西南石油大学学报（自然科学版）2024，Vol.46Issue(4)：97-106,10.DOI:10.11885/j.issn.1674-5086.2024.02.01.02
超深层多重介质储层径向非稳态水侵模型
A Radial Unsteady Water Invasion Model for Ultra-deep Multi-porosity Reservoirs
摘要
Abstract
In order to further understand the water invasion law of ultra-deep multi-porosity reservoir,the radial unsteady water invasion model for ultra-deep multi-porosity reservoirs was established in dual-porosity reservoirs and tri-porosity reservoirs by assuming that the aquifer was infinite or closed.Mathematical methods such as Laplace transform were used to solve the model,and the cumulative water invasion solution in Laplace space was obtained.Then the cumulative water invasion solution in real space was obtained through numerical inversion.The water invasion curves of infinite aquifer and closed aquifer in multi-porosity reservoirs were programmed and their differences were compared.Then the parameter sensitivity of the water invasion curves in multi-porosity reservoir was analyzed.Finally,the model was verified and analyzed by using the field data of ultra-deep fractured-vuggy reservoir in Tarim Basin combined with the principle of material balance.The results show that the water invasion curve of the infinite aquifer keeps rising,and the water invasion curve of the closed aquifer keeps stable in the later stage and there is a"water invasion step".Water radius and storativity ratio mainly affect the position of water invasion curve.The inter-porosity flow coefficient mainly affects the time of"water invasion step".The water invasion model can accurately calculate the amount of cumulative water invasion.The water invasion model established and the water invasion curves drawn can provide theoretical reference for the study of water invasion mechanism in ultra-deep multi-porosity reservoirs.关键词
超深层/多重介质储层/非稳态水侵模型/水侵曲线/水侵台阶Key words
ultra-deep reservoirs/multi-porosity reservoirs/unsteady water invasion model/water invasion curve/water inva-sion step分类
能源科技引用本文复制引用
鲜波,朱松柏,周杰,范秋海,聂延波..超深层多重介质储层径向非稳态水侵模型[J].西南石油大学学报（自然科学版）,2024,46(4):97-106,10.基金项目
中国石油天然气股份有限公司攻关性应用性科技专项(2023ZZ14YJ04) （2023ZZ14YJ04）
