 How is unconventional onshore oil and gas development different from an economic perspective than offshore or conventional sources of hydrocarbons. There are two big differences between unconventional oil and gas production and conventional onshore oil and gas production and offshore oil and gas production. The first is that offshore oil and gas production requires really long lead times. You got to get the rig out to sea, you have to drill, and it may be months before you get any production whatsoever. On the other hand, with onshore production, whether it's conventional or unconventional, the process of drilling completion to production can be much quicker within a month. The second difference between unconventional oil and gas production and conventional oil and gas production onshore is that in a typical unconventional oil or gas well, a lot of the production happens within the first few years of the well's life. So a lot of the revenue that comes in comes in much more quickly or over a shorter time scale than a conventional well. And this tends to improve return on investment and the overall economics of the well for an unconventional well as compared to a conventional well.