Companies performing flow testing, well evaluation, and reservoir characterization. As of 2026, armbeat tracks 30 well testing companies operating in Saudi Arabia. Rankings reflect a composite grade from three dimensions — Activity (operational footprint and volume), Performance (efficiency and KPIs), and Reliability (NPT events vs peer median) — recalculated as new daily drilling reports arrive. Top-ranked: 1. Rig (grade A+), 2. Baker Hughes (grade B+), 3. Halliburton (grade B+), 4. Al Ghaith (grade C+), 5. Oilserv (grade D).