# US 12,215,577 B2 · Perforating gun and ballistic interrupter for same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,577 B2 - Document ID: US12215577B2 - Status: Granted - Kind: B2 - Application number: 18/644,275 - Filed: 2024-04-24 - Published: 2024-10-24 - Granted: 2025-02-04 - Earliest claimed: 2023-04-24 - Assignees: Oso Perforating, LLC - Applicants: Oso Perforating, LLC - Inventors: Nathan McFarland; Varun Garg; Jeremy Ursi; Kerron James; Peter Galligan - Web page: https://patentgrep.com/patent/US12215577B2 ## CPC - E21B 43/1185: Ignition systems - E21B 43/119: Details, e.g. for locating perforating place or direction - F42D 1/05: Electric circuits for blasting - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - F42D: BLASTING (fuses, e.g. fuse cords, C06C5/00; {for obtaining fluid from wells E21B43/00; for mining or quarrying E21C37/00; for making tunnels or galleries E21D9/006}; cartridges F42B3/00) ## Abstract A perforating gun used in oil and gas completions operations, the perforating gun including a ballistic interrupter actuable from a disarmed state or configuration, in which ballistic communication between a detonator and a detonation cord is impeded, to an armed state or configuration, in which ballistic communication between the detonator and the detonating cord is permitted. A gun string includes the perforating gun and one or more additional perforating guns substantially identical to the perforating gun. ## Claims ### Claim 1 A perforating gun, comprising: a ballistic interrupter adapted to accommodate one of a detonating cord or a detonator; and a detonation housing adapted to accommodate the ballistic interrupter and the other one of the detonating cord or the detonator so that the ballistic interrupter is actuable from: a disarmed state or configuration, in which the ballistic interrupter is rotationally oriented so as to provide a mechanical barrier impeding ballistic communication between: the one of the detonating cord or the detonator accommodated within the ballistic interrupter, which ballistic interrupter is accommodated within the detonation housing; and the other one of the detonating cord or the detonator accommodated within the detonation housing; to an armed state or configuration, in which the ballistic interrupter is rotationally oriented so as to permit ballistic communication between: the one of the detonating cord or the detonator accommodated within the ballistic interrupter, which ballistic interrupter is accommodated within the detonation housing; and the other one of the detonating cord or the detonator accommodated within the detonation housing; wherein the ballistic interrupter comprises an exterior surface and a first bore adapted to accommodate the one of the detonating cord or the detonator. ### Claim 2 (depends on 1) The perforating gun of claim 1, wherein the ballistic interrupter defines a receptacle matingly engageable by a key to rotationally orient the ballistic interrupter between the disarmed state or configuration and the armed state or configuration. ### Claim 3 (depends on 2) The perforating gun of claim 2, wherein the key is not disengageable from the ballistic interrupter in the disarmed state or configuration; and wherein the key is disengageable from the ballistic interrupter in the armed state or configuration. ### Claim 4 (depends on 1) The perforating gun of claim 1, wherein the detonation housing comprises: a second bore adapted to accommodate the ballistic interrupter, which ballistic interrupter is adapted to accommodate the one of the detonating cord or the detonator; and a third bore adapted to accommodate the other one of the detonating cord or the detonator. ### Claim 5 (depends on 4) The perforating gun of claim 4, wherein both the exterior surface of the ballistic interrupter and the second bore of the detonation housing are tapered. ### Claim 6 (depends on 4) The perforating gun of claim 4, wherein the detonation housing further comprises a cover openable for reception of the detonator and closeable for retention of the detonator. ### Claim 7 (depends on 4) The perforating gun of claim 4, wherein the first bore of the ballistic interrupter intersects the exterior surface to form a first slot therealong; and wherein the second and third bores of the detonation housing intersect to form a second slot therebetween. ### Claim 8 (depends on 7) The perforating gun of claim 7, wherein: in the disarmed state or configuration, the first slot in the exterior surface of the ballistic interrupter is rotationally oriented away from the second slot formed between the second and third bores of the detonation housing; and in the armed state or configuration, the first slot in the exterior surface of the ballistic interrupter is rotationally oriented toward the second slot formed between the second and third bores of the detonation housing. ### Claim 9 (depends on 1) The perforating gun of claim 1, further comprising: a charge cartridge containing one or more perforating charges, said charge cartridge comprising an end cap, and said end cap comprising the detonation housing. ### Claim 10 (depends on 9) The perforating gun of claim 9, further comprising: a carrier tube in which the charge cartridge extends. ### Claim 11 (depends on 10) The perforating gun of claim 10, further comprising: a conductor sub containing the charge cartridge within the carrier tube. ### Claim 12 A ballistic interrupter for a perforating gun, the ballistic interrupter comprising: an elongated body defining an exterior surface; and a first bore formed in the elongated body and adapted to accommodate one of a detonating cord or a detonator so that the ballistic interrupter is actuable from: a disarmed state or configuration, in which the ballistic interrupter is rotationally oriented so as to provide a mechanical barrier impeding ballistic communication between: the one of the detonating cord or the detonator accommodated within the first bore of the ballistic interrupter; and the other one of the detonating cord or the detonator; to an armed state or configuration, in which the ballistic interrupter