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2011•Acta Geologica SichuanRequires access

Pore Structure and Influence Factors of the Chang 6 Reservoir in the Zhengzhuang Oilfield,Ordos Basin

Sun Pei

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Abstract

The pore structure of the Chang 6 reservoir in the Zhengzhuang Oilfield,Ordos basin is studied by means of SEM and casting thin sections.The reservoir is characterized by low porosity consisting mainly of primary remnant intergranular pores and secondary solution pores,and very low permeability.Medium and small pores are main reservoir space.Fine throat,tiny throat and mini throat are basic percolating channel.The pore structure is controlled by sedimentation and diagenesis,specially,cementation and solution.

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The pore structure of the Chang 6 reservoir in the Zhengzhuang Oilfield,Ordos basin is studied by means of SEM and casting thin sections.The reservoir is characterized by low porosity consisting mainly of primary remnant intergranular pores and secondary solution pores,and very low permeability.Medium and small pores are main reservoir space.Fine throat,tiny throat and mini throat are basic percolating channel.The pore structure is controlled by sedimentation and diagenesis,specially,cementation and solution.

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Available abstract

The pore structure of the Chang 6 reservoir in the Zhengzhuang Oilfield,Ordos basin is studied by means of SEM and casting thin sections.The reservoir is characterized by low porosity consisting mainly of primary remnant intergranular pores and secondary solution pores,and very low permeability.Medium and small pores are main reservoir space.Fine throat,tiny throat and mini throat are basic percolating channel.The pore structure is controlled by sedimentation and diagenesis,specially,cementation and solution.

Key concepts: Geology, Diagenesis, Cementation (geology), Structural basin, Porosity, Permeability (electromagnetism), Intergranular corrosion, Mineralogy

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