It's tricky to give a single "typical" depth for natural gas reservoirs, as they can vary significantly depending on several factors. Here's a breakdown:

General Range:

* Shallow: Some reservoirs are found as shallow as 1,000 feet (305 meters), often associated with unconventional formations like shale gas.

* Common: Many conventional reservoirs are found between 5,000 to 15,000 feet (1,524 to 4,572 meters) deep.

* Deep: Reservoirs can exist at depths exceeding 20,000 feet (6,096 meters), requiring specialized drilling and extraction techniques.

Factors Affecting Depth:

* Geological Formation: The type of rock (sandstone, limestone, shale) and its formation influence reservoir depth.

* Regional Geology: Tectonic activity and geological history of an area impact the formation of reservoirs at different depths.

* Trapping Mechanism: The way gas is trapped within the rock (e.g., by folds, faults, or seals) affects the reservoir's depth.

Conclusion:

While there's no "typical" depth, it's safe to say most natural gas reservoirs are located between 5,000 and 15,000 feet below the surface. However, keep in mind that reservoirs can be found at significantly shallower or deeper depths depending on specific geological conditions.