摘要
对于水驱砂岩油藏,油水井间流体通道参数可为调剖提供依据。将地层看做一个岩心,利用化学示踪剂的方法,由达西公式推导出流体通道渗透率的计算公式。通过油井产出曲线的波峰数和示踪剂到达时间,得到注水井与油井间的通道数和通道相关参数;并按渗透率将流体通道分为渗流通道、窜流通道和似管流通道。按照通道分类,定量封堵窜流通道和似管流通道。将流体通道描述及定量封堵技术应用于胜利油区新立村油田永8-7断块永8-61井组,对应8口油井检测出27条通道,其中有5条窜流通道,根据窜流体积实施定量封堵后,井组综合含水率下降了2.3%,日增油量为18.6t,累积增油量为7617t,取得了显著的效果。
For the water flooding sandstone reservoir,parameters of flow channels between producer and injector provide the basis for ascertaining the amount of agent for profile control.Regarding the stratum as a core,and using chemical tracer method,we de-sign formulas of flow channels' permeability that is deduced from Darcy's law.The channel number and parameters of channel are obtained by the peak value of oil production curve and the arriving time of tracers.According to value of permeability,the flow channels can be divided into seepage channel,crossflow channel and tube-like channel.On the basis of channel's classification,the Crossflow channel and the tube-like flow channel are quantitative plugged.The description of flow channels and quantitative block technology is used in the performance analysis of well Yong8-61 located on Yong8-7 fault-block in Xinglicun oil field.Twenty-seven channels are detected for 8 wells,and there are 5 crossflow channels.Based on the crossflow volume,the quantitative block technique is applied.The water cut of well group is decreased by 2.3% ,and daily oil production increased by 18.6t,and cumulative increment of oil up to 7617 t,a remarkable field performance.The technique has the advantages of less system error,high accuracy,few parameters,low inputs requirement,and simple calculation.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2012年第1期104-106,118,共3页
Petroleum Geology and Recovery Efficiency
关键词
水驱开发油藏
流体通道描述
达西公式
化学示踪剂
定量封堵
water flooding reservoir
fluid channel description
Darcy's law
tracers
quantitative plugging
