Abstract: A single trip multizone time progressive well treating method and apparatus that provides a means to progressively stimulate individual zones through a cased or open hole well bore. The operator can use pre-set timing devices to progressively treat each zone up the hole. At each zone the system automatically opens a sliding sleeve and closes a frangible flapper, at a preselected point in time. An adjustable preset timing device is installed in each zone to allow preplanned continual frac operations for all zones. An optional “Stand-Down-Mode” can be integrated into the timing system so that if pumping stops the timers go into a sleep mode until the pumping resumes. The apparatus can consist of three major components: a packer, a timing pressure device, and a sliding sleeve/isolation device. The packer may be removed.

Abstract: A plug apparatus, also called the frac cup, includes an interior body with conical surface, a top wedge, a slip, and seal system that limits fluid movement around the interior body while fracking The seal system can be of the cup type, expandable pad type, labyrinth seal type, or other device that limits fluid flow. A method, where a plug is conveyed into the well on electric line and a Baker type power charge setting tool, where pump fluid acts on a cup thereby propelling the plug to a preselected position in a horizontal wellbore. The plug provides a barrier to applied frac slurries in order to force the frac slurries into a formation. After the frac, the plug allows flow past an internal ball seat from the bottom side or the plug can be milled out using coiled tubing methods.