Petromium engineering workspace
Find auditable screening and planning calculators across the oil and gas value chain—without leaving your browser.
40 tools
Drilling & Well Construction
CASE-ENV-001
Direct lifecycle pressure, effective axial-force, and bending-stress profiles screened independently against controlled pipe-body and connection ratings, with thick-wall Lamé and von Mises audit.
Drilling & Well Construction
CMT-VOL-001
Single-stage primary cementing calculations with multi-interval geometry, caliper capacity overrides, lead and tail allocation, shoe track, dry material, mix water, surface or subsea displacement paths, and pump strokes.
Midstream
COMP-STAT-001
Constant-property isentropic and polytropic multistage compression with equal pressure ratios, entered intercooling, gas and driver power, limit review, and flow sensitivities.
Downstream
CV-SIZE-001
Public liquid Cv definition, declared-factor gas and steam capacity, entered choke/cavitation limits, rated-Cv margin, and idealized characteristic travel.
Midstream
CUSTODY-001
Run-by-run reference/indicated factors, explicit factor selection, entered volume correction, uncertainty RSS, and quantity reconciliation with controlled API methods visibly blocked.
Upstream Production
DCA-001
Deterministic exponential, hyperbolic, and harmonic history fits with explicit downtime exclusions, analytic cumulative volumes, finite forecast limits, and no reserves-booking language.
Drilling & Well Construction
COST-NPT-001
Reporting-window activity reconciliation with explicit operating/NPT/excluded classes, overlapping spread-rate accrual, linked direct costs, two labelled NPT denominators, Pareto attribution, and SPE bit-run cost audit.
Upstream Production
ESP-001
Total dynamic head, affinity-scaled per-stage curve interpolation, installed stages, shaft power, and min/design/max operating-window screening.
Downstream
HEATER-001
Declared HHV/LHV fuel input, direct and entered-loss efficiency, dry-O₂ excess-air screening, operating-period energy, and emissions from explicit user-entered factors.
Downstream
FLARE-001
Approved active-load aggregation, entered-property Darcy header loss, point-source receptor radiation, safe-distance inverse, and entered-factor event emissions.
Midstream
LINEPACK-001
Material-conserving mass, standard volume, entered-basis energy, current/reference working linepack, and pressure-profile sensitivity using analytic linear pressure/temperature integration.
Midstream
GAS-PIPE-001
Pressure-squared outlet-pressure and capacity calculations with standard-flow mass conversion, segment properties, Churchill friction, bisection audit, and sensitivities.
Upstream Production
GAS-DELIV-001
Pressure-squared Rawlins-Schellhardt fitting for flow-after-flow, isochronal, and modified-isochronal test sequences, with explicit stabilized anchoring, timing review, point residuals, and theoretical AOF screening.
Downstream
HX-001
Sensible hot/cold duty balance, stable LMTD, ideal parallel or counter-current epsilon-NTU prediction, service U, and apparent fouling from entered properties.
Drilling & Well Construction
HYD-ECD-001
Segmented internal and annular pressure-loss modelling, bit hydraulics, pressure reconciliation, and ECD profiles with explicit power-law or Bingham-plastic rheology and a separate measured standpipe-pressure audit.
Drilling & Well Construction
KICK-TOL-001
Weak-point-derived MAASP, independently enabled approved and equipment limits, segmented bottom-up influx geometry, check-volume audit, and a deterministic kick-intensity versus static-volume envelope.
Midstream
LIQ-PIPE-001
Segmented Darcy-Weisbach pressure, hydraulic-grade, elevation, fitting-loss, entered pump-head, vapor-margin, and additional required pump-power screening.
Drilling & Well Construction
MUD-WD-001
Material-balance calculations for dry-material weight-up, density dilution, stock-fluid blending, and drilled-solids dilution with explicit add-only or hold-volume strategies and editable material properties.
Upstream Production
IPR-001
Linear PI, Vogel, and continuous composite inflow curves with productivity-index, stabilized-test, or radial-Darcy calibration, future reservoir-pressure cases, and measured point residuals.
Midstream
PIG-PLAN-001
Segmented displaced volume, piecewise-flow swept-volume integration, checkpoint timing, low/nominal/high receipt windows, and target-duration inverse flow from explicitly entered speed factors.
