CUE uncovered major pressure constraints while optimizing VRUs at a 14-well CTB, enabling up to 50 psig reduction, improved vapor recovery, and increased production. Our tailored solution cut flaring, boosted efficiency, and included a complete bid-ready package.
Project Spotlight: Pressure Reduction & VRU Optimization at Delaware CTB
CUE was originally brought in to optimize vapor recovery compression at our client’s Central Tank Battery (CTB). During our on-site assessment, we discovered a significant, previously undiagnosed pressure restriction across the facility. This restriction was creating over 100 psig of backpressure at each of the 14 wellheads—limiting production efficiency and preventing the existing VRUs from discharging into the sales gas system. At the time, all vapors from the VRT were being flared—some of the highest-value gas on site being lost.
To fully understand the system behavior, CUE initiated a hydraulic study using Promax and Pipeflo. We identified five areas of concern, three of which were deemed economically feasible for implementation. Our Scope of Work was designed to remove up to 50 psig of pressure constraint and included:
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Re-routing VRU discharge to a more efficient tie-in near the sales gas line
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Dismantling and cleaning two suspect piping sections, believed to be partially blocked by solids formed from excess Triazene-based H₂S scavenger
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Debottlenecking a key line segment through reconfiguration of the piping layout
We also identified erosional velocities in the wellhead flowlines reaching 4× the recommended limits. Our recommendations included looping the flowlines, increasing flowing pressure, reducing production rates, and enhancing leak detection practices.
In parallel, we evaluated the site’s two VRUs: a rental Flogistix unit handling tank vapors, and a Jessco unit capturing vapors from the VRT. Our analysis forecasted declining vapor volumes, allowing for future removal of the rental unit once pressures were optimized. To ensure ongoing capacity and flexibility, we proposed commingling the VRU suction lines and installing a backpressure control valve (BPCV) on the VRT. This setup would allow seamless removal of one unit or the optional future addition of a blower, which could increase the Jessco unit’s throughput up to 750 MSCF/d.
CUE delivered a comprehensive package to support both the current and future optimization, including:
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A phased plan for VRU replacement to avoid production disruption
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Annotated imagery and marked-up P&IDs
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Valve sizing datasheets
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A complete bid package for contractor issuance
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Vendor drawings and compressor performance documentation
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Isometric piping drawings with bills of material
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Full procurement support
At CUE, we scale our deliverables to match the complexity of each project—ensuring our clients receive actionable, high-value solutions. This project not only improved site emissions performance and VRU utilization but also unlocked hidden production by removing major system constraints.
Let us know if you’d like to see examples of our work—we’d be glad to help you meet your operational and environmental goals.
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