US2024360758A1PendingUtilityA1
Field operations framework
Assignee: SCHLUMBERGER TECHNOLOGY CORPPriority: Apr 28, 2023Filed: Apr 24, 2024Published: Oct 31, 2024
Est. expiryApr 28, 2043(~16.7 yrs left)· nominal 20-yr term from priority
E21B 49/10E21B 2200/22E21B 49/087
40
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Claims
Abstract
A method can include receiving downhole formation testing time series data acquired at a location along a borehole in a subsurface region during a formation testing operation performed by a downhole tool; processing the downhole formation testing time series data using a machine learning model to generate smoothed time series data; resampling the smoothed time series data; generating fluid and formation characteristics with respect to time based on the smoothed time series data; and outputting the fluid and formation characteristics with respect to time.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method comprising:
receiving downhole formation testing time series data acquired at a location along a borehole in a subsurface region during a formation testing operation performed by a downhole tool; processing the downhole formation testing time series data using a machine learning model to generate smoothed time series data; resampling the smoothed time series data; generating fluid and formation characteristics with respect to time based on the smoothed time series data; and outputting the fluid and formation characteristics with respect to time.
2 . The method of claim 1 , wherein the receiving comprises receiving the downhole formation testing time series data by a computational framework implemented in the downhole tool.
3 . The method of claim 2 , wherein the outputting comprises transmitting the fluid and formation characteristics to surface equipment.
4 . The method of claim 3 , wherein the transmitting comprises wireline transmission or acoustic transmission.
5 . The method of claim 1 , wherein the machine learning model comprises a support vector machine.
6 . The method of claim 1 , wherein the machine learning model comprises a tunable parameter for identification of one or more of noise and outliers.
7 . The method of claim 6 , wherein the noise comprises spikes.
8 . The method of claim 1 , wherein the downhole formation testing time series data comprise data indicative of a cleanup process and data indicative of a sampling process that acquires a fluid sample.
9 . The method of claim 8 , wherein the fluid and formation characteristics comprise a fluid sample contamination characteristic.
10 . The method of claim 9 , comprising controlling the formation testing operation based at least in part on the fluid sample contamination characteristic.
11 . The method of claim 10 , wherein the controlling extends or shortens a cleanup time based at least in part on the fluid sample contamination characteristic.
12 . The method of claim 9 , wherein the fluid sample contamination characteristic indicates a level of drilling fluid contamination in a fluid sample.
13 . The method of claim 1 , wherein the processing processes the downhole formation testing time series data according to a first time interval and wherein the resampling resamples at a second time interval that is at least an order of magnitude greater than the first time interval.
14 . The method of claim 1 , wherein the downhole formation testing time series data comprise one or more of viscosity data and density data.
15 . The method of claim 1 , wherein the downhole formation testing time series data comprise gas-oil ratio data.
16 . The method of claim 1 , wherein the downhole formation testing time series data comprise one or more of flow rate data and flowing pressure data.
17 . The method of claim 1 , wherein the fluid and formation characteristics comprise one or more of mobility, fluid composition and level of contamination.
18 . The method of claim 1 , comprising performing machine learning model training using the fluid and formation characteristics.
19 . A system comprising:
one or more processors; memory accessible to at least one of the one or more processors; processor-executable instructions stored in the memory and executable to instruct the system to:
receive downhole formation testing time series data acquired at a location along a borehole in a subsurface region during a formation testing operation performed by a downhole tool;
process the downhole formation testing time series data using a machine learning model to generate smoothed time series data;
resample the smoothed time series data;
generate fluid and formation characteristics with respect to time based on the smoothed time series data; and
output the fluid and formation characteristics with respect to time.
20 . One or more computer-readable storage media comprising processor-executable instructions to instruct a computing system to:
receive downhole formation testing time series data acquired at a location along a borehole in a subsurface region during a formation testing operation performed by a downhole tool; process the downhole formation testing time series data using a machine learning model to generate smoothed time series data; resample the smoothed time series data; generate fluid and formation characteristics with respect to time based on the smoothed time series data; and output the fluid and formation characteristics with respect to time.Join the waitlist — get patent alerts
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