Controlled gas trap system

Details Controlled gas trap system Controlled gas trap system

1992-02-14

1993-04-06

Melius, Terry Lee

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Indicating, testing or measuring a condition of the formation

175206, 175207, 73153, 55203, E21B 4400, E21B 4900

Patent

active

051995093

ABSTRACT:
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.

REFERENCES:
patent: 4319482 (1982-03-01), Bunner
patent: 4326863 (1982-04-01), Day et al.
patent: 4358298 (1982-11-01), Ratcliff
patent: 4536286 (1985-08-01), Nugent
Evaluation of Gas-Extraction Efficiency During Mud Logging Operations S. S. Elder, SPE/IADC 16158.
Improved Methods for Sampling Gas and Drill Cuttings R. D. Williams, et al., SPE 16759.
New System Provides Continuous Quantitative Analysis of Gas Concentration in the Mud While Drilling; V. C. Kelessidis, et al., SPE 19562.
New Gas Logging System Improves Gas Shows Analysis and Interpretation L. L. de Pazzis, SPE 19605.
A New Surface Gas Detector for Drilling Fluids H. K. Johnson et al., OTC 5793.

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