A-05 · Producer (horizontal) · Alpha Platform

spud 12 Mar 2014 · 4½″ tubing × 9⅝″ casing · toe 4,200 m MD Method profile: demo-offshore v0 (placeholder, unsigned)

Illustrative values — placeholder method bands; no signed method profile (Gate B)

Wellbore register 20″ 0–80 m · 13⅜″ shoe 800 m MD · 9⅝″ shoe 1,900 m MD · cement top 1,180 m MD · 5½″ screens 1,900–4,200 m MD · packer 1,500 m MD · DHSV 210 m MD · KOP 900 m MD · toe 4,200 m MD · A = tubing × 9⅝″ csg · B = 9⅝″ × 13⅜″ csg (13⅜″ shoe breakdown governs) · C cemented, not monitored · placeholder bands: normal < 60% · elevated 60–100% · exceedance > 100% of MAWOP

Barrier schematic

generated from register

flagged gap / assumption not to scale · MD compressed at the break 1 data assumption

Annuli vs MAWOP

operator-supplied MAWOP

Annulus	Reading	MAWOP	Band
A	11.6	69.0	normal
B	22.6	34.5	elevated 65%
C	cemented	n/a	not monitored

Why yellow — placeholder rules fired

Sustained-rise rule (trend)≥ 0.25 barg/month · 6 readings

Assumed fluid column (data rule)B fluid top not recorded

Integrity tests

Test	Last done	Result	Next due
Annulus pressure test (B)	04 Oct 25	pass	04 Oct 26
Valve integrity test	12 Jun 26	pass	12 Jun 27

Barrier elements — two-envelope model

all verified

Element	State	Verification
Primary · 4½″ tubing	verified	12 Jun 26 · WIT
Primary · production packer @ 1,500 m	verified	12 Jun 26 · WIT
Primary · DHSV (SCSSV) @ 210 m	verified	12 Jun 26 · function test
Primary · Xmas tree + wing valve	verified	12 Jun 26 · WIT
Secondary · 9⅝″ casing + cement	verified	tally + cement top
Secondary · 13⅜″ casing + cement	verified	tally · cement to surface
Secondary · 20″ conductor + spigot	verified	04 Oct 25 · inspection

Provenance

Assessmentautomatic · no overrides Inputsdemo dataset v1 (illustrative) Method profiledemo-offshore v0 (placeholder — not signed) Method bandsplaceholder: normal < 60% · elevated 60–100% · exceedance > 100% of MAWOP