Midstream
HYDROTEST-001
Geometric fill volume, medium mass, pump quantity, elevation-dependent static pressure, entered pressure-window margins, and descriptive pressure/temperature/volume records without test authorization or acceptance inference.
Midstream
PIPE-MAOP-001
Transparent 49 CFR 192.105 gas and 49 CFR 195.106 liquid formula screening with wall adequacy, inverse required wall, declared pressure candidates, sensitivities, and controlled-code blocks.
Downstream
PSV-001
Approved external load, public liquid Bernoulli area, entered vapor/steam mass flux, pressure basis, selected-area margin, and explicit safety blocks.
Upstream Production
PTA-001
Manual liquid-well semilog drawdown and Horner buildup screening with an explicit user-selected straight-line interval, permeability, skin, and a complete row audit.
Upstream Production
NODAL-001
Bottomhole-node operating points from the released oil IPR or gas deliverability engine and single-phase tubing outflow, with deterministic dependency fingerprints, all physical roots, and retained sensitivity failures.
Upstream Production
SEP-SIZE-001
Vertical or horizontal Souders-Brown gas-capacity and combined-liquid retention screening with explicit entered K, retention, surge, and geometry assumptions.
Midstream
PUMP-STAT-001
Exact intersections between entered piecewise-linear pump curves and quadratic system resistance, with identical series/parallel arrangements, speed affinity, power, NPSH, and sensitivity screening.
Upstream Production
PVT-001
Correlation-based black-oil and natural-gas properties with DAK z-factor iteration, Standing oil behavior, Lee gas viscosity, Beggs-Robinson oil viscosity, acid-gas correction, range screening, and pressure sensitivity.
Downstream
BLEND-001
Entered-data mass recipe, derived volume and density, cost, declared property rules, bounds, and a transparent two-component exact-target solve.
Upstream Production
RES-MB-001
Volumetric dry-gas p/z regression and a declared oil F/E tank with entered PVT, gas-cap, compressibility, and water influx terms—without automatic drive or aquifer selection.
Downstream
DISTILL-001
Entered-property Fenske minimum stages, bracketed Underwood minimum reflux, Gilliland operating stages, component splits, and approximate condenser/reboiler duties.
Downstream
STEAM-001
Fixed boiler, header, turbine, PRV/process, trap, flash and return network with entered enthalpies, mass residuals, component closures, and condensate KPIs.
Drilling & Well Construction
SURGE-SWAB-001
Steady-state tripping pressure screening with explicit empirical factors, segmented moving-string geometry, surge and swab equivalent-density profiles, and independent pore- and fracture-boundary speed calculations.
Midstream
TANK-INV-001
Upright-cylinder geometry or entered height-volume interpolation, free-water deduction, entered-factor corrected inventory, mass, ullage, and opening-to-closing transfer imbalance.
Downstream
TANK-VENT-001
Vertical fixed-roof headspace, displacement and thermal breathing, approved emergency demand, entered vent-capacity margins, and transparent entered-concentration losses.
Drilling & Well Construction
TDRAG-001
Minimum-curvature trajectory reconstruction with bottom-up pickup, rotating, and slack-off force profiles, interval-specific axial and rotational friction, optional measured residuals, and user-entered limit margins.
Drilling & Well Construction
TRIP-TALLY-001
Connection-aware string displacement, hole-fill and return planning, pump strokes, trip-tank level, unfilled hydrostatic reduction, and a row-by-row comparison of expected and separately entered observed volume.
Upstream Production
VLP-001
Segmented steady-state pressure profiles for single-phase liquid and entered-property gas, with top or bottom boundary integration, production and injection signs, Churchill friction, component audit, and retained VLP rate cases.
Downstream
FLASH-001
Rachford-Rice material balance with pinned C1-C3 Peng-Robinson fugacity iteration, advanced entered K-values, explicit datasets, interactions, and residuals.
Drilling & Well Construction
WC-VERT-001
Vertical-well Wait & Weight and Driller's Method calculations with KMW, ICP, FCP, volumes, strokes, pressure schedules, LOT-based allowable annular pressure, subsea CLFL review, and explicit calculation observations.