Apparatus and method for behind casing washout

Provided is a casing washout perforating gun assembly for use in a wellbore. The casing washout perforating gun assembly, in one example, includes a carrier gun body, an uphole plurality of charges supported within the carrier gun body, and a downhole plurality of charges supported within the carrie...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Barker, James Marshall, Hoelscher, Christopher C, Burky, Thomas Earl
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Provided is a casing washout perforating gun assembly for use in a wellbore. The casing washout perforating gun assembly, in one example, includes a carrier gun body, an uphole plurality of charges supported within the carrier gun body, and a downhole plurality of charges supported within the carrier gun body. According to this example, the uphole plurality of charges have an uphole size or uphole explosive design to perforate uphole openings having uphole opening areas within a wellbore casing, and the downhole plurality of charges have a different downhole size or different downhole explosive design to perforate downhole openings having downhole opening areas within the wellbore casing, and furthermore the downhole opening areas are at least 20 percent less than the uphole opening areas.