Characteristics of Chang8 Oil Reservoir and Distribution of Oil Reservoirs in Maling Oilfield,Ordos Basin

MA  Chun-Lin, WANG  Rui-Jie, LUO  Bi-Lin, DUAN  Wen-Biao, FENG  Chun-Yan, WANG  Chao-Ping, SUO  Yu-Xia, QIANG  Zhen-Zhen

doi:10.11764/j.issn.1672-1926.2012.03.514

Natural Gas Geoscience >

2012 , Vol. 23 >Issue 3: 514 - 519

DOI: https://doi.org/10.11764/j.issn.1672-1926.2012.03.514

Characteristics of Chang8 Oil Reservoir and Distribution of Oil Reservoirs in Maling Oilfield,Ordos Basin

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1.No.2 Oil Production Company of Changqing Oilfield Company of CNPC,Qingcheng 745100,China;
2.Institute of Exploration and Development,Changqing Oilfield Company of CNPC，Xi′an 710021,China

Received date: 2011-03-22

Revised date: 2012-02-21

Online published: 2012-06-10

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Abstract

Chang\|8 member of upper Triassic Yanchang Formation in the Maling oilfield of Ordos basin is an important supplementary target for oil exploration and exploitation in the future.The top of Chang-8 oil reservoirs with low permeability and porosity is mainly composed of sandstones,considered as low andultra-low permeability reservoir.The reservoir is largely distributed in the sites of underwater distributary channel development.During diagenesis process,the dissolution improved obviously the physical property of reservoir.Chang-8 oil reservoirs are mainly distributed in the underwater distributary channels or their flank having sandstone development,with relatively good physical property of reservoir.Meanwhile,there is a positive correlation between saturation and solution pore of reservoir,indicating that the formation of Chang-8 oil reservoir would be closely related with distribution and property of sandstone reservoirs.Sand body of underwater distributary channel of delta front is near the oil source rocks and surrounded by both sides of mudstone.Thus,the underwater distributary channel is the favorable facies belt for oil accumualtion.

Key words： Ordos basin; Maling oilfield; Chang-8 oil member; Sandstone reservoir; Oil reservoir.

Cite this article

MA Chun-Lin, WANG Rui-Jie, LUO Bi-Lin, DUAN Wen-Biao, FENG Chun-Yan, WANG Chao-Ping, SUO Yu-Xia, QIANG Zhen-Zhen . Characteristics of Chang8 Oil Reservoir and Distribution of Oil Reservoirs in Maling Oilfield,Ordos Basin[J]. Natural Gas Geoscience, 2012 , 23(3) : 514 -519 . DOI: 10.11764/j.issn.1672-1926.2012.03.514

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