Reservoir characteristics of Donghe well No.1 in Tarim Basin

Based on the techniques of X-ray diffraction analysis, identification of the thin sections of core cast, phys- ical analysis and scanning electron microscopy analysis, this paper studied the reservoir characteristics of the Carboniferous strata in Donghe well No.1 of Tarim region. The results show t...

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Bibliographic Details
Published in:International journal of mining science and technology 2014-09, Vol.24 (5), p.719-724
Main Authors: Liao, Taiping, Hu, Jingjing, Lai, Fuqiang, Duan, Yonggang
Format: Article
Language:English
Subjects:
Carboniferous system
Features of pore throats
Physical characteristics
Sandstone reservoir
Tarim Basin
X射线衍射分析
储层特征
塔里木地区
塔里木盆地
孔隙率
扫描电子显微镜分析
油气成藏特征
物理分析
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Summary:Based on the techniques of X-ray diffraction analysis, identification of the thin sections of core cast, phys- ical analysis and scanning electron microscopy analysis, this paper studied the reservoir characteristics of the Carboniferous strata in Donghe well No.1 of Tarim region. The results show that the reservoir lithology is mainly the fine-grained quartz sandstone with ferrocalcite and pyrite, mud cement-based, the permeability concentrated in 5-40 × 10-3 μm2, a small part of the high permeability up to 150-327 ×10-3 μm2 and porosity ranged from 10% to 20%. The most part of the reservoirs is low perme- ability with a small part of the layer in moderate-high permeability. The types of reservoir space include intergranular pores, intra particle-molding pores, micro-pores and cracks, which mainly are intergranular pores with the pore diameter of 15-200 μm, 95.5μm on average. And the types of the throats are comolex with the main tvne of constricted l：hroats in this area and large contribution to the permeability.
ISSN:2095-2686
DOI:10.1016/j.ijmst.2014.07.001