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Accession number:


20140417230993






Title:

Application of seismic attributes to analysis of depositional environment: taking lower member of Xiaganchaigou Formation of the Paleogene system of Maxian region as an example






Authors:

Sun, Guo-Qiang1 ; Ma, Jin-Ye2; Si, Dan2; Wang, Hai-Feng2; Wang, Long3; Shi, Ji-An1





Author affiliation:

1Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China






2Exploratory Development Institute of Qinghai Petroleum Administration, Dunhuang 736202, China






3The Second Oil Production Factory in Qinghai Oilfield, Germu 816000, China






Corresponding author:

Sun, G.-Q. (sguoqiang@lzb.ac.cn)






Source title:

Natural Gas Geoscience






Abbreviated source title:

Nat. Gas Geosci.






Volume:

24






Issue:

6






Issue date:

2013






Publication year:

2013






Pages:

1246-1252






Language:

Chinese






ISSN:

16721926






Document type:

Journal article (JA)






Publisher:

Science Press, 16 Donghuangchenggen North Street, Beijing, 100717, China






Abstract:

Based on the analyses of sedimentary sequence, lithology, particle size, and logging data from more than 20 drilling wells in Maxian region on the northern margin of the Qaidam Basin, the sedimentary characteristics and its evolution of Paleogene Lower Xiaganchaigou Formation were studied. The results showed that braided fluvial facies were the main sediment types of this formation, including channel bar, point bar, and flood plain, and the environment with water withdrawal was the main depositional environment in this period. According to the fine structural interpretation of 3D seismic data, seismic attributes can also well illustrate the changes of depositional environment of the Lower Xiaganchaigou Formation: In the early period, the sediments were mainly from northeast of the Maxian region, and a little from the north, and sandbodies were mainly dominated by the northeastern provenance; Along with the basin development, the northeastern provenance gradually migrated westward, and its supplies also decreased, in contrast, the supplies from the northern provenance increased; In the later period, the above two provenances got closed, and then developed large and contiguous sandbodies. Preliminary conclusions about the environmental evolution of Lower Xiaganchaigou Formation in Maxian region and three sandbodies distribution can provide reliable geological data for the next oil and gas exploration.






Number of references:

40






Main heading:

Deposition






Controlled terms:

Lithology  -  Sedimentology






Uncontrolled terms:

Depositional environment  -  Lower Xiaganchaigou Formation  -  Maxian region  -  Northern margin of the Qaidam Basin  -  RMS amplitude  -  Sedimentary characteristics  -  Sedimentary facies  -  Structural interpretation






Classification code:

481.1 Geology -  813.1 Coating Techniques






Database:

Compendex






Compilation and indexing terms, © 2013 Elsevier Inc.



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2楼2014-03-26 12:51:35
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baiyuefei

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Accession number:


20140417230993
3楼2014-03-26 12:52:00
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sguoqiang

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