CN101980055A - Digital modeling method for seismic exploration - Google Patents

Digital modeling method for seismic exploration Download PDF

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CN101980055A
CN101980055A CN 201010565905 CN201010565905A CN101980055A CN 101980055 A CN101980055 A CN 101980055A CN 201010565905 CN201010565905 CN 201010565905 CN 201010565905 A CN201010565905 A CN 201010565905A CN 101980055 A CN101980055 A CN 101980055A
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point
gray
papery
starting point
isoline
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CN101980055B (en
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李亚林
何光明
陈爱萍
胡善政
敬龙江
龙资强
耿春
邹文
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CNPC Chuanqing Drilling Engineering Co Ltd
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CNPC Chuanqing Drilling Engineering Co Ltd
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Abstract

The invention discloses a digital modeling method for seismic exploration, which relates to the technical field of processing and explanation of petroleum seismic exploration data, aims at the fact that the picture quality of a paper structure diagram is good, the continuity of contour lines in the paper structure diagram on the picture is good, and processes the paper structure diagram by adopting an automatic tracking algorithm one by one.

Description

The digital modeling method that is used for seismic prospecting
 
Technical field
The present invention relates to oil seismic exploration Data Processing and interpretation technique field, exactly relate to a kind of modeling method that the relief surface elastic wave is just being drilled that is applied to.
Background technology
Along with the high speed development of China's economic, also increasing to the demand of petroleum-based energy, national correlation department has strengthened the dynamics and the range of petroleum prospecting; Along with to the carrying out of mountain region seismic survey work with complicated earth surface structure,, also more and more higher to the accuracy requirement of geologic model in order to carry out the mountain region seismic prospecting more accurately, more targetedly.Therefore, how to provide the forward model that reacts the underground medium situation more really to become geophysics worker's vital task.By digitizing, then can obtain more truly to reflect the geologic model of subsurface picture, for the geophysics forward simulation provides technical support to the papery structrual contour.
Nearly ten years high speed developments along with computer hardware and software, our tectonic structure isogram is stored in the computer hardware with electronic format mostly at present, but with the geologic information that we geologist of previous decades gathers all is to store with the form of papery, and papery tectonic structure isogram is preserved and utilized has become our urgent problem.How to utilize again and spend the valuable material that a large amount of manpower and materials collect before us for many years and become current geophysics and important topic of geology subject.
The papery structural contour map scanning picture that the main target of papery structural contour map digitizing function just is based on different gray scales carries out the precise and high efficiency of isoline and follows the trail of automatically, to realize the digitizing of papery structural contour map, for seismic prospecting provides a kind of new modeling method, farthest excavate the practical value of historical summary simultaneously.The digitized difficult point of papery structural map is a problem of image recognition, and it belongs to the category of computer graphics, mainly contains following several disposal route at the computer graphics subject at this problem at present:
1, profile method of identification
At present for the general useful broken line segmentation of the extraction algorithm of profile more accurately of bianry image and to sectional curve match, polygonal approximation approach, method such as piecewise linear approximation, they all exist calculated amount big, the problem that arithmetic speed is slow.They can't be used in as inline graphics and discern under the application scenario that this class has relatively high expectations to real-time.Figure makes it generate a bianry image matrix (wherein visuals is entirely for white, and background parts for the ease of analyzing, all uses 1 to represent each point of visuals for black, and background dot is represented with 0) after being scanned into computing machine.Usually scanning is advanced the image of computing machine, pattern edge all can some little sawtooth, and the inner general cavity of not having, and also can not produce the edge noise of strip.
2, based on the neural network image recognition methods
Image recognition relates to a large amount of information computings, requires that processing speed is fast, accuracy of identification is high, and the real-time of neural network and fault-tolerance will meet the requirement of image recognition.Utilize improved BP neural network algorithm the rotational distortion image is located and to discern, improve algorithm the additional momentum item is combined with adaptive learning speed, suppressed network effectively and be absorbed in local minimum point, improved the training speed of network.
3, Hopfield network image recognition methods
1982, Hopfield proposed a kind of Feedback Neural Network model (HNN) [3-4], and the neural network of proof under high strength the connects synergy of depending on the collective can spontaneous generation be calculated behavior.By the successful solution of TSP problem, thereby open up neural network model newly turning up the soil in computer science is used, and be subjected to extensive concern and application.The Hopfield network had once been opened up new research approach for the development process of artificial neural network as a kind of neural network of full continuous type.It utilizes and different architectural feature and the learning methods of stratum's type neural network, and the memory mechanism of simulation biological neural network has obtained gratifying result.Although the Hopfield neural network is just to the rough of brain and simple imitation, no matter on function, on scale, all there has been bigger gap than real neural network.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of modeling method that the relief surface elastic wave is just being drilled that is applied to, the present invention is based on the papery structural contour map scanning picture of different gray scales, according to papery structural contour map picture quality and the successional difference of isoline, realized the automatic tracking of papery structural contour map precise and high efficiency, automatically follow the trail of the digitizing that has realized the papery structural contour map after finishing, for seismic prospecting provides a kind of new modeling method.
