摘要
注入井压降试井是获取储层物性特征参数重要方法之一。注入井随注入时间增加、注入介质变化及分注工艺推广,储层物性层间差异增大,造成注入井压降曲线特征复杂化。分析物性层间差异对压降曲线特征的影响,用分层段压降试井解释参数,对比分析全井笼统压降曲线特征和物性参数,通过高有效渗透率储层物性验证全井压降曲线物性特征。利用注入剖面吸水厚度校正改善压降试井参数,利用相对吸水量和压降解释结果估算吸水层物性参数。
Pressure drop test of injection well is one of the important methods to obtain reservoir physical characteristics parameters.With the increase of the injection time,the change of the injection medium and the extension of the injection process,the difference of the reservoirs physical properties,resulting in the complexity of the characteristics of the pressure drop curve of the injection well.Theoretically analyzed is the influence of the difference of physical properties between layers on the characteristics of pressure drop curve.compared and analyzed are the characteristics of general pressure drop curve and physical properties of the whole well by interprets the parameters of pressure drop test in stratified section.Verified are characteristics of the whole well pressure drop curve by the physical properties of the reservoir with high effective permeability.The injection profile’s water absorption thickness is used to correct and improve parameters of pressure drop well test.
作者
赵立安
赵跃华
杨玲
修春红
ZHAO Lian;ZHAO Yuehua;YANG Ling;XIU Chunhong(Well Testing Company, Dagang Oilfield, PetroChina, Tianjin 300280, China)
出处
《测井技术》
CAS
2020年第3期283-287,共5页
Well Logging Technology
关键词
压降曲线
分层
特征参数
校正
pressure drop curve
layering
characteristic parameter
correction
