注硼中子寿命测井的应用研究

注硼中子寿命测井是一项水淹层测井新技术，对老油田的产层分析、评价剩余油含量等方面发挥了重要的作用，具体是向地层中注入高俘获截面的硼酸，从而使其也适用于低矿化度地区。对于低孔、低渗储层，由于束缚水和残余油的含量很高，可动流体所占比例很少，在定量求取剩余油饱和度时，具有不同于高孔、高渗储层的新特点。结合测井实例，着重介绍注硼中子寿命测井在产层评价、剩余油含量、作业对象确定等方面的应用，以及取得的良好的地质效果，使其能够在油田开发过程中发挥更加重要的作用。

Boron Injection Neutron Lifetime Logging

Boron-injection neutron lifetime logging is a new logging technology for water-flooded zone. In recent years,it plays an important role in analysis and evaluation of producing formations, estimation of the residual oil in many oldfields in China, which is generally used in cased hole for determining remaining oil saturation of formation with high salinity. Due to injection of H3Bo3 with large neutron capture cross section, BNLL is also adaptable to formation with low salinity. For formations with low porosity and low permeability,the saturation of irreducible water and remaining oil are high,but movable fluid is very low. Thus the way of calculating remaining oil saturation for formation with low porosity and low permeability isdifferent from formation with high porosity and high permeability and has its own characteristics. Combined with the logging example, mainly introduce that BNLL is applied in analysis and evaluation of producing formations,estimation of the residual oil,determination of operating object, and the good geological effect is obtained, BNLL plays more important role in oilfield development.