HIGH ACCURACY CONTAMINATION ESTIMATION IN HYDROCARBON SAMPLES USING GC X GC
First Claim
1. A method of estimating contamination of oil based mud filtrate in a hydrocarbon sample, the method comprising the steps of:
- a) obtaining a hydrocarbon sample contaminated with oil based mud filtrate;
b) analyzing the contaminated hydrocarbon sample using two-dimensional gas chromatography (GC×
GC);
c) identifying one or more unique component or tracer in the oil based mud filtrate in the contaminated hydrocarbon sample; and
d) summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of a clean hydrocarbon sample.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of estimating contamination of oil based mud filtrate in a hydrocarbon sample. The method comprising the steps of obtaining a hydrocarbon sample contaminated with oil based mud filtrate, then analyzing the contaminated hydrocarbon sample using two-dimensional gas chromatography (GC×GC). The method further comprises identifying one or more unique component or tracer in the oil based mud filtrate in the contaminated hydrocarbon sample. Finally, the method comprises of summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of a clean hydrocarbon sample.
-
Citations
25 Claims
-
1. A method of estimating contamination of oil based mud filtrate in a hydrocarbon sample, the method comprising the steps of:
-
a) obtaining a hydrocarbon sample contaminated with oil based mud filtrate;
b) analyzing the contaminated hydrocarbon sample using two-dimensional gas chromatography (GC×
GC);
c) identifying one or more unique component or tracer in the oil based mud filtrate in the contaminated hydrocarbon sample; and
d) summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of a clean hydrocarbon sample. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
- 12. The method of clam 1, wherein the unique component or tracer in the oil based mud filtrate is selected from the group consisting of an iso-olefin, a liner alpha olefin, a poly-alpha olefin or ester.
-
14. A method of separating and analyzing contamination of drilling fluid in a hydrocarbon sample, the method comprising the steps of:
-
a) obtaining a hydrocarbon sample contaminated with drilling fluid;
b) analyzing the contaminated hydrocarbon sample using two-dimensional gas chromatography (GC×
GC), wherein the contaminated hydrocarbon sample is subject to two different stationary phase selectivities;
c) identifying one or more unique component or tracer in the drilling fluid in the contaminated hydrocarbon sample; and
d) summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of a clean hydrocarbon sample. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
-
- 22. The method of clam 14, wherein the unique component or tracer in the drilling fluid is selected from the group consisting of an iso-olefin, a liner alpha olefin, a poly-alpha olefin or ester.
-
24. A method of estimating contamination of crude oil in a oil based mud filtrate sample, the method comprising the steps of:
-
a) obtaining an oil based mud filtrate sample contaminated with crude oil;
b) analyzing the oil based mud filtrate sample using two-dimensional gas chromatography (GC×
GC);
c) identifying one or more unique component or tracer in the crude oil in the contaminated oil based mud filtrate sample; and
d) summing the peak volumes of the one or more unique component or tracer, relative to the peak volumes of the oil based mud filtrate sample. - View Dependent Claims (25)
-
Specification