as a result, the capture cross section of formation water can be enlarged.So, NLL can be used in low-salinity formations and residual-oil data can also be obtained.

• 它是向地层中注入高俘获截面的硼酸，增大地层水俘获截面，从而使中子寿命测井可应用于低矿化度地区，获取地层剩余油资料。