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Legal sampling field notes - up for legal scrutiny?

I was testifying several weeks at a trial for a case I have been working on for three years. Most legal cases can drag on for very long periods of time.  All cases that I have been on have lasted a minimum of 2 years.

PAHs from wildfires and wildfire smoke

It was not that long ago that a smoky haze was across southern Alberta from fires in Washington State.  The haze was caused by wildfires and the winds moved the smoke over Alberta.  Wildfires seem to be very common lately with the latest one making the news from California.  Wildfires can be caused naturally or...

Is exposure to wildfire smoke bad for my health?

With the smoky haze that has spread across southern BC, Alberta and Saskatchewan from a very large wildfire in Washington state. There are health advisories issued across the provinces.

BY Court Sandau Arson Investigations

When Should You be Concerned with a Gas Migration Investigation?

An often-overlooked statement in the Energy Resource Conservation Board (ERCB)/Alberta Energy Regulator (AER) suggests procedures for gas migration testing, as outlined in Directive 20, reads:  “Testing is to be done only in frost-free months. Periods immediately after a rainfall have to be avoided.”

Part II: Are Your Surface Casing Vent Flows 'Show'ers or 'Flow'ers?

Last week, we presented a problem with regard to “peek-a-boo” SCVs, where data results are inconsistent at best. Because of this variability in the 'show'ers, the standard test may not capture the event appropriately. As prefaced in last week’s post, your data shows periodic flow and no buildup pressure. The well...

BY Court Sandau Geoforensics

Are your surface casing vents 'show'-ers or 'flow'-ers?

 

 

Easy to know where this title came from . . . if you don't know, I won't be telling you online.  This title actually came from one of our clients and was used to describe their issues with testing surface casing vent flows.  Some were definite ‘flows’, with gases and/or liquids coming out of the surface...

BY Court Sandau Geoforensics

7 Burning Questions About Gas Migration

Two weeks ago, Scott Mundle and I attended the SPE-CSGM (Society of Petroleum Engineers)-Canadian Society of Gas Migration workshop on “Gas Migration Challenges – Identification and Treatment,” in beautiful Banff, Alberta.

BY Court Sandau Geoforensics

Methane is from a Deeper Thermogenic Source . . . Or, is it?

The carbon isotope signature of methane is often presented as the ‘silver bullet’ capable of identifying whether soil gas is from a deeper thermogenic source or produced by microbial processes. The stakes are high because failing to identify a gas migration (GM) issue can have serious environmental consequences,...

BY Scott Mundle Services

Why ethane is a key indicator to identify gas migration

Ethane is a reliable geochemical tracer that can be used as a single line of evidence to identify a potential gas migration issue. Ethane and longer chain hydrocarbons are produced during the thermal degradation of organic matter (kerogen) over geological timescales. Microbial processes in the shallow geology...

BY Scott Mundle Services

Measure Twice, Cut Once: How to Save Time & Money on GM Testing

Inconclusive gas migration tests are both costly and frustrating. Many times, completed tests still provide no real answer. Exposing the wellhead remains your only option to identify and fix otherwise unsuspected gas migration (GM). Wouldn’t it be great to get it right the first time?

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