Texaco Inc.

Scott A Hanson

Howard L McKinzie

Alan C Wright

Patrick Lee DeLaune

Hossein Aghazeynali

Methods and apparatus for improving the quantitative measurement and detection of gas entrapped in drilling fluid during a drilling operation are disclosed. A sealed gas sampler is provided for agitating the mud to evolve gas samples. A known quantity of a standard gas is injected into the evolved gas stream. By monitoring the quantitative amount of the standard gas measured, the samples of evolved gas may be corrected for various error sources such as gas saturation of the sample stream.

Method and apparatus for stabilizing a quantitative measurement gas trap

A method and apparatus for extracting hydrocarbon gas from drilling fluid samples utilizes microwave energy as the source for heating a sample, containing water, sufficiently to cause the extraction of the hydrocarbon gases therefrom. Either a batch or a continuous operation can be realized using this method.

Microwave hydrocarbon gas extraction system

An improved gas trap for mud logging is vertically mounted such that its lower end is constantly beneath the surface of mud flowing in a tank. The mud is drawn into the housing where it is agitated to release the entrained gases which are drawn off for measurement. The spent mud is returned to the tank through a mud exit port and related pipe to a point below the level of the mud and remote from the mud intake to the gas trap. This gas trap is insensitive to mud level changes and is relatively free of maintenance requirements.

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Houston, TX, United States of America

Scott A Hanson