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So we can drill for gas and oil in the Arctic Circle, no problem, we can drill for gas and oil in the middle of the desert, we can drill for gas and oil under the freaking ocean, but we have an issue when it gets too cold in a rural part of Texas?
If they found natural gas and oil on the moon, they'd be launching and splashing rockets at the Houston ship channel right now!
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Drilling a well uses different equipment than when you've already drilled a well, and have it on production. When you drill, you have a rig, and in cold environments like the Artic, the drill floor area is enclosed and heated, plus you're pumping drilling mud down the drill pipe to lift up cuttings, and the mud itself is warm.
On production, you just have a wellhead and what's called Christmas Tree with various valves, chokes, meters, etc. Natural gas, while warm when it enters the tubing to flow up to the surface, has a low ability to transfer that heat due to it being a gas, and so un-dense. So the wellhead and Christmas tree can cool down to the ambient temperature or just above it.
Also, natural gas, mixed in with water from the formation, can create what's called a gas hydrate - methane ice in effect, at a much higher temperature than what water freezes at. You can have hydrate plugs form at 40-50 F, depending on the pressure and phase envelop of that flow composition.
Wells can be insulated to keep ambient heat from the well stream in. You can also insulate every faucet on your house, your doors and windows, your walls and roof and floors to the point that nothing will freeze if it got to 0 F, or less. But Texas isn't usually that cold, so people don't spend the money on that, and neither do oil companies to keep wells from freezing during very rare weather events.
Nothing is ever designed to be 100% reliable in any possible condition - it would cost a fortune to be armored up against 0 F, and 120 F, and hail, and floods, and earthquakes, and sink holes, and tornados, tsunamis, and meteor strikes. You examine what conditions are reasonably practical, and design to withstand those.