Borehole-Driven 3D Surface Seismic Data Processing Using DAS-VSP Data

2021 ◽  
Author(s):  
Gang Yu ◽  
Junjun Wu ◽  
Yuanzhong Chen ◽  
Ximing Wang

Abstract A 3D surface seismic data acquisition project was conducted simultaneously with 3D DAS-VSP data acquisition in one well in Jilin Oilfield of Northen China. The 3D surface seismic data acquisition project covered an area of 75 km2, and one borehole (DS32-3) and an armoured optical cable with high temperature single mode fiber were used to acquire the 3D DAS-VSP data simultaneously when the crew was acquiring the 3D surface seismic data. The simultaneously acquired 3D DAS-VSP data were used to extract formation velocity, deconvolution operator, absorption, attenuation (Q value), anisotropy parameters (η, δ, ε) as wel as enhanced the surface seismic data processing including velocity model calibration and modification, static correction, deconvolution, demultiple processing, high frequency restoration, anisotropic migration, and Q-compensation or Q-migration. In this project, anisotropic migration, Q-migration was conducted with the anisotropy parameters (η, δ, ε) data volume and enhanced Q-field data volume obtained from the joint inversion of both the near surface 3D Q-field data volume from uphole data and the mid-deep layer Q-field data volume from all available VSP data in the 3D surface seismic surveey area. The anosotropic migration and Q-migration results show much sharper and focussed faults and and clearer subsutface structure.

2021 ◽  
Author(s):  
G. Yu ◽  
Y. Zhang ◽  
Q. He ◽  
X. Cai ◽  
Q. Ding ◽  
...  

2021 ◽  
Author(s):  
G. Yu ◽  
Y. S. Zhang ◽  
Q. L. He ◽  
X. L. Cai ◽  
S. S. Li ◽  
...  

First Break ◽  
2020 ◽  
Vol 38 (6) ◽  
pp. 29-36
Author(s):  
G. Yu ◽  
J.L. Xiong ◽  
J.J. Wu ◽  
Y.Z. Chen ◽  
Y.S. Zhao

Geophysics ◽  
1998 ◽  
Vol 63 (4) ◽  
pp. 1332-1338 ◽  
Author(s):  
Gregory S. Baker ◽  
Don W. Steeples ◽  
Matt Drake

A 300-m near‐surface seismic reflection profile was collected in southeastern Kansas to locate a fault(s) associated with a recognized stratigraphic offset on either side of a region of unexposed bedrock. A substantial increase in the S/N ratio of the final stacked section was achieved by muting all data arriving in time after the airwave. Methods of applying traditional seismic data processing techniques to near‐surface data (200 ms of data or less) often differ notably from hydrocarbon exploration‐scale processing (3–4 s of data or more). The example of noise cone muting used is contrary to normal exploration‐scale seismic data processing philosophy, which is to include all data containing signal. The noise cone mute applied to the data removed more than one‐third of the total data volume, some of which contains signal. In this case, however, the severe muting resulted in a higher S/N ratio in the final stacked section, even though some signal could be identified within the muted data. This example supports the suggestion that nontraditional techniques sometimes need to be considered when processing near‐surface seismic data.


2020 ◽  
Vol 39 (11) ◽  
pp. 839-839
Author(s):  
Enders Robinson ◽  
Tijmen Jan Moser

Virgil Bardan was known for his contributions to seismic data acquisition and digital data processing related to inversion, sampling, and multiple attenuation. His numerous publications and erudite presentations, in a career that extended for more than 45 years, established him as a leader in exploration geophysics.


Geophysics ◽  
1980 ◽  
Vol 45 (10) ◽  
pp. 1534-1550
Author(s):  

A delegation of 11 SEG members visited the People’s Republic of China (PRC), September 5–27, 1979, in exchange for a visit by an equal number of PRC geophysicists to the U.S., November 1–20, 1979. Represented were 7 U.S. petroleum and 4 geophysical service companies. Facilities visited were the Geophysical Research Institute and an instrument factory in Peking; Electronic Computer Center and Geophysical Research Institute in Cho Hsien, 60 km south of Peking; Shengli oil field on the Yellow River delta; Marine Branch of the Geological Exploration Corp. in Shanghai; Southwest Branch of the China Petroleum Corp. in Chengtu; and China Petroleum Corp. offices in Canton. Delegation members presented papers at each facility visited except at the instrument factory in Peking. Data processing computer systems (Chinese, French, and U.S.) were toured at the computer center and also at the Shengli oil field. The visit to the latter also included a tour of the oil field and a geochemical laboratory. A highlight was a visit to a seismic field party operating near Chungking. Group discussions followed presentations of papers by delegation members. Generally, these consisted of a description by PRC geophysicists of current seismic exploration efforts and associated problems peculiar to the areas being explored. Delegation members then endeavored to answer specific questions and offer potential solutions to problems encountered. A wide range of topics was involved, covering seismic data acquisition, processing, and interpretation. Of special interest were (1) determination of lithology, (2) reef exploration, (3) operations in areas of rugged topography, (4) deconvolution, (5) modeling and migration, and (6) static time corrections. The delegation found that PRC geophysicists generally are aware of latest techniques in seismic data acquisition and processing but are lacking in the effective application of these. Undoubtedly, this is due to incomplete acquisition of modern field equipment and data processing systems.


First Break ◽  
2005 ◽  
Vol 23 (6) ◽  
Author(s):  
R. Walia ◽  
K. Brandt ◽  
R. Duthie ◽  
R. Whittaker ◽  
E. Malterre ◽  
...  

2020 ◽  
Author(s):  
E.V. Valkova ◽  
A.S. Kornev ◽  
R.R. Nagaev ◽  
A.Y. Nikulnikov ◽  
S.V. Gorbachev ◽  
...  

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