convergence problem

Hi everybody
I am working on simulation case with Eclipse. The model has 30 years of history. Simulation goes well for the first 15 years with normal time step size. After these 15 years model encountered non linear convergence problem and then time steps cut to 1/2 days or even hours in for some time steps. Any comment on problem source is welcome.

Read the forum

Carefully read this. Then try to find the source of the problem by yourself.

Regards,

dah7542