Grainsize, energy and water depth work together to indicate sedimentary setting.The above factors can be reflected directly or indirectly from logging curves of natural potential and resistivity.

• 粒度、能量和水深诸因素综合起来可指示沉积环境，这些因素在自然电位和电阻率测井曲线上可得到直接或间接的反映。