[Tell It Right]

Is the solution, then, to somehow cap where natural gas has been drilled in the past? If NG had collected there in the past, then it was obviously trapped there naturally (no leak holes in the rock) until it was drilled. So if a NG well gets tapped then depleted, can sealing it allow it to build more NG there to be used again a couple of decades later?

I say "a couple of decades" based on stories of abandoned coal mines around here building up methane in areas that were sealed off. This article is about exporting LNG. A related topic, as far as your post of depleting NG goes, is that Alabama Power and other power companies were forced by Obama to close down some coal plants and replace them with power fueled by "clean burning natural gas". Thus some states use more natural gas than before.

[crusty old prospector]

So if a NG well gets tapped then depleted, can sealing it allow it to build more NG there to be used again a couple of decades later?

Negative. If only it was that easy…