June 2019

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[vc_row][vc_column][vc_column_text] Overview Open hole completion through fractures, high rates of H2S     Problems Experienced Well clean-upProduction stimulation   Solution AphronICS™ (Drill from surface to TD with AphronICS™ system)   Results Only the AphronICS™ system showed ability to maintain returns on on the value proposition. Gas entrainment was effective by maintaining

Overview Geology: Mature Formations, Low PressurePressure Gradient: equivalent 4.5 – 5.0 ppg @ 5,500 feet. Previous Wells drilled with low density fluids, underbalanced drilling (UBD Problems Experienced  Lost circulation Lost circulation during cementingDifficulty with logging and using measurement while drilling (MWD)High Risk of

Overview Kerr McGee has drilled 20 wells in the field with 4 different drilling techniques to compare the efficacy of each. Problems Experienced Difficulty with loss circulationReservoir gas controlCementingWell clean-upProduction stimulation Solution Drilling systems employed and compared:1. Conventional Water Based Mud (water mud loaded

Overview Geology: Mature Formations, Low PressurePressure Gradient: 0.16 a o.20 psi/ft @ 6,000 feet. Equivalent: 2.4 - 3.9 ppgWells Drilled with Aerated Mud: VLA-1271, VLA-1278, VLA-1283, VLA-1285, VLA-1289 and VLA-1291Density Equivalent with Aerated Mud: 4.0 ppg Problems Experienced Unstable borehole due shales,