Petrophysics & Logs
11 petrophysics workflows for LAS QA, log viewing, Vshale, net pay, Archie saturation, Pickett, N-D crossplots, and multi-well comparison. Petrophysicists can turn raw curves into cutoff tables and pay summaries with the assumptions visible.
What it solves
Turn raw logs into auditable reservoir properties
A pay interpretation can change when 5 inputs drift: LAS quality, mnemonic mapping, Vshale method, net-pay cutoff, and saturation equation. This suite keeps those assumptions visible so petrophysicists and reservoir engineers can audit how curves became pay, phi, Sw, and volumetric inputs.
Use it to inspect LAS files, calculate Vshale and net pay, build Pickett and N-D crossplots, estimate Archie saturation, and prepare multi-well QA. The workflows help teams move from raw logs to cutoff tables, pay summaries, and crossplots before static models or reserves maps are updated.
Who it's for
- Petrophysicists building Vshale, porosity, Sw, and net-pay interpretations across wells
- Reservoir engineers validating cutoff tables before volumetrics, maps, and reserves updates
- Geoscience teams standardizing LAS mnemonics and comparing type logs across fields
What you can do
Quality-check LAS data and calculate the petrophysical properties that feed pay, volumetrics, and reservoir models.
QA raw LAS files
Inspect curves, units, nulls, depth ranges, and mnemonic consistency before interpretation starts.
Calculate shale volume
Apply gamma-ray and shale corrections to build consistent Vshale curves for clean and shaly intervals.
Define net pay
Combine Vshale, porosity, saturation, and thickness cutoffs into transparent pay summaries.
Estimate water saturation
Use Archie and shaly-sand methods where valid, with documented constants and assumptions.
Build diagnostic crossplots
Use Pickett, type-log, and N-D crossplots to reveal lithology, fluid, and cutoff behavior.
Compare wells consistently
Prepare multi-well LAS comparisons and standard mnemonic mapping for field-scale interpretation.
Support volumetrics
Generate auditable petrophysical inputs for net-to-gross, porosity, Sw, and hydrocarbon pore volume.
Export interpretation packages
Create report-ready outputs for reservoir, geoscience, and reserves review.
What’s behind the wall
A purpose-built workflow stack for the specific decisions this discipline runs daily. Specific workflows aren’t listed publicly — every paid customer gets a guided walkthrough of what’s there before they commit. The $1,000 / 30-day intro counts toward your first month if you continue.
60 sec
From raw data to a screened result you can take to the next decision-maker.
One-page report
PDF or XLSX output that drops straight into the standard engineering toolchain your audit firm already uses.
Named engineer
Pro tier ($2,499/mo) includes a Stanford-PhD reservoir engineer on retainer, capped 1–2 hrs/mo for your workflows.
Compare: legacy reserve-evaluation cycles run 4–8 weeks at $50–250K per engagement. Subscription seat licenses for the major commercial DCA platform start at $40K+/seat/yr. Our intro is $1,000 for 30 days, applied as credit toward the first month if you continue.
Book a guided walkthroughHow customers use this
Defensible answer before a review
An engineer brings raw production, pressure, or operating data into the workspace and leaves with a screened result that can be defended in front of the asset team, audit committee, RBL banker, or A&D buyer — without a multi-week consulting engagement.
Independent second opinion in 72 hours
When the deadline is the LOI clock, the credit-committee date, or the next reserves cycle, the suite turns existing public and operational data into a red-flag memo and one-page report that lets the decision-maker move with confidence in days, not weeks.
Engineering Context
Built on validated petroleum engineering correlations
Petrophysics workflows turn LAS data, log quality checks, shale volume, saturation, net pay, crossplots, and curve standardization into auditable interpretation outputs.
Petropedia explain the engineering context and interpretation. Implementation details, validation logic, and production workflows remain private.
Frequently asked questions
Can I use custom cutoffs and Archie constants?
Yes. The workflows are built around explicit cutoffs and constants so users can match local rock, fluid, and log conditions. The output should be reviewed against core, tests, mud logs, and regional interpretation standards before reserves use.
Can I try before buying?
Yes. Run the public sample workflow above with our sample data. To use your own data, save runs, and export reports, you'll need a Standard subscription.
What's the difference between Standard and Pro?
Standard covers single-well, single-run analyses with saved results and standard exports. Pro adds advanced workflows such as batch analysis, probabilistic outputs, type curves, Monte Carlo, advanced reports, and priority support where those workflows are available for the suite.
Is my data private?
Yes. Uploaded files and saved runs are scoped to your account, encrypted in transit (HTTPS) and at rest. We do not share or sell your data. Enterprise customers can opt for private workspace deployment with private workflows.
Choose your plan
Standard
$999/mo
per user
- Full suite access
- Real data input & file upload
- Saved runs & exports (CSV, PDF)
- Email support from Groundwork Analytics
- Maintenance & feature requests
Pro
$2,499/mo
per user
- Everything in Standard
- Advanced workflows + larger datasets
- Batch + multi-asset reviews
- Probabilistic / uncertainty outputs where applicable
- Named Stanford-PhD reservoir engineer, capped 1–2 hrs/mo
- Priority support for reserves-cycle deadlines
Enterprise
Custom
annual contract
- Everything in Pro
- Team seats (3+ users)
- API access & data connections
- Custom workflow development
- Dedicated engineering hours
- SLA & priority onboarding
- Multi-suite bundles
Don't see a fit?
If a standard suite doesn't match the problem you're solving, tell us what you need. We meet, scope the work, and send a quote for a custom app or workflow built around your asset and data.
Email info@petropt.com