Comprehensive Evaluation of Chang 6 Reservoir from Yanchang Formation in Ganguyi Oil Area, Ordos Basin

ZHU Jinjin; FU Chaofeng; YANG Hailong; XIN Jiang; MA Dongsheng; WANG Tao; QU Weidong

doi:10.19751/j.cnki.61-1149/p.2019.01.015

Northwestern Geology > 2019 > 52(1): 166-175. > DOI: 10.19751/j.cnki.61-1149/p.2019.01.015

ZHU Jinjin, FU Chaofeng, YANG Hailong, et al. Comprehensive Evaluation of Chang 6 Reservoir from Yanchang Formation in Ganguyi Oil Area, Ordos Basin[J]. Northwestern Geology, 2019, 52(1): 166-175. DOI: 10.19751/j.cnki.61-1149/p.2019.01.015

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Comprehensive Evaluation of Chang 6 Reservoir from Yanchang Formation in Ganguyi Oil Area, Ordos Basin

1. School of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China;
2. Yanchang Oil Field Co., Ltd. Pagoda oil production plant, Yan'an 716000, Shaanxi, China;
3. Petro China CBM Institute of Engineering Technology, Xi'an 710003, Shaanxi, China

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Received Date: December 05, 2017
Revised Date: July 18, 2018
Available Online: July 28, 2022
Published Date: March 04, 2019

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Abstract

Abstract

By using the advanced techniques of constant velocity mercury pressure and NMR fluid saturation testing, combined with conventional reservoir physical analysis, the characteristics of petrology, pore, porosity and permeability distribution of Yanchang Chang 6 sandstone reservoir in Ganguyi oil area, Ordos Basin have been systematically studied, and then the comprehensive classification and evaluation of Chang 6 reservoir in Ganguyi oil area have been made in this paper. The results show that the lithology of Chang 6 reservoir in Ganguyi oil area is dominated by fine feldspar sandstone. The reservoir space types mainly consist of residual intergranular pore and dissolution pore. The reservoir of Chang 6 reservoir in Ganguyi oil area is dominated by microlarynx, and the flow property of this reservoir is mainly controlled by the throat size. The saturation of movable fluid in the reservoir is on the low side. On the whole, the Chang 6 reservoir in Ganguyi oil area is characterized by low porosity and ultra-low permeability. The reservoir of Chang 6 reservoir in Ganguyi oil area has been evaluated by the geological parameters, such as storage coefficient, formation coefficient and flow zone index. It is considered that Chang 6 reservoir in Ganguyi oil area can be divided into 4 types, and the type Ⅲ with poor reservoir is the main reservoir.
- Ganguyi oil area,
- Yanchang Formation,
- reservoir feature,
- reservoir evaluation

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References

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Comprehensive Evaluation of Chang 6 Reservoir from Yanchang Formation in Ganguyi Oil Area, Ordos Basin

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