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Petroleum Science >2018,??Issue 3:??451-467 DOI: https://doi.org/10.1007/s12182-018-0239-9

Hierarchy and subsurface correlation of muddy baffles in lacustrine delta fronts: a case study in the X Oilfield, Subei Basin, China Open?Access

文章信息

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作者：Kun Qi, Xiao-Ming Zhao, Li Liu, Yi-Qing Su, Hua Wang, Cheng-Peng Tan and Yi-Ting Sun
作者單位：

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China; School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, China,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China; School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, China,School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, China,School of Geoscience, Yangtze University, Wuhan 430100, Hubei, China,State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China,School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, Sichuan, China and PetroChina Southwest Oil and Gasfield Company, Chengdu 610500, Sichuan, China

投稿時間：2017-11-01
引用方式：Qi, K., Zhao, XM., Liu, L. et al. Pet. Sci. (2018) 15: 451. https://doi.org/10.1007/s12182-018-0239-9

文章摘要

Muddy baffles are one of the major geological factors controlling the underground fluid flow as well as the remaining oil distribution. This study used detailed drilling data from the E1f1 reservoir in the X Oilfield, Subei Basin, China, to investigate the hierarchical muddy baffles developed on lacustrine delta fronts and their precise cross-well correlation. According to the theories on allogenic and autogenic cycles as well as the genesis and scales of muddy baffles, five orders of muddy baffles were classified, which provided various degrees of difficulty when attempting interwell correlation. Under the guidance of a reliable stratigraphic model, the precise cross-well correlation of muddy baffles could be achieved and the key point of establishment of this stratigraphic model was to calculate foreset angles of hierarchical muddy baffles during deposition. During calculation, the relationships between sediment flow direction, higher-order strata dipping direction, well types and well trajectory direction should all be taken into consideration and some other angles (referred to here as h1, h2 and h3) should also be measured. Such new methods of cross-well correlation for hierarchical muddy baffles could greatly reduce the uncertainties and multiple solutions, which in turn would be significant for efficient development and oil recovery enhancement in the reservoirs.

關鍵詞

    Delta front muddy, Baffle, Genetic analysis, Hierarchy division, Strata correlation