WorkflowDrilling, Wells & Decommissioning

Plug and Abandonment Planning

Plug and abandonment planning that drafts each well's plugs from its reviewed file, tests the plan against your rules, and finds the well that does not fit before the rig does.

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Follow the misfit well from board to consent ↓

The problem

A liner nobody logged, hidden in a family of easy wells

Each well's abandonment plan gets worked out on its own, from a file that may be decades old. Wells that could go one after another on the same rig, with the same plugs and the same method, are costed as if each stood alone.

The opposite mistake costs more. A well that looks like its neighbours on a list, but whose liner cement was never proven, gets planned like them and found out offshore, with the rig and the crew waiting for a milling package.

Built forAbandonment well engineersAbandonment managersRig campaign plannersRegulatory liaisonsAssurance reviewers

The Problem Today

Each well is planned alone from old files, so wells that could share a rig and a method are costed as if alone.

Half: of one national decommissioning estimate to 2032 is wells published
2: permanent barriers required for each zone that can flow published

Planned well by well today

Schematics
Plug depths
Rule checks
Rig days

Unproven cement slips inA liner never logged looks like its neighbours
Offshore findings stay putA finding reaches one well's plan, not its family

The Solution

Plan drafted, citedEach plug depth from the reviewed well file, with the page behind it
Checked rule by ruleEach plan tested against the rule set the company loaded
Grouped into familiesWells of one shape share a rig and a method; a misfit is lifted out
Consent request draftedFrom the plan, for the engineer to sign and the manager to countersign

Built-in controls

Methods and requests carry two names
Agents never sign, submit or advise on safety
Rules relaxed only with the manager's signature

What You Get

Planners book rig windows on plans that truly match, and the one well that does not is found before the rig.

66.8: fewer rig days on the sample wells, 412.0 down to 345.2 our estimate
$23.0M: less in the planned cost of the same wells our estimate

Misfits found earlyA liner never logged is lifted out, with the record
Each rule on each wellWith the clause and the page, and the few that need a person
Consent requests ready to signEach value cited, signed twice, submitted on the clock

One campaign, one misfit

86 wells, five families, and the plug and abandonment well that did not fit

Three of a field's oldest platforms have 86 wells with no further use. Planned one at a time they take 412.0 rig days. Grouped by shape, far fewer, if each family is what it looks like.

demoPlatforms, wells, rig, rates and people are sample data, as is each figure.

01Planning
Each well drawn as its plug plan, in families by shape and columns by campaign
Rig campaign planner
The board shows 86 small well drawings in five families: one casing, liner, two reservoirs, annulus pressure, sidetracked. Two totals sit side by side: one by one, as the files stood, and as families on four campaigns, labeled an estimate. The planner can drag a well between campaigns on its platform; a move is only a proposal until the manager signs.
02Planning
Family 2 looks like 18 easy wells, until one lifts out on its own
Rig campaign planner
Clicking the lone stick in Campaign 2 opens 9-144: a liner well with one reservoir, 11.4 rig days on its own with a milling package, and two checks that need a person. Every other liner well in the family has its cement proven by a bond log. This one does not.
03Engineering
A plug inside the liner counts only if the cement behind it is proven
Abandonment well engineer
The well page draws 9-144 large, with its plugs and their depths, each cited to the reviewed well file. Three methods are offered. The estimate carries the slowest until the engineer signs one, and the log-based family plan stays greyed out, because no log has been run.
04Engineering
145 bbl lost to the formation, and no bond log run
Abandonment well engineer
The cited page is the liner cement job report: 180 bbl of slurry pumped, severe losses, 145 bbl lost, plug bumped, and no bond log because the logging unit was not on the rig. That one line is why a family plan would have put an unproven barrier in the hole.
05Engineering
He signs section milling, with his reason, and it waits for the manager
Abandonment well engineer
The engineer picks milling 100 ft of liner across the cap rock for a rock-to-rock plug, and types why. Once signed, the method locks; changing it means withdrawing his signature, so the manager cannot countersign a method he did not choose.
06Engineering
Countersigned: the method now stands with two names on it
Abandonment manager
The abandonment manager reads the engineer's reason and the cement record, then countersigns. The well also sits in the ten-well sample she must open before the campaign plan can be signed, and the screen now shows she has opened it.
07Consent
A consent request drafted from the plan, with a citation behind each value
Abandonment well engineer
For 9-121, a Family 2 well in Campaign 1, the request lays out the well today, the plugs proposed, tests, casing removal and the rule checks, each value numbered to its page. The engineer ticks that he has read it, then signs. A second person countersigns before anyone submits.
08Consent
Countersigned, and the next step is the liaison's, on the company's clock
Abandonment manager
The manager opens the request, then countersigns it. Submitting it is the regulatory liaison's job, by the company's own clock of 90 days before the campaign starts. Agents drafted the document, with every value cited; they do not sign it or submit it.
09Planning
412.0 rig days one by one; 345.2 as families, an estimate
Abandonment manager
The estimate sets the two views side by side, by campaign and by family, with the rig schedule beneath. 66.8 rig days fewer and $23.0M less at 100%, from the sample durations and rates. It is labeled an estimate, not a quote, and it does not change the liability book.

345.2 rig days, family by family, with 9-144 on its own

Rig days for each family in batch, the misfit priced at the slowest method until a person signs one.

Family 1, one casing	55.2
Family 2, liner, without 9-144	62.9
9-144, section milling, alone	11.4
Family 3, two reservoirs	76.5
Family 4, annulus pressure	84.0
Family 5, sidetracked	55.2
Rig days as families	345.2

estimatedOur estimate. Planned one by one, as the files stood, the same wells take 412.0 rig days.

