11.1 Sector Descriptions and Overview
This sector includes processes associated with the exploration and drilling at oil, gas, and coal bed methane (CBM) wells and the equipment used at the well sites to extract the product from the well and deliver it to a central collection point or processing facility.
Table 11.1 lists the processes below with their corresponding SCCs; the SCCs used by EPA to estimate nonpoint emissions are noted in the “EPA Estimates?” column. The level 1 and 2 SCC description for all SCCs in this sector is “Industrial Processes; Oil and Gas Exploration and Production”.
Note also that the SCCs in this list are only the active nonpoint SCCs that either the EPA used or the submitting State agencies submitted in the 2023 NEI. All the SCCs that the EPA oil and gas tool uses are nonpoint SCCs. Lastly, “OG Tool” marked with an asterisk (OG Tool*) denote SCCs that are produced by the tool, but only for the state of Pennsylvania, by special request. “Blowdown and Pigging” EPA estimates are generated outside of the EPA Oil and Gas Tools and are noted as “non-OG Tool” in the “EPA Estimates?” column.
| EPA Estimates? | SCC | SCC Level 3 and 4 Description |
|---|---|---|
| OG Tool | 2310000220 | All Processes; Drill Rigs |
| – | 2310000230 | All Processes; Workover Rigs |
| OG TOOL | 2310000551 | All Processes; Produced Water from CBM Wells |
| OG TOOL | 2310000552 | All Processes; Produced Water from Gas Wells |
| OG TOOL | 2310000553 | All Processes; Produced Water from Oil Wells |
| OG TOOL | 2310000660 | All Processes; Hydraulic Fracturing Engines |
| – | 2310001000 | All Processes: On-shore; Total: All Processes |
| – | 2310002000 | Off-Shore Oil and Gas Production; Total: All Processes |
| – | 2310002301 | Off-Shore Oil And Gas Production; Flares: Continuous Pilot Light |
| – | 2310002305 | Off-Shore Oil And Gas Production;Flares: Flaring Operations |
| – | 2310002401 | Off-Shore Oil and Gas Production; Pneumatic Pumps: Gas And Oil Wells |
| – | 2310002411 | Off-Shore Oil and Gas Production; Pressure/Level Controllers |
| – | 2310002421 | Off-Shore Oil and Gas Production; Cold Vents |
| OG TOOL | 2310010100 | Crude Petroleum; Oil Well Heaters |
| OG TOOL | 2310010200 | Crude Petroleum; Oil Well Tanks - Flashing & Standing /Working /Breathing |
| OG TOOL | 2310010300 | Crude Petroleum; Oil Well Pneumatic Devices |
| – | 2310010700 | Crude Petroleum; Oil Well Fugitives |
| OG TOOL | 2310011001 | On-Shore Oil Production; Associated Gas Venting |
| – | 2310011020 | On-Shore Oil Production; Storage Tanks: Crude Oil |
| – | 2310011100 | On-Shore Oil Production; Heater Treater |
| OG TOOL | 2310011201 | On-Shore Oil Production; Tank Truck/Railcar Loading: Crude Oil |
| – | 2310011450 | On-Shore Oil Production; Wellhead |
| – | 2310011500 | On-Shore Oil Production; Fugitives: All Processes |
| OG TOOL | 2310011501 | On-Shore Oil Production; Fugitives: Connectors |
| OG TOOL | 2310011502 | On-Shore Oil Production; Fugitives: Flanges |
| OG TOOL | 2310011503 | On-Shore Oil Production; Fugitives: Open Ended Lines |