The present invention realizes by adopting following technical proposals:
A kind of digital modeling method that is used for seismic prospecting, it is characterized in that: the picture quality at the papery structural map is relatively good, and the continuity on picture of the isoline in the papery structural map is also relatively good, adopts automatic one by one tracing algorithm that the papery structural map is handled, and treatment step is as follows:
(1), the scanning picture is carried out Flame Image Process, make isoline and background in the papery structural map have tangible aberration;
(2), the available point on the click isoline obtains the search starting point, isoline again as the tail point, are followed the trail of to former and later two directions of this point both as a point then in the search starting point that is obtained;
(3), searching near point, it is poor that the gray-scale value of eight points that will be adjacent with described starting point and the gray-scale value of starting point are done, difference then is considered as gray scale in setting range identical, the close principle of gray-scale value according to the point on the same line, isoline does not have the principle of intersection simultaneously, the identical point of these gray scales then should be on a line, with the neighbor point that the searches starting point as search next time;
(4), some screening, a sampled distance greater than tracked line width is set, with searched for the line between having a few compare with sampled distance respectively, the distance of point-to-point transmission just is preserved for drawing a straight line greater than the point of described sampled distance;
(5), repeating step (2), (3) and (4) descend any search, constantly searches for, satisfy the parameter threshold value that initial user sets and then finish search up in step (2) and (3) and (4), can not find;
(6), the condition when step (2), (3) and (4) does not satisfy, then tracking stops automatically, after tracking is finished automatically, then obtains the numerical information of this papery structural contour map, finish the digitizing of papery structural contour map, the data of generation become the model data of seismic prospecting.
In the described step (3), the gray-scale value of eight points that will be adjacent with described starting point and the gray-scale value of starting point are done difference and are meant: subtract each other the difference of trying to achieve both between the gray-scale value of eight points that will be adjacent with described starting point and the gray-scale value of starting point.
In the described step (3), difference is considered as then in setting range that gray scale is identical to be meant: it is identical then to be considered as gray scale in the difference colourity threshold value that the user sets when program begins.
Compared with prior art, the technique effect that the present invention reached is as follows:
Adopt the said step of the present invention (1) to (6), the technical scheme that forms, be particularly useful at the picture quality of papery structural map relatively good, and the also reasonable situation of the continuity on picture of the isoline in the papery structural map, realized the automatic tracking of papery structural contour map precise and high efficiency, automatically follow the trail of the digitizing that has realized the papery structural contour map after finishing, for seismic prospecting provides a kind of new modeling method.
Description of drawings
The present invention is described in further detail below in conjunction with specification drawings and specific embodiments, wherein:
Fig. 1 is automatic tracing algorithm processing flow chart one by one.
Embodiment
The picture quality that the present invention is directed to the papery structural map is relatively good, and the continuity on picture of the isoline in the papery structural map is also relatively good, adopts automatic one by one tracing algorithm that the papery structural map is handled, and treatment step is as follows:
(1), the scanning picture is carried out Flame Image Process, make isoline and background in the papery structural map have tangible aberration;
(2), the available point on the click isoline obtains the search starting point, isoline again as the tail point, are followed the trail of to former and later two directions of this point both as a point then in the search starting point that is obtained;
(3), searching near point, subtract each other the difference of trying to achieve both between the gray-scale value of eight points that will be adjacent and the gray-scale value of starting point with described starting point, it is identical then to be considered as gray scale in the difference colourity threshold value that the user sets when program begins, the close principle of gray-scale value according to the point on the same line, isoline does not have the principle of intersection simultaneously, the identical point of these gray scales then should be on a line, with the neighbor point that the searches starting point as search next time;
(4), some screening, a sampled distance greater than tracked line width is set, with searched for the line between having a few compare with sampled distance respectively, the distance of point-to-point transmission just is preserved for drawing a straight line greater than the point of described sampled distance;
(5), repeating step (2), (3) and (4) descend any search, constantly searches for, satisfy the parameter threshold value that initial user sets and then finish search up in step (2) and (3) and (4), can not find;
(6), the condition when step (2), (3) and (4) does not satisfy, then tracking stops automatically, after tracking is finished automatically, then obtains the numerical information of this papery structural contour map, finish the digitizing of papery structural contour map, the data of generation become the model data of seismic prospecting.

