| Author's Name: Shang Kai, Guo Na, Cao Zicheng, Han Jun, Xu Qinqi |
| Institution: Northwest Oilfield Branch Company, SINOPEC |
| Abstract: |
| Based on the analysis of core observation, rock thin sections, logging data and a variety of testing data of the Middle Ordovician Yijianfang Formation on the northern slope of middle Tarim Basin, reservoirs are mainly distributed in grain limestone of intra-platform shoals. The main reservoir types in this area are fractured reservoirs, fractured-vuggy reservoirs and pore-cave reservoirs. The controlling factors of reservoir genesis are sedimentary microfacies, faults and dissolution. The carbonate shoals provide the early material basis for the later selective dissolution. Meteoric-water dissolution and burial dissolution improved the properties of reservoir to some extent. The multi-period activities of the NE-trend faults played a key role in controlling the high quality reservoir. |
| Keywords: Carbonate rock; Reservoir; Yijianfang Formation; Ordovician; Tarim Basin |
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投稿时间：
2015-04-07 |
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