Abstract: An array of plugging devices are pumped sequentially from the surface through a liner, that typically becomes horizontal in nature, where each plugging device is anchorable at a specified position along the length of the liner. When the plugging device is anchored, a cluster of perforations is generated above the plugging device where the perforations may be created by detonation of a perforating gun attached to the top side of the plugging device or the perforations may be created by shifting of a sleeve that is anchored to the plugging device. The plugging device may be a cup plug where the cup is similar to a swab cup and when pump pressure is applied to the cup, a force is generated to make the cup move through the liner. When anchored, the cup also directs frac fluids through the perforations to treat the well formation.

Abstract: A subterranean well tool seals along a section of a wall of the well and is carried on a conduit into the well. A plurality of anchoring elements and seals are provided for respective anchoring and sealing engagement along the wall of the well in concert and substantially concurrently with one another when the tool is shifted to the set position. When the well tool moves to the set position, a portion of the mandrel separates and is retrieved from the well bore, allowing the well tool to be reduced in overall length. The anchoring elements are sandwiched in between first and second, or upper and lower, sets of seals.

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 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. This system allows the operator to 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 pre-selected point in time. An adjustable preset timing device is installed in each zone to allow preplanned continual frac operations for all zones. The apparatus is present as a “Frac Module” that can consist of three major components, a packer, a timing pressure device, and a sliding sleeve/isolation device. A hydraulic packer may be removed or replaced with a swellable type packer.