Method of pretreating a pipeline or apparatus
AssigneeRiddle's Dehi & Cbemical Services Co., Inc.
InventorJames A. Allred, Jr.
Life of this patent
Estimating the term…
Abstract
A method of pretreating a pipeline or apparatus is carried out by selecting a colloidal particle dispersion having inorganic nanoparticles with an average particle size of from 500 nm or less that exhibit properties of Brownian motion. Surfaces of a pipeline or apparatus are contacted with a treatment composition comprising the colloidal particle dispersion. The colloidal particles of the treatment composition are allowed to adhere the surfaces of the pipeline or apparatus to facilitate a reduction in friction of the surfaces of the pipeline or apparatus and/or lower the pressure drop of fluid flowing over the surfaces of the pipeline or apparatus and/or to reduce the formation of surface deposits on the surfaces of the pipeline or apparatus.
Claims20
A method of pretreating a pipeline or apparatus to reduce friction and/or lower pressure drop of fluid flowing over surfaces of the pipeline or apparatus and/or to reduce the formation of surface deposits on the surfaces of the pipeline or apparatus, the method comprising:
- selecting a colloidal particle dispersion having inorganic nanoparticles with an average particle size of from 500 nm or less that exhibit properties of Brownian motion, the inorganic nanoparticles being positively charged nanoparticles;
- contacting the surfaces of a pipeline or apparatus with a treatment composition comprising the colloidal particle dispersion while the pipeline or apparatus or portions thereof are under cathodic protection, the surfaces of the pipeline or apparatus being surfaces of a fresh pipeline or apparatus and/or surfaces of a non-fresh pipeline or apparatus where any residues or deposits that have been previously formed on such surfaces of the non-fresh pipeline or apparatus from prior fluid contact have been removed;
- allowing the colloidal particles of the treatment composition to adhere the surfaces of the pipeline or apparatus to facilitate a reduction in friction of the surfaces of the pipeline or apparatus and/or lower the pressure drop of fluid flowing over the surfaces of the pipeline or apparatus compared to the same fluid flow over the surfaces of the pipeline or apparatus without undergoing the pretreatment and/or to reduce the formation of surface deposits on the surfaces of the pipeline or apparatus.
A method of pretreating a pipeline or apparatus to reduce friction and/or lower pressure drop of fluid flowing over surfaces of the pipeline or apparatus and/or to reduce the formation of surface deposits on the surfaces of the pipeline or apparatus, the method comprising:
- selecting a colloidal particle dispersion having charged inorganic nanoparticles with an average particle size of from 300 nm or less that exhibit properties of Brownian motion, the inorganic nanoparticles being positively charged nanoparticles;
- while the pipeline or apparatus or portions thereof are under cathodic protection, contacting the surfaces of the pipeline or apparatus with a treatment composition comprising the colloidal particle dispersion, the surfaces of the pipeline or apparatus being surfaces of a fresh pipeline or apparatus and/or surfaces of a non-fresh pipeline or apparatus where any residues or deposits that have been previously formed on such surfaces of the non-fresh pipeline or apparatus from prior fluid contact have been removed;
- allowing the colloidal particles of the treatment composition to adhere the surfaces to facilitate a reduction in friction of the surfaces of the pipeline or apparatus and/or lower the pressure drop of fluid flowing over the surfaces of the pipeline or apparatus compared to the same fluid flow over the surfaces of the pipeline or apparatus without undergoing the pretreatment and/or to reduce the formation of surface deposits on the surfaces of the pipeline or apparatus.
Dependencies are inferred from the claim text.