neqsim-surf-field-layout-design

neqsim-surf-field-layout-design is a skill for Claude Code, Codex from equinor/neqsim-community-skills. It costs 220 tokens per session (4,704 once invoked), scanned A, original, Apache-2.0.

A concept-design tool for laying out a subsea production system from well count, reservoir area, and water depth. It places equipment such as drill centres, manifolds, flowlines, risers, umbilicals, and a host facility on a map.

In plain words
What is it for?
It helps choose a flowline architecture, group wells, position the host and subsea equipment, size lines using flow velocity, and export coordinates for mapping or GIS.
Why use it?
It turns an undeveloped field concept into a connected screening layout with approximate routes and sizes for early planning.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps choose a flowline architecture, group wells, position the host and subsea equipment, size lines using flow velocity, and export coordinates for mapping or GIS.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/neqsim-community-skills/surf-field-layout-design
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add equinor/neqsim-community-skills --skill surf-field-layout-design
Clone the repo
git clone --depth 1 https://github.com/equinor/neqsim-community-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for neqsim-surf-field-layout-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/surf-field-layout-design/github.svg)](https://agentmods.dev/skills/equinor/neqsim-community-skills/surf-field-layout-design)
Your own site
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/surf-field-layout-design"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/surf-field-layout-design/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for neqsim-surf-field-layout-design

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/neqsim-community-skills/surf-field-layout-design"><img src="https://agentmods.dev/badge/skills/equinor/neqsim-community-skills/surf-field-layout-design.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 220 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,704 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00220 $0.04704
Opus 5 $0.00110 $0.02352
Sonnet 5 $0.00044 $0.00941
Haiku 4.5 $0.00022 $0.00470

Measured 7d ago against content hash 859f1382c215, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

neqsim-surf-field-layout-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

The scan reads SKILL.md. This mod also ships 13 executable files (examples/design_barents_style_layout.py, src/surf_field_layout_design/__init__.py, src/surf_field_layout_design/geo.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/subsea/surf-field-layout-design/SKILL.md · 355 lines

How it starts

The opening of the file, as written. The whole thing — 355 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SURF Field Layout Design

Use this skill to turn a well count, a reservoir footprint and a water depth into a placed and routed subsea layout: drill centres, wells, Xmas trees, templates and manifolds, PLEMs, riser bases, the host, and every flowline, riser and umbilical between them — each line sized on velocity and each item carrying a latitude and longitude so the result drops straight into a map or a GIS.

It is the design counterpart to neqsim-subsea-layout-geometry, which screens a layout that already exists. Use this skill first to create the layout, then that skill to screen step-outs, and neqsim-pipe-route-profile to put the routes on a real seabed profile.

When to Use

  • A concept study needs a subsea architecture before any layout drawing exists.
  • The number of drill centres, templates and Xmas trees must follow from the well count and the slots per template.
  • The host has to be placed relative to the field, and the riser base with it.
  • A flowline architecture must be chosen: a round-trip-piggable dual loop, one dedicated line per drill centre, or a daisy chain.
  • Flowline, riser and injection-line sizes are needed at a screening level.
  • Total flowline, riser and umbilical lengths are needed for a SURF cost estimate.
  • The layout must be georeferenced — on a licence block, on a map, as GeoJSON.
  • A production-network or flow-assurance model needs node positions and segment lengths.

Do not use it for detailed routing, crossing design, on-bottom stability, free-span, expansion, installation or mooring analysis.

Inputs

Group Fields
Identity and position field_name, centre_latitude_deg, centre_longitude_deg, water_depth_m
Wells producers, water_injectors, gas_injectors, slots_per_template, slot_spacing_m
Footprint reservoir_length_km, reservoir_width_km, field_axis_bearing_deg, injector_offset_km, seabed_slope_deg
Host host_type, host_offset_km, host_bearing_deg, riser_base_offset_m
Architecture production_architecture (dual_loop, single_line, daisy_chain)
Sizing design_liquid_rate_m3_per_s, design_water_injection_rate_m3_per_s, design_gas_injection_rate_am3_per_s, densities, target velocities

Read the full file on GitHub · 355 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago Changed · +98 lines · +31 tokens per session 859f1382c215
  2. 9d ago First seen · 257 lines · 189 tokens per session scan A 2e5aadd53135

Subscribe to this mod's changes

neqsim-surf-field-layout-design is a skill published in the GitHub repository equinor/neqsim-community-skills (2 stars, last pushed yesterday), licensed Apache-2.0. It adds 220 tokens to every session and 4,704 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

gke-compute-classes

Configures, optimizes, and troubleshoots GKE ComputeClasses. Use when configuring Spot VMs with on-demand fallback, targeting specific accelerators (GPUs/TPUs) or machine families, restricting ComputeClass access, or debugging pending pods related to node pool auto-creation. Do not use for cluster-level Node Auto…

google/skills · 83 tokens

jetson-diagnostic

Read-only Jetson health snapshot for identity, memory, GPU, thermal, power, storage, services, and top processes.

NVIDIA/skills · 30 tokens

doca-socket-relay

Use this skill when the operator is driving the DOCA Socket Relay to bridge a socket-oriented host application onto a BlueField DPU peer without rewriting it — picking the deployment shape (in-process, sidecar, or BlueField service container), configuring the host-side socket and the DPU-side forwarding endpoint…

NVIDIA/skills · 236 tokens

offensive-z-wave

Z-Wave attack methodology — sniffing with Z-Force / EZ-Wave / RTL-SDR + ZniffMobile, S0 (legacy) network-key derivation flaw and key reuse, S2 (modern) ECDH commissioning analysis, replay/injection on unauthenticated nodes, default-key brute-force on test deployments, and home-automation hub pivots. Use when targeting…

SnailSploit/Claude-Red · 113 tokens

hsb-flash

Flash the FPGA on an HSB board connected to an NVIDIA devkit. Supports HSB Lattice boards (FPGA versions 2407, 2412, 2507, 2510) and Leopard Imaging VB1940 "all-in-one" cameras (FPGA versions 2507, 2510). Uses release-specific YAML manifests and board-type-specific program commands. Lattice and VB1940 commands must…

NVIDIA/skills · 94 tokens

jetson-validate-image

Use after jetson-flash-image to run static BSP checks, on-target smoke/regression tests on a flashed DUT, or both. Not for build or flash steps. Triggers: validate bsp, on-target validation.

NVIDIA/skills · 50 tokens