Drilling Fluid
Testing Gilsonite in the Mud Laboratory
Before a field trial, laboratory testing confirms that a gilsonite grade suits your fluid and well conditions. Confirm…
Knowledge Center
Practical, expert articles on gilsonite in drilling fluids, asphalt, foundry, inks, paints, coatings and waterproofing.
Drilling Fluid
Gilsonite for Horizontal and Extended-Reach Drilling
Horizontal and extended-reach wells put extra demands on drilling fluids: long open-hole sections in shale, high torque and…
Drilling Fluid
Gilsonite as a Mud Additive: Frequently Asked Questions
Does gilsonite work in water-based mud? Yes, especially with surfactants. For easy mixing in water, sulphonated asphalt is…
Drilling Fluid
Designing Lightweight Cement Slurries with Gilsonite
In weak or depleted formations, heavy cement slurries can fracture the rock and cause losses. Lightweight slurries solve…
Drilling Fluid
Gilsonite in Oil Well Cementing
Gilsonite has been used in oil well cement slurries for decades. Its low density and sealing ability make…
Drilling Fluid
Gilsonite for Lost Circulation and Wellbore Strengthening
Lost circulation — the loss of drilling fluid into the formation — costs the industry billions each year.…
Drilling Fluid
Preventing Differential Sticking with Gilsonite
Differential sticking happens when the drill string is pressed into a thick filter cake by the pressure difference…
Drilling Fluid
Reducing Torque and Drag with Asphaltic Additives
Torque and drag limit how far and how fast you can drill, especially in deviated and horizontal wells.…
Drilling Fluid
Selecting Gilsonite Softening Point for Your Well
Softening point is the single most important property when choosing gilsonite for drilling. Gilsonite seals best when it…
Drilling Fluid
Using Gilsonite in Oil-Based and Synthetic Muds
Oil-based muds (OBM) and synthetic-based muds (SBM) give excellent shale inhibition, but fluid loss and wellbore strengthening still…
Drilling Fluid
Sulphonated Asphalt Dosage Guide for Water-Based Mud
Getting the dosage right ensures you get the benefits of sulphonated asphalt without wasting product. Sulphonated asphalt is…
Drilling Fluid
What Is Sulphonated Asphalt?
Sulphonated asphalt is a modified asphalt product used as a shale stabilizer and fluid loss additive in water-based…
Our Products
| Product | Particle size | Softening point (R&B) | Typical dosage | |
|---|---|---|---|---|
| Gilsonite Lump | 0 – 50 mm (custom) | 150 – 220 °C | Depends on application. | Spec · MSDS · COA |
| Gilsonite Granular | 1 – 5 mm | 150 – 200 °C | Asphalt: 4–12 % by weight of binder. | Spec · MSDS · COA |
| Gilsonite Powder | 100 – 200 mesh | 150 – 220 °C | Drilling 2–8 lb/bbl · asphalt 4–12 % of binder · foundry 0.3–1.0 % | Spec · MSDS · COA |
| Micronized Gilsonite | 300 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil. | Spec · MSDS · COA |
| Drilling Fluid Grade Gilsonite | 75 – 200 µm | 160 – 220 °C (grades) | 2 – 8 lb/bbl | Spec · MSDS · COA |
| Sulphonated Asphalt | — | — | 2 – 6 lb/bbl | Spec · MSDS · COA |
| Cementing Grade Gilsonite | 75 – 200 µm | 160 – 220 °C | 5 – 15 % BWOC | Spec · MSDS · COA |
| Asphalt Modifier Grade Gilsonite | Powder ≤ 200 mesh / granular 1–5 mm | 150 – 200 °C | 4 – 12 % by weight of binder | Spec · MSDS · COA |
| Foundry Grade Gilsonite | 100 – 300 mesh | 150 – 200 °C | 0.3 – 1.0 % (iron) | Spec · MSDS · COA |
| Ink & Paint Grade Gilsonite | 200 – 600 mesh | 150 – 180 °C | Ink varnish: 20–40 % in oil | Spec · MSDS · COA |
| Coating & Waterproofing Grade Gilsonite | ≤ 200 mesh | 150 – 200 °C | 5 – 25 % of compound | Spec · MSDS · COA |
| Sealer & Filler Grade Gilsonite | ≤ 200 mesh | 150 – 180 °C | Sealer: 15 – 35 % | Spec · MSDS · COA |