The following are links to a couple of videos that explain the process.  They may have been posted previously but I thought a refresher for newer members may be beneficial.

I will note that in established plays such as the Haynesville Shale the downstream pipeline is generally installed prior to completing the well so it can be produced to sales during initial flowback.

http://www.api.org/policy/exploration/hydraulicfracturing/index.cfm

http://www.contres.com/operations/technologies/hydraulic-fracturing