The interlayer structure of braid river reservoirs is complex and the interwell prediction is difficult in offshore oil field. Taking CFD11-1 oilfield of NgⅢ sand as an example, based on layer contrasting, the interlayer is divided into muddy interlayer, clay boulder interlayer, and physical interlayer according to lithology. Under the guidance of sedimentary model, we use the geology statistical inversion method to predict the clay boulder interlayer, consistent with the dynamic characteristics of oil production which is used for the prior quality control. The results of this study can objectively reveal the characteristics of interlayer space distribution. Compared with the traditional multi-well comparison and stochastic simulation model, this method is applied to the offshore oil field which is character with wide well space, sparse well network, which has very high application value in predicting the interlayer and deploying of inter-well encryption in the similar oilfield.
Bai, Z., Xing, F. and Li, H. (2012) Sedimentary Features of Fluvial-Dominated Delta in the Kepingtage Fm in Keping Outcrop Area and Their Significance for Petroleum Exploration. Oil and Gas Geology, 33, 217-224.
Feng, C., Bao, Z., Shan, Q., et al. (2012) Single Sand Body Identification in Compound Distributary Channel of Delta Plain: A Case Study from the Fourth Member of Quantou Formation in the Southern Part of Central Fuyu Oilfield. Oil and Gas Geology, 33, 77-83.
Ren, H., Liu, J., Yang, S., et al. (2008) Sandstone Reservoir Microscopic Characteristics of Braiddelta of Hongtai Area in Tuha Basin. Journal of China University of Petroleum (Edition of Natural Science), 32, 12-15.
Li, S., Song, X., Jiang, Y., et al. (2011) Architecture and Remaining Oil Distribution of the Sandy Braided River Reservoir in the Gaoshangpu Oilfield. Petroleum Exploration and Development, 38, 474-482.
Chen, B., Yu, X., Wang, T., et al. (2014) Sedimentary Response to Interaction between Alongslope and Downslope Currents in Daihai Lake, North China. Earth Science—Journal of China University of Geosciences, 39, 399-410.
Sun, T., Mu, L. and Zhao, G. (2014) Classification and Characterization of Barrier-Intercalation in Sandy Braided River Reservoirs: Taking Hegli Oilfield of Muglad Basin in Sudan as an Example. Petroleum Exploration and Development, 41, 112-120. https://doi.org/10.1016/S1876-3804(14)60015-X
Lin, C., Hou, L. and Dong, C. (1997) Geostatistics Applied to the Identification of Interbeds, with Sha-3 Member of Western Liaohe Depression Taken as an Example. Petroleum Geology Experiment, 19, 245-251.
Dang, S., Feng, X. and Yan, J. (2015) Interlayer Research Application in Horizontal Well Development of Thick Bottom Water Reservoir—A Case of Massive Sand in Caofeidian 11-6 Oilfield. Petroleum Geology and Recovery Efficiency, 22, 63-67.
Liu, C., Zhao, C. and Liao, X. (2014) A Refined Anatomy of the Internal Structure of Meandering River Reservoirs under Large Well Spacing in Offshore Oilfields and Its Application. China Offshore Oil and Gas, 26, 58-64.
Xue, Y., Liang, W. and Geng, C. (2011) Control Effect of Inter-Layers on the Migration of Oil and Water in Bottom-Water Reservoirs. Journal of Xi’an Shiyou University: Natural Science Edition, 26, 14-17.