You could try powering the pump (and giving it a redstone signal) from within the gas pocket, have it supply a tank, and maybe try piping the gas up? I honestly have no clue if BC pipes can carry natural gas, or any other mod pipes for that matter. If you wanted to get complicated, you could maybe try using golems with it somehow, but I'm not certain they wouldn't slowly die from the gas down there.
Yes, that is what I did to get a tank filled with natural gas. What I am wondering is with Mariculture or in conjunction with another mod, is there a way to setup a machine above the "Gas Leak" block and let it mine down to get the gas. Having to manually dig down for each pocket doesn't feel like a progression of technology with in the pack.
No worries if not. I was just asking.