Overview Open hole completion through fractures, high rates of H2S3 Problems Experienced Well clean-up Production 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 hydrostatic pressure in the formation. Any H2S introduced […]
Overview Geology: Mature Formations, Low Pressure Pressure 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 cementing Difficulty with logging and using measurement while drilling (MWD) High Risk of H2S Solution AphronICS Results AphronICS Successfully drilled to total depth
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 circulation Reservoir gas control Cementing Well clean-up Production stimulation Solution Drilling systems employed and compared: 1. Conventional Water Based Mud (water mud loaded with LCM) 2. Blind/Dry Drilling (drill
Overview Geology: Mature Formations, Low Pressure Pressure Gradient: 0.16 a o.20 psi/ft @ 6,000 feet. Equivalent: 2.4 – 3.9 ppg Wells Drilled with Aerated Mud: VLA-1271, VLA-1278, VLA-1283, VLA-1285, VLA-1289 and VLA-1291 Density Equivalent with Aerated Mud: 4.0 ppg Problems Experienced Unstable borehole due shales, tight hole, and stuck pipe Lost circulation even with aerated
