摘要
针对致密油藏注水开发过程中动态裂缝的问题,提出了利用“方向性压敏”“方向性相渗”的方法,利用室内物理模拟实验和油田矿场分析资料,建立方向性渗透率与注水压力的动态关系,实现不同方向上两相渗流规律的差异。结合致密油藏非线性渗流机理,建立动态裂缝影响下水驱开发的数值模型,研制全隐式快速解法。提出的新模型能刻画动态裂缝引起的侧向驱替,实现对动态裂缝的数值表征。最后,该方法成功应用于长庆油田WY试验区块,为同类致密油藏开发提供借鉴。
Aiming at the problem caused by dynamic fractures in waterflooding development of tight oil reservoir,methods of“directional pressure sensitivity”and“directional relative permeability”were put forward.According to laboratory experiments and field analysis data,relationship between directional permeability and injection pressure was established,and the two-phase flow law in different directions was obtained.Combined with the non-linear flow mechanism of tight reservoir,the numerical model of waterflooding under the influence of dynamic fracture was established,and a full implicit fast solution method was developed.Results show that the model proposed can describe the lateral displacement of dynamic fractures,and further realize the characterization of dynamic fractures.Finally,the new model has been successfully applied in the WY block,which provides a reference for the development of similar tight reservoirs.
作者
吴义志
马栋
张凯迪
汪洋
姜瑞忠
WU Yi-zhi;MA Dong;ZHANG Kai-di;WANG Yang;JIANG Rui-zhong(Research Institute of Exploration and Development,Sinopec Shengli Oilfield Company,Dongying 257015,China;Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China;Lusheng Petroleum Development Co.Ltd.,Sinopec Shengli Oilfield Company,Dongying 257000,China;State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao 266580,China)
出处
《科学技术与工程》
北大核心
2020年第27期11059-11066,共8页
Science Technology and Engineering
基金
国家科技重大专项(2017ZX05013-002)。
关键词
动态裂缝
方向性压敏
方向性相渗
数值模型
dynamic fracture
directional pressure sensitivity
directional relative permeability
numerical model
