Characteristics and Evaluation of Chang71 Reservoir in Maling Area of Ordos Basin

Abstract

Abstract: This paper presents in?depth studies of Chang?71 reservoir in Maling area of Ordos basin in petrology, physical property and pore throat characteristics by core sampling analysis, well logs, SEM, casting thin section and rock slice data as well as mercury injection test information. The results show that this reservoir is dominated by lithic feldspar sandstone and feldspar lithic sandstone, intergranular pore and feldspar dissolved pore, and characterized by low and ultra?low porosity, ultra?low permeability and strong heterogeneity. The comprehensive classification and evaluation suggest that the major reservoirs belong to Type?Ⅲ and Type?Ⅳ, Type?Ⅰ reservoir is undeveloped, and Type?Ⅱ ones are developed locally in this area

CLC Number:

TE112.24

NING Wenyu1a, 1b, WEN Zhigang1a, 1b, HU Youqing,2. Characteristics and Evaluation of Chang71 Reservoir in Maling Area of Ordos Basin[J]. , 2014, 35(5): 1-1.

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Characteristics and Evaluation of Chang71 Reservoir in Maling Area of Ordos Basin

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