Around the campaign

The offshore finding, the sample and the rule set behind P&A campaign planning

What the engineer, the manager and the liaison work through before the plan can be signed.

Pre-abandonment survey results by well, with one well's pressure between casings rebuilt after bleed-down and a proposed plan change — **Offshore findings**9-130 read 680 psi between casings and rebuilt to 640 psi in 24 hours. A proposed family change waits for the engineer; the screen gives no advice on the pressure.

One family of liner wells drawn side by side, with the well whose liner cement was never verified marked as lifted out — **One family, side by side**Family 2's wells drawn next to each other with their liner depths and cement proof, and the misfit marked where it was lifted out.

Campaign plan sign-off with the proposer, the due date, a ten-well sample still to open, and the reasons signing is blocked — **Campaign plan sign-off**The largest decision: which rig works which wells, for how many days. The manager opens a ten-well sample first, and open questions keep the sign button off.

Consent requests by campaign, each well with its family, status, what it waits on, plug count and rig days — **Consent requests**One request per well, drafted from its plan. Campaign 1 has 33, with 3 blocked by record questions or the offshore finding.

Well barrier verification rules with counts of wells met, not needed and needing a person, and the source of each rule — **The loaded rule set**860 checks: 707 met, 145 not needed for the well's shape, 8 that need a person, none failed. Each rule shows where its value came from.

Audit trail for an abandonment program: agent steps, signatures, countersignatures and the loaded rule set — **Audit trail**The agents' run and each person's decision with its reason, newest first. Entries cannot be edited or deleted, and the trail exports as evidence.

demoSample data, from the working solution.

Four roles, and nobody countersigns their own work

Each signature reads a different record first.

Rig campaign planner

Sees: The board, families and rig windows
Signs: Proposes the campaign plan and moves wells between campaigns

Abandonment well engineer

Sees: Each well's file, plugs and the rule checks
Signs: Methods for misfits, record questions, and each consent request

Abandonment manager

Sees: The engineer's reasons and a sample of wells
Signs: Countersigns methods and requests, and signs the campaign plan

Regulatory liaison

Sees: Countersigned requests and the company's clock
Signs: Submits the requests and answers questions back

The planners' helpers

Seven agents draft and group, and none of them signs a plug

Each has a line it may not cross.

Well data reader

Reads each reviewed well file into casing, cement tops and how proven, perforations, tests and pressures, each with its page.

Never fills a gap without flagging it

Plug plan drafter

Drafts each well's plugs from its state and its family plan.

Never places a barrier over unproven cement
Never signs

Rule checker

Tests each plan against the loaded rule set, rule by rule, with the clause and the record.

Never relaxes a rule
Sends an unclear clause to the engineer

Family grouper

Groups wells of one shape and one method and lifts out any misfit, with the reason.

Never hides a misfit

Campaign estimator

Works out rig days and cost from family durations and loaded rates, labeled as estimates.

Never presents an estimate as a quote

Consent drafter

Drafts each request from its plan, with a citation behind each value.

Never submits
Never changes a signed plan

Field change watcher

Reads survey results and daily reports, finds the plans they affect and proposes the change.

Never tells a crew what to do

Calls that stay with abandonment engineers

The agents draft, check and group. People decide what goes in the hole.

A barrier over unproven cement is never draftedWhere the cement behind a plug is not proven, the well leaves its family and an engineer chooses the method.

A log-based plan needs a logThe cheaper family plan for the misfit cannot be chosen until a bond log result is loaded.

Pressure at a well is a person's callAn offshore finding becomes a proposal for the engineer, with no advice on bleeding or working the well.

No request leaves without two names and a person to submit itThe engineer signs, the manager countersigns, the liaison submits.

What abandonment teams ask about plug and abandonment planning

What is plug and abandonment planning?

Plug and abandonment planning works out how each well will be permanently sealed: which plugs go where, how each is tested, and how long the rig needs. Here, plug and abandonment plans are drafted from each reviewed well file, checked against your rule set, and grouped into families that can share a rig and a method.

How does it decide which wells share a family?

By shape and method: casing, liner, number of reservoirs, annulus pressure, sidetracks. A well that matches on a list but has unproven cement, or a new offshore finding, is lifted out, and the screen says why.

Does it check our well abandonment plan against the rules?

Yes. Every plan is tested rule by rule against the rule set your company loaded, with the clause and the page behind each result. Checks that need judgment go to the engineer, and a rule can be relaxed only with the manager's signature.

Are the rig days and costs a quote?

No. They are estimates from family durations and the rates you load, labeled as such. They do not change the liability book.

What happens when an offshore survey finds something new?

The finding is read against the plans it affects and turned into a proposed change for the engineer. The affected well's consent request and the campaign plan stay blocked until a person decides.

Who submits the consent requests?

The regulatory liaison, after the engineer has signed and the manager has countersigned. Agents draft the requests and never submit them.

Drilling, Wells & Decommissioning

Send us one platform's
reviewed well files.

We will draft each well's plugs, group them into families, and show you which well does not belong.

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Plug and Abandonment Planning

A liner nobody logged, hidden in a family of easy wells

The Problem Today

The Solution

What You Get

86 wells, five families, and the plug and abandonment well that did not fit

Each well drawn as its plug plan, in families by shape and columns by campaign

Family 2 looks like 18 easy wells, until one lifts out on its own

A plug inside the liner counts only if the cement behind it is proven

145 bbl lost to the formation, and no bond log run

He signs section milling, with his reason, and it waits for the manager

Countersigned: the method now stands with two names on it

A consent request drafted from the plan, with a citation behind each value

Countersigned, and the next step is the liaison's, on the company's clock

412.0 rig days one by one; 345.2 as families, an estimate