Wearlon® 2020.90 / 2020.98

Petroleum Industry Coating for Transporting Crude Oil

ADVANTAGES

• Reduces drag resistant of oil flow through pipes
• Discourages paraffin build-up
• Demonstrates superior corrosion resistance
• Resistant toward H2S
• Resistant toward acids (H2SO4)
• Provides easy clean-up of oil from surfaces
• Non-Stick, abrasion resistant properties
• Substantially reduces friction
• Lubricious
• Water-based, environmentally friendly
• Safe and easy to apply
• Cures at room temperature
• Durable
• Surfaces stay clean, reducing maintenance costs
• Apply with conventional equipment
• Extends the life of steel, iron, aluminum, concrete, and a wide range of other substrates

Wearlon Field Testing

A 2-inch Wheatley 300 W.P. bronze check valve was coated with 4 dry mils of Wearlon® 2020.90 primer and overcoated with 4 dry mils of Wearlon® 2020.98 topcoat and put into service for 2 years. The valve was installed at the wellhead leading into the flowline on a production well in a water injected field in the North Permian Basin of Texas. Previously, the paraffin build-up resulted in manual cleaning of the valve once every two weeks. By using the Wearlon® coatings, the cleaning was only necessary once every two months. Additionally, the paraffin was not adhering to the Wearlon® surface, and it allowed for easy cleaning.

During the two years that the valve was in service, the well produced 9 BBL 26 gravity sour crude and 99 BBL salt water daily at a casing pressure of 50 PSI. The well was acid gel fractured with 15% HCL in a surfactant gel. The H2S content of the crude from this field was approximately 29 PPM.

After opening the valve, paraffin was found, but was easily removed by turning the valve on its end and tapping lightly. A thin film of paraffin and loosely adhered iron oxide remained in the recesses, but not enough to effect the action of the flapper.

After cleaning, no damage to the coating could be found in the valve body, and Wearlon® 2020.90 and Wearlon® 2020.98 were still tightly adhered.

Wearlon® 2020.98 exhibited superior non-stick properties when compared to Teflon® coatings that were exposed to a 24 hour submersion in a 10% sulfuric acid solution, as reported by the University of Oulu in Finland in the following chart.