Dynaenergetics Europe Gmbh

Stefan Purcelean

Joern Olaf Loehken

Joerg Mueller

Benjamin Donauer

Bernd Fricke

Paula Feitoza Nascimento

Various exemplary embodiments of an encapsulated shaped charge () may include a charge case (), a charge lid () covering an open end of the charge case, and an external clip assembly connected to each of the charge case and the charge lid. The charge case may house explosive material () and a shaped charge liner (). The external clip assembly may include one or more clips () respectively connected to each of a retainer ring () positioned on the charge lid, and the charge case. The retainer ring may be formed from a material that will melt or burn when exposed to fire. According to the exemplary embodiments, melting or burning the retainer ring can release the one or more clips from the retainer ring and/or charge lid.

Encapsulated shaped charge

A jacket may include a back wall, a top wall, a bottom wall, a first sidewall, a second sidewall, an open front portion opposite the back wall portion, an internal cavity configured to receive the shaped charge via the open front portion, a key configured to be received within one of a plurality of orientation slots formed in a shaped charge carrier; and a retention latch extending from an internal surface of at least one of the top wall, the bottom wall, the first sidewall or the second sidewall. The retention latch may extend toward the internal cavity and is configured to secure the shaped charge within the internal cavity.

Perforating gun assembly and components

A dynamic underbalance sub for use in a wellbore may include a sub housing, a first chamber provided in an interior of the sub housing, an opening extending through the sub housing and configured such that the first chamber is in fluid communication with an exterior of the sub housing, a second chamber provided in the interior of the sub housing, and a pressure-isolating wall provided between the first chamber and the second chamber.

Growing community of inventors

Troisdorf, Germany

Stefan Purcelean