OG Suite
Engineering calculation tools grounded in codes, standards and accepted industry practice. Built for Pre-FEED and FEED screening — honest, transparent, and always requiring your engineering judgment.
Available Tools
All tools run entirely in your browser — no installation, no licensing fees.
Greenfield Engineering
OG Cost Estimatorⓘ
Parametric CAPEX/OPEX modeling using three-method triangulation: equipment factored, analogous project scaling, and weight-based parametric. Explicit P10/P50/P90 output. Includes project economics with DCF, NPV, IRR, and breakeven analysis.
OG Engineering Calculatorⓘ
Process calculations grounded in published industry standards. Covers separator sizing, pipeline hydraulics, relief valve sizing, heat exchangers, compressors, flare systems, subsea pipelines & flowlines, riser design, jacket design, helideck sizing, and more.
OG Procurement Toolⓘ
Generate issuable Technical RFQ packages from Engineering Calculator outputs. Equipment datasheets, vendor bid evaluation workbook with weighted scoring, sour service auto-flagging, and material selection per NACE/AMPP standards.
P&ID Generatorⓘ
Generate ISA-5.1 compliant P&ID schematics using pyDEXPI standard objects. 6 templates covering 3-phase separators, gas scrubbers, centrifugal pumps, compression trains, produced water, and TEG dehydration systems. Equipment list integration with MEL export.
Design Basisⓘ
Structured project design basis document covering process conditions, equipment design P&T, fluid properties, utilities, and environmental basis. Draft/IFR/Approved status tracking with JSON export.
Client Deckⓘ
Generates presentation-ready project summary decks from Cost Estimator, Brownfield, and Pre-FEED tool outputs. PDF and PPTX export.
Process Screening
Flash Calculator (DWSIM)ⓘ
PT flash calculations powered by the DWSIM 9.x thermodynamic engine. Determine vapor/liquid fractions, phase compositions, and densities for hydrocarbon mixtures using Peng-Robinson, SRK, or GERG-2008 property packages.
Topsides Process Simulationⓘ
Full topsides separation train simulation: wellhead to export. Fluid composition input, HP/MP/LP separator pressures, produced water treatment. Generates stream data table, equipment duty summary, and PFD for the full train.
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NeqSim Separator Sizingⓘ
Three-phase horizontal and vertical separator sizing using the NeqSim thermodynamic engine. Outputs vessel dimensions, nozzle schedule, and retention time verification.
Brownfield Engineering
MOC Classifierⓘ
Classify modifications into regulatory categories A/B/C/D per 30 CFR 250. Determines BSEE/USCG/Class Society pathway and required documentation.
Regulatory Packageⓘ
AI-draft BSEE SEMS MOC package, DPP amendment, USCG notifications, and PE certification (R-01 to R-11).
Construction Work Packageⓘ
Field-executable CWP: SOW, JSA per 33 CFR 142, isolation matrix, ITP, and PSSR checklist.
Equipment List Deltaⓘ
Controlled EL change record: new, removed, modified, re-tagged equipment + affected drawing list.
Engineering Reports
Engineering Report Generatorⓘ
Generates structured engineering reports from tool outputs — Pre-FEED summary, equipment sizing basis, brownfield assessment, and custom report types. PDF export.
Pump Sizingⓘ
Centrifugal pump hydraulic sizing per API 610. Head, flow, NPSH available vs. required, driver power, and efficiency.
What These Tools Are
Pre-FEED Screening
Fast, standards-based calculations for concept selection and early cost development. AACE Class 3–4 accuracy (±20–50%).
Transparent Methodology
Every calculation references its governing standard. No black-box results — full source transparency so you can validate and trust what you see.
Your Judgment First
These tools support engineering judgment — they do not replace it. Every output requires review before use in design or construction decisions.
⚠️ Scope & Limitations
Pre-FEED and FEED engineering support only (AACE Class 3–4, accuracy ±20–50%). All calculation results require review by the user before use in design, procurement, or construction decisions. Equipment cost correlations are parametric estimates requiring calibration against current market data. All cost equations, installation factors, and analogue data are flagged for validation.
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