Ebook: Fundamentals of Reservoir Engineering

I am a mechanical engineer who has no background with geophysics or reservoir engineering, but I have to say that if you have some knowledge on thermodynamics , chemistry and some calculus, this book will really walk you through the fundamentals of Reservoir engineering.
It is really thorough and it explains things in a really simple way.
Good book for someone who wants to know about this field, and wants to teach herself or himself about it.