缝洞型油气藏室内试井模拟实验  

The Indoor Simulation Experiment of Well Testing in Fractured-vuggy Reservoir

作　　者：熊钰 滕鹏 叶海峰 牛新年[2] 蔡明金[2] XIONG Yu;TENG Peng;YE Hai-feng;NIU Xin-nian;CAI Ming-jin(College of Petroleum and Natural Gas Engineering,Southwest Petroleum University, Chengdu 610500,P.R.China;Tarim Oilfield Company,Korla 841000,P.R.China)

机构地区：[1]西南石油大学石油与天然气工程学院,成都610500 [2]塔里木油田分公司,库尔勒841000

出　　处：《科学技术与工程》2017年第29期75-79,共5页Science Technology and Engineering

摘　　要：针对塔里木油田缝洞型碳酸盐岩油气藏,运用相似理论,在室内采用大型中间容器模拟溶洞,填砂细管模拟裂缝,设计了单溶洞、单缝单洞、串联双溶洞和串并复合溶洞室内实验模型,并使用高精度压力监测仪和流量计分别记录节点压力与气体流量,根据计算机采集的压力恢复数据,绘制压力恢复试井的双对数曲线。实验结果表明,双对数曲线大致反映了3个流动过程,即前期井储效应过程、裂缝流动过程和溶洞流动过程,其中凹子反映了压力波在溶洞内的来回扰动过程。因此,该室内模拟实验能够准确反映流体在裂缝和溶洞中的流动情况,从而为现场试井解释提供可靠依据。A large middle container was adopted to simulate the cave,and sand filling tube was applied to simulate the crack with similarity theory in the Tarim Oilfield seam cavern type carbonate reservoir.Then single cavern model,a crack and a cave model,parallel double cavern model and series parallel model,were designed with the cave and crack.After that the experiments were conducted with the models using a high precision pressure monitor to record the pressure and flow rate.According to the recovery data of pressure collected by computer,the double logarithm curve of pressure recovery test was drawn.The experimental results showed that the double logarithmic curve can reflect three flowing processes,namely the process of well storage effect process,the flow of crack,the flow of cave,and the caviton reflected the disturbance of pressure wave in the concave cavity.Therefore,the indoor simulation experiment can accurately reflect the flow of fluid in the cracks and caves and provide a reliable basis for well testing interpretation.

关 键 词：碳酸盐岩 规模溶洞 裂缝 试井 实验模拟 

分 类 号：TE344[石油与天然气工程—油气田开发工程]