Predicting contamination and clean fluid properties from downhole and wellsite gas chromatograms
AssigneeHalliburton Energy Services, Inc.
InventorsPeter Ojo Olapade, Bin Dai, Christopher Michael Jones
Life of this patent
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Abstract
A method may comprise forming a data matrix, extracting chromatographs of a mud filtrate and a formation fluid, extracting concentration profiles of the mud filtrate and the formation fluid, and decomposing a data set on an information handling machine using a bilinear model. A system may comprise a downhole fluid sampling tool and an information handling tool. The downhole fluid sampling tool may comprise one or more multi-chamber sections, one or more fluid module sections, one or more gas chromatographers, wherein the one or more gas chromatographers are disposed in the one or more fluid module sections, and an information handling system.
Claims20
A method comprising:
- collecting at least a first sample and a second sample from a downhole fluid with a downhole fluid sampling tool;
- measuring the first sample and the second sample with a sensor to form a first measured sample and a second measured sample;
- forming a data matrix, wherein the data matrix comprises the first measured sample and the second measured sample;
- extracting the first measured sample and the second measured sample, wherein the first measured sample is from a mud filtrate and the second measured sample is from a formation fluid;
- extracting concentration profiles of the mud filtrate and the formation fluid;
- and
- decomposing a data set on an information handling machine using a model.
A method comprising:
- disposing a downhole fluid sampling tool into a wellbore at a first location, wherein the downhole fluid sampling tool comprises:
- at least one multi-chamber section;
- at least one fluid module section;
- and
- activating a pump to draw a solids-containing fluid disposed in the wellbore into the downhole fluid sampling tool;
- raising the downhole fluid sampling tool to surface;
- disposing the solids-containing fluid into a fluid analysis module;
- measuring the drilling fluid filtrate from the solids-containing fluid with a sensor disposed in the fluid analysis module to form data, wherein the data comprises sensor measurements from each of two or more samples, wherein the two or more samples comprise a mud filtrate and a formation fluid;
- inputting the data into an information handling system;
- forming a data matrix from the data;
- extracting one or more measurements of the mud filtrate and the formation fluid from the solids-containing fluid;
- extracting a concentration profile of the mud filtrate and the formation fluid;
- and
- decomposing a data set on an information handling machine using a model.
A system comprising:
- a downhole fluid sampling tool comprising:
- one or more multi-chamber sections;
- one or more fluid module sections;
- one or more sensors, wherein the one or more sensors are disposed in the one or more fluid module sections;
- and
- an information handling system configured to:
- form a data matrix;
- extract cone or more measurements of a mud filtrate and a formation fluid from the downhole fluid sampling tool;
- extract a concentration profile of the mud filtrate and the formation fluid from the downhole fluid sampling tool;
- and
- decompose a data set with, D=CST+E, wherein D is the data matrix, C is the concentration profile of the mud filtrate and the formation fluid, S is the one or more measurements of the mud filtrate and the formation fluid, T is a transpose of matrix S, and E is error.
Dependencies are inferred from the claim text.