Legal Land Descriptions for Well Abandonment

Well abandonment is one step in the closure lifecycle — and every step references a legal land description. When a well operator files a Directive 013 application with the AER, the well location is listed as a DLS address. When the abandonment contractor dispatches a rig to perform the downhole work, that DLS address needs to become GPS coordinates. When the abandonment report is filed, the LSD ties the work back to the original well licence.

Alberta has tens of thousands of wells in suspended or inactive status that require abandonment. Each one is identified by an LSD in the AER's well database. For abandonment operators, service companies, and regulators, the DLS system is the backbone of site identification.

Why LSD Accuracy Matters for Abandonment

A well abandonment is a permanent operation. Once cement plugs are set and the wellbore is sealed, the work can't be easily redone. Filing an abandonment report against the wrong LSD — even a single transposed digit — creates a records mismatch that can take months to resolve with the AER.

The most common error is a wrong meridian designation. LSD 06-18-039-05W5 is near Nordegg in west-central Alberta. The same LSD at W4 is near Consort, 250 kilometres to the east. A field crew dispatched to the wrong meridian doesn't just lose a day of travel — the abandonment rig, the crew, and the support equipment all need to be rescheduled.

Verifying that the LSD on a work order matches the intended well location before dispatching a crew is a basic quality check that prevents expensive field errors.

The Abandonment Workflow and Legal Land Descriptions

Step 1: Inventory Review

An abandonment operator acquires a portfolio of 50 inactive wells from a producer exiting a field. The acquisition spreadsheet lists each well by UWI. Before planning any field work, the operator needs to:

• Verify each UWI's LSD component resolves to a valid parcel
• Map all 50 locations to identify geographic clusters for crew scheduling
• Flag any UWIs with data quality issues (missing meridians, out-of-range townships)

Upload the full list to Township Canada's batch converter. The output provides GPS coordinates for every valid location and flags entries that don't resolve — catching data errors in the acquisition spreadsheet before they propagate into work orders.

Step 2: Field Crew Dispatch

The abandonment rig crew needs GPS coordinates for each well site, plus an efficient travel sequence when visiting multiple sites in a single mobilization. A typical campaign might cover 8 to 12 wells across two or three townships.

Enter the site LSDs into the route planner to get an optimized driving order with turn-by-turn directions on range roads and township roads. Export the route to a mobile device for real-time navigation.

Step 3: Regulatory Filing

After completing downhole abandonment, the operator files a Directive 013 completion report with the AER. The report references the well by its LSD and includes location coordinates. Having verified the LSD during inventory review and used the same coordinates for field dispatch means the regulatory filing is consistent — no discrepancies between the work order, the field records, and the AER submission.

Common DLS Patterns in Abandonment Work

Legacy Well Data

Wells drilled in the 1960s and 1970s sometimes appear in databases with abbreviated DLS notation — missing the meridian prefix, using two-digit township numbers without leading zeros, or storing the LSD in a non-standard column format. Township Canada parses multiple DLS formats and flags entries that are ambiguous or incomplete.

Multi-Well Pad Abandonments

A multi-well pad might have four to six wells with sequential LSD addresses — 06-18-039-05W5, 07-18-039-05W5, 10-18-039-05W5. These all fall within the same section. Batch converting the set confirms they cluster correctly on the map and that no well has been mis-entered into an adjacent section.

Cross-Meridian Campaigns

An abandonment campaign covering wells from the Pembina field (W5M) to the Viking area (W4M) spans two meridians. Sorting the work list by meridian and verifying coordinates before dispatch prevents the expensive error of sending a rig crew to the wrong side of the province.

How Township Canada Fits

Single well lookup: Enter a well LSD like 06-18-039-05W5 and see it on the survey grid with GPS coordinates. Confirm the location before adding it to a work order.

Batch verification: Upload a CSV of abandonment candidates and validate the entire inventory at once. The converter flags entries that don't resolve to valid parcels, catching data errors before they reach the field or the AER.

Route optimization: Plan multi-site abandonment campaigns with the route planner. Enter closure site LSDs and get an efficient driving order that minimizes travel time between wells.

Export for filings: Download GPS coordinates and location data as CSV, KML, Shapefile, or PDF for inclusion in Directive 013 submissions, environmental assessments, and internal project tracking.

For individual site verifications, the free plan works. For batch processing, multi-format exports, and team access, the Business plan covers the full abandonment workflow.