# US 10,480,310 B2 · Detecting a moveable device position using electromagnetic induction logging > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,310 B2 - Document ID: US10480310B2 - Status: Granted - Kind: B2 - Application number: 15/515,914 - Filed: 2015-11-06 - Published: 2018-08-16 - Granted: 2019-11-19 - Earliest claimed: 2015-11-06 - Assignees: Halliburton Energy Services, Inc. - Applicants: Halliburton Energy Services, Inc - Inventors: Burkay Donderici; Ahmed E. Fouda - Web page: https://patentgrep.com/patent/US10480310B2 ## CPC - E21B 47/092: by detecting magnetic anomalies - E21B 34/06: in wells - E21B 47/09: Locating or determining the position of objects in boreholes or wells {, e.g. the position of an extending arm}; Identifying the free or blocked portions of pipes - G01V 3/28: using induction coils - E21B 2200/06: Sleeve valves - 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 The operational position of a moveable device is detected using an electromagnetic induction logging tool. The logging tool generates a baseline log of the moveable device in a non-actuated position, and a response log of the moveable device in an actuated position. The baseline and response logs are then compared in order to determine the operational position of the moveable device. ## Claims ### Claim 1 A method for detecting a position of a downhole moveable device, the method comprising: emitting an electromagnetic (“EM”) field into a wellbore using a logging tool transmitter, thereby inducing current in a moveable device which produces secondary electromagnetic fields that emits from the moveable device; using a receiver of the logging tool to detect the secondary electromagnetic fields as response signals; and determining an operational position of the moveable device using the response signals, wherein determining the operational position comprises azimuthally determining the operational position of the moveable device. ### Claim 2 (depends on 1) A method as defined in claim 1, wherein determining the operational position comprises: using one or more response signals to generate a response log of the moveable device; comparing the response log with a baseline log of the moveable device; and determining the operational position of the moveable device based upon the comparison. ### Claim 3 (depends on 2) A method as defined in claim 2, wherein the baseline log is generated at a surface location. ### Claim 4 (depends on 2) A method as defined in claim 2, wherein the baseline log is generated within the wellbore. ### Claim 5 (depends on 2) A method as defined in claim 2, wherein: the baseline log is generated before the moveable device is actuated; and the response log is generated after the moveable device is actuated. ### Claim 6 (depends on 2) A method as defined in claim 2, wherein comparing the response log with the baseline log comprises using a pattern recognition technique to perform the comparison. ### Claim 7 (depends on 2) A method as defined in claim 2, further comprising aligning the response log and baseline log with respect to true depth. ### Claim 8 (depends on 7) A method as defined in claim 7, wherein: the moveable device is a sliding sleeve that forms part of a sliding sleeve assembly; and the alignment is achieved by aligning portions of the response log and baseline log representing stationary features of the sliding sleeve assembly. ### Claim 9 (depends on 7) A method as defined in claim 7, wherein the alignment is achieved by aligning portions of the response log and baseline log representing features of a tubing along which the moveable device is positioned. ### Claim 10 (depends on 9) A method as defined in claim 9, wherein the feature is a collar. ### Claim 11 (depends on 7) A method as defined in claim 7, wherein the alignment is achieved by aligning portions of the response log and baseline log representing a wellbore formation. ### Claim 12 (depends on 1) A method as defined in claim 1, wherein determining the operational position comprises: using one or more response signals to generate a response log of the moveable device; comparing the response log to a baseline log library, the baseline log library containing logs comprising response signals of the moveable device at a plurality of operational positions; and determining the operational position of the moveable device based upon the comparison. ### Claim 13 (depends on 1) A method as defined in claim 1, further comprising cancelling a direct signal from the response signals. ### Claim 14 (depends on 2) A method as defined in claim 2, wherein: the moveable device is a sliding sleeve; the baseline log is generated by moving a logging tool downhole past the sliding sleeve, the logging tool comprising an intervention tool to actuate the sleeve after the baseline log is generated; and the response log is generated by moving the logging tool uphole past the actuated sliding sleeve. ### Claim 15 (depends on 1) A method as defined in claim 1, wherein a logging tool comprising multiple azimuthally distributed EM field coils is utilized to determine the operational position of the moveable device. ### Claim 16 (depends on 15) A method as defined in claim 15, further comprising generating an image of downhole tubing based upon the azimuthally determined operational position of the moveable device. ### Claim 17 (depends on 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16) A logging tool, comprising: an electromagnetic (“EM”) field transmitting coil; and an EM field receiving coil, wherein the transmitting and receiving coils are communicably coupled to processing circuitry to perform any method as defined in any one of claims 1-14, 15 or 15-16. ### Claim 18 (depends on 17) A logging tool as defined in claim 17, wherein: the transmitting coil is positioned at a lower end of the logging tool; and the receiving coil is positioned at an upper end of the logging tool. ### Claim 19 (depends on 17) A logging tool as defined in claim 17, further comprising an intervention tool adapted to actuate a sliding sleeve between an open and closed position. ### Claim 20 (depends on 17) A logging tool as defined in claim 17, wherein the processing circuitry forms part of the logging tool. ### Claim 21 (depends on 17) A logging tool as defined in claim 17, further comprising deployable arms upon which the transmitting and receiving coils are positioned. ### Claim 22 (depends on 17) A logging tool as defined in claim 17, wherein the logging tool forms part of a wireline, slickline, or drilling assembly.