阿尔及利亚扎尔则油田F4层段地层与储层分布规律

郑文波; 吴修利; 邓宏文

doi:10.3799/dqkx.2012.018

Volume 37 Issue 1

Jan. 2012

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Article Navigation > Earth Science > 2012 > 37(1): 181-190

ZHENG Wen-bo, WU Xiu-li, DENG Hong-wen, 2012. Stratigraphy and Facies Distribution of Lower Devonian F4 Unit in Zarzaitine Oilfield, Illizi Basin, Algeria. Earth Science, 37(1): 181-190. doi: 10.3799/dqkx.2012.018

Citation:

ZHENG Wen-bo, WU Xiu-li, DENG Hong-wen, 2012. Stratigraphy and Facies Distribution of Lower Devonian F4 Unit in Zarzaitine Oilfield, Illizi Basin, Algeria. Earth Science, 37(1): 181-190. doi: 10.3799/dqkx.2012.018

Citation:

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Stratigraphy and Facies Distribution of Lower Devonian F4 Unit in Zarzaitine Oilfield, Illizi Basin, Algeria

doi: 10.3799/dqkx.2012.018

ZHENG Wen-bo^{1, 2
,},
WU Xiu-li^{1, 2},
DENG Hong-wen^{1, 2}

1.
School of Energy Resources, China University of Geosciences, Beijing 100083, China
2.
Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism of Ministry of Education, China University of Geosciences, Beijing 100083, China

Received Date: 2011-08-29
Publish Date: 2012-01-15

Abstract

Abstract

Based on cores and well logs, the analyses of tectono-sedimentary setting and facies show that F4 unit formed by submarine fan located in the continental rise. Lower Devonian F4 unit can be divided into upper cycle and lower cycle by a correlating fan-wide marine mud datum called "middle mud", which correspond individual the two-stage of the submarine fan evolution. Each cycle can be subdivided into several sub-cycles by mudstone or thin bedded siltstone, and mudstone which can be traced in the interior fan, thereby establishing the cronostraticframe of F4 unit. In light of the analysis of subfacies and their mechanisms, the reservoir types of F4 unit include braided channel-complex, sedimentary channel and tongue-like body. Facies distribution maps in the precision stratiraphic framework indicate that the submarine fan sediments formed F4 unit were supplied from at least two sources, i.e., northwest and southeast. The genetic type of F4 unit is a multiple point-source sand-rich fan. This study provides not only correlation strategy of submarine fan, but also a reliable geological model for the further development of F4 unit.
- facies,
- stratigrapgy,
- gravity flow,
- F4 unit,
- Illizi basin,
- Algeria,
- sedimentation,

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References(28)

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