西安石油大学学报（自然科学版）2024，Vol.39Issue(4)：27-33,7.DOI:10.3969/j.issn.1673-064X.2024.04.004
海上疏松砂岩井间优势通道识别与表征方法
Identifying and Characterizing Method of Dominant Channels Between Wells in Offshore Unconsolidated Sandstone Oilfields
摘要
Abstract
Based on the inter-well connectivity theory,taking into account the degree and proportion of permeability difference of inter-well connectivity unit,a permeability non-uniformity coefficient was proposed and established,achieving quantitative characterization of dominant inter-well connectivity units.A classification standard for inter-well dominant connectivity units was established based on mod-el analysis and actual oilfield data.This method was applied to the Bohai S unconsolidated sandstone oilfield.The result shows that as the permeability non-uniformity coefficient increases,the cumulative oil production continues to decrease,the water-free oil recovery pe-riod continues to shorten,and the phenomenon of uneven injection intensifies.When the permeability non-uniformity coefficient is grea-ter than 3,the single direction component of the injection well can reach 70％,corresponding to a 75％reduction in the water-free oil recovery period of the production well.The difference between the calculated permeability of the actual block and the tracer interpreta-tion permeability is 4.5％,and the calculated permeability is consistent with the oilfield dynamic test result.Dominant connectivity units P07-P01,P07-P08 and P09-P04 in the study block were selected as subsequent profile-control plugging targets.关键词
优势通道/渗透率不均匀系数/分级表征/疏松砂岩Key words
dominant channel/permeability non-uniformity coefficient/classification characterization/unconsolidated sandstone分类
能源科技引用本文复制引用
刘玉洋,未志杰,赵辉,陈勇军,雍唯,张健..海上疏松砂岩井间优势通道识别与表征方法[J].西安石油大学学报（自然科学版）,2024,39(4):27-33,7.基金项目
国家自然科学基金面上项目"海上陆相油田非均衡化学驱大幅提高采收率应用基础研究"(52074347) （52074347）
中海油有限公司重大科技课题"海上油田化学驱规模化应用关键技术"(KJGG2021-0504) （KJGG2021-0504）
