Abstract: A well tool is disclosed, which includes features that enhance the reliability and safety of wellsite operations. In one disclosed embodiment, a pressure relief device is incorporated in a well completion tool. The pressure relief device is in fluid communication with fluid delivery and return flowpaths of the tool. When a predetermined differential fluid pressure is experienced, the pressure relief device opens and permits fluid flow between the fluid delivery and return flowpaths. Associated methods of protecting well tools are disclosed as well.

Abstract: In a well having a substantially annular completion structure therein, the completion structure having portions of lesser and greater inner diameter and an axially-shiftable element associated with the portion of greater inner diameter, the axially-shiftable element having an inner diameter greater than a diameter of the portion of lesser inner diameter, a shifting tool for, and method of, axially shifting the axially-shiftable element.

Abstract: An abrasive slurry delivery apparatus and associated method of using permit repeated and/or extended use of the apparatus in a subterranean wellbore and reduces abrasive wear of the casing during fracturing operations without requiring the disposal of expensive items of equipment after each fracturing operation. In a preferred embodiment, an abrasive slurry delivery apparatus has a tubular crossover member with an internal flow passage and side wall outlet openings, and a tubular protective member with outlet openings aligned with, but axially and circumferentially smaller than, the crossover outlet openings, coaxially disposed within the crossover.