Engineers design a comprehensive completion and service plan
Schlumberger recommended an integrated OptiPac service designed with a QUANTUM MAX packer, ClearPAC XD polymer-free VES gravel-pack fluid, and Alternate Path screens with transport and packing tubes to enable a complete annular pack even if bridging occurs. Engineers used proprietary state-of-the-art modeling software to choose optimal completion tools, fluids, and pumping schedules to ensure full, uniform gravel packing across the entire interval.
The hydraulically set QUANTUM MAX packer uses a barrel slip design, enabling high tensile and compressive loading without deformation of the packer. It is set with the 10K ASST, which is equipped with an annular check valve that ensures hydrostatic pressure is continuously applied to the open hole even after the gravel pack is complete. This eliminates tool-movement-induced swabbing effects, which can damage the integrity of the openhole filtercake. A damaged filtercake allows fluid loss, compromising gravel placement and well control.
ClearPAC XD fluid generates low friction pressure while transporting gravel through the shunt tubes and into the annulus; this minimizes the circulation pressure and avoids fracturing the formation in long wells.
After the gravel pack is complete, the filtercake must be completely removed to improve reservoir access across the open hole. The 10K ASST features a MUDSOLV service module, which enables pumping of specialty chemicals to dissolve the filtercake without pulling the service tool from the well, eliminating the extra trip that is conventionally required to remove the filtercake.