神木气田双3区块气井产量递减规律  

Laws for gas well production decline in Shuang3 block of Shenmu gas field

作　　者：王京舰[1,2] 王一妃 张晗[4] 王德龙[1,2] 左海龙[1,2] 张海波[1,2] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [3]中国石油华北油田分公司采油工程研究院,河北任丘062552 [4]延长油田股份有限公司,陕西延安716000

出　　处：《石油化工应用》2015年第10期16-20,40,共6页Petrochemical Industry Application

基　　金：国家示范工程项目"鄂尔多斯盆地大型低渗透岩性地层油气藏开发示范工程";项目编号:2011ZX05044

摘　　要：神木气田属于典型的致密气藏,目前处于投产初期阶段,生产动态资料有限,分析气井产量递减规律及配产合理性存在一定的困难。从Arps的基本递减规律出发,分析了指数、双曲、调和3种产量递减方式,研究认为,神木气田气井符合双曲递减,且气井递减率并非恒定不变,符合衰减式递减规律。在此基础上,建立了衰减递减方程并推导出产量预测模型,结合气井生产动态资料,不断修正模型参数,提高了模型预测精度。通过对神木气田双3区块4口典型气井生产动态实例应用,表明该分析方法准确、可靠、简单、实用,对国内外同类型气藏产量递减分析具有指导性作用。Shenmu gasfield is a typical tight gas reservoir, which is currently in the initial production stage, includes limited dynamic production data. There are certain difficulties to analyze gas laws of well production decline and the rationality of production. Based on the fundamental decline of Arps, three production decline processes are explained, including exponential, hyperbolic and harmonic decline curves. The studies suggest that its decline belongs to hyperbolic decline and gas well production decline rate is not constant, in line with the decay law of diminishing. On the basis of the above, the attenuation equation is established and the forecasting model is deduced. Combined with the dynamic data of gas well production, the model parameters are continuously modified and the prediction accuracy of the model is improved. The 4 typical gas wells production dynamic application in Shuang3 block of Shenmu gasfield shows that the analysis method is accurate, reliable, simple and practical, and it plays an important role in the types of gas reservoir production decline analysis at home and abroad.

关 键 词：鄂尔多斯盆地 神木气田 气井产量 递减类型 递减率 

分 类 号：TE328[石油与天然气工程—油气田开发工程]