Legal Land Descriptions for Well Closure

Alberta's well closure industry runs on legal land descriptions. The AER tracks over 466,000 wells across the province, every one identified by a DLS location — Legal Subdivision, Section, Township, Range, and Meridian. When a well reaches end of life, the closure application, the environmental site assessment, the downhole abandonment report, and the reclamation certificate all reference that same LSD. If you work in well closure, decommissioning, or site remediation in Alberta, legal land descriptions are part of every job.

The AER's closure spending mandate for 2026 exceeds $750 million. The Orphan Well Association manages thousands of additional sites. Every one of those closures generates paperwork tied to a legal land description — and every field visit starts with converting that description to GPS coordinates.

Why Legal Land Descriptions Matter in Well Closure

The AER requires well locations in DLS notation on every closure-related filing. This includes Directive 013 suspension and abandonment applications, Directive 079 surface reclamation reports, and the environmental site assessments that accompany Phase I and Phase II investigations.

A legal land description is precise in a way that informal location references are not. "South of Drayton Valley" could mean dozens of townships. LSD 10-33-037-04W5 means exactly one 40-acre parcel near Sundre, identifiable on every regulatory database and survey map in the province.

That precision matters when a closure company is managing 200 active sites across central Alberta. The LSD is the primary key that connects the well licence to the abandonment application to the surface lease to the reclamation certificate. Getting it wrong on any of those documents creates delays.

Survey Systems Used in Well Closure

DLS and LSD

The Dominion Land Survey is the addressing system for well closure work in Alberta. The LSD provides the finest resolution — a 40-acre parcel within a 640-acre section.

A standard closure site reference looks like LSD 10-33-037-04W5: Legal Subdivision 10, Section 33, Township 37, Range 4, West of the 5th Meridian. That places the site southwest of Sundre in the Caroline gas area. The LSD number (1-16) identifies the specific 40-acre parcel, numbered from southeast to northwest in an alternating pattern.

For a full explanation of DLS structure, see Understanding the DLS System and How LSDs Are Numbered.

UWI in Closure Records

Well closure records frequently reference the Unique Well Identifier rather than the raw LSD. A UWI like 100/10-33-037-04W5/00 embeds the legal land description directly — the middle segment is the DLS address. Converting a UWI to GPS coordinates means parsing out that LSD component. Township Canada handles both slash-delimited and compressed UWI formats.

Real-World Scenarios

Scenario 1: AER Closure Application Filing

A closure company in Red Deer is preparing Directive 013 abandonment applications for a batch of 35 wells acquired from an inactive licensee. The well licence files list locations as LSDs — 06-18-039-05W5, 14-07-040-04W5, 02-31-038-05W5, and 32 more. Before filing, the team needs to:

1. Verify each LSD resolves to a valid parcel in the correct area
2. Generate GPS coordinates for the field crews who will perform the downhole work
3. Produce a coordinates schedule for the AER submission package
4. Export a KML file for the project manager's site map

Enter the full list into the batch converter and get GPS coordinates, validation flags, and export files in seconds. The alternative — converting 35 sites one at a time using paper maps or manual lookups — takes the better part of a day.

Scenario 2: Orphan Well Field Inspection

An environmental consultant contracted by the Orphan Well Association needs to inspect 12 orphan well sites across Townships 42 to 45, Range 2-4 W5M, in the Pembina oil field area. The site list arrives as a spreadsheet of LSDs. The consultant needs:

1. GPS coordinates for each site loaded into a truck-mounted GPS
2. An efficient driving route that minimizes time on gravel range roads
3. A map showing all 12 sites relative to access roads and nearby infrastructure

Using Township Canada's route planner, the consultant enters all 12 LSDs, gets an optimized route with turn-by-turn directions, and exports the waypoints. A day of field inspections planned in five minutes.

Scenario 3: Reclamation Certificate Package

After completing surface remediation at NE-22-041-06W5, a reclamation company needs to assemble the certificate application. The package requires location data in multiple formats: coordinates in the application form, a KML file for the site plan, and a Shapefile for the environmental consultant's GIS analysis.

Convert the quarter section in Township Canada, export as KML and Shapefile, and copy the coordinates into the application. Three formats from one conversion, ready for submission.

How Township Canada Handles Well Closure Workflows

Single site lookup: Enter any closure site LSD — 10-33-037-04W5, NE-22-041-06W5, or any standard DLS notation — and get GPS coordinates with a survey grid overlay. Try the DLS to GPS converter.

Batch processing: Upload a CSV of closure site locations and convert hundreds of sites at once. The output flags descriptions that don't resolve, catching data errors before they reach the AER. Available on the Business plan. Try it at /app/batch.

Route planning: Add closure sites as stops and get an optimized driving route with turn-by-turn directions on rural roads. Saves time for field crews covering large areas.

Multi-format export: Download results as CSV, KML, Shapefile, GeoJSON, DXF, or PDF — covering every format used in AER submissions, GIS analysis, and CAD engineering.

Try It with a Real Closure Site

Enter 10-33-037-04W5 into the Township Canada converter to see the result. That's a parcel in the Caroline area southwest of Sundre — a region with active closure work. The converter returns GPS coordinates, places the LSD on the survey grid, and shows surrounding parcels for context.

For individual site lookups, use the LSD finder. For bulk closure inventories, the batch converter handles hundreds of records on a Business plan.