Tight reservoirs with low permeability may require stimulation in order to be able to produce at economic rates. Hydraulic fracturing is one of the most commonly used techniques to enhance well productivity.
Belayim and SIDRI fields are located along the western cost of Sinai in Egypt, where several wells were drilled targeting several tight zones. Multistage hydraulic fracturing was adopted as the main strategy to maximize production.
Among the different completion techniques, plug and perforate was the most commonly used in the fields. As the number of stages requiring hydraulic fracturing increased, the technique became more time and cost consuming, specifically due to the increased number of interventions. Optimizing job time and cost dictated the search for alternatives.
A complete shift to multistage completion systems was made. Multistage completion systems were successfully deployed in several wells and proved reliability as an efficient alternative. The significant reduction in the number of required interventions with the consequent reduction in operational time and cost, along with the ease of deployment were among the major contributions to the system's efficiency.
A multistage system relies mainly on packers for zonal isolation and shiftable sleeves for access to the target zones. Shiftable sleeves have been found an extremely important feature as it enables the selective stimulation and production of each individual zone.
This paper presents a comparative study of the main completion systems used in multistage fracturing operations through the analysis of over 7 wells, ranging from four to eight stages of hydraulic fracturing. The paper highlights the main differences in design, operation, time and cost.
Tight reservoirs with low permeability may require stimulation in order to be able to produce at economic rates. Acidizing and hydraulic fracturing are some of the most commonly used techniques to enhance well productivity.
Belayim and SIDRI fields are located along the western cost of Sinai in Egypt, where several wells were drilled targeting several tight zones. Some wells were drilled targeting a single interval while others targeted multiple zones.
