equinor/neqsim

NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation

This repository also configures its own agents. See what neqsim tells them →

156Stars on the repository
303Mods indexed here, across every type
todayLast push, which is what freshness is scored on
Apache-2.0Licence, which decides whether bodies are shown

analyze_convergence

01

equinor/neqsim

Skill Claude CodeCodex

Interpret flash algorithm convergence metrics, identify patterns, and produce.

not rated 156 changed 1mo ago A SkillSpector: pass 16 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Interpret Gibbs energy minimization convergence metrics, analyze Jacobian.

not rated 156 changed 1mo ago A SkillSpector: warn 19 tokens original Apache-2.0

book_creation

03

equinor/neqsim

Skill Claude CodeCodex

PaperLab skill for book creation workflows in scientific writing and book production.

not rated 156 changed 1mo ago A SkillSpector: warn 17 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Create a structured test matrix for comparing flash algorithm performance.

not rated 156 changed 1mo ago A SkillSpector: pass 15 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Create a structured test matrix for evaluating Gibbs energy minimization.

not rated 156 changed 1mo ago A SkillSpector: pass 17 tokens original Apache-2.0

figure-discussion

06

equinor/neqsim

Skill Claude CodeCodex

PaperLab skill for figure discussion workflows in scientific writing and book production.

not rated 156 changed 27d ago A SkillSpector: pass 18 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Create matplotlib figures that meet journal submission standards: correct fonts.

not rated 156 changed 1mo ago A SkillSpector: pass 18 tokens original Apache-2.0

journal_formatting

08

equinor/neqsim

Skill Claude CodeCodex

Apply journal-specific formatting rules to transform a manuscript from Markdown.

not rated 156 changed 1mo ago A SkillSpector: pass 15 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Agent-to-agent communication schema for NeqSim. USE WHEN: composing multi-agent pipelines where one agent's output feeds another agent's input. Defines structured result formats for fluid definitions, simulation results, and design outputs that agents can pass to each other.

not rated 156 changed 20d ago A SkillSpector: pass 56 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Agentic closed-loop optimization of large multi-area NeqSim ProcessModel plants with convergence gating and equipment introspection. USE WHEN: an agent must optimize a live full-plant flowsheet (setpoints, compressor pressures, heater temperatures, routing fractions) across years/scenarios with surge/RVP/spec…

not rated 156 changed 20d ago A SkillSpector: pass 104 tokens original Apache-2.0

neqsim-api-patterns

11

equinor/neqsim

Skill Claude CodeCodex

NeqSim API patterns and code recipes. USE WHEN: writing Java or Python code that uses NeqSim for thermodynamic calculations, process simulation, or property retrieval. Covers EOS selection, fluid creation, flash calculations, property access, equipment patterns, and unit conventions.

not rated 156 changed 4d ago A SkillSpector: pass 60 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Autonomous observe-hypothesize-predict-test-discriminate loop for operational anomalies. USE WHEN: solving a PEPR action, root-cause or operational study where the symptom, driver or important relationships are NOT given up front. Uses neqsim.process.diagnostics.RelationshipGraph for lead-lag relationship discovery…

not rated 156 changed 12d ago A SkillSpector: pass 84 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Structured inventory of NeqSim's capabilities by engineering discipline. USE WHEN: checking what NeqSim can do, planning implementations, assessing gaps for engineering tasks, or routing work to the right agent. Covers thermodynamics, process equipment, PVT, standards, mechanical design, flow assurance, safety, and…

not rated 156 changed 12d ago A SkillSpector: pass 69 tokens original Apache-2.0

neqsim-ccs-hydrogen

14

equinor/neqsim

Skill Claude CodeCodex

CO2 capture, transport, storage (CCS) and hydrogen systems patterns for NeqSim. USE WHEN: modeling CO2 pipelines, injection wells, impurity effects on phase behavior, CO2 dense phase transport, hydrogen blending, electrolysis, or any CCS/H2 value chain analysis. Covers CO2 phase behavior, impurity management, well…

