What Is SWD (Saltwater Disposal)?
SWD (Saltwater Disposal) refers to the process of disposing of produced water — the brine and fluid brought to the surface as a byproduct of oil and gas production — by injecting it into permitted underground disposal wells. SWD is the dominant method of produced water management in the United States, handling billions of barrels of produced water annually in Texas alone.
How Do SWD Wells Work?
Produced water from oil and gas wells is gathered through surface pipelines or trucked to a centralized SWD facility. At the facility, the water is treated to remove entrained hydrocarbons and solids before being pumped down the disposal well under permit-regulated pressure limits. The water is injected into a porous, permeable underground formation — typically a saline aquifer — that is isolated from freshwater sources by impermeable cap rock and cement.
SWD wells operate under permits issued by the state regulatory agency (the TX RRC in Texas), which specify the permitted disposal zone, maximum injection pressure, and maximum daily injection volume.
SWD Regulatory Requirements in Texas
Texas SWD operators must comply with:
- Monthly H-10 and H-15 filings: Reporting injection volumes, pressures, and fluid types to the TX RRC
- Mechanical integrity testing (MIT): Periodic pressure tests to verify well casing integrity
- Permit limits: Operating within permitted injection volumes and pressures
- Seismicity protocols: The TX RRC has issued guidance linking high-volume SWD injection to induced seismicity in certain areas
How AI Improves SWD Operations
Managing a network of SWD wells requires tracking injection volumes from multiple gathering sources, monitoring injection pressures in real time, and reconciling water volumes across gathering, disposal, and regulatory reporting systems. Collide's platform automates this data aggregation and reconciliation, generating TX RRC-compliant filings while providing operational visibility across the entire water management system.