Halliburton Energy Services, Inc.

Ryan A Harrison

Flint R George

Roger Charles Watson

John Hudson Hales

Justin Lee Mason

Gavin H Drummond

A surge chamber assembly () for use in a wellbore includes a housing () having one or more openings (), a surge chamber () and a combustion chamber (). The openings () provide fluid communication between the exterior () of the housing () and the surge chamber (). A sleeve () is slidably positioned within the housing () and has a first position wherein fluid communication through the openings () is prevented and a second position wherein fluid communication through the openings () is allowed. A combustible element () is positioned in the combustion chamber () such that combusting the combustible element () generates pressure in the combustion chamber () that actuates the sleeve () from the first position to the second position.

Surge chamber assembly and method for perforating in dynamic underbalanced conditions

A perforating safety system. A perforating safety system includes a detonation transfer interrupter with a device which decreases an axial separation between detonation transfer components after installation of the interrupter in the well. Another perforating safety system includes a perforating gun and firing head installed together in the well, and an interrupter having a device which increases a separation between detonation transfer components in the well to thereby prevent transfer of detonation from the firing head to the perforating gun. Yet another perforating safety system includes a firing head positioned at a distal end of a perforating assembly when installed in the well, and an interrupter having a device which decreases a separation between detonation transfer components after installation of the interrupter in the well.

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Carrollton, TX, United States of America

Ryan A Harrison