not rated 156 today A SkillSpector: pass 85 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Anti-surge recycle and coordinated minimum-speed recycle control for centrifugal compressors in NeqSim: chart generation, anti-surge calculation, MinimumSpeedRecycleControllerStructure split-range control, fuel-gas, CO2 and cost savings. USE WHEN: a task must protect a compressor from surge, coordinate speed and…

not rated 156 changed yesterday A SkillSpector: pass 95 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Quantitative consequence analysis - jet/pool fire, VCE, BLEVE, Gaussian and heavy-gas dispersion, probit fatality, individual and societal risk. USE WHEN: a task requires fire-radiation contours, dispersion to LFL/IDLH/ERPG, BLEVE thermal/missile assessment, or QRA-style integration of release outcomes. Anchors on…

not rated 156 changed 20d ago A SkillSpector: warn 97 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Process controllability and operability — operating envelope mapping, turndown analysis, startup/shutdown sequencing, control valve sizing per ISA-75 (Fl, Fp, choked flow), rangeability, hunting/loop tuning, recycle stability. USE WHEN: a task involves operability assessment, turndown studies, control valve sizing…

not rated 156 changed 29d ago A SkillSpector: warn 110 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Emergency depressurization (blowdown) per API 521 and MDMT assessment per ASME UCS-66 / API 579 / EN 13445 with a VU-flash transient model. USE WHEN: sizing a blowdown valve, producing a P-vs-time curve under fire or depressurization, checking MDMT against blowdown end-temperature, supplying relief/flare source terms…

not rated 156 changed 20d ago A SkillSpector: warn 111 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Distillation column design rules for NeqSim. USE WHEN: setting up distillation columns, troubleshooting convergence, selecting internals (trays/packing), sizing columns, or analyzing column performance. Covers DistillationColumn setup, solver selection, feed tray optimization, reflux ratio, and internals selection per…

not rated 156 today A SkillSpector: warn 69 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Classify mixed engineering documents and images, route native text/table, OCR, and vision extraction, and produce source-traceable evidence packages with confidence and human-review gates. USE WHEN: a NeqSim task receives PDFs, scans, Word/Excel files, drawings, charts, photographs, or multiple conflicting engineering…

not rated 156 today A SkillSpector: pass 72 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Implement and test NeqSim process-equipment runTransient support. USE WHEN: adding dynamic simulation behavior to any ProcessEquipmentInterface class, including inventory volume, pressure/level/temperature state, controller response, and JUnit regression tests for transient timesteps.

not rated 156 changed today A SkillSpector: pass 60 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Dynamic simulation guidance for NeqSim. USE WHEN: running transient simulations, modeling startup/shutdown, tuning PID controllers, analyzing pressure/level dynamics, performing blowdown/depressurization, or setting up measurement devices and control loops. Covers runTransient, DynamicProcessHelper, controller tuning…

not rated 156 changed today A SkillSpector: pass 70 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

Electrolyte and brine chemistry guidance for NeqSim. USE WHEN: modeling produced water, scale prediction, CO2/H2S in aqueous systems, MEG/DEG injection, hydrate inhibitor dosing, or any system with ions, salts, or electrolytes. Covers SystemElectrolyteCPAstatoil setup, ion components, scale risk assessment, and brine…

not rated 156 changed 1mo ago A SkillSpector: pass 90 tokens original Apache-2.0

equinor/neqsim

Skill Claude CodeCodex

EOS parameter regression workflow for fitting equation-of-state models to experimental data. USE WHEN: tuning binary interaction parameters (kij), matching saturation pressures, fitting PVT data (CME, CVD, DL), characterizing C7+ fractions, or validating EOS predictions against lab measurements. Covers SRK, PR, CPA…

not rated 156 changed 4d ago A SkillSpector: pass 75 tokens original Apache-2.0

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