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Project Number 278
Date of Summary July 19, 2004
Subject Natural Gas Sampling Program; Method Performance Verification Test Protocol
Performing Activity Gas Research Institute (GRI); Southwest Research Institute
Principal Investigator George, Hart and Nored
Contracting Agency Minerals Management Service
Completion Completed
Description This was a Joint Industry Project (JIP). The project was to verify methods to accurately sample gases. The effects of several variables on the repeatability of sampling were studied. Spot, composite, and continuous sampling was evaluated under various field conditions. Variables studied include: vertical and horizontal runs, location of sampling probes relative to orifice meter, effects of gas composition on sampling integrity, use of GPA separators, flowing temperature in the vicinity of the dew point, re-vaporization of chilled samples swirling flows. The sampling test that was performed helped identify difficulties with the procedure in the proposed test protocol, and to determine the practicalities of the procedure and its ease of implementation in field settings. Primary goal was to evaluate the test protocol itself, and a secondary goal was to determine the ability of several new sampling methods to provide representative gas samples.
Progress The project is completed and accepted in July 2004.
Reports
AA D. L. George, R. A. Hart, and M. Nored, Evaluation of a Proposed Gas Sampling Method Performance Verification Test Protocol, Final Report, Southwest Research Institute, July 2004.
AB Two final reports prepared by SwRI® as an account of contracted work sponsored by the Gas Research Institute and the United States Minerals Management Service:
bullet First Report (37 pages):  "Preparation of Natural Gas Blends Used as Calibration Standards: Sources of Uncertainty and Best Preparation Practices" File in Adobe's Portable Document Format (PDF) .
bullet Second Report (38 pages):  "A Review of the Current State and Direction of Methods for Sampling Wet Gas Flow" File in Adobe's Portable Document Format (PDF) .

 

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Last Updated: 07/23/2008, 08:02 AM