Downstream

To support facilities associated with the Centralized Storage, Keystone provided project management, engineering, and design FEED services. The scope included the installation of temporary storage and stabilization capabilities for the Eagle Ford Region to act as a surge for the Condensate Trunkline. Additionally, the project involved future expansion capabilities for an additional storage tank and vapor recovery to gather the flash gas. The stabilization capabilities were necessary to get RVP to an acceptable level for sales contract. The design criteria associated with the scope included a design storage capacity of 30,000 BBL and a design facility average flowrate of 120,000 BOPD.

Keystone provided project management and detailed engineering for the OSBL portion of restarting the coke conveyor unit at a refinery. Keystone’s scope included performing a 3D laser scan and assessing the existing structural steel and foundations which previously supported a 24” wide conveyor and providing detailed design for all necessary upgrades to support the installation of a new 36” wide conveyor in its place.

Additionally, Keystone provided detailed civil/structural design for a new coke crusher at the north end of the conveyor, as well as detailed electrical and instrumentation engineering.

Keystone provided project management, engineering, and design services for the Lake Boeuf Grand Coteau Facility design to support the addition of two new wells and working over the existing Well #1. The new wells required a full facility to produce, separate, store, and sell the oil and gas production.

The scope of work for the new facility design included well flowline rated for SITP of the well (<10,000 psig) for Well #1, well flowline rated for SITP of the well (<15,000 psig) for Well #2 and #3, line heater with line heater fuel gas scrubber, slug catcher, HP and LP separator, fuel gas/instrument gas scrubber, oil heater treater, glycol dehydration package, amine unit for CO2 removal, dewpoint control unit, oil storage tanks, three 500 BBL water storage tanks, one spare storage (slop) tank, tank recirculation/offloading pump skid, HP flare scrubber and pump, LP and HP flare, and LP flare liquid blowcase.

Keystone provided engineering and design services to evaluate the sizing and hydraulics of relief valves at a refinery in Northwest, Louisiana. The PSV assessment included 404 PSVs and 31 total units. The scope of work included site visit per unit for data collection, the design basis for applicable scope in each unit, API 521 calculation for each PSV reviewed, a summary report including unit limitations, and an updated model of the relief system in Visual Flare.

Keystone provided engineering support to perform an existing mezzanine analysis to determine if it can support the new loading from a vertical accumulator vessel. The scope of work included a structural analysis model of the mezzanine with new loading from the vessel, determining if the mezzanine's structural integrity is sufficient to handle the additional loading, and drawings for modifications to the mezzanine to handle the new loading.

Keystone provided engineering, design, and construction support for a significant process upgrade at the refinery. The multi-discipline project added new SulfaTreat technology designed to remove Hydrogen Sulfide (H2S) from the continuous flare system. A highly accelerated schedule was vital to meet newly issued federal regulations from the Environmental Protection Agency (EPA). The arduous 15-week project schedule showcased one of Keystone’s greatest strengths– the ability to be responsive and rapidly assemble an elite project team.

Keystone provided procurement support in addition to civil/structural, process/mechanical, electrical, instrumentation, and controls/automation engineering. The highly experienced team was able to engineer innovative solutions to save time and keep the project on schedule. The owner and the construction contractor commended Keystone for producing all deliverables on-time or early and doing so with a remarkably high level of quality.