# US 11,078,752 B2 · Smart cementing wiper plug > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,752 B2 - Document ID: US11078752B2 - Status: Granted - Kind: B2 - Application number: 16/716,374 - Filed: 2019-12-16 - Published: 2021-06-17 - Granted: 2021-08-03 - Earliest claimed: 2019-12-16 - Assignees: Saudi Arabian Oil Company - Applicants: Saudi Arabian Oil Company - Inventors: Victor Carlos Costa De Oliveira; Ramon Rodriguez Rico; Mario Augusto Rivas Martinez - Web page: https://patentgrep.com/patent/US11078752B2 ## CPC - E21B 33/16: using plugs for isolating cement charge; Plugs therefor {(stage cementing E21B33/146; spacer compositions C09K8/424)} - E21B 33/08: Wipers; Oil savers - E21B 47/12: Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling - E21B 47/024: of devices in the borehole (determining slope or direction of the borehole E21B47/022) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS ## Abstract A method and system for completing cementing operations in a subterranean well with a wiper plug assembly includes delivering the wiper plug assembly into a casing, the wiper plug assembly having a wiper plug body with a circular cross section and a resilient wiper element that engages an inner diameter of the casing string. An inclination of the wiper plug assembly is measured in three dimensions with an accelerometer assembly and an azimuth of the wiper plug assembly is measured in three dimensions with a magnetometer. The inclination and the azimuth of the wiper plug assembly are delivered to a control unit in real time. An inclination of the wiper plug assembly is determined in real time. The inclination of the wiper plug assembly is delivered to an earth's surface in real time with a transmitter of the electronics package. ## Claims ### Claim 1 A method for completing cementing operations in a subterranean well with a wiper plug assembly, the method including: delivering the wiper plug assembly into a casing string that extends into the subterranean well, the wiper plug assembly having a wiper plug body with a circular cross section and a resilient wiper element that engages an inner diameter of the casing string; measuring an inclination of the wiper plug assembly in three dimensions with an accelerometer assembly of an electronics package of the wiper plug assembly that is located within the wiper plug body; measuring an azimuth of the wiper plug assembly in three dimensions with a magnetometer of the electronics package; delivering the inclination and the azimuth of the wiper plug assembly to a control unit of the electronics package in real time; delivering the inclination of the wiper plug assembly to an earth's surface in real time with a transmitter of the electronics package; and using the inclination of the wiper plug assembly to confirm that the wiper plug assembly has exited a cement head with a computational device at the earth's surface. ### Claim 2 (depends on 1) The method of claim 1, further including using the inclination of the wiper plug assembly to determine a location of the wiper plug assembly within the subterranean well with a computational device at the earth's surface. ### Claim 3 (depends on 2) The method of claim 2, where determining the location of the wiper plug assembly within the subterranean well further includes comparing the inclination of the wiper plug assembly to a known survey of the subterranean well. ### Claim 4 (depends on 2) The method of claim 2, further including tracking a travel of the wiper plug assembly through the subterranean well in real time at the earth's surface on the computational device. ### Claim 5 (depends on 1) The method of claim 1, further including using the inclination of the wiper plug assembly to confirm that the wiper plug assembly has landed on a landing collar within the subterranean well with a computational device at the earth's surface. ### Claim 6 (depends on 1) The method of claim 1, where the wiper plug assembly includes a timer and the method further includes using the timer to determine a start of the measuring of the inclination of the wiper plug assembly and a start of the measuring of the azimuth of the wiper plug assembly. ### Claim 7 A method for completing cementing operations in a subterranean well with a wiper plug assembly, the method including: loading the wiper plug assembly into a cement head in communication with a bore of a casing string that extends into the subterranean well; launching the wiper plug assembly into the casing string from the cement head; measuring an inclination of the wiper plug assembly in three dimensions with an accelerometer assembly of an electronics package of the wiper plug assembly; measuring an azimuth of the wiper plug assembly in three dimensions with a magnetometer of the electronics package; delivering the inclination and the azimuth of the wiper plug assembly to a control unit of the electronics package in real time; delivering the inclination and the azimuth of the wiper plug assembly to a computational device at an earth's surface in real time with a transmitter of the electronics package; and determining a location of the wiper plug assembly within the subterranean well with the computational device at the earth's surface in real time from the inclination and the azimuth of the wiper plug assembly. ### Claim 8 (depends on 7) The method of claim 7, where determining the location of the wiper plug assembly within the subterranean well further includes comparing the inclination of the wiper plug assembly to a known survey of the subterranean well. ### Claim 9 (depends on 7) The method of claim 7, further including tracking a travel of the wiper plug assembly through the subterranean well in real time at the earth's surface on the computational device. ### Claim 10 (depends on 7) The method of claim 7, further including using the inclination of the wiper plug assembly to confirm that the wiper plug assembly has exited the cement head with the computational device at the earth's surface in real time. ### Claim 11 (depends on 7) The method of claim 7, further including using the inclination of the wiper plug assembly to confirm that the wiper plug assembly has landed on a landing collar within the subterranean well with the computational device at the earth's surface in real time. ### Claim 12 (depends on 7) The method of claim 7, where the wiper plug assembly includes a timer and the method further includes using the timer to determine a start of the measuring of the inclination of the wiper plug assembly and a start of the measuring of the azimuth of the wiper plug assembly. ### Claim 13 A method for completing cementing operations in a subterranean well with a wiper plug assembly, the method including: delivering the wiper plug assembly into a casing string that extends into the subterranean well, the wiper plug assembly having a wiper plug body with a circular cross section and a resilient wiper element that engages an inner diameter of the casing string; measuring an inclination of the wiper plug assembly in three dimensions with an accelerometer assembly of an electronics package of the wiper plug assembly that is located within the wiper plug body; measuring an azimuth of the wiper plug assembly in three dimensions with a magnetometer of the electronics package; delivering the inclination and the azimuth of the wiper plug assembly to a control unit of the electronics package in real time; delivering the inclination of the wiper plug assembly to an earth's surface in real time with a transmitter of the electronics package; and using the inclination of the wiper plug assembly to confirm that the wiper plug assembly has landed on a landing collar within the subterranean well with a computational device at the earth's surface.