Gas Holdup Tool applications in production logging

Document Type

Conference Proceeding

Publication Date



Transactions of the SPWLA Annual Logging Symposium (Society of Professional Well Log Analysts)


The Gas Holdup Tool (GHT) has been developed to improve understanding of downhole flowing conditions and to expedite the evaluation of the reservoir. Less than 3 ft in length, GHT is a 1-11/16-in-OD through-tubing production logging tool, which directly and accurately determines the volumetric fraction of gas over a cross-sectional volume element of the wellbore. This sensitive downhole tool operates in horizontal, highly deviated, and vertical cased wells. It uses real-time downhole pressure and temperature, casing inside diameter, and gas gravity measurements to generate 0-100% gas holdup log in stratified or homogenized flows.

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