149062 – Successful Drilling and Deployment of an Open Hole Multistage Fracturing System in a Deep and Hostile Sandstone Gas Reservoir


This paper describes the successful implementation of open hole multistage system (OHMS) completions in the pre-Khuff Unayzah sandstone formation of Saudi Arabia. At 13,000 to 17,000 ft TVD, this formation is a deep, hostile environment and is extremely difficult to drill. A lateral section was drilled from an existing vertical well in the direction of minimum stress, uncommon in Saudi Arabia. However, by drilling in this direction, the OHMS was able to create transverse fractures and increase production by 2.4 times that of the original vertical well.