Plugging assemblies for plugging cased wellbores
A toolstring for plugging and perforating a wellbore includes a perforating gun extending between an uphole end and a downhole end longitudinally opposed to the uphole end, a plugging assembly extending between an uphole end and a downhole end longitudinally opposed to the uphole end of the plugging assembly, the plug assembly including a setting tool physically attached directly to the perforating gun, the setting tool including an elongate housing extending between an uphole end and a downhole end opposite the uphole end of the housing, an open passageway extending from the uphole end to the downhole end of the housing, and wherein the setting tool further includes an elongate mandrel positioned in the open passageway and having an uphole end and a downhole end opposite the uphole end of the mandrel, and a combustion chamber located within the elongate housing for receiving an energetic charge.
1 . A setting tool for setting a downhole plug in a wellbore extending through a subterranean formation, the setting tool comprising:
an elongate housing extending between an uphole end and a downhole end opposite the uphole end and which defines an open passageway extending from the uphole end to the downhole end of the housing, and wherein the housing has a minimum outer diameter and a maximum outer diameter that is less than 5% larger than the minimum outer diameter;
an elongate mandrel positioned in the open passageway and having an uphole end and a downhole end opposite the uphole end, and a combustion chamber located within the elongate housing for receiving an energetic charge; and
one or more shear pins coupling the uphole end of the housing, which defines the minimum outer diameter of the housing, to the mandrel;
wherein an inner surface of the downhole end of the housing defines a connector for coupling to the downhole plug.
2 . The setting tool of claim 1 , wherein the housing extends monolithically from the uphole end to the downhole end thereof.
3 . The setting tool of claim 1 , wherein the housing has a minimum outer diameter and a maximum outer diameter that is less than half an inch larger than the minimum outer diameter.
4 . The setting tool of claim 1 , wherein the housing has a minimum outer diameter and a maximum outer diameter that is less than three eights of an inch larger than the minimum outer diameter.
5 . The setting tool of claim 1 , wherein the minimum outer diameter of the housing is substantially equal to the maximum outer diameter.
6 . The setting tool of claim 1 , wherein the housing defines a plurality of radial ports providing a fluid flowpath between the open passageway and an external environment surrounding the setting tool.
7 . The setting tool of claim 1 , further comprising an energetic charge installed in the combustion chamber.