| – | 2310011504 | On-Shore Oil Production; Fugitives: Pumps |
| OG TOOL | 2310011505 | On-Shore Oil Production; Fugitives: Valves |
| – | 2310011506 | On-Shore Oil Production; Fugitives: Other |
| OG TOOL | 2310011600 | On-Shore Oil Production; Artificial Lift Engines |
| – | 2310012000 | Off-Shore Oil Production; Total: All Processes |
| – | 2310012020 | Off-Shore Oil Production; Storage Tanks: Crude Oil |
| – | 2310012511 | Off-Shore Oil Production; Fugitives, Connectors: Oil Streams |
| – | 2310012512 | Off-Shore Oil Production; Fugitives, Flanges: Oil |
| – | 2310012515 | Off-Shore Oil Production; Fugitives, Valves: Oil |
| – | 2310012516 | Off-Shore Oil Production; Fugitives, Other: Oil |
| – | 2310012521 | Off-Shore Oil Production; Fugitives, Connectors: Oil/Water Streams |
| – | 2310012522 | Off-Shore Oil Production; Fugitives, Flanges: Oil/Water |
| – | 2310012526 | Off-Shore Oil Production; Fugitives, Other: Oil/Water |
| – | 2310020000 | Natural Gas; Total: All Processes |
| OG TOOL* | 2310020600 | Natural Gas; Compressor Engines |
| OG TOOL | 2310021010 | On-Shore Gas Production; Storage Tanks: Condensate |
| – | 2310021011 | On-Shore Gas Production; Condensate Tank Flaring |
| OG TOOL | 2310021030 | On-Shore Gas Production; Tank Truck/Railcar Loading: Condensate |
| OG TOOL | 2310021100 | On-Shore Gas Production; Gas Well Heaters |
| – | 2310021101 | On-Shore Gas Production; Natural Gas Fired 2Cycle Lean Burn Compressor Engines < 50 HP |
| OG TOOL | 2310021102 | On-Shore Gas Production; Natural Gas Fired 2Cycle Lean Burn Compressor Engines 50 To 499 HP |
| – | 2310021103 | On-Shore Gas Production; Natural Gas Fired 2Cycle Lean Burn Compressor Engines 500+ HP |
| – | 2310021109 | On-Shore Gas Production; Total: All Natural Gas Fired 2Cycle Lean Burn Compressor Engines |
| – | 2310021201 | On-Shore Gas Production; Natural Gas Fired 4Cycle Lean Burn Compressor Engines <50 HP |
| OG TOOL | 2310021202 | On-Shore Gas Production; Natural Gas Fired 4Cycle Lean Burn Compressor Engines 50 To 499 HP |
| – | 2310021203 | On-Shore Gas Production; Natural Gas Fired 4Cycle Lean Burn Compressor Engines 500+ HP |
| – | 2310021209 | On-Shore Gas Production; Total: All Natural Gas Fired 4Cycle Lean Burn Compressor Engines |
| OG TOOL | 2310021251 | On-Shore Gas Production; Lateral Compressors 4 Cycle Lean Burn |
| OG TOOL | 2310021300 | On-Shore Gas Production; Gas Well Pneumatic Devices |
| – | 2310021301 | On-Shore Gas Production; Natural Gas Fired 4Cycle Rich Burn Compressor Engines <50 HP |
| OG TOOL | 2310021302 | On-Shore Gas Production; Natural Gas Fired 4Cycle Rich Burn Compressor Engines 50 To 499 HP |
| – | 2310021303 | On-Shore Gas Production; Natural Gas Fired 4Cycle Rich Burn Compressor Engines 500+ HP |
| – | 2310021309 | On-Shore Gas Production; Total: All Natural Gas Fired 4Cycle Rich Burn Compressor Engines |
| OG TOOL | 2310021310 | On-Shore Gas Production; Gas Well Pneumatic Pumps |
| OG TOOL | 2310021351 | On-Shore Gas Production; Lateral Compressors 4 Cycle Rich Burn |
