DEPOSITIONAL FILLING MODEL AND EVOLUTION OF THE SAG IN LACUSTRINE BASIN:A CASE STUDY FROM SHAHEJIE FORMATION IN MAXI SAG, RAOYANG DEPRESSION

ZHANG Yi-ming; LI Sheng-li; LI Min; YU Xing-he; ZHANG Wan-fu; TIAN Qian-qian; FANG Xin-xin

Volume 18 Issue 4

Dec. 2012

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Article Navigation > Journal of Geomechanics > 2012 > 18(4): 379-388

ZHANG Yi-ming, LI Sheng-li, LI Min, et al., 2012. DEPOSITIONAL FILLING MODEL AND EVOLUTION OF THE SAG IN LACUSTRINE BASIN:A CASE STUDY FROM SHAHEJIE FORMATION IN MAXI SAG, RAOYANG DEPRESSION. Journal of Geomechanics, 18 (4): 379-388.

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DEPOSITIONAL FILLING MODEL AND EVOLUTION OF THE SAG IN LACUSTRINE BASIN:A CASE STUDY FROM SHAHEJIE FORMATION IN MAXI SAG, RAOYANG DEPRESSION

1.
PetroChina Huabei Oilfield Company, Renqiu 062550, China
2.
School of Energy Resources, China University of Geosciences, Beijing 100083, China
3.
Fracturing & Acidizing Technology Research Institute, GWDC Fracturing Company, Panjin 124107, China
4.
Geological Research Center, Bureau of Geophysical Prospecting, Zhuozhou 072751, China

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Received: 2012-05-26
Published: 2012-12-01

Abstract

Abstract

Sag is an important part of the rift lacustrine basin and is the main occurrence area of hydrocarbon source rocks. But in terms of its unique characteristics of sedimentary filling, the buried depth and the reservoir development, the exploratory degree of petroleum in a sag is usually low. Maxi sag is located at Raoyang depression, Jizhong sub-basin and this paper is to discuss the sedimentary filling model and evolution law of Shahejie Formation which is one of the main petroleum exploration intervals. The differences of sedimentary facies type and the depositional model between the steep slope and gentle slope of the sag area were delineated. Furthermore, the depositional characteristics of the Shahejie Formation, the depositional filling models of different tectonic evolution periods of the sag area were analyzed. The sag area of rift basin had the depositional conditions of the reservoir existence, and it's the favorable area for the stratigraphic reservoirs. Therefore, the sag area could be an important area for future petroleum exploration of deep strata in the rift basin.
- sag in rift lacustrine basin,
- Maxi sag,
- depositional filling model,
- sedimentary evolution

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References(17)

References

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