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Fine Characterization Method for Interlayers in Complex Meander River Sandstone Reservoir: A Case Study of Um7 Sand of C Oilfield in Bohai Bay Area
Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
- 1 Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
- 2 Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
- 3 Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
- 4 Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
- 5 Bohai Oilfield Research Institute of CNOOC Ltd., Tianjin Branch, Tianjin, China
International Journal of Geosciences·Volume 10 (2019)·Pages 405–418·Published 16 April 2019·DOI10.4236/ijg.2019.104023
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Abstract
Taking the Um7 meandering river complex sandstone reservoir of Bohai Bay C oilfield as an example, the interlayer type is defined according to the interlayer lithology and sedimentary genesis, and the identification mode of different types of interlayer is established, and the interlayer comparison of the whole area is carried out by using this mode. The results show that the interlayer can be further defined as the stable distributed interlayer and the randomly distributed interlayer according to the morphology of the interlayer. The distribution characteristics of the two types of interlayers are characterized by the well-to-well comparison method and the data analysis method, and the three-dimensional characterization is carried out. The results more closely reflect the spatial distribution of the interlayer, but also are closer to the underground real situation.
KeywordsMeander River ReservoirInterlayerFine CharacterizationHorizontal Well Development
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