It finally happened. And it’s a very big deal for MPLX and ONEOK, both of which have been working for years to become full-fledged members of the elite “NGL wellhead-to-water club.” But the companies’ announcements that MPLX will build two fractionators at the terminus of a new NGL pipeline from Sweeny to Texas City and that ONEOK and MPLX will joint build a new LPG export terminal nearby (and a new purity-product pipeline between Mont Belvieu and the terminal) doesn’t just fill in the missing pieces of the puzzle they’ve been assembling. The plans also will give Gulf Coast LPG exporters the additional capacity they desperately need and — no small thing — create another fractionation hub. In today’s RBN blog, we discuss what MPLX and ONEOK are planning and why it matters.