What Is H-10 Form?
The H-10 Form is the Texas Railroad Commission's monthly report for injection wells — including saltwater disposal (SWD) wells and enhanced oil recovery (EOR) injection wells. It captures the type and volume of fluids injected, injection pressures, and well status. H-10 reports are a critical part of the TX RRC's underground injection control (UIC) program, which regulates injection to protect underground sources of drinking water.
What Injection Wells Require H-10 Filings?
- Saltwater disposal (SWD) wells: Wells that dispose of produced water by injecting it into permitted underground formations
- Enhanced oil recovery (EOR) wells: Wells injecting water, CO2, polymer, or other fluids to stimulate oil production
- Pressure maintenance wells: Injection wells designed to maintain reservoir pressure
- Gas storage injection wells: Wells injecting natural gas into underground storage formations
What the H-10 Form Captures
- Injection volumes: Barrels or Mcf of fluid injected during the month
- Maximum injection pressure: Highest wellhead pressure recorded during the month
- Fluid type: Classification of injected fluid (produced water, freshwater, CO2, polymer solution, etc.)
- Well status: Injecting, shut-in, or off injection
H-10 Compliance and Data Challenges
H-10 reporting requires accurate daily injection volume tracking, typically from SCADA or flow meter data. For operators with large SWD or EOR programs, reconciling injection volumes across multiple wells and disposal facilities — and matching them against produced water generation data — is a complex monthly task. Injection volumes must match the operator's permitted injection volumes for each well.