CALGARY, April 7, 2016 /CNW/ – Calfrac Well Services Ltd. (“Calfrac”) (TSX: CFW) intends to release its First Quarter 2016 results before markets open on Thursday, April 28, 2016 and has scheduled a conference call and webcast to begin at 10:00 A.M. MT (12:00 P.M. ET) on the same…