Halliburton Energy Services, Inc.

Courtney Ann Thain Roberts

Cynthia Anne Kane

Kevin C Cook

Christopher C Hoelscher

Joseph T MacGillivray

Wesley Neil Ludwig

Camille Anne Bryant

Richard Ellis Robey

Brenden Michael Grove

Jason Karl Cook

In general, in one aspect, embodiments relate to a detonator assembly that includes a detonator housing that includes a detonating cord receptacle and a detonator receptacle, a detonator seated within the detonator receptacle, a detonating cord seated within the detonating cord receptacle side-by-side the detonator, and a grounding clip that extends lengthwise along a substantial portion of the detonator housing, where the grounding clip extends beyond an axial end of the detonator housing.

Detonator assembly for a perforating gun assembly

A method and systems for perforating a formation surrounding a borehole that include placing a perforating gun assembly into the borehole, the perforating gun assembly including a gun body comprising a connector and a shaped charge within the gun body. The shaped charges are detonated, thereby producing a shock wave in the gun body. The shock wave propagating through the gun body is attenuated using a shock attenuation feature in the gun body to decrease a stress from the shock wave communicated to the connector.

Perforating gun assembly with reduced shock transmission

A detonator housing facilitates assembly of detonator components of a perforating gun. In an example, the detonator housing comprises a housing body configured for coupling to a charge tube of a perforating gun. A detonator receptacle is formed on the housing body for receiving a detonator. A detonating cord receptacle is formed on the housing body adjacent the detonator receptacle for receiving an end portion of a detonating cord in an overlapping relationship with the detonator. A detonating cord stop is formed on the detonating cord receptacle to limit an insertion depth of the detonating cord within the detonating cord receptacle.

Detonating cord depth locating feature

In general, in one aspect, embodiments relate to an electrical contact that includes a contact plate, a support plate, and three or more bends disposed between the contact plate and the support plate to counteract a force applied to the contact plate when engaged by a contact pin, where the electrical contact is configured to convey a detonating signal through an electrical feedthrough extending through at least a bulkhead of two or more perforating guns.

Electrical contact for perforating gun assembly

In general, in one aspect, embodiments relate to a charge tube assembly that includes a charge tube, a detonator housing interlocked with the charge tube, an end alignment interlocked with the charge tube, and a detonation cord extending from the detonator housing to the charge tube.

Charge tube assembly

In general, in one aspect, embodiments relate to a perforating gun that includes a gun body, a bulkhead assembly for coupling the perforating gun to an uphole perforating gun, where the bulkhead assembly is at least partially disposed in the gun body, and where the bulkhead assembly includes a bulkhead and electrical feedthrough formed in the bulkhead, and a charge tube assembly attached to the bulkhead assembly, where the charge tube is disposed in the gun body, and where the charge tube assembly includes a charge tube, a detonator housing interlocked with the charge tube, an end alignment interlocked with the charge tube, and a detonation cord extending from the detonator housing to the charge tube.

Perforating gun

A method of perforating a well that includes suspending a first perforating gun and a second perforating gun on a conveyance into a well, transmitting a signal down the conveyance, where the signal at least partially traverses the first perforating gun, a perforating gun connection, and the second perforating gun, and in response to the signal selecting the second perforating gun to fire, and firing a shaped charge in the second perforating gun, where the first perforating gun and the second perforating gun are connected via the perforating gun connection, where the perforating gun connection includes a pin which extends from the first perforating gun to a contact tab of the second perforating gun, and where a spring element, coupled with the contact tab, elastically deforms in response to the contact tab engaging with the pin.

Connector for perforating gun system

An impact sleeve is used for mitigating damage in a perforating gun resulting from shaped charge detonation. In one example, a perforating gun includes a gun carrier, with a charge holder and the impact sleeve inside the gun carrier. The charge holder holds a plurality of shaped charges capable of being detonated with sufficient explosive energy to generate high-velocity fragments inside the gun carrier. The impact sleeve comprises an energy-absorbing material and optional raised features for absorbing at least some energy of the high-velocity fragments. The materials, raised features, positioning, and geometry of the impact sleeve and raised features may be tuned to optimize energy absorption.

Energy-absorbing impact sleeve for perforating gun

A perforating gun connection whereby a signal may be carried from surface, down through a wireline or other conveyance, and across the connection from the pin on one perforating gun to an electrical contact structure on the next perforating gun in the string. In an example, the connection includes a connector body with an electrical pin positioned for contact with an electrical contact structure on the next perforating gun. The electrical contact structure has a contact tab aligned for engagement by the pin when connected with the connector body. The electrical contact structure may be unitarily formed to include a number of features to facilitate connection between perforating guns.

The disclosed embodiments include bulkheads for perforating guns and perforating gun assemblies. A bulkhead includes a threadless exterior surface that spans a length of a threaded connection of adjacent first and second perforating guns. The bulkhead also includes a first exterior groove having a first sealing element partially disposed in the first exterior groove. The bulkhead further includes a second exterior groove having a second sealing element partially disposed in the second exterior groove, where the first sealing element and the second sealing element are positioned around the threaded connection.

Growing community of inventors

Burleson, TX, United States of America

Courtney Ann Thain Roberts