摘要
为评价CO2驱开发效果,需了解各层的吸气量,通过对现有的吸气剖面测井技术开展适应性评价,优选出合适的吸气剖面测井技术。五参数吸气剖面测井技术只能定性确定主要吸气层;脉冲中子氧活化测井技术适应于所有管柱类型,可以定量解释各层的吸入量,但低流速条件下影响测试精度;集流伞涡轮流量测井技术只适应于喇叭口位于注入层以上的笼统注入井,通过集流效应提高流体流动速度,可以提高低流速条件下末端吸气能力弱的注入层的解释精度。对比4口注入井的脉冲中子氧活化和集流伞涡轮流量测井吸气剖面解释结果,集流伞涡轮流量测井结果较脉冲中子氧活化测井结果解释吸气厚度比例提高了15.2%。集流伞涡轮流量测井测试吸气剖面结果可靠准确,在喇叭口位于注入层以上的笼统注入井吸气剖面测试中可以推广应用。
We need to know CO_2 injection quantity of each layer to evaluate the development effect of CO_2 flooding,a suitable logging technology of CO_2 injection profile is optimized through the adaptive evaluation of existing suction profile logging technology.The logging technology of fiveparameter suction profile can only determine the main suction layer qualitatively.Logging technology of pulsed neutron oxygen activation which can be adapted to all types of well completion can interpret the soakage of each layer quantitatively,but the test accuracy is affected under the low flow conditions.Through the manifold effects to develop the fluid flow velocity,logging technology of basket flowmeter turbine mass-flow rate can improve interpretation accuracy of injection layer whose inspiratory capacity is weak under the low flow conditions.The result of basket flowmeter turbine mass-flow rate logging increases 15.2% for inspiratory thickness ratio compared with pulsed neutron oxygen activation log through 4 injection wells data,it can be used in the aspiration section test of general injection wells whose bellmouth located above the injection layer.
出处
《测井技术》
CAS
CSCD
2016年第3期352-355,共4页
Well Logging Technology
基金
中国石油天然气股份有限公司"十二五"科技项目(2011B-1102)
关键词
生产测井
吸气剖面
集流伞
脉冲中子氧活化
涡轮流量
production logging
injection profile
basket flowmeter
pulse neutron oxygen activation
turbine mass-flow rate
