Colo. considers new cementing rules for gas wells |

Colo. considers new cementing rules for gas wells

SILT – Colorado regulators are considering new casing regulations for about 30 gas wells south of Silt because of groundwater contamination concerns.

The Daily Sentinel reported Monday that the Colorado Oil and Gas Conservation Commission may also consider retroactive top-to-bottom cementing of natural gas wells in other areas of the region too.

Some wells are only cased from the bottom up to the gas production zone and from the top down to groundwater levels. That leaves the intermediate area unsealed.

There’s a potential for shallow gas of no commercial value to rise through the uncemented area and the outer edge of the well bore.

Gas associated with drilling production has been found in local groundwater supplies.

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