You are assigned to design a development plan to produce from a gas reservoir that has a low permeability. Your choices are (1) vertical well, (2) bi-wing fracture in vertical well, (3) horizontal well, and (4) 10 fractures in horizontal wells. Suggested plan is shown in the figure. You are required: 1. Develop a program for well productivity and production rate for each case 2. Evaluate the economic benefit for each plan and recommend the one that is the best