EXISTENCE AND SIGNIFICANCE OF MICROUMBONES IN KARST BASIN: SAMPLE FROM ORDOVICIAN KARSTIC PALEOGEOMORPHY IN ORDOS BASIN

LIU Hong-jun,JIA Ya-ni,LI Zheng-hong,ZHENG Cong-bin

doi:10.11764/j.issn.1672-1926.2006.04.490

Natural Gas Geoscience >

2006 , Vol. 17 >Issue 4: 490 - 493

DOI: https://doi.org/10.11764/j.issn.1672-1926.2006.04.490

EXISTENCE AND SIGNIFICANCE OF MICROUMBONES IN KARST BASIN: SAMPLE FROM ORDOVICIAN KARSTIC PALEOGEOMORPHY IN ORDOS BASIN

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1.Xi’an Petroleum University,Xi’an 710065,China;2.Research Institute of Exploration and Development of Changqing Oil Field,Xi’an 710021,China

Received date: 2006-01-01

Revised date: 2006-04-15

Online published: 2006-08-20

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Abstract

Karstic geomorphies are consisted of karstic upland,slope and depression.Karst basins are considered mixed water area,in which pore spaces are sorely filled and reservoir properties are unsavoury.With ingoing exploration,good reservoir beds which are located in microumbones are found in some of karst depressions.Combined with thickness map of benxi formation of Carboniferous and distributed relation map of basement rift and magmatite,chronic activity of basement rif leads to the formation of microumbones.

Key words： Ordos basin; Ordovician; Paleogeomorphy; Karstic basin; Microumbones; Reservoirs.

Cite this article

LIU Hong-jun,JIA Ya-ni,LI Zheng-hong,ZHENG Cong-bin . EXISTENCE AND SIGNIFICANCE OF MICROUMBONES IN KARST BASIN: SAMPLE FROM ORDOVICIAN KARSTIC PALEOGEOMORPHY IN ORDOS BASIN[J]. Natural Gas Geoscience, 2006 , 17(4) : 490 -493 . DOI: 10.11764/j.issn.1672-1926.2006.04.490

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