底水气藏高速非达西渗流临界产量的一种确定方式  

A Method of Critical Production of Gas Reservoirs with Bottom Water under Non-Darcy Flow

作　　者：邱先强[1] 邱伟 宫红茹[3] 陈艳春[3] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]中石化中原石油工程有限公司井下特种作业公司,河南濮阳457001 [3]中石化中原油田分公司采油五厂,河南濮阳457001

出　　处：《石油天然气学报》2013年第4期126-129,169,共4页Journal of Oil and Gas Technology

摘　　要：底水气藏开发过程中容易产生井底见水的现象,会给气藏的顺利开采带来极大的困难,所以确定气井的临界产量十分重要。一般临界产量计算公式是在达西渗流规律的基础上建立的,但近井地带渗流速度较大,非达西渗流是不可忽略的。针对真实气体高速非达西渗流特征,引用Forchheime渗流方程,建立底水气藏临界产量计算模型,采用四阶龙格-库塔法进行求解,并编制计算程序。计算气井在非达西渗流下的临界产量和水锥形状,给气藏动态分析提供了重要依据。The phenomenon of water production was easily induced during the development of gas reservoirs with bottom water,which braught enormous difficulties to successful development of the gas reservoirs,therefore it was very important to determine the critical production output of gas wells.Conventionally,the critical production rate was derived from the law of Darcy flow,but non-Darcy flow could not be ignored because of the higher flowing velocity of gas through wellbore.Based on non-Darcy flow feature of gas flow and Forchheime percolation equation,a model of critical production rate of bottom water gas reservior is developed,the method of Runge-Kutta equation is used and computer programs are developed.The study result indicates that the calculations of critical production rate and coning water shape can be used as important evidences for analyzing the performance of gas reservoirs.

关 键 词：底水气藏 临界产量 水锥 非达西渗流 

分 类 号：TE328[石油与天然气工程—油气田开发工程]