特低渗透油藏压裂水平井与直井联合开采井网产能预测新方法  

A New Methd of Predicting Productivity of Combined Fractured Horizontal Well and Vertical Well for Ultra-low Permeability Reservoir

作　　者：徐庆岩[1] 于靖之 蒋文文[3] 杨正明[4] 吴向红[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油天然气股份有限公司吐哈油田分公司巨东采油厂,鄯善838202 [3]中国专利信息中心,北京100088 [4]中国石油勘探开发研究院廊坊分院,廊坊065007

出　　处：《科学技术与工程》2014年第18期30-34,共5页Science Technology and Engineering

基　　金：国家油气重大专项(2011ZX0513-006)资助

摘　　要：压裂水平井与直井联合开采是有效开发特低渗透油藏的主要手段。压裂水平井产能是决定特低渗油藏开发成败的关键技术指标;但目前能够准确快速获得特低渗透油藏水平井与直井联合开采的压裂水平井产能的方法很少。基于此,采用当量井径模型与叠加原理结合,联合经典面积井网的产能计算公式;并考虑特低渗透油藏非线性对渗透率进行修正,最终得到压裂直井与压裂水平井联合井网的产能计算公式。最后通过实例验证,该公式具有计算简单、结果可靠的特点,适合现场产能快速评价。Fractured horizontal well combined with vertical well is an effective method to develop ultra-low permeability reservoir. And the productivity of fractured horizontal well is the key factor which can determine whether the ultra-low permeability reservoir could be developed effectively. However, there are rare methods which can be used to calculate the productivity rapidly and precisely. Therefore, under such a circumstance, it is imperative that researchers should make out new effective methods to improve current condition. To solve this problem, based on equivalent radius model and superposition principle, also with the incorporation of classic areal well pattern productivity formula and nonlinear seepage characteristic of ultra-low permeability reservoir, a new method of predicting productivity of combined fractured horizontal well and vertical well for ultra-low permeability reservoir is obtained. The final practical application shows that this method has convenient operation reliable results. Moreover, this predicting method is suitable for field application and rapid evaluation.

关 键 词：特低渗透 压裂水平井 联合井网 产能预测 当量井径 非线性渗流 

分 类 号：TE348[石油与天然气工程—油气田开发工程]