Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China

Lei Chen; Yongchao Lu; Tonglou Guo; Fengcun Xing; Yangquan Jiao

doi:10.1007/s12583-012-0278-x

Volume 23 Issue 4

Aug 2012

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Journal of Earth Science > 2012 > 23(4): 612-626.

Lei Chen, Yongchao Lu, Tonglou Guo, Fengcun Xing, Yangquan Jiao. Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China. Journal of Earth Science, 2012, 23(4): 612-626. doi: 10.1007/s12583-012-0278-x

Citation:

Lei Chen, Yongchao Lu, Tonglou Guo, Fengcun Xing, Yangquan Jiao. Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China. Journal of Earth Science, 2012, 23(4): 612-626. doi: 10.1007/s12583-012-0278-x

Citation:

Lei Chen, Yongchao Lu, Tonglou Guo, Fengcun Xing, Yangquan Jiao. Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China. Journal of Earth Science, 2012, 23(4): 612-626. doi: 10.1007/s12583-012-0278-x

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Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China

doi: 10.1007/s12583-012-0278-x

Lei Chen^{1
,
,},
Yongchao Lu¹,
Tonglou Guo²,
Fengcun Xing^{3, 4},
Yangquan Jiao^{1, 5}

1.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China
2.
Southern Exploration and Development Division Company of SINOPEC, Chengdu 610082, China
3.
Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China
4.
State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China
5.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China

Funds:

the SINOPEC Group Project 2009026324

More Information

Corresponding author: Lei Chen, cl211@126.com
Received Date: 10 Feb 2012
Accepted Date: 08 May 2012
Publish Date: 01 Aug 2012

Abstract

Abstract

The Yuanba (元坝) area is considered another potential large-scale reef-bank gas field following the Puguang (普光) field. However,there are lots of difficulties on the spatial and temporal distribution of reef-beach and the detailed prediction of the effective reservoir in the sequence stratigraphic framework. In this paper,based on the seismic data,well,log and core,we conduct a high-resolution sequence division and build an isochronal sequence stratigraphic framework for the Changxing (长兴) Formation by the methods of wavelet transformation,FMI,etc.. Then,the corresponding relationship among the lithologic facies,logging facies,seismic facies,seismic attribute facies and reservoir of Changxing Formation were established through well-seismic calibration and geological-geophysical modeling. Furthermore,detailed study on the spatial and temporal distribution of microfacies of the reef-beach was carried out by means of seismic attribute extraction. Meanwhile,combined with impedance inversion,the spatial distribution of porosity of reef-beach reservoir was predicted. The results show that the revolution of the reef-beach system contains three stages which are initial bioclastic bank establishment stage,reef development stage and exposure stage. Also,porosity inversion shows that the region with high value of porosity is located in the reef cap,fore reef and back reef.
- seismic sedimentology,
- platform margin,
- reef-beach system,
- Changxing Formation,
- Yuanba area,
- Northeast Sichuan basin

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References

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Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China

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Seismic Sedimentology Study in the High-Resolution Sequence Framework—A Case Study of Platform Margin Reef-Beach System of Changxing Formation, Upper Permian, Yuanba Area, Northeast Sichuan Basin, China

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