# US 2019/0169984 A1 · Directional Control of Wellbore Trajectories > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0169984 A1 - Document ID: US20190169984A1 - Status: Published application - Kind: A1 - Application number: 16/206,690 - Filed: 2018-11-30 - Published: 2019-06-06 - Earliest claimed: 2017-12-01 - Assignees: Gyrodata, Incorporated - Applicants: Gyrodata, Incorporated - Inventors: Barry Smart; Adrián Guillermo Ledroz; John Lionel Weston - Web page: https://patentgrep.com/patent/US20190169984A1 ## CPC - 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 7/06: Deflecting the direction of boreholes - E21B 47/01: Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like - 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 Various implementations described herein refer to a method. The method may include receiving first gyro-while-drilling (GWD) survey data acquired using a first survey tool disposed within a wellbore. The method may include receiving second GWD survey data acquired using a second survey tool disposed within the wellbore. The method may include generating a survey of the wellbore based on the first GWD survey data and the second GWD survey data for directional control of wellbore trajectories. ## Claims ### Claim 1 A method, comprising: receiving first gyro-while-drilling (GWD) survey data acquired using a first survey tool disposed within a wellbore; receiving second GWD survey data acquired using a second survey tool disposed within the wellbore; and generating a survey of the wellbore based on the first GWD survey data and the second GWD survey data for directional control of wellbore trajectories. ### Claim 2 (depends on 1) The method of claim 1, wherein the survey is generated for the directional control of wellbore trajectories through use of dual GWD systems. ### Claim 3 (depends on 1) The method of claim 1, wherein of the first survey tool and the second survey tool are mounted within a bottom hole assembly (BHA). ### Claim 4 (depends on 1) The method of claim 1, wherein the first survey tool comprises one or more first gyroscopic sensors and one or more accelerometers, and wherein the second survey tool comprises one or more second gyroscopic sensors and one or more accelerometers. ### Claim 5 (depends on 4) The method of claim 4, wherein at least one of the first survey tool and the second survey tool further comprises a measurement while drilling (MWD) tool. ### Claim 6 (depends on 1) The method of claim 1, wherein the first survey tool is configured to acquire the first survey data at a first start time, and wherein the second survey tool is configured to acquire the second survey data at a second start time that is different than the first start time. ### Claim 7 (depends on 1) The method of claim 1, wherein the first survey tool and the second survey tool are configured to acquire survey data at a same time. ### Claim 8 (depends on 1) The method of claim 1, wherein generating the survey comprises: comparing the first survey data and the second survey data with predetermined values; generating a first survey based on the first survey data and a second survey based on the second survey data; and computing a weighted average of the first survey and the second survey. ### Claim 9 (depends on 1) The method of claim 1, wherein the first survey data acquired by the first survey tool and the second survey data acquired by second survey tool are checked for quality control purposes, and wherein quality control checks comprise: checks on each survey tool based on measurements generated internally by each tool; and comparison of survey data generated by each tool to ensure survey differences are within predefined tolerances. ### Claim 10 An apparatus, comprising: a first survey tool disposed within a wellbore, wherein the first survey tool acquires first gyro-while-drilling (GWD) survey data; and a second survey tool disposed within the wellbore, wherein the second survey tool acquires second GWD survey data, a controller that receives the first GWD survey data from the first survey tool, receives the second GWD survey data from the second survey tool, and generates a survey of the wellbore based on the first GWD survey data and the second GWD survey data for directional control of wellbore trajectories. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein of the apparatus comprises a bottom hole assembly (BHA). ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the survey is generated for the directional control of wellbore trajectories through use of dual gyro while drilling systems. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the first survey tool and the second survey tool are installed within the apparatus. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein at least one of the first survey tool and the second survey tool comprises a measurement while drilling (MWD) tool. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the first survey tool comprises one or more first gyroscopic sensors and one or more accelerometers, and wherein the second survey tool comprises one or more second gyroscopic sensors and one or more accelerometers. ### Claim 16 (depends on 10) The apparatus of claim 10, wherein the first survey tool is configured to acquire the first survey data at a first start time, and wherein the second survey tool is configured to acquire the second survey data at a second start time that is different than the first start time. ### Claim 17 (depends on 10) The apparatus of claim 10, wherein the first survey tool and the second survey tool are configured to acquire survey data at a same time. ### Claim 18 (depends on 10) The apparatus of claim 10, wherein generating the survey comprises: comparing the first survey data and the second survey data with predetermined values; generating a first survey based on the first survey data and a second survey based on the second survey data; and computing a weighted average of the first survey and the second survey. ### Claim 19 (depends on 10) The apparatus of claim 10, wherein the first survey data acquired by the first survey tool and the second survey data acquired by second survey tool are checked for quality control purposes, and wherein quality control checks comprise: checks on each survey tool based on measurements generated internally by each survey tool; and comparison of the survey data generated by each survey tool to ensure survey differences are within predefined tolerances. ### Claim 20 A non-transitory computer-readable medium having stored thereon a plurality of computer-executable instructions that, when executed by a processor, cause the processor to: receive first gyro-while-drilling (GWD) survey data acquired using a first survey tool disposed within a wellbore; receive second GWD survey data acquired using a second survey tool disposed within the wellbore; and generate at least one survey of the wellbore based on the first GWD survey data and the second GWD survey data for directional control of wellbore trajectories.