DSC多功能水流测井仪在新疆油田的应用

Application of Multifunction Oxygen Activation Water Flowage Logging Tool DSC in Xinjiang Oilfield

DSC多功能水流测井仪能够精确监测聚合物注入剖面且不受注水方式限制。从该仪器的原理和应用结果看,氧活化测井曲线只与注入量有关。该仪器还可用于确定水井中的漏点位置和漏失量,也可用于测量地层热中子宏观俘获截面即中子寿命。新疆油田16口井的应用资料表明,DSC多功能氧活化测井仪很好地解决了注水方式和结构复杂情况下测量注水剖面的问题;氧活化测井受地层因素影响小,只与套管和油管中流体的流速有关,与地层的参数无关,有较好的应用前景。

A new multifunction water flowage logging tool （DSC） has been developed, which can accurately monitor polymer injection profile of injection well and is not limited by injection mode. Because injection mode is various in Xinjiang Oilfield, conventional logging tools failed to give accurate monitoring result. The principle and application result of DSC reveal that oxygen activation log is a univariable function of injection volume. It can also be applied to determine location and quantity of leakage of injection fluid and to measure thermal neutron macro capture section （neutron lifetime） of formation. Logging data of 16 wells show that DSC can solve injection profile problem with complex injection mode and structure in Xinjiang Oilfield, and oxygen activation log is little influenced by formation factor, it only relates to flow velocity in tubing and casing. So it has good applicable outlook.