Achieving Solids-Free Gas-Production Target Rate From Highly-Unconsoliddted-Sandstone Formation Intervals

摘要

One of the most challenging aspects of producing wells drilled in the unconsolidated pre-Khuff gas reservoirs in Saudi Arabia is to achieve solids-free production while trying to achieve high gas rates. Challenging reservoir conditions include high temperature and pressure, high stress, heterogeneity, and the absence of stress barriers that together make placing fracture treatments very difficult. Stand-alone screens were installed in openhole well completions in the sandstone reservoir and achieved excellent results by eliminating the need for a fracturing treatment.Achieving solids-iree production from unconsolidated-sandstone reservoirs is an ongoing challenge. The importance of effective sand control in these wells is the need to maintain the integrity of bottomhole and surface processing equipment and facilities, and to ensure that production targets are met consistently. Fig. 1 shows examples of the potential damage that sand production can cause.