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| Reservoir diagenetic facies of Bashijiqike Formation in Dabei gas field compartmentalization and quantitative evaluation |
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YANG Ning1, WANG Guiwen2,3, LI Chaoliu4, XIN Yi5, YU Fengdan6, NIAN Tao2,3
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(1.CNPC Greatwall Drilling Company, Beijing 100101, China; ;2.State Key Laboratory of Petroleum Resource and Prospecting in China University of Petroleum, Beijing 102249, China;3.College of Geosciences in China University of Petroleum, Beijing 102249, China;4.RIPED Logging Institutes, Beijing 100083, China;5.Exploration and Development Research Institute of CNPC Tarim Oilfield Company, Korla 841000, China; ;6.Xi 'an Center of Geology Survey,CGS, Xi 'an 710054, China)
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| Abstract: |
| Based on the division principle of diagenetic sequence and diagenetic stage, this paper studied the quantitative division and logging identification of diagenetic facies for Bashijiqike Formation in Dabei area of Tarim Basin using reservoir data of core observations, and methods such as cast thin, cathodoluminescence, SEM and X-ray diffraction. The results show that the diagenetic facies can be divided into four types:compaction density facies, corrosion of unstable components facies, calcareous cementation facies, and structural fracture facies. Compared to previous methods, the method used here with comprehensive diagenetic coefficient as characterization parameters can be a good solution to the problem of quantitative division. Comprehensive diagenetic coefficient can be used in logging data processing to identify diagenetic facies. The results obtained from the method agree well with the core analysis data, and the method is accurate and reliable. |
| Key words: Dabei gas field diagenetic facies diagenetic integrated coefficient quantitative identification logging identification |
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