Yes, that's correct.
As you're aware, a shale well is drilled vertically, and then there's horizontal drilling that can go out for a kilometre or so. That's done because they have to fracture the shale rock to release the gas. Once they've done that, the output from the well is very high in the initial year, and then declines rapidly in the first year and then tails off. The rate of decline tapers off after the first year.