Low flow rates and antiswab tools ensured complete gravel pack
The operator decided to evaluate the effectiveness of openhole gravel packing in a shallow horizontal well that had a TVD of 2,963 ft [903 m] and an 83/8-in openhole lateral of approximately 1,148 ft [350 m]. Schlumberger recommended MeshSlot screens due to their high-flow shroud design that allows efficient flow distribution through the sintered mesh filter medium. The AquaPac
system was then deployed to carry and place gravel around the MeshSlot screens. This combination of the AquaPac system and MeshSlot screens reduced friction and enabled lightweight gravels to be transported at lower flow rates, which kept the unstable open hole from collapsing.
To prevent exposing the unconsolidated sandface, the QUANTUM gravel-pack packer antiswab service tool was added to the toolstring. This tool maintains constant hydrostatic pressure in the open hole, eliminating the swabbing effects of hardware movement and ensuring filtercake integrity until gravel placement is complete. After the excess gravel was screened out and reversed, the service tool allowed spotting of filtercake removal treatments, eliminating a dedicated cleanup run.