大庆石油地质与开发2026，Vol.45Issue(4)：88-95,8.DOI:10.19597/J.ISSN.1000-3754.202503042
基于压力差转换系数的单井控制储量计算新方法
A new method for calculating single-well controlled reserves based on pressure difference conversion coefficient
摘要
Abstract
In order to clarify the reserves within the fluid flow range controlled by a single well,a single-well con-trolled reserves calculation new method based on pressure difference conversion coefficient is established by defin-ing pseudo-pressure difference and pseudo-pressure at adjacent moments,combined with the variation law of natu-ral gas high-pressure physical properties and material balance equation.The results show that the error between this method and material balance method is 0.004%,with high accuracy,and the calculation parameters are easier to obtain.The calculated value of single-well controlled reserves increases rapidly with the increase of production time before gradually stabilizing.When the selection time exceeds 300 days until gas well production begins to decline,and the time interval is between 5-10 days,this method has high accuracy and good stability.In conditions of same pressure,the smaller the power exponent β of pressure difference conversion coefficient is,the smaller the high-pressure physical property parameter μZ is(where μ is gas viscosity and Z is gas deviation factor),and the greater the single-well controlled reserves are.The research provides great significance for evaluating geological energy sta-tus,reserve production and oil recovery variation of gas reservoirs.关键词
控制储量/拟压力差/高压物性/物质平衡方程/压力差转换系数Key words
controlled reserves/pseudo pressure difference/high-pressure physical properties/material balance equation/pressure difference conversion coefficient分类
能源科技引用本文复制引用
白慧芳,倪军,张磊..基于压力差转换系数的单井控制储量计算新方法[J].大庆石油地质与开发,2026,45(4):88-95,8.基金项目
陕西省自然科学基础研究计划项目"多层合采气井全阶段产能劈分及预测研究"(2025JC-YBMS-644) （2025JC-YBMS-644）
陕西省重点研发计划项目"数据机理混合驱动的致密气储层智能评价技术"(2023-YBGY-308). （2023-YBGY-308）
