Eliminating drilling mud solids from surface well equipment

摘要

Eliminating drilling mud and other solids from surface equipment of a well system (e.g. offshore platform) which is to receive solids-free completion and packer fluids having an affinity to entrain residual solids. These solids are mechanically removed (where possibly by scrapers, squeeging, etc.), and then the surface equipment is washed with water to carry the solids to a convenient disposal. Clean water is placed into the surface equipment and added to it are a surfactant and alcohol to produce a treated water. The treated water is circulated at turbulent (high shear) flowing conditions through the surface equipment. The treated water with entrained solids is removed to a suitable disposal by displacement with clean water whereby the surface equipment is sufficiently free of solids to avoid contamination of completion or packer fluids introduced thereinto.