石油钻采工艺Issue(6)：65-68,4.DOI:10.13639/j.odpt.2014.06.016
苏里格低渗气田压裂井拟稳态期产量预测方法
Production prediction method for pseudo steady period of fractured well in low-permeability Sulige Gas Field
摘要
Abstract
At present, the computing model for dynamic prediction of fractured gas well production is mostly for steady state seep-age or for unsteady state seepage of inifnite formation, and rarely involved in production dynamic prediction method during pseudo steady lfow period. For this reason, according to seeping process of gas in formations of fractured gas well, ifrst based on the fact that, in pseudo steady lfow period derived from mirror relfection principle controlled by boundary, there is a vertical fracture of ifnite conduc-tivity capacity in the gas reservoir in the well, this paper presents a method for dynamic prediction of fractured gas well production in pseudo steady lfow period based on a general expression of dimensionless pressure solution, and then gives the method for determining the time when pseudo steady lfow begins to occur in rectangular bounded gas reservoir. The calculation results show that the fractured wells in Sulige low-permeability gas ifeld are in boundary-controlled pseudo steady seepage period in two to four months after being put into production, and the conductivity capacity required by single wing fracture length of 150 m is about 30 D·cm. The method for dynamic prediction of production presented in this paper can also be used to optimize the hydraulic fracture parameters and fracturing size in other low permeability gas ifelds.关键词
压裂气井/封闭气层/拟稳态流/裂缝参数/产量预测Key words
fractured gas well/bounded gas reservoir/pseudo steadylfow/fractureparameters/production prediction分类
能源科技引用本文复制引用
刘蜀知,孙艾茵,李达,关欣,孟凡龙..苏里格低渗气田压裂井拟稳态期产量预测方法[J].石油钻采工艺,2014,(6):65-68,4.基金项目
中石油重大科技专项“致密气藏开发重大工程技术研究”（编号2010E-23）。 （）
