What is an underground injection control well?

An injection well is used to place fluid underground into porous geologic formations. These underground formations may range from deep sandstone or limestone, to a shallow soil layer. Injected fluids may include water, wastewater, brine (salt water), or water mixed with chemicals.

What federal agencies have any jurisdiction over deep fluid injection wells?

Currently, the EPA has granted primacy over all classes of injection wells in 33 states and 2 territories. The EPA shares jurisdiction for injection regulation in 7 states and has complete regulatory authority over underground injection in 10 states and 2 territories (see Table 4.3).

What is a Class 1 injection well?

Class I wells are used to inject hazardous and non-hazardous wastes into deep, isolated rock formations. Class II wells are used exclusively to inject fluids associated with oil and natural gas production. Class III wells are used to inject fluids to dissolve and extract minerals.

What passes through injection well?

Definition of injection well Injected fluids may include water, wastewater, brine (salt water), or water mixed with chemicals. The definition of a well is codified in the UIC regulations at 40 CFR 144.3.

What is a Class 2 injection well?

Class II wells are used only to inject fluids associated with oil and natural gas production. Class II fluids are primarily brines (salt water) that are brought to the surface while producing oil and gas. It is estimated that over 2 billion gallons of fluids are injected in the United States every day.

What is a UIC permit?

The Underground Injection Control (UIC) Program in the Geologic Energy Management Division (CalGEM) ​administers state regulations for the permitting, drilling, inspecting, testing, and sealing of these wells.

Do injection wells cause earthquakes?

They found that a single injection well can cause earthquakes at distances more than 6 miles (10 kilometers) from the well. They also found that, in general, injecting fluids into sedimentary rock can cause larger, more distant earthquakes than injecting into the underlying basement rock.

Do I need a permit to operate an injection well?

All injection wells more than 18 feet deep must have an approved injection well permit prior to use. Injection well permit duration varies based upon the well type and use, but 10 years is the maximum permit period. All permits to operate injection wells must be periodically renewed and a processing fee of $100.00 must accompany each application.

When does the Texas Commission grant injection and disposal wells permits?

In accordance with 16 Texas Administrative Code (TAC) §3.9 and §3.46 (Statewide Rules 9 and 46)], the Commission grants injection and disposal wells permits for UIC Class II wells (injection wells associated with oil and gas production) when they meet the requirements of the Commission’s UIC Program.

What is an injection well?

An injection well is used to place fluid underground into porous geologic formations. These underground formations may range from deep sandstone or limestone, to a shallow soil layer.

What are the rules for decommissioning a deep injection well?

A deep injection well owner must notify IDWR following the permanent cessation of use. All deep injection wells that are to be permanently decommissioned shall be plugged with an impervious material in accordance with the Idaho Well Construction Standards to prevent movement of fluids into or between drinking water sources.