Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)

Lei WANG,Yiren FAN,Chao YUAN,Zhenguan WU,Shaogui DENG,Weina ZHAO

Table 1 Selection criteria of inversion model and inversion algorithm.

Thickness of target layer H/m Single-boundary inversion model Dual-boundary inversion model Four-boundary inversion model Gauss- Newton algorithm Bayesian Algorithm H>4.0 A N/A N/A A N/A 1.0<H<4.0 N/A A N/A A N/A H<1.0 Non-appli- cab N/A e N/A A N/A A