Ascent has design and operating experience in the following areas:

1. Alkylation

2. Amine

3. Coker

4. Crude & Vacuum


6. Gasification

7. Geothermal

8. Hydroprocessing

9. Light Ends

10. Operations

11. Reformer

12. Refinery Optimization

12. Renewable Energy

14. SRU

15. Tier 3 Compliance

16. Utilities

17. Miscellaneous


Project ScopeClient
Alky Relocation Process Design PackageAlon (Krotz-Springs)
Conceptual DebottleneckingFrontier
Expansion Process Design PackageFrontier
Expansion Project ReviewFrontier
Iso Stripper New Side ReboilerMarathon (Gallup)
Isobutane Recovery Improvement ProjectMotiva (Norco)
HF Alkylation Unit ReviewMurphy
Base Case SimulationWestern
Conceptual ExpansionWestern
Alky Unit Treating StudyWestern (El Paso)
Alkylation Unit Revamp Initial DesignWestern (El Paso)
New Iso Stripper Process Design Package, Project Engineering, StartupWilliams
Acid Regenerator Project EngineeringWilliams


Project ScopeClient
Fuel Gas Amine Absorber Process Design PackageWilliams
Base Case Simulation and TroubleshootingWestern
Amine Regeneration Project (2)Sinclair (Casper)


Project ScopeClient
Coker Gas Oil RecoveryMarathon (Robinson)
Coker MACT Compliance Cold Eyes ReviewMotiva (Port Arthur)
Refractionate Coker NaphthaLyondell-Basell

Crude & Vacuum

Project ScopeClient
Unit Evaluation for Relocation (2)Basic
New Crude Unit Design; Crude Unit Conceptual Studies (2)Calumet Montana
HAZOP AssistanceChevron (El Paso)
Vent Gas Compressor Conceptual Scoping and Process DesignChevron (El Paso)
Improved Diesel RecoveryChevron (El Paso)
Vacuum Jet TroubleshootingChevron (El Paso)
Crude Unit Revamp Cold Eyes ReviewCoffeyville
New Crude Debottlenecking (3)Confidential
Grass Roots Conceptual DesignConfidential
Grass Roots Design for Heavy Oil Upgrader Demonstration PlantConfidential
Grass Roots Design for Heavy Oil UpgraderConfidential
Lubes Process Design Package for Multiple CasesConfidential
Dewaxing Conceptual StudyConfidential
Crude and Vacuum StudyConfidential
Crude Unit Revamp (Light Oil)Confidential
Crude Unit ReviewMurphy; HollyFrontier (El Dorado); Sinclair
Crude ExpansionMarathon (Gallup)
Maximize Distillate ProductionMonroe Energy
Crude and Vacuum StudyMonroe Energy (Trainer)
Crude and Vacuum RevampMonroe Energy (Trainer)
Crude Unit Debottlenecking Project for New Crude SlateMotiva (Norco)
Atmospheric Tower Tray SpecificationMotiva (Norco)
Crude and Vacuum Unit Cold Eyes ReviewMotiva (Port Arthur)
Operations and Startup AssistanceMultiple
Solvent Deasphalting Unit ReviewMurphy
Crude Unit Revamp/Fix Vacuum TowerNavajo
Crude and Vacuum Update for Revised CrudeNavajo
Crude Performance ImprovementNavajo
Preflash Tower Bottoms HydraulicsNavajo
Solvent Deasphalter Startup SupportNexen
Solvent Deasphalter- Solvent Loss to Product TroubleshootingNexen
Canadian Dilbit DesignNexen;
Crude Unit Naphtha DebottleneckingNexen; U.S. Oil
Client EPC RepresentativeOPTI
Crude Debottleneck and Diesel RecoveryPhillips 66 (Borger)
Crude and Vacuum Diesel RecoveryPhillips 66
Crude, Vacuum, and SATS Project Development SupportPhillips 66 (Ferndale)
Crude Expansion and Distillate DrawSilver Eagle
Crude Unit SimulationSilver Eagle
Transfer Line EvaluationSilver Eagle
Crude Unit Design ReviewSinclair
Crude Fouling StudySinclair (Casper)
Feasibility Study for a New CrudeStancil
Flash Point StudyStancil
Crude Unit RevampU.S. Oil
Crude and Vacuum Unit RevampU.S. Oil
Modeling to Assist Pinch Study (2)Valero
Pinch StudyValero
Crude Slop Stream Capacity ImprovementWestern
Unit debottlenecking Revamp Process Design PackageWestern


Project ScopeClient
Slurry Circuit Fouling PreventionChevron
New Tray DesignCoffeyville
Gas Plant Due Diligence Conceptual StudyConfidential
FCCU Cold Eyes Operations ReviewCountryMark
FCCU Review for Increased C3+ RecoveryMarathon (Mandan)
Reactor/Regenerator ReviewMonroe Energy (Trainer)
FCCU High Level ReviewNavajo
Gas Plant Modeling and DebottleneckingSinclair
Process Evaluation StudySinclair
Olefin Splitter OH Pressure Control ModificationsSinclair (Casper)
FCCU Stabilizer Fractionation ImprovementSinclair (Casper)
FCCU Gas Plant ModificationsSinclair; CVR Energy
Base Case EvaluationWestern
Wet Gas Compressor DebottleneckingWestern
Conceptual Expansion StudyWestern


