 HOUSTON, Aug. 23, 2021 PRNewswire -- NexTier Oilfield Solutions Inc. NYSE: NEX NexTier or the Company today announced that the Company has recently launched the IntelliStim fracturing optimization system and has completed its first project for a major operator in the Mid-Continent region. The proprietary IntelliStim system packages the full array of NexTiers NexHub digital technologies into a comprehensive, value-added offering. 