Pump off measurements for quality control and wellbore stability prediction
AssigneeSchlumberger Technology Corporation
InventorsPETER WU, ANDREW HAWTHORN, TOM BRATTON, BIKASH SINHA
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Abstract
A method for obtaining high-quality well logging data acquired during a drilling operation includes acquiring well logging data during a pump-off period when a mud pump is turned off; and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet period within the pump-off period, wherein the quiet period is substantially free of interference from turning the mud pump on or off.
Claims23
A method for obtaining high-quality well logging data acquired during a drilling operation, comprising:
- acquiring well logging data during a pump-off period when a mud pump is turned off;
- and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet period within the pump-off period, wherein the quiet period is substantially free of interference from turning the mud pump on or off.
A system for obtaining high-quality logging data from a drilling operation, comprising;
- a processor and at least one memory storing a program having instructions for:
- acquiring well logging data during a pump-off period when a mud pump is turned off;
- and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet period within the pump-off period, wherein the quiet period is substantially free of interference from turning the mud pump on or off.
Dependencies are inferred from the claim text.