Project ScopeClient
Preheat StudyFalconBridge


Project ScopeClient
Chemical Abatement Tower Review and DesignOrmat
Steam Drum SizingOrmat
Gathering and Reinjection Process ConceptualizationOrmat
Vent Gas Scrubbing Feasibility StudyOrmat
H2S Emissions Reduction StudyOrmat
Geothermal Solids FilteringConfidential


Project ScopeClient
Naphtha ProcessingCalumet Montana
Gas Oil HDT Conceptual StudyCalumet Montana
Hydrogen Feed and Recovery System StudyCalumet Montana
Naphtha Splitter Fractionation StudyCoffeyville
Recycle Gas ExpansionConfidential
Scoping Expansion StudyConfidential
Expansion StudyConfidential
Process Design for a Revamp and Relocation of an Existing UnitConfidential
Expansion Process Design PackageConfidential
Grass Roots Conceptual DesignConfidential
Client Representative During Licensor Process Design Package DevelopmentConfidential
Heavy Oil HDT DebottleneckingConfidential
Lubes Hydroprocessing Unit Evaluation For More Difficult FeedstockConfidential
Hydrotreater Cold Eyes ReviewConfidential
Reactor Internals SpecificationConfidential
Hydrocracker Fractionation DesignCVR Energy
NHT Naphtha Splitter Fractionation StudyCVR Energy
Feed and Product Offsites DesignGiant; Valero
PHA AssistanceHolly
Hydrocracker Naphtha Fractionation StudyHolly; Nexen
ULSD Process StudyNavajo
RVP reduction preliminary studyMarathon (Detroit)
NHT Depentanizer OH Fin Fan DesignMarathon (Detroit)
NHT Heat Exchanger ReviewMarathon (Detroit)
KHT/DHT ExpansionMarathon (Gallup)
Hydrocracker Revamp StudyMarathon (Robinson)
Conceptual Isocracker RevampMonroe Energy
NHT Base Case StudyMonroe Energy
VGO HDT Conversion to DSL HDTMonroe Energy
Hydrotreater Limits and Opportunities ScopingMonroe Energy (Trainer)
Isocracker Jet Production StudyMonroe Energy (Trainer)
NHT Reactor Effluent Fouling ReviewMonroe Energy (Trainer)
ULSD RevampMontana Refining
Hydrogen Plant Client RepresentativeMontana Refining
Hydrocracker Project SupportMotiva (Norco)
Hydrocracker Cold Eyes ReviewMotiva (Port Arthur); Motiva (Norco)
Hydrocracker Recycle Gas Knock Out Drum ReviewMotiva (Port Arthur)
Lube Oil Hydrocracker Revamp (2)Motiva (Port Arthur)
Hydrocracker Fractionation TroubleshootingMurphy
Hydrocracker Naphtha Fractionation StudyNexen
Water/Oil Emulsion ReviewONA Polymers
Client EPC RepresentativeOPTI
NHT Revamp Feasibility StudyPhillips 66 (Alliance)
Gas Oil Hydrotreater Expansion/Diesel Recovery RevampPhillips 66 (Borger)
DHT Preheat DebottleneckingPlacid
DHT Preheat DebottleneckingSinclair (Casper)
DHT Hydrogen InjectionSinclair (Casper)
NHT Stripper FeasibilitySinclair (Casper)
HDT Stripper OptimizationSonneborn
Natural Gasoline Fractionation Feasibility StudyStone
Water Wash Installation Process Design PackageUniversal
Drum Size Evaluation and New SpecificationsUniversal
Naphtha Unit DebottleneckingU.S. Oil
Hydrocracker Unit TroubleshootingValero (Meraux)
Hydrogen Plant OptimizationWestern
Process Design for Increased Product CoolingWilliams

Light Ends

Project ScopeClient
C3/C4 Splitter ReviewBuckeye
Condensate Fractionation Process StudyConfidential
Light Ends Recovery From Fuel Gas Conceptual Study (3)CVR Energy; Silver Eagle; U.S. Oil
Gas Plant Conceptual StudyHarvest Pipeline
Light Ends Recovery DesignSinclair; U.S. Oil
Light Ends RecoveryHollyFrontier (El Dorado)
Light Ends RecoveryHollyFrontier (Navajo)
C3= Hydrogenation to Motor PropaneIsland Energy Services Refinery
RVP MinimizationMarathon
Butane RecoveryMarathon (Detroit)
Butane Recovery Conceptual StudyMarathon (Detroit)
RCCU Gas Plant (Assess & Select Phase)Motiva (Norco)
C4 Splitter Detailed DesignMotiva (Norco)
FCCU Gas Plant StudyMotiva (Norco)
Sats Gas Plant DebottleneckingMotiva (Norco)
FCCU Gas Plant RevampMotiva (Port Arthur)
NGL Stabilization ProjectRedd Engineering
Sats Gas Plant Modifications for Specification PropaneSinclair
Operations and Startup AssistanceUniversal
Base Case Evaluation (2)Western
Conceptual Debottlenecking (2)Western
Expansion Process Design Package (2)Western
Butane Treating (2)Western


