Composition for borehole treatment

摘要

A composition, for use in treating oil wells, comprises fibers, hot melt adhesives and particulate solids. This composition has a wide range of applications including preventing or lessening lost circulation, wellbore strengthening or consolidation, controlling fluid loss, producing a “stress cage” effect, gravel packing, acting as an aid to cementing, and for proppant backflow control.

主权项

1. A composition for treating a formation surrounding a borehole, comprising:
a well treatment fluid including fibres, the fibres being present at a concentration between 1.4 g/L and 23 g/L; at least one hot melt adhesive component; and at least one solid particulate component; wherein the hot melt adhesive is suitable to soften when the temperature in the region of the borehole is raised above the transition temperature of said adhesive component, and wherein particles of the hot melt adhesive component are grafted onto at least some of the fibres.