| OG TOOL | 2310021400 | On-Shore Gas Production; Gas Well Dehydrators |
| – | 2310021401 | On-Shore Gas Production; Nat Gas Fired 4Cycle Rich Burn Compressor Engines <50 HP w/NSCR |
| – | 2310021402 | On-Shore Gas Production; Nat Gas Fired 4Cycle Rich Burn Compressor Engines 50 To 499 HP w/NSCR |
| – | 2310021403 | On-Shore Gas Production; Nat Gas Fired 4Cycle Rich Burn Compressor Engines 500+ HP w/NSCR |
| – | 2310021412 | On-Shore Gas Production; Gas Well Dehydrators/Reboiler |
| – | 2310021450 | On-Shore Gas Production; Wellhead |
| OG TOOL | 2310021500 | On-Shore Gas Production; Gas Well Completion - Flaring |
| OG TOOL | 2310021501 | On-Shore Gas Production; Fugitives: Connectors |
| OG TOOL | 2310021502 | On-Shore Gas Production; Fugitives: Flanges |
| OG TOOL | 2310021503 | On-Shore Gas Production; Fugitives: Open Ended Lines |
| – | 2310021504 | On-Shore Gas Production; Fugitives: Pumps |
| OG TOOL | 2310021505 | On-Shore Gas Production; Fugitives: Valves |
| OG TOOL | 2310021506 | On-Shore Gas Production; Fugitives: Other |
| OG TOOL | 2310021509 | On-Shore Gas Production; Fugitives: All Processes |
| – | 2310021600 | On-Shore Gas Production; Gas Well Venting |
| – | 2310021602 | On-Shore Gas Production; Gas Well Venting - Recompletions |
| OG TOOL | 2310021603 | On-Shore Gas Production; Gas Well Venting - Blowdowns |
| – | 2310021700 | On-Shore Gas Production; Miscellaneous Engines |
| Non-OG TOOL | 2310021801 | On-Shore Gas Production; Pipeline Blowdowns and Pigging |
| – | 2310021802 | On-Shore Gas Production; Pipeline Leaks |
| – | 2310021803 | On-Shore Gas Production; Midstream gas venting for maintenance, startup, shutdown, or malfunction |
| – | 2310022000 | Off-Shore Gas Production; Total: All Processes |
| – | 2310022010 | Off-Shore Gas Production; Storage Tanks: Condensate |
| – | 2310022051 | Off-Shore Gas Production; Turbines: Natural Gas |
| – | 2310022090 | Off-Shore Gas Production; Boilers/Heaters: Natural Gas |
| – | 2310022105 | Off-Shore Gas Production; Diesel Engines |
| – | 2310022300 | Off-Shore Gas Production; Compressor Engines: 4Cycle Rich |
| – | 2310022410 | Off-Shore Gas Production; Amine Unit |
| – | 2310022420 | Off-Shore Gas Production; Dehydrator |
| – | 2310022501 | Off-Shore Gas Production; Fugitives, Connectors: Gas Streams |
| – | 2310022502 | Off-Shore Gas Production; Fugitives, Flanges: Gas Streams |
| – | 2310022505 | Off-Shore Gas Production; Fugitives, Valves: Gas |
| – | 2310022506 | Off-Shore Gas Production; Fugitives, Other: Gas |
| OG TOOL | 2310023000 | Coal Bed Methane Natural Gas; Dewatering Pump Engines |
| OG TOOL | 2310023010 | Coal Bed Methane Natural Gas; Storage Tanks: Condensate |
| OG TOOL | 2310023030 | Coal Bed Methane Natural Gas; Tank Truck/Railcar Loading: Condensate |
| OG TOOL | 2310023100 | Coal Bed Methane Natural Gas; CBM Well Heaters |
| OG TOOL | 2310023102 | Coal Bed Methane Natural Gas; CBM Fired 2Cycle Lean Burn Compressor Engines 50 To 499 HP |
| OG TOOL | 2310023202 | Coal Bed Methane Natural Gas; CBM Fired 4Cycle Lean Burn Compressor Engines 50 To 499 HP |
