Nanoparticles and absorbent polymer wellbore cleanout compositions and methods of use thereof
AssigneeWeatherford Technology Holdings, LLC
InventorsMarieliz García López De Victoria, Francisco E. Fragachan, Edgar Darío Amaya Mantilla
Life of this patent
Estimating the term…
Abstract
Methods for wellbore cleanout operations may comprise introducing a wellbore cleanout fluid through one or more conduits into a wellbore, the cleanout fluid comprising an aqueous base fluid, an absorbent polymer, and a lubricant; wherein the lubricant comprises a colloidal dispersion fluid and nanoparticles, the nanoparticles have a particle size distribution characterized by a D50 value of about 1 nm to about 120 nm and are present in an amount of about 0.1 wt % to about 10 wt %, based on the weight of the lubricant.
Claims11
A method for wellbore cleanout comprising:
- hydrating an absorbent polymer;
- subsequently
- foaming a wellbore cleanout composition with a foaming gas to a foam quality of about 65% to about 80%;
- subsequently
- introducing the wellbore cleanout composition through one or more conduits into a wellbore, the wellbore cleanout composition comprising
- an aqueous base fluid, at about 86 wt % to about 99.8 wt %, by weight of the wellbore cleanout fluid, the absorbent polymer at about 0.1 wt % to about 4 wt %, by weight of the wellbore cleanout fluid, and a lubricant at about 0.1 wt % to about 10 wt %, by weight of the wellbore cleanout fluid;
- wherein the lubricant comprises a colloidal dispersion fluid at about 99.9 wt % to about 90 wt %—and nanoparticles at about 0.1 wt % to about 10 wt %, by weight of the lubricant, the nanoparticles have a particle size distribution characterized by a D50 value of about 30 nm to about 90 nm and are present in an amount of about 0.1 wt % to about 10 wt %, based on the weight of the lubricant, and wherein the lubricant has a coefficient of friction of about 0.150 to about 0.027 as measured in deionized water.
Dependencies are inferred from the claim text.