Natural Gas BTU: What Wellhead Gas Actually Measures
Pipeline gas runs near 1,020 Btu per cubic foot. Wellhead gas runs higher. Measured heating values across eight states, and which calculations they change.
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The TetraSoft Blog
Regulatory updates, emissions data, and methane science.
Oil and Gas Flaring: What Flares Actually Destroy
AP-42 assumes 98% destruction and publishes no methane factor. What Subpart W requires instead, plus measured values from 99.8% down to 91.1%.
Oil and Gas Well Map: 2.7M Wells Across Eight States
2.7 million wells across eight states at the heart of US production: what each agency publishes, how the API number joins them, and how to see them on one map.
What Is Stack Testing? Methods, Rules, and Its Limits
Stack testing measures pollutant concentration and flow at one outlet under representative conditions. What the methods cover and what a result cannot show.
AP-42 Emission Factors by Source Type, and What They Assume
AP-42 emission factors for boilers, turbines, engines, and flares, with the A to E ratings, plus the operating assumption built into every factor.
AERMOD Emission Rates: Where the Numbers Come From
AERMOD takes an emission rate as an input and never calculates it. Where that number comes from, what AP-42 factors assume, and when it matters.
OGMP 2.0 Level 4 and Level 5 Reporting Explained
OGMP 2.0 Level 4 requires source-level measurement. Level 5 adds site-level reconciliation. What each level demands of your emissions data, and why.
Storage Tank Emissions Calculation: Formulas and Failures
Standing, working, and flashing losses are the standard tank emissions calculation. What the formulas cover, where they stop, and what failure adds.
RRC GIS Viewer: The Texas Railroad Commission Public Map
The Texas Railroad Commission's public GIS viewer maps wells, pipelines, and surveys in 22 layers. What each shows, and where production and permits live.
ODNR Well Locator and Viewer: Find Any Ohio Oil or Gas Well
Map any of Ohio's 242,000+ oil and gas wells with the ODNR Well Locator, including the plugged and orphan wells the Oil & Gas Well Database leaves out.
Oil Field Map: How to Find Any Named Field's Wells
An oil field is one state agency's label, not a national object. What a field name means in the well records, and how to map one in Texas, Colorado, or Wyoming.
Oklahoma Earthquake Map: 28,000 Events and What Drives Them
Where Oklahoma's earthquakes cluster, how the 2009 surge rose and fell, and what USGS attributes it to. Map every event beside the injection wells.
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