Method for determining the content of at least one given gas in a drilling mud, associated device and rig
First Claim
1. A method of determining a content of a given gas in a drilling mud, comprising:
- initially extracting and collecting a first portion of the given gas from a calibration sample of the drilling mud under predetermined conditions;
subsequently extracting and collecting a second portion of the given gas from the same calibration sample of the drilling mud under the predetermined conditions;
measuring the extracted first portion and the extracted second portion of the given gas to obtain data representing a quantity of the first portion of the given gas and a quantity of the second portion of the given gas extracted from the calibration sample of drilling mud;
establishing a family of calibration curves representing the given gas extracted from the calibration sample of the drilling mud, said establishing of the family of calibration curves being based on the data obtained during said measuring of the extracted first portion and the extracted second portion of the given gas;
measuring the given gas extracted from an analysis sample of the drilling mud to obtain data representing a quantity of the given gas extracted from the analysis sample of the drilling mud, the given gas being extracted from the analysis sample under the predetermined conditions; and
computing a content of the given gas in the drilling mud based on the data representing the quantity of the given gas extracted from the analysis sample and based on an applicable curve of the established family of calibration curves.
2 Assignments
0 Petitions
Accused Products
Abstract
A method includes the phases of measuring the quantity of a given gas in the gases extracted from a calibration sample of a calibration mud, in at least two stages for extraction under predetermined conditions. A family of curves representing the extraction, under the predetermined conditions, of the given gas from the drilling mud, is established on the basis of the measurements carried out. The method also includes the phases of measuring the quantity of given gas in the gases extracted from an analysis sample of the drilling mud in an extraction stage, under the predetermined conditions; and computing the given gas content of the drilling mud on the basis of the measured quantity of given gas and of a curve of the family.
40 Citations
19 Claims
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1. A method of determining a content of a given gas in a drilling mud, comprising:
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initially extracting and collecting a first portion of the given gas from a calibration sample of the drilling mud under predetermined conditions; subsequently extracting and collecting a second portion of the given gas from the same calibration sample of the drilling mud under the predetermined conditions; measuring the extracted first portion and the extracted second portion of the given gas to obtain data representing a quantity of the first portion of the given gas and a quantity of the second portion of the given gas extracted from the calibration sample of drilling mud; establishing a family of calibration curves representing the given gas extracted from the calibration sample of the drilling mud, said establishing of the family of calibration curves being based on the data obtained during said measuring of the extracted first portion and the extracted second portion of the given gas; measuring the given gas extracted from an analysis sample of the drilling mud to obtain data representing a quantity of the given gas extracted from the analysis sample of the drilling mud, the given gas being extracted from the analysis sample under the predetermined conditions; and computing a content of the given gas in the drilling mud based on the data representing the quantity of the given gas extracted from the analysis sample and based on an applicable curve of the established family of calibration curves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mud analyzing device for determining a content of a given gas in a drilling mud, said device comprising:
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a calibration device including; a first extraction member operable to; initially extract and collect a first portion of the given gas from a calibration sample of the drilling mud under predetermined conditions; and subsequently extract and collect a second portion of the given gas from the same calibration sample of the drilling mud under the predetermined conditions; a first measuring device for measuring the first portion of the given gas extracted by said extraction member and the second portion of the given gas extracted by said first extraction member to obtain data representing a quantity of the first portion of the given gas and a quantity of the second portion of the given gas extracted from the calibration sample of drilling mud; and a curve generating section for establishing a family of calibration curves representing the given gas extracted from the drilling mud by said first extraction member, said curve generating section being operable to establish the family of calibration curves based on the data representing the quantity of the first portion of the given gas and the quantity of the second portion of the given gas; and an analysis device including; a second extraction member for extracting and collecting the given gas from an analysis sample of the drilling mud under the predetermined conditions; a second measuring device for measuring the given gas extracted from the analysis sample of the drilling mud by said second extraction member to obtain data representing a quantity of the given gas extracted from the analysis sample of the drilling mud; and a computing device for computing a content of the given gas in the drilling mud based on the data representing the quantity of the given gas extracted from the analysis sample of the drilling mud as measured by said second measuring device, and based on an applicable curve of the established family of calibration curves. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification