
The present invention may further comprise the steps successively:
The first step, when the total depth for the treatment of stratified formations be 100 meters to 150 meters, utilize seismic event, extract the dispersion curve of seismic event; The detection condition is: the earthquake-capturing road is 96 roads, wave detector frequency 4Hz, and 30 meters of offset distances, 10 meters of track pitches, 2 milliseconds of sampling rates, record length 2 seconds, end points excites, 10 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 50 meters;
Density and velocity of longitudinal wave by stratum in the dispersion curve inverting investigative range of seismic body wave;
Second step, obtain wave impedance parameter, wave impedance parameter is density (ton/m
3) with the product of velocity of longitudinal wave (m/s);
The 3rd goes on foot, chooses the minimum 1600 of wave impedance parameter, choose the mxm. 3600 of wave impedance parameter, in minimum arrives the scope of mxm., an isoline is divided in per 500 unit gaps from low to high, forms successively the conglomeratic sand rock stratum, contains gravel coarse sand rock stratum, contains gravel shale layer and shale layer.
Above-mentioned three embodiment are preferred version of the present invention, the present invention is not limited thereto, core viewpoint of the present invention is to utilize seismic event to extract density and velocity of longitudinal wave parameter, directly the product with two parameters forms wave impedance parameter, and utilizes the different spans of wave impedance parameter to divide the stratum.As long as the detection condition satisfies: the earthquake-capturing road is 12 integral multiple, wave detector frequency 4-20Hz, 5 meters-30 meters of offset distances, 1 meter-10 meters of track pitches, 0.5 millisecond-2 milliseconds of sampling rates, record length 1 second-2 seconds, end points excites, 3 meters-10 meters of well depths, 1 kilogram-2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 5 meters-50 meters.Choose the minimum 1400～1600 of wave impedance parameter, choose the mxm. 3400-3600 of wave impedance parameter.Under such detection condition, can satisfy, total depth is the layering of 0～150 meter sedimentary basin shallow layer stratum.
Claims (6)
1. layered approach that is applicable to the sedimentary basin shallow layer stratum may further comprise the steps successively:
The first step, to the sedimentary basin shallow layer stratum, utilize seismic event, extract the dispersion curve of seismic event, extract density and the velocity of longitudinal wave on stratum in the investigative range by the dispersion curve of seismic event;
Second step, obtain wave impedance parameter, described wave impedance parameter is density (ton/m
3) with the product of velocity of longitudinal wave (m/s);
The 3rd goes on foot, chooses the minimum 1400～1600 of wave impedance parameter, choose the mxm. 3400-3600 of wave impedance parameter, in minimum arrives the scope of mxm., an isoline is divided in per 500 unit gaps from low to high, forms successively the conglomeratic sand rock stratum, contains gravel coarse sand rock stratum, contains gravel shale layer and shale layer.
2. a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum according to claim 1, it is characterized in that: in the described first step, utilize seismic event, the detection condition of extracting the dispersion curve of seismic event is: the earthquake-capturing road is 12 integral multiple, wave detector frequency 4Hz-20Hz, 5 meters-30 meters of offset distances, 1 meter-10 meters of track pitches, 0.5 millisecond-2 milliseconds of sampling rates, record length 1 second-2 seconds, end points excites, 3 meters-10 meters of well depths, 1 kilogram-2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 5 meters-50 meters.
3. a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum according to claim 1, it is characterized in that: the total depth of described sedimentary basin shallow layer stratum is 0～150 meter.
4. a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum according to claim 2, it is characterized in that: when the total depth for the treatment of stratified formations less than 50 meters, the earthquake-capturing road is 12 roads, wave detector frequency 20Hz, 5 meters of offset distances, 1 meter of track pitch, 0.5 millisecond of sampling rate, record length 1 second, end points excites, 3 meters of well depths, 1 kilogram of dose; Along survey line, carry out field survey according to the shot interval of fixing 5 meters.
5. a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum according to claim 2, it is characterized in that: when the total depth for the treatment of stratified formations is 50 meters to 100 meters, the earthquake-capturing road is 48 roads, wave detector frequency 10Hz, 10 meters of offset distances, 5 meters of track pitches, 1 millisecond of sampling rate, record length 2 seconds, end points excites, 4 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 10 meters.
6. a kind of layered approach that is applicable to the sedimentary basin shallow layer stratum according to claim 2, it is characterized in that: when the total depth for the treatment of stratified formations is 100 meters to 150 meters, the earthquake-capturing road is 96 roads, wave detector frequency 4Hz, 30 meters of offset distances, 10 meters of track pitches, 2 milliseconds of sampling rates, record length 2 seconds, end points excites, 10 meters of well depths, 2 kilograms of doses; Along survey line, carry out field survey according to the shot interval of fixing 50 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210097983.6A CN103364822B (en) | 2012-04-05 | 2012-04-05 | A kind of layered approach being applicable to sedimentary basin shallow layer stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210097983.6A CN103364822B (en) | 2012-04-05 | 2012-04-05 | A kind of layered approach being applicable to sedimentary basin shallow layer stratum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103364822A true CN103364822A (en) | 2013-10-23 |
| CN103364822B CN103364822B (en) | 2016-08-24 |
Family
ID=49366589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210097983.6A Active CN103364822B (en) | 2012-04-05 | 2012-04-05 | A kind of layered approach being applicable to sedimentary basin shallow layer stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103364822B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060416A (en) * | 2019-12-23 | 2020-04-24 | 中国石油大学(北京) | Method and system for dividing surface outcrop and rock core mechanical layer |
| CN111852467A (en) * | 2020-07-28 | 2020-10-30 | 核工业北京地质研究院 | Method and system for delineating extension range of sandstone uranium ore body |
| CN113917563A (en) * | 2021-10-22 | 2022-01-11 | 核工业北京地质研究院 | Stratum partition and sandstone type uranium ore mineralization prediction method for uranium ore target layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO318907B1 (en) * | 1995-10-03 | 2005-05-18 | Schlumberger Technology Bv | Procedure for analyzing Stoneley waveforms and characterizing subsurface formations. |
| GB2421079A (en) * | 2004-12-08 | 2006-06-14 | Schlumberger Holdings | Acoustic waveform processing using dispersion curves based on a borehole-formation model having a set of borehole-formation parameters |
| CN101013161A (en) * | 2007-01-15 | 2007-08-08 | 中国石油大港油田勘探开发研究院 | Seismic exploration position calibration method based on prestack wave field simulation |
| CN101285381A (en) * | 2007-04-09 | 2008-10-15 | 中国石油大学(华东) | Process for inversing soft ground horizontal wave velocity by leaky mode waves |
-
2012
- 2012-04-05 CN CN201210097983.6A patent/CN103364822B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO318907B1 (en) * | 1995-10-03 | 2005-05-18 | Schlumberger Technology Bv | Procedure for analyzing Stoneley waveforms and characterizing subsurface formations. |
| GB2421079A (en) * | 2004-12-08 | 2006-06-14 | Schlumberger Holdings | Acoustic waveform processing using dispersion curves based on a borehole-formation model having a set of borehole-formation parameters |
| CN101013161A (en) * | 2007-01-15 | 2007-08-08 | 中国石油大港油田勘探开发研究院 | Seismic exploration position calibration method based on prestack wave field simulation |
| CN101285381A (en) * | 2007-04-09 | 2008-10-15 | 中国石油大学(华东) | Process for inversing soft ground horizontal wave velocity by leaky mode waves |
Non-Patent Citations (2)
| Title |
|---|
| 曾校丰 等: "油气反射波地震勘探记录中面波信息的提取", 《物探与化探》, vol. 25, no. 6, 31 December 2001 (2001-12-31) * |
| 朱建伟 等: "地球物理处理技术在层序地层学中的应用", 《世界地质》, vol. 20, no. 3, 30 September 2001 (2001-09-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060416A (en) * | 2019-12-23 | 2020-04-24 | 中国石油大学(北京) | Method and system for dividing surface outcrop and rock core mechanical layer |
| CN111852467A (en) * | 2020-07-28 | 2020-10-30 | 核工业北京地质研究院 | Method and system for delineating extension range of sandstone uranium ore body |
| CN113917563A (en) * | 2021-10-22 | 2022-01-11 | 核工业北京地质研究院 | Stratum partition and sandstone type uranium ore mineralization prediction method for uranium ore target layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103364822B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Paul et al. | Mapping of cleats and fractures as an indicator of in-situ stress orientation, Jharia coalfield, India | |
| Manzi et al. | Integrated interpretation of 3D seismic data to enhance the detection of the gold‐bearing reef: Mponeng Gold mine, Witwatersrand Basin (South Africa) | |
| EP2661537B1 (en) | Fracture detection via self-potential methods with an electrically reactive proppant | |
| Vishkai et al. | Modeling geomechanical properties in the montney formation, Alberta, Canada | |
| EP2652528B1 (en) | Autonomous electrical methods node | |
| RU2467171C1 (en) | Method of diagnosing dangerous situations in deep mining and forecasting parameters of fissuring zones formed by fracturing | |
| CN102798892B (en) | A kind of method utilizing transformed wave attributes extraction to analyze Effective Reservoirs | |
| Xu et al. | Evaluation of MASW techniques to image steeply dipping cavities in laterally inhomogeneous terrain | |
| Yao et al. | Status and prospects of exploration and exploitation key technologies of the deep petroleum resources in onshore China | |
| CN106285642A (en) | A kind of formation pore pressure Forecasting Methodology based on seismic data | |
| Khan et al. | Geophysical characterization of mining-induced complex geological deformations in a deep coalmine | |
| Rodríguez-Pradilla | Microseismic monitoring of a hydraulic-fracturing operation in a CBM reservoir: Case study in the Cerrejón Formation, Cesar-Ranchería Basin, Colombia | |
| CN103364822A (en) | Layering method suitable for shallow stratum layer of sedimentation basin | |
| Beaudoin et al. | Horn river basin: a study of the behavior of frac barriers in a thick shale package using the integration of microseismic, geomechanics and log analysis | |
| CN102798884B (en) | Tunnel roof two-dimensional seismic exploration method and system | |
| Noufal et al. | Enhanced core analysis workflow for the geomechanical characterization of reservoirs in a giant offshore field, Abu dhabi | |
| Jianfeng et al. | Characteristics and genesis of Paleo-Karst collapses in ordovician carbonate rocks, Tahe Oilfield | |
| Gorbunova et al. | Precision Hydrogeological Monitoring in Technogenically Disturbed Conditions: Organization, Execution, and Processing of Experimental Data | |
| Choudhary et al. | Perceiving geological risk using Tunnel Seismic Prediction during tunnelling in weak sedimentary rocks | |
| Jaume | Shear wave velocity profiles via seismic cone penetration test and refraction microtremor techniques at ANSS strong motion sites in Charleston, South Carolina | |
| Bhaskar et al. | Geological and geotechnical characterisation of Ramagundam Opencast-II of Singareni Collieries using geophysical logs | |
| Suranto et al. | Feasibility Study on the Application of Dynamic Elastic Rock Properties from Well Log for Shale Hydrocarbon Development of Brownshale Formation in the Bengkalis Trough, Central Sumatra Basin, Indonesia. | |
| RU2279695C1 (en) | Method of prospecting of carbon methane | |
| House et al. | Understanding hydraulic fractures in tight-gas sands through the integration of borehole microseismic data, three-dimensional surface seismic data, and three-dimensional vertical seismic profile data: A Jonah field case study | |
| Dickmann | Perceiving Geological Risk Using Tunnel Seismic Prediction During Tunnelling In Weak Sedimentary Rocks Kripal Choudhary |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |