Compostion for borehole treatment
AssigneeSchlumberger Technology Corporation
InventorsNikhil Shindgikar, Jesse Lee
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Abstract
The invention is a composition, for use in treating oil wells, comprising fibres, 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.
Claims20
A composition for treating a formation surrounding a borehole, comprising:
- a well treatment fluid including fibres;
- 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.
A method of treating an oil well, comprising:
- pumping a composition as claimed in any preceding claim into the borehole;
- allowing the fibres to accumulate in a region to be treated;
- raising the temperature in the borehole in the region to be treated to a level above the transition temperature of the hot melt adhesive component such that the fibres adhere to each other in the region.
A method of using a hot melt adhesives for the treatment of a borehole wherein said hot melt adhesives is in contact with fibers and solid particles characterized in that said hot melt adhesive forms a network with said fibers and solid particles when the temperature in the borehole is above its glass transition temperature.
Dependencies are inferred from the claim text.