Cement Data Telemetry via Drill String
AssigneeSchlumberger Technology Corporation
InventorJean-Marie Degrange
Life of this patent
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Abstract
A method can include acquiring data via a receiver mounted in a drill string during tripping of the drill string downward into a wellbore (e.g., including a casing and a cement annulus about the casing) where the acquired data can be for evaluation of at least one characteristic of cement; buffering at least a portion of the acquired data to a memory device mounted in the drill string; and while pumping drilling fluid through a passage in the drill string, as disposed in the wellbore, transmitting at least a portion of the buffered data via mud-pulse telemetry. Various other apparatuses, systems, methods, etc., are also disclosed.
Claims20
A method comprising:
- acquiring data via a receiver mounted in a drill string during tripping of the drill string downward into a wellbore that comprises a casing and a cement annulus about the casing, the acquired data for evaluation of at least one characteristic of cement;
- buffering at least a portion of the acquired data to a memory device mounted in the drill string;
- and
- while pumping drilling fluid through a passage in the drill string, as disposed in the wellbore, transmitting at least a portion of the buffered data via mud-pulse telemetry.
A downhole tool mountable in a drill string, the downhole tool comprising:
- one or more processors;
- a memory device with memory accessible by at least one of the one or more processors;
- and
- processor-executable instructions stored in the memory of the memory device and executable by at least one of the one or more processors to
- acquire data via a receiver mounted in a drill string during tripping of the drill string downward into a wellbore that comprises a casing and a cement annulus about the casing, the acquired data for evaluation of at least one characteristic of cement;
- buffer at least a portion of the acquired data to the memory device;
- and
- while pumping drilling fluid through a passage in the drill string, as disposed in the wellbore, transmit at least a portion of the buffered data via mud-pulse telemetry.
One or more computer-readable storage media comprising computer-executable instructions to instruct a computing device to:
- program one or more data acquisition periods for data acquisition equipment of a drill string during a downward leg of a trip of the drill string into a wellbore, the to be acquired data for evaluation of at least one characteristic of cement (954);
- in accordance with the technique, evaluate at least a portion of the acquired data as received via mud-pulse telemetry during pumping of drilling fluid through a passage of the drill string with the drill string disposed in the wellbore (958);
- and
- based at least in part on the evaluation, program one or more subsequent data acquisition periods for the data acquisition equipment or other data acquisition to be tripped in the wellbore (954).
Dependencies are inferred from the claim text.