Wellsites, pipelines and gas plants. Closed on the evidence.

For upstream, midstream and downstream operators: the full history of every wellsite and facility, salinity and hydrocarbon screening against the guidelines that apply, and closure packages cited to the page.

Oil and gas closure work stalls on the history nobody has.

An inactive well can carry forty years of paperwork from operators, consultants and regulators who are no longer around. Multiply that by an inventory of hundreds of sites.

Assets change hands. Sites arrive through acquisitions with boxes of scans, inconsistent file names and no one who remembers the 1990s spill.
Salt drives scope. Produced water releases and naturally saline soils can look alike in a single result, and the difference decides how much soil is dug up.
Every closure is assembled by hand. Records, lab tables and figures are pulled together again for each application, by whoever is on the file this year.

From the wellhead to the pump, one way of keeping the record.

Upstream

Wellsites, batteries and compressor stations

Drilling waste, flare pits, produced water and hydrocarbon releases, spread across many small sites with long, thin files.

Midstream

Gas plants and pipelines

Larger facilities with decades of monitoring, process chemicals such as the sulfolane and DIPA used to sweeten sour gas (CCME), and pipeline rights-of-way that cross many landowners.

Downstream and retail

Terminals, bulk plants and fuel stations

Tank and line histories, hydrocarbon fractions F1 to F4 under the CCME petroleum hydrocarbon standard, and sites that often sit next to homes and businesses.

Built for how oil and gas sites actually get closed.

Pull the public record for every site.

Statvis searches public registries such as AER OneStop and Alberta Environment for records tied to each site, including reclamation and remediation certificates, and checks matches against the site's own identifiers so a near-identical location doesn't slip in.

Results sorted into confirmed, needs review and a different site
Confirmed records added to the site file
The same check run across a whole inventory

Tell produced-water salt from natural salinity.

Samples are grouped by the balance of their major ions, not only how much salt they hold. Clusters that match natural background stand apart from those with an operational signature, and the map shows where each group sits.

Ionic fingerprints for every sample
Dendrogram, clusters and map linked
Evidence for background-adjusted guidelines

Screen against Tier 1, then calculate Tier 2.

Every sample is screened against the Alberta guideline for its depth, media and land use. Where a pathway doesn't apply, exclude it and the site-specific Tier 2 values are recalculated, with the reason recorded.

Separate guidelines by soil layer and groundwater
Pathway exclusions with their justification
The same settings carried into tables and figures

Rank the inventory. Work it in order.

With every site's record read, each one gets a priority score built from its own exceedances, receptors and history, with a breakdown that shows why.

Closing upstream sites in Alberta.

To reclaim a well, facility or pipeline, the Alberta Energy Regulator expects companies to abandon or remove the infrastructure, carry out environmental site assessments and remediate subsurface contamination where needed, return the land to its prior use or an equivalent, and then apply for a reclamation certificate (AER). Sour gas plants also need an amendment to their EPEA approval for decommissioning and reclamation.

Surface reclamation of well sites is assessed against the province's reclamation criteria for well sites and associated facilities, which differ for cultivated lands, forested lands, native grasslands and peatlands. Soil and groundwater are compared with the Alberta Tier 1 and Tier 2 remediation guidelines; root-zone salinity has its own guidelines, and the province's Subsoil Salinity Tool can be used to develop Tier 2 guidelines for sodium chloride below the root zone.

At portfolio scale, AER Directive 088 sets licensee-specific mandatory closure spend quotas under its Inventory Reduction Program. Each step depends on evidence that usually already exists in the site file. Statvis assembles it and keeps it cited, so the professional signing the application can check every fact.

This is a general overview, not regulatory or legal advice. Requirements change and depend on the site; check the current regulator documents and rely on a qualified professional. Statvis supports the evidence behind a closure; it doesn't replace the regulator's review or a professional's sign-off.

From oil and gas sites we've worked on.

All case studies

Sour gas plant closure · a midstream operator

74%less excavation·<12weeks to approval

Salinity fingerprinting across the site's own historical record showed naturally occurring background, which supported adjusting the guidelines applied. Excavation fell from 17,000 m³ to 4,500 m³, an estimated $2.6 million saved against the original scope.

Read the case study

Records program · a multinational energy company

78,000documents renamed to one standard

Statvis read each scanned document across a 300-site portfolio and named it to the company's written standard. In a blind test of 251 documents, it made 13% fewer naming errors than people.

Read the case study

All industries

By role

Take control of your contaminated sites.

Bring us one site's documents. We'll show you what's in them.

Wellsites, pipelines and gas plants. Closed on the evidence.

Oil and gas closure work stalls on the history nobody has.

From the wellhead to the pump, one way of keeping the record.