It is because the gas is not worth much right now. Cheaper to burn it off. Since most of the demand is for oil and not natural gas, it makes sense right now to

It is because the gas is not worth much right now. Cheaper to burn it off. Since most of the demand is for oil and not natural gas, it makes sense right now to just burn it. If natural gas doubled or tripled in price then you would quickly see the natural gas being brought to market. Also Natural gas is heavily pipeline constrained commodity so it isn't easy to transport like oil is. No one wants a natural gas pipeline in their backyard.