If you cannot find the solution manual for Tarek Ahmed, you can use free, open-access resources that cover the exact same topics and often provide step-by-step examples:
If you have a physical or digital copy of the book, you may already have access to some answers.
That night, curious, she opened the handbook to Problem 10.3—a classic volumetric dry gas reservoir calculation. The official solution manual (the one she had downloaded from a shady link years ago) gave a neat answer: Original Gas in Place (OGIP) = 120 Bcf. The field had produced 15 Bcf, and the pressure had dropped from 3,000 psi to 2,700 psi. Straight line. Simple.
If you're interested in downloading the solution manual for the "Reservoir Engineering Handbook" by Tarek Ahmed, you can try searching online for a reliable source. However, be sure to verify the authenticity and accuracy of the solution manual before using it.
Constructing phase diagrams and using Equations of State (EOS).
To the student reading this: Download the handbook (legitimately, via your university license). Hunt down the solution manual through proper channels. Then, cover up the answers. Struggle with the problem first. Sweat over unit conversions. And only then, unveil the solution manual to see the path.
(without manual):