DENVER — Anadarko Petroleum said it plans to restart more than 3,000 vertical wells that were shut off after the deadly house explosion in Firestone in April.

The company disconnected all 1-inch diameter natural gas flow lines from more than 3,000 vertical wells in Colorado shortly after the explosion.

But Anadarko said all of its wells have since gone through rigorous inspection, as ordered by Gov. John Hickenlooper, and they’re starting to restart those wells.

Officials said they hope to have all the wells working by the end of the year.

In the meantime, Anadarko permanently will shut down the gas well it owns that was linked to the home explosion and fire that killed two men in the 6300 block of Twilight Avenue.

Two other wells in the neighborhood where the April 17 explosion occurred will also be shut down, the company said.

Investigators said the explosion was caused by unrefined, odorless natural gas from a cut 1-inch pipeline that was severed.

The line was believed to be abandoned, but investigators said it was still connected to a nearby well.

Mark Martinez and Joey Irwin were killed in the explosion that leveled the home, and Martinez’s wife Erin was severely injured.