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RESERVOIR CHARACTERISTICS OF CHANG 8 OF YANCHANG FORMATION (TRIASSIC) INZHENBEI GAREA,ORDOS BASIN

Y Wang

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Abstract

The Chang 8 reservoir in Zhenbei area in Ordos basin is an important oil-bearing reservoir bed.In this paper,the characteristics of reservoir strata was summarized and evaluated on the basis of petrological and physical features.The texture of porosity and the controlling features of reservoir strata.It was shown that the lithotypes were the medium-fine granular arkose and lithic arkose which had the characteristics of low compositional maturity,middle-high texture maturity,low porosity and permeability.The reservoir developed interparticle pore,solution pore and intercrystal pore.The main throat types was the medium throat and fine throat.The results give significant implications on oilfield development.

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What this paper is about

The Chang 8 reservoir in Zhenbei area in Ordos basin is an important oil-bearing reservoir bed.In this paper,the characteristics of reservoir strata was summarized and evaluated on the basis of petrological and physical features.The texture of porosity and the controlling features of reservoir strata.It was shown that the lithotypes were the medium-fine granular arkose and lithic arkose which had the characteristics of low compositional maturity,middle-high texture maturity,low porosity and permeability.The reservoir developed interparticle pore,solution pore and intercrystal pore.The main throat types was the medium throat and fine throat.The results give significant implications on oilfield development.

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Available abstract

The Chang 8 reservoir in Zhenbei area in Ordos basin is an important oil-bearing reservoir bed.In this paper,the characteristics of reservoir strata was summarized and evaluated on the basis of petrological and physical features.The texture of porosity and the controlling features of reservoir strata.It was shown that the lithotypes were the medium-fine granular arkose and lithic arkose which had the characteristics of low compositional maturity,middle-high texture maturity,low porosity and permeability.The reservoir developed interparticle pore,solution pore and intercrystal pore.The main throat types was the medium throat and fine throat.The results give significant implications on oilfield development.

Key concepts: Geology, Maturity (psychological), Structural basin, Porosity, Permeability (electromagnetism), Geomorphology, Petroleum reservoir, Texture (cosmology)

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RESERVOIR CHARACTERISTICS OF CHANG 8 OF YANCHANG FORMATION (TRIASSIC) INZHENBEI GAREA,ORDOS BASIN — Research Paper | ScholarLens