石油钻采工艺Issue(3)：59-64,6.DOI:10.13639/j.odpt.2014.03.015
确定气水同产水平井流入动态关系的新方法
A new method for ascertaining the inlfux dynamic relation in water-gas producing horizontal wells
摘要
Abstract
For the two phases lfow of gas and water, gas will escape from the water or water will evolve from the gas, which both changes the gas reservoir lfow characteristics. Based on the basic theory of permeation lfow mechanics and the conformal transforma-tion mathematical method, the 3D lfow in horizontal wells is simpliifed into the lfow in horizontal and vertical planes. Simultaneously, considering the process that the gas and water mutually dissolve and volatilize in the formation, the gas-water two phase lfow mathemati-cal model for horizontal well is inferred, and the gas-water productivity equation for horizontal wells is established. By referencing the auxiliary equation of relative permeability and the equation of material balance pressure drop of water-drive gas reservoirs, the compre-hensive lfow model for gas-water producing horizontal wells is built. By automatic iftting analysis of gas production, water production, tubing and casing pressure of gas wells, the integrated lfow model parameters of gas-water producing horizontal wells can be obtained, and the gas-water productivity equation, gas-water lfow curves, probable reserves in individual wells and water cut intensity can also be obtained. This new method avoids the limitation of relying on ifeld test to determine the gas well productivity and provides a new theoretic method for deliverability and dynamic analysis for gas-water lfow wells.关键词
水平井产能/气水两相渗流/水侵/动态储量/自动拟合Key words
deliverability of horizon well/gas-water lfow/water invasion/dynamic reserves/auto-matching分类
能源科技引用本文复制引用
谭晓华,李晓平,刘从领,余燕,宋昭杰,袁淋..确定气水同产水平井流入动态关系的新方法[J].石油钻采工艺,2014,(3):59-64,6.基金项目
国家杰出青年科学基金“油气渗流力学”资助项目（编号51125019）。 （）
