# US 12,000,267 B2 · Communication and location system for an autonomous frack system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,267 B2 - Document ID: US12000267B2 - Status: Granted - Kind: B2 - Application number: 17/939,241 - Filed: 2022-09-07 - Published: 2023-03-30 - Granted: 2024-06-04 - Earliest claimed: 2021-09-24 - Assignees: DynaEnergetics Europe GmbH - Applicants: DynaEnergetics Europe GmbH - Inventors: Joern Olaf Loehken - Web page: https://patentgrep.com/patent/US12000267B2 ## CPC - E21B 47/095: by detecting an acoustic anomalies, e.g. using mud-pressure pulses - E21B 23/06: for setting packers - E21B 23/08: Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems - E21B 43/1185: Ignition systems - E21B 43/119: Details, e.g. for locating perforating place or direction - E21B 47/092: by detecting magnetic anomalies - G01V 1/52: Structural details - G01V 2001/526: {Mounting of transducers} - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) ## Abstract An autonomous wellbore tool may include a plug assembly and a positioning system. The positioning system may be provided on the plug assembly. According to an aspect, the positioning system includes a distance measurement system. The autonomous wellbore tool may include one of a perforating gun and a transmitter plug assembly. ## Claims ### Claim 1 An autonomous wellbore tool comprising: a plug assembly; a positioning system provided on the plug assembly, wherein the positioning system comprises a distance measurement system; a communication system housed in the plug assembly; and a perforating gun, wherein the perforating gun comprises: a detonator including an electronic circuit board; a first perforating gun; and a second perforating gun, wherein the communication system is configured to communicate with the electronic circuit board, and wherein the communication system is configured distinguish between the first perforating gun and the second perforating gun. ### Claim 2 (depends on 1) The autonomous wellbore tool of claim 1, wherein the distance measurement system comprises a sonar device. ### Claim 3 (depends on 1) The autonomous wellbore tool of claim 1, wherein the distance measurement system comprises a wellbore fluid pressure telemetry system. ### Claim 4 (depends on 1) The autonomous wellbore tool of claim 1, further comprising: a setting tool, wherein the plug assembly is secured to the setting tool such that the plug assembly is deployed in the wellbore while secured to the setting tool. ### Claim 5 (depends on 1) The autonomous wellbore tool of claim 1, wherein the plug assembly comprises: an expansion element, wherein the expansion element is configured to expand outwardly to affix to an inner surface of a wellbore casing. ### Claim 6 (depends on 1) The autonomous wellbore tool of claim 1, wherein the perforating gun is an autonomous perforating gun. ### Claim 7 (depends on 1) The autonomous wellbore tool of claim 1, wherein the plug assembly is configured to be secured in a wellbore casing via a pre-installed securing mechanism comprising at least one of a plurality of seats, and a plurality of anchors. ### Claim 8 An autonomous wellbore tool comprising: a transmitter plug assembly; and a sonar device secured to the transmitter plug assembly, wherein the sonar device is configured to find an object in a wellbore casing, wherein the sonar device comprises an active sonar transducer that emits an acoustic signal or pulse of sound when the autonomous wellbore tool is positioned in the wellbore casing, wherein the active sonar transducer is configured to determine the range and orientation of an object in the wellbore casing, and wherein the active sonar transducer is configured to receive a return signal from the object in the wellbore casing. ### Claim 9 (depends on 8) The autonomous wellbore tool of claim 8, wherein the transmitter plug assembly is configured to be secured to an inner surface in a wellbore casing via a pre-installed securing mechanism. ### Claim 10 (depends on 8) The autonomous wellbore tool of claim 8, wherein the pre-installed securing mechanism comprises at least one of a plurality of seats, and a plurality of anchors. ### Claim 11 (depends on 8) The autonomous wellbore tool of claim 8, wherein the active sonar transducer is configured to measure a strength of the return signal, and determine a difference between the time the acoustic signal or the pulse of sound is emitted and the time the return signal is received. ### Claim 12 A method of identifying a position of an autonomous tool in a wellbore, the method comprising: deploying the autonomous tool in the wellbore, wherein the autonomous tool comprises: a plug; and a sonar device coupled to the plug; setting the plug; and using the sonar device, determining a position of a subsequently deployed perforating gun relative to the plug, wherein the autonomous tool further comprises a perforating gun secured to an upper end of the plug, the perforating gun comprising a detonator, a detonating cord, and a shaped charge, and wherein the method further comprises transmitting a firing signal from the plug to the detonator to detonate the shaped charge, wherein the firing signal is transmitted from the communication system of the plug. ### Claim 13 (depends on 12) The method of claim 12, wherein the perforating gun comprises a first perforating gun and a second perforating gun coupled to the first perforating gun, and the method further comprises: transmitting a first firing signal from the plug to the detonator of the first perforating gun; and transmitting a second firing signal from the detonator of the first perforating gun to a detonator of the second perforating gun.