is rotationally oriented so as to permit ballistic communication between: the one of the detonating cord or the detonator accommodated within the first bore of the ballistic interrupter; and the other one of the detonating cord or the detonator. ### Claim 13 (depends on 12) The ballistic interrupter of claim 12, wherein the elongated body defines a receptacle matingly engageable by a key to rotationally orient the elongated body between the disarmed state or configuration and the armed state or configuration. ### Claim 14 (depends on 13) The ballistic interrupter of claim 13, wherein the key is not disengageable from the elongated body in the disarmed state or configuration; and wherein the key is disengageable from the elongated body in the armed state or configuration. ### Claim 15 (depends on 12) The ballistic interrupter of claim 12, wherein the perforating gun comprises a detonation housing, said detonation housing comprising: a second bore adapted to accommodate the ballistic interrupter, which ballistic interrupter is adapted to accommodate the one of the detonating cord or the detonator; and a third bore adapted to accommodate the other one of the detonating cord or the detonator. ### Claim 16 (depends on 15) The ballistic interrupter of claim 15, wherein the exterior surface of the elongated body is tapered. ### Claim 17 (depends on 15) The ballistic interrupter of claim 15, wherein the detonation housing further comprises a cover openable for reception of the detonator and closeable for retention of the detonator. ### Claim 18 (depends on 15) The ballistic interrupter of claim 15, wherein the first bore of the ballistic interrupter intersects the exterior surface to form a first slot therealong; and wherein the second and third bores of the detonation housing intersect to form a second slot therebetween. ### Claim 19 (depends on 18) The ballistic interrupter of claim 18, wherein: in the disarmed state or configuration, the first slot in the exterior surface of the ballistic interrupter is rotationally oriented away from the second slot formed between the second and third bores of the detonation housing; and in the armed state or configuration, the first slot in the exterior surface of the ballistic interrupter is rotationally oriented toward the second slot formed between the second and third bores of the detonation housing. ### Claim 20 (depends on 15) The ballistic interrupter of claim 15, wherein the perforating gun further comprises a charge cartridge containing one or more perforating charges, said charge cartridge comprising an end cap, and said end cap comprising the detonation housing. ### Claim 21 (depends on 20) The ballistic interrupter of claim 20, wherein the perforating gun further comprises: a carrier tube in which the charge cartridge extends; and a conductor sub containing the charge cartridge within the carrier tube. ### Claim 22 A detonation housing for a perforating gun, the detonation housing comprising: a body portion; and a first bore defined by the body portion and adapted to accommodate a ballistic interrupter, which ballistic interrupter is adapted to accommodate one of a detonating cord or a detonator; and a second bore defined by the body portion and adapted to accommodate the other one of the detonating cord or the detonator so that the ballistic interrupter is actuable from: a disarmed state or configuration, in which the ballistic interrupter is rotationally oriented so as to provide a mechanical barrier impeding ballistic communication between: the one of the detonating cord or the detonator accommodated within the ballistic interrupter, which ballistic interrupter is accommodated within the first bore of the detonation housing; and the other one of the detonating cord or the detonator accommodated within the second bore of the detonation housing; to an armed state or configuration, in which the ballistic interrupter is rotationally oriented so as to permit ballistic communication between: the one of the detonating cord or the detonator accommodated within the ballistic interrupter, which ballistic interrupter is accommodated within the first bore of the detonation housing; and the other one of the detonating cord or the detonator accommodated within the second bore of the detonation housing. ### Claim 23 (depends on 22) The detonation housing of claim 22, further comprising a cover openable for reception of the detonator and closeable for retention of the detonator. ### Claim 24 (depends on 22) The detonation housing of claim 22, wherein the ballistic interrupter comprises an exterior surface and a third bore adapted to accommodate the one of the detonating cord or the detonator. ### Claim 25 (depends on 24) The detonation housing of claim 24, wherein the first bore of the body portion is tapered. ### Claim 26 (depends on 24) The detonation housing of claim 24, wherein the first and second bores of the detonation housing intersect to form a first slot therebetween; and wherein the third bore of the ballistic interrupter intersects the exterior surface to form a second slot therealong. ### Claim 27 (depends on 26) The detonation housing of claim 26, wherein: in the disarmed state or configuration, the second slot in the exterior surface of the ballistic interrupter is rotationally oriented away from the first slot formed between the first and second bores of the detonation housing; and in the armed state or configuration, the second slot in the exterior surface of the ballistic interrupter is rotationally oriented toward the first slot formed between the first and second bores of the detonation housing. ### Claim 28 (depends on 22) The detonation housing of claim 22, wherein the perforating gun comprises a charge cartridge containing one or more perforating charges, said charge cartridge comprising an end cap, and said end cap comprising the detonation housing. ### Claim 29 (depends on 28) The detonation housing of claim 28, wherein the perforating gun further comprises: a carrier tube in which the charge cartridge extends; and a conductor sub containing the charge cartridge within the carrier tube.