Saudi Aramco operates one of the world's largest onshore drilling fleets. Below is the armbeat ranking of contractors and service companies actively operating across the Kingdom, sorted by composite performance grade (activity, performance, reliability). As of 2026, armbeat tracks 165 drilling and oilfield service 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. Franks International (grade B+), 5. TAQA (grade B).