焦石坝页岩气井垂直管流计算新模型  

A New Model of Calculating Vertical Conduit Flow in Shale Gas Wells in Jiaoshiba Region

作　　者：黄灿[1] Huang Can(Sinopec Jianghan Oilfield Company, Wuhan, Hubei 430223, China)

机构地区：[1]中国石化江汉油田分公司,湖北武汉430223

出　　处：《特种油气藏》2017年第3期105-108,共4页Special Oil & Gas Reservoirs

基　　金：中国石化2015年度"十条龙"科技攻关项目"涪陵区块页岩油气勘探开发关键技术"(ZKD0213002);中国石化科研项目"涪陵区块页岩油气有效开发技术研究"(P13053)

摘　　要：涪陵焦石坝页岩气田已经实现商业开发,但一直存在页岩气井井底流压难以准确预测的问题。页岩气井井底流压是页岩气藏动态分析的重要参数,目前计算井底流压的方法较多,每种方法适用的条件又不相同。针对页岩气井井底流压难以准确预测的问题,基于目前焦石坝页岩气井筒垂直多相管流中多相流处于稳态流动,运用气藏工程方法,以焦石坝页岩气井实际生产参数和多相渗流理论为依据,建立了一种页岩气井垂直管柱计算修正新模型。研究成果应用于焦石坝气田6口井的井底压力预测,理论模型计算结果与实际测量值相符较好,平均误差为8.72%。研究结果对页岩气开发有重要意义。The Jiaoshiba shale gas field in Fuling district has realized commercial development,but the bottom-hole flowing pressures in shale gas wells are always hard to be accurately predicted. The bottom-hole flowing pressure in shale gas wells is an important parameter in dynamic analysis of shale gas reservoirs. Currently,there are several methods of calculating bottom-hole flowing pressure,and each method has different applicable conditions.Aiming at the problem that the bottom-hole flowing pressures in shale gas wells are hard to be accurately predicted,based on the situation that the multiphase flow in vertical multiphase conduit flow in shale gas wellbores in Jiaoshiba region is at stable state flowing,gas reservoir engineering method was used to establish a new model of calculating vertical conduit flow in shale gas wells,which is based on actual production parameters and multiphase filtration theory in shale gas wells in Jiaoshiba region. The study results have been applied in predicting the bottom-hole pressures in six shale gas wells in Jiaoshiba region. The calculation results of the theoretical model have higher coincidence with the actual measured data（ the average error is 8. 72%）. The study results have great significance for shale gas development.

关 键 词：垂直管流 页岩气 井底流压 多相流 焦石坝页岩气井 

分 类 号：TE348[石油与天然气工程—油气田开发工程]