Case Study

Oil & Gas Water-Based Drilling Fluid in the Vertical Section and Oil-Based Mud in the Lateral Section–Eleven (11) Total Wells Drilled

Oil & Gas Water-Based Drilling Fluid in the Vertical Section and Oil-Based Mud in the Lateral Section–Eleven (11) Total Wells Drilled

Page 8 Case Study C - Project Terra Summary Location: Colorado, United States Application: Oil & Gas Water-Based Drilling Fluid in the Vertical Section and Oil-Based Mud in the Lateral Section – Eleven (11) Total Wells Drilled. System Configuration: Turn-Key CSI-D4TM Fully-Integrated Package Challenges / Problems: i. Though Colorado has had a long history of VCD deployments, the adoption rate has been hampered by the combination shale, clays, sand and gravel that make up the subsurface lithology. Not only does it limit a traditional dryer to a the oil-based section, when deployed in the oil-based section, the clays and fine solids would frequently result in screen blinding. ii. For Company Terra, the solution was to deploy a specialized combination of in-line

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