| OG TOOL | 2310023251 | Coal Bed Methane Natural Gas; Lateral Compressors 4 Cycle Lean Burn |
| OG TOOL | 2310023300 | Coal Bed Methane Natural Gas; Pneumatic Devices |
| OG TOOL | 2310023302 | Coal Bed Methane Natural Gas; CBM Fired 4Cycle Rich Burn Compressor Engines 50 To 499 HP |
| OG TOOL | 2310023310 | Coal Bed Methane Natural Gas; Pneumatic Pumps |
| OG TOOL | 2310023351 | Coal Bed Methane Natural Gas; Lateral Compressors 4 Cycle Rich Burn |
| OG TOOL | 2310023400 | Coal Bed Methane Natural Gas; Dehydrators |
| – | 2310023401 | Coal Bed Methane Natural Gas; Dehydrators/Reboiler |
| – | 2310023509 | Coal Bed Methane Natural Gas; Fugitives |
| OG TOOL | 2310023511 | Coal Bed Methane Natural Gas; Fugitives: Connectors |
| OG TOOL | 2310023512 | Coal Bed Methane Natural Gas; Fugitives: Flanges |
| OG TOOL | 2310023513 | Coal Bed Methane Natural Gas; Fugitives: Open Ended Lines |
| OG TOOL | 2310023515 | Coal Bed Methane Natural Gas; Fugitives: Valves |
| OG TOOL | 2310023516 | Coal Bed Methane Natural Gas; Fugitives: Other |
| OG TOOL | 2310023600 | Coal Bed Methane Natural Gas; CBM Well Completion: All Processes |
| OG TOOL | 2310023603 | Coal Bed Methane Natural Gas; CBM Well Venting - Blowdowns |
| OG TOOL | 2310023606 | Coal Bed Methane Natural Gas; Mud Degassing |
| – | 2310030220 | Natural Gas Liquids: Gas Well Tanks - Flashing & Standing/Working/Breathing, Controlled |
| – | 2310030230 | Natural Gas Liquids; Gas Well Tanks - Flaring |
| – | 2310030300 | Natural Gas Liquids; Gas Well Water Tank Losses |
| OG TOOL | 2310111100 | On-Shore Oil Exploration; Mud Degassing |
| OG TOOL | 2310111401 | On-Shore Oil Exploration; Oil Well Pneumatic Pumps |
| OG TOOL | 2310111700 | On-Shore Oil Exploration; Oil Well Completion: All Processes |
| – | 2310112401 | Off-Shore Oil Exploration; Oil Well Pneumatic Pumps |
| OG TOOL | 2310121100 | On-Shore Gas Exploration; Mud Degassing |
| OG TOOL | 2310121401 | On-Shore Gas Exploration; Gas Well Pneumatic Pumps |
| OG TOOL | 2310121700 | On-Shore Gas Exploration; Gas Well Completion: All Processes |
| – | 2310122000 | Off-Shore Gas Exploration; All Processes |
| OG TOOL* | 2310300220 | All Processes - Conventional; Drill Rigs |
| OG TOOL* | 2310321010 | On-Shore Gas Production - Conventional; Storage Tanks: Condensate |
| OG TOOL* | 2310321100 | On-Shore Gas Production - Conventional; Gas Well Heaters |
| OG TOOL* | 2310321400 | On-Shore Gas Production - Conventional; Gas Well Dehydrators |
| OG TOOL* | 2310321603 | On-Shore Gas Production - Conventional; Gas Well Venting – Blowdowns |
| OG TOOL* | 2310400220 | All Processes - Unconventional; Drill Rigs |
| OG TOOL* | 2310421010 | On-Shore Gas Production - Unconventional; Storage Tanks: Condensate |
| OG TOOL* | 2310421100 | On-Shore Gas Production - Unconventional; Gas Well Heaters |
| OG TOOL* | 2310421400 | On-Shore Gas Production - Unconventional; Gas Well Dehydrators |
| OG TOOL* | 2310421603 | On-Shore Gas Production - Unconventional; Gas Well Venting – Blowdowns |