Project ScopeClient
Plant SupportBuckeye
Project Development On-site SupportEquilon
Plant Support with Multiple ProjectsHollyFrontier  (Cheyenne)
On-Site SupportHollyFrontier (Cheyenne); Western
Miscellaneous Tech Services SupportHollyFrontier (Navajo); Monroe Energy; U.S. Oil
Interim Technical ManagerMurphy; Western
Crude and Vac T/A StudyNavajo
Hydrocracker Stripper Operations ReviewNavajo
On-Site T/A SupportSinclair (Casper); U.S. Oil
Operations SupportSinclair (Casper); Murphy
Process Hazard Tables DevelopmentSinclair (Rawlins)
On-Site Support for Process Hazard Table Action ItemsSinclair (Rawlins)
Safe Operating Limits EvaluationSinclair (Rawlins)
Crude and Vac StartupU.S. Oil
Develop Operator Training ManualsU.S. Oil
Turnaround SupportWestern; Sinclair


Project ScopeClient
Debutanizer SimulationConfidential
Octane MaximizationPhillips 66 (Borger)
Reformer RevampPhillips 66 (Borger)
Reformer ModelSinclair (Casper)
Effluent System Modeling for Severity ReductionWestern

Refinery Optimization

Project ScopeClient
Refinery Opportunity ReviewCalumet Montana
Gasoline Emissions ModelingHolly Energy Partners
Refinery Naphtha Disposition Review and Isomerate Vapor Pressure ReductionHollyFrontier (Navajo)
Refinery Mass Balance Yield AccountingIsland Energy Services Refinery
Aromatics OptimizationMarathon (Garyville)

Renewable Energy

Project ScopeClient
New Biodesulfurization Conceptual Design AssistanceConfidential
Renewable DieselConfidential
Water in RTO Feed TroubleshootingHereford Renewable Energy
Compressor SelectionHydrostor
Green Gasoline Biochar from Non-food Sources ProjectMerrick
Solar Project P&ID DevelopmentOptiSolar


Project ScopeClient
Incinerator DebottleneckingWestern

Tier 3 Compliance

Project ScopeClient
Tier 3 Compliance StudyAndeavor (Gallup)
Tier 3 Scoping StudyMonroe Energy (Trainer)
New NHT for Tier 3 Compliance (Assess and Select Phase)Motiva (Norco)
Tier 3 Hydrotreater RevampMotiva (Norco)
Tier 3 Compliance StudyMotiva (Port Arthur)


Project ScopeClient
Selectifier Design5ECO
Condensate System DegasserAMPCO
Sour Water System Improvement StudyConfidential
Condensate System Improvement Study (2)ConocoPhillips; Sinclair
Filter Improvement ProjectCOP
Pump Hydraulic Analysis (2)Design Specialties
Cooling Water System Hydraulic Modeling and Debottlenecking (5)Frontier; Western (3); Motiva (Norco)
Ethanol CO2 Scrubber ModelingHereford Renewable Energy
Waste Incineration Scrubber ReviewHeritage-WTI
Fuel Gas Sulfur ReductionMarathon (LAR)
Engineering SupportMerrick
Sour Water Stripper TroubleshootingMurphy
Vent Gas ScrubbingOrmat
Sour Water System Improvement StudySinclair
Caustic System EvaluationSinclair
Cooling Water System DebottleneckingUniversal
Waste Water Vapor Combustor DesignValero (McKee)
Instrument Air Compressor InstallationValero (McKee)
Plant Air Compressor Specifi  ation\ProcurementValero (Sunray)
Vent Gas ScrubbingWestern
Hydrogen Balance and Flaring Reduction StudyWestern
Cooling Water System Debottlenecking and Piping DesignWilliams


Project ScopeClient
Process/Operations Trouble-shooting Fracturing Fluid ManufacturingApex Resources
Filter/Incineration Optimization StudyConocoPhillips
Ion Exchange Process ImprovementHarrell Industries
Ethanol Plant RTO Burner CalculationsHereford Renewable Energy
Process Safety Management (PSM)Holly
Equity Engineering Practices ImplementationHolly Energy Partners
Pipeline FoulingHolly Energy Partners
HD Petroleum Distillation DesignIncrease Performance
Oil Recovery Pilot Plant ReviewIonic Reclamation LLC
Transloading SupportMerrick
Batch Blending Process DesignMerrick
Refinery Conceptual Expansion OptimizationMontana Refining
Hydraulics TrainingPBF
General Project Scoping Phillips 66 (Ferndale)
Used Oil Reprocessing SimulationREDD Engineering
Technical TrainingRPS, Western
Drawing UpdateRyckman
Owner’s Engineering Services for Methanol ProjectSouth Louisiana Methanol
GTL ReviewStone
Thermal Oxidizer Specification\ProcurementValero (Sunray)
Relief Valve Studies (Multiple)Various
Plant Wide PSV and Flare StudiesVarious
MSAT II ComplianceWestern