CN105629300B - The method for improving complicated structure offset data signal-to-noise ratio - Google Patents
The method for improving complicated structure offset data signal-to-noise ratio Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
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Abstract
Description
Inline | CrossLine | Time |
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24 | 1180 | 460 |
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Claims (3)
- A kind of 1. method for improving complicated structure offset data signal-to-noise ratio, it is characterised in that the method includes the steps:A, seismic data is gathered, migrated section is obtained after pretreatment, migration processing offset;B, time sampling point before the first arrival of migrated section is arranged to null value, and increases data time number of samples;C, tectonic level file pickup is carried out to offset data, and carries out full three-dimension layer position linear interpolation processing;D, give correction and even up processing time point value, computation layer position per pass time and the difference of its given point in time, as per pass The correcting value of correction is evened up, whole data are carried out to even up processing;E, segmentation dip filtering compacting coherent noise processing is carried out to the data of step D;F, segment processing data in step E are carried out with the smear processing of segmentation time-varying;G, segment data in step F is merged, and data is extracted again by road and offset distance, be corrected reverse drawing and put down place Reason, obtains offset data after compacting coherent noise,Wherein, the segmentation time-varying smear processing of the step F is using by before the data after region filtering processing in step E and denoising Segment data carry out time-varying smear processing, its formula is:yi,j=xi,j*aj+si,j*bjWherein, yi,jFor data after the processing of time-varying smear, xi,jFor data after denoising, si,jFor data before denoising, ajAnd bjRespectively Smear scale factor after j moment denoisings, before denoising.
- 2. the method according to claim 1 for improving complicated structure offset data signal-to-noise ratio, it is characterised in that the step Increase 1/7 to 1/4 time sampling point that data time number of samples refers at least increase data sample sum, and the increasing in B The time sampling point added is assigned a value of zero.
- 3. the method according to claim 1 for improving complicated structure offset data signal-to-noise ratio, it is characterised in that the step The tectonic level file pickup that carried out to offset data in C refers to that pickup needs complicated structure lineups layer position to be protected.
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CN105629300B true CN105629300B (en) | 2018-05-15 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107153217B (en) * | 2017-07-10 | 2019-03-29 | 中国石油集团东方地球物理勘探有限责任公司 | A kind of low signal-to-noise ratio regional model road construction method |
CN110967738A (en) * | 2018-09-30 | 2020-04-07 | 中国石油化工股份有限公司 | Seismic data interpolation processing method and system based on deep learning |
CN111781644B (en) * | 2019-04-03 | 2022-11-04 | 中国石油天然气股份有限公司 | Linear interference attenuation method and device for shallow and medium stratum seismic data |
CN112083490B (en) * | 2019-06-12 | 2024-03-01 | 中国石油天然气集团有限公司 | Seismic data noise attenuation method and device |
CN111624659B (en) * | 2020-06-05 | 2022-07-01 | 中油奥博(成都)科技有限公司 | Time-varying band-pass filtering method and device for seismic data |
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GB2376527B (en) * | 2001-06-16 | 2004-12-15 | Westerngeco Ltd | A method of processing data |
CN101339252B (en) * | 2008-08-08 | 2010-08-18 | 吉林大学 | Directional lighting seismic exploration method based on single earthquake focus |
CN103412329B (en) * | 2013-08-06 | 2015-09-16 | 中国海洋石油总公司 | A kind of method improving seismic data resolution |
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Address after: No. 216, No. 216, Huayang Avenue, Tianfu New District, Sichuan, Sichuan Applicant after: China National Petroleum Corporation Chuanqing Drilling Engineering Geophysical Exploration Company Ltd. Address before: No. 216, No. 216, Huayang Avenue, Huayang Town, Shuangliu County, Shuangliu County, Sichuan Applicant before: China National Petroleum Corporation Chuanqing Drilling Engineering Geophysical Exploration Company Ltd. |
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Effective date of registration: 20180330 Address after: No. 189, fan Yangxi Road, Zhuozhou City, Baoding, Hebei Applicant after: Dongfang Geophysical Exploration Co., Ltd., China Petrochemical Corp. Address before: No. 216, No. 216, Huayang Avenue, Tianfu New District, Sichuan, Sichuan Applicant before: China National Petroleum Corporation Chuanqing Drilling Engineering Geophysical Exploration Company Ltd. |
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Effective date of registration: 20201112 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: BGP Inc., China National Petroleum Corp. Address before: No. 189, fan Yangxi Road, Zhuozhou City, Baoding, Hebei Patentee before: BGP Inc., China National Petroleum Corp. |
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