System and method of reducing erosion in frac applications
AssigneeGE Oil & Gas Pressure Control LP
InventorsSaurabh Kajaria, Fauad Saleem
Life of this patent
Estimating the term…
Abstract
A well fracturing component has a steel body with at least one passage and a connector for connecting the body to a source of pressurized frac fluid containing particulates for injecting into a well. An epoxy-based primer layer bonds to a side wall of the passage. A siloxane topcoat layer bonds to the primer layer. The topcoat layer has a greater thickness than the primer layer. The topcoat layer has less hardness than the primer layer and loss hardness than the body.
Claims20
A well fracturing apparatus, comprising:
- a body having at least one passage and a connector for connecting to a source of pressurized frac fluid containing particulates for injecting into a well;
- an epoxy primer layer bonded to a side wall of the passage;
- and
- a topcoat layer bonded to the primer layer, the topcoat layer comprising a polymer having a flexible resilience to absorb and dissipate the impact energy from the particulates.
A well fracturing apparatus, comprising:
- a steel body having at least one passage and a connector for connecting the body to a source of pressurized frac fluid containing particulates for injecting into a well;
- an epoxy-based primer layer bonded to a side wall of the passage;
- and
- a topcoat layer bonded to the primer layer, the topcoat layer comprising siloxane having a flexible resilience to absorb and dissipate the impact energy from the particulates.
A method for reducing erosion in a passage of a well frac component due to particulate laden frac fluid being pumped through the passage, the method comprising:
- positioning a spray coating device within the passage, the spray coating device including a spray head that rotates about an axis;
- spraying an epoxy primer to a side wall of the passage via the spray head such that the epoxy primer is dispersed laterally outward from the spray head and allowing the epoxy primer to cure to form a primer layer;
- then
- spraying a polymer via the spray head onto the primer layer and allowing the polymer to cure to form a topcoat layer.
Dependencies are inferred from the claim text.