Claims (3)

1. digital modeling method that is used for seismic prospecting, it is characterized in that: the picture quality at the papery structural map is relatively good, and the continuity on picture of the isoline in the papery structural map is also relatively good, adopt automatic one by one tracing algorithm that the papery structural map is handled, treatment step is as follows:
(1), the scanning picture is carried out Flame Image Process, make isoline and background in the papery structural map have tangible aberration;
(2), the available point on the click isoline obtains the search starting point, isoline again as the tail point, are followed the trail of to former and later two directions of this point both as a point then in the search starting point that is obtained;
(3), searching near point, subtract each other the difference of trying to achieve both between the gray-scale value of eight points that will be adjacent and the gray-scale value of starting point with described starting point, it is identical then to be considered as gray scale in the difference colourity threshold value that the user sets when program begins, the close principle of gray-scale value according to the point on the same line, isoline does not have the principle of intersection simultaneously, the identical point of these gray scales then should be on a line, with the neighbor point that the searches starting point as search next time;
(4), some screening, a sampled distance greater than tracked line width is set, with searched for the line between having a few compare with sampled distance respectively, the distance of point-to-point transmission just is preserved for drawing a straight line greater than the point of described sampled distance;
(5), repeating step (2), (3) and (4) descend any search, constantly searches for, satisfy the parameter threshold value that initial user sets and then finish search up in step (2) and (3) and (4), can not find;
(6), the condition when step (2), (3) and (4) does not satisfy, then tracking stops automatically, after tracking is finished automatically, then obtains the numerical information of this papery structural contour map, finish the digitizing of papery structural contour map, the data of generation become the model data of seismic prospecting.
2. the digital modeling method that is used for seismic prospecting according to claim 1, it is characterized in that: in the described step (3), the gray-scale value of eight points that will be adjacent with described starting point and the gray-scale value of starting point are done difference and are meant: subtract each other the difference of trying to achieve both between the gray-scale value of eight points that will be adjacent with described starting point and the gray-scale value of starting point.
3. the digital modeling method that is used for seismic prospecting according to claim 1 and 2, it is characterized in that: in the described step (3), difference is considered as then in setting range that gray scale is identical to be meant: it is identical then to be considered as gray scale in the difference colourity threshold value that the user sets when program begins.
CN 201010565905 2010-11-30 2010-11-30 Digital modeling method for seismic exploration Expired - Fee Related CN101980055B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106981084A (en) * 2016-10-28 2017-07-25 阿里巴巴集团控股有限公司 A kind of method and device of drawing isoline
CN112099091A (en) * 2019-06-17 2020-12-18 中国石油天然气集团有限公司 Seismic exploration point data static correction method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6480790B1 (en) * 1999-10-29 2002-11-12 Exxonmobil Upstream Research Company Process for constructing three-dimensional geologic models having adjustable geologic interfaces
CN101582173A (en) * 2009-06-24 2009-11-18 中国石油集团川庆钻探工程有限公司 Block model construction method for complex geological structure
CN102096102A (en) * 2010-11-30 2011-06-15 中国石油集团川庆钻探工程有限公司 Digital modeling method for seismic exploration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6480790B1 (en) * 1999-10-29 2002-11-12 Exxonmobil Upstream Research Company Process for constructing three-dimensional geologic models having adjustable geologic interfaces
CN101582173A (en) * 2009-06-24 2009-11-18 中国石油集团川庆钻探工程有限公司 Block model construction method for complex geological structure
CN102096102A (en) * 2010-11-30 2011-06-15 中国石油集团川庆钻探工程有限公司 Digital modeling method for seismic exploration

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《勘探地球物理进展》 20100228 洪余刚等 多分量地震资料储层预测研究 21-25 1-3 第33卷, 第1期 2 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106981084A (en) * 2016-10-28 2017-07-25 阿里巴巴集团控股有限公司 A kind of method and device of drawing isoline
CN106981084B (en) * 2016-10-28 2020-11-06 创新先进技术有限公司 Method and device for drawing contour line
CN112099091A (en) * 2019-06-17 2020-12-18 中国石油天然气集团有限公司 Seismic exploration point data static correction method and device
CN112099091B (en) * 2019-06-17 2024-03-01 中国石油天然气集团有限公司 Static correction method and device for seismic exploration point data

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