SYNCHRONIZATION OF DISTRIBUTED MEASUREMENTS IN A BOREHOLE
First Claim
1. A system to synchronize distributed measurements in a borehole, the system comprising:
- a plurality of wired segments coupled together by couplers;
a plurality of nodes configured to measure, process, or relay information obtained in the borehole to a surface processing system, each of the plurality of nodes comprising a local clock and being disposed at one of the couplers or between couplers; and
a surface processing system coupled to a master clock and configured to determine a time offset between the master clock and the local clock of an nth node among the plurality of nodes based on a downhole generated synchronization signal.
1 Assignment
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Accused Products
Abstract
A system and method to synchronize distributed measurements in a borehole are described. The system includes a plurality of wired segments coupled together by couplers and a plurality of nodes configured to measure, process, or relay information obtained in the borehole to a surface processing system, each of the plurality of nodes comprising a local clock and being disposed at one of the couplers or between couplers. The system also includes a surface processing system coupled to a master clock and configured to determine a time offset between the master clock and the local clock of an nth node among the plurality of nodes based on a downhole generated synchronization signal.
1 Citation
19 Claims
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1. A system to synchronize distributed measurements in a borehole, the system comprising:
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a plurality of wired segments coupled together by couplers; a plurality of nodes configured to measure, process, or relay information obtained in the borehole to a surface processing system, each of the plurality of nodes comprising a local clock and being disposed at one of the couplers or between couplers; and a surface processing system coupled to a master clock and configured to determine a time offset between the master clock and the local clock of an nth node among the plurality of nodes based on a downhole generated synchronization signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of synchronizing distributed measurements in a borehole, the method comprising:
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disposing a known number of wired segments coupled together by couplers in the borehole; disposing nodes along the wired segments, the nodes being disposed at two or more of the couplers or between couplers and each node comprising a local clock and configured to measure or relay information obtained in the borehole to a surface processing system; generating a time-stamped signal at an nth node based on the local clock of the nth node; receiving the time-stamped signal at the surface processing system; and the surface processing system computing a time offset between a master clock associated with the surface processing system and the local clock of the nth node. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification