# 📐 L2 Spec — Well Test Analysis — transient pressure testing Mismatch-Only Spec
**ID:** `L2-291-001` · **Status:** ⊙ Testnet (genesis catalog)
**Parents:** ⬆ Principle [`L1-291`](/artifact/l1/L1-291)
> **🎯 Tolerance (ε):** expression
> **⚖ Difficulty score:** 0.48 · **Delta tier:** 5
> **⛓ On-chain block:** 41554069
---
## 1. Domain Ω
**Type:** `range`
| Parameter | Unit | Range |
|---|---|---|
| Snr db | dB | 0 – 40 |
| N times | — | 10 – 100000 |
| Boundary error | — | 0.0 – 0.3 |
| Kh prior error | — | 0.0 – 0.2 |
| Skin factor error | — | 0.0 – 0.3 |
## 2. Tolerance (ε)
**Type:** `fn`
```
1.5 + 5.0*skin_factor_error + 10.0*kh_prior_error + 5.0*boundary_error
```
## 3. Difficulty
| Property | Value |
|---|---|
| Difficulty score | 0.48 |
| Delta tier | 5 |
## 4. Fingerprint
`4d02b297dc57cf834a2ea48b3b93f09ff56b61811ead94574765179fa68329f6`
## 5. On-chain Registration
- **Chain hash:** `0x912d97282634243522a3813bd7f5885b31b1173c70286ff381d89d903f1a3eb4`
- **Chain tx hash:** `0xede26912414712ec4f1d52004170df9e1e4cb92235ebc6abfa0b456a67156fbd`
- **Chain block:** `41554069`
---
## File Mapping
This bundle consists of: `L2-291-001.md`, `L2-291-001.json`.
| File | Role | How to regenerate |
|------|------|-------------------|
| `L2-291-001.md` | Source of truth — edit this | Human or LLM |
| `L2-291-001.json` | Structured metadata for the registry | LLM regenerates from the sections above |
**Prompt for your LLM after editing this Markdown:**
> Read the attached Markdown. Regenerate the sibling `.json` so every field matches.
> Preserve the schema documented in the rows above.
> Output each file in its own fenced code block tagged with the filename.
> Output only the JSON object.
_This Markdown was auto-synthesized from the catalog row for `L2-291-001`._
_Edit it, regenerate the JSON, and submit at [/submit](/submit) to claim the artifact._