METHOD AND APPARATUS FOR LIBERATING GASES FROM DRILLING FLUID
First Claim
1. An apparatus for liberating gases from drilling fluid, the apparatus comprising:
- a sample enclosure having a liquid inlet and a gas sample outlet;
an agitator disposed within the sample enclosure and configured to agitate drilling fluid located within the sample enclosure to liberate gases entrained in the drilling fluid so that the gases can exit through the gas sample outlet; and
a brushless, DC motor rotatably coupled to the agitator to power the agitator.
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Accused Products
Abstract
A gas trap includes a sample enclosure, a bubbler enclosure, an agitator, and a brushless, DC motor. The sample enclosure has a liquid inlet, a gas sample outlet, and a sample enclosure wall with a sample enclosure wall portion and a shared wall portion. The bubbler enclosure has a bubbler air inlet, a bubbler air outlet, and a bubbler enclosure wall with a bubbler enclosure wall portion and the shared wall portion. The sample and bubbler enclosures are fluidly coupled through the shared wall portion so that sufficiently pressurized bubbler air entering through the bubbler air inlet maintains the drilling fluid in the sample enclosure at a level determined by the location of the bubbler air outlet when the liquid inlet and the bubbler air outlet are both submerged in the drilling fluid.
46 Citations
23 Claims
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1. An apparatus for liberating gases from drilling fluid, the apparatus comprising:
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a sample enclosure having a liquid inlet and a gas sample outlet; an agitator disposed within the sample enclosure and configured to agitate drilling fluid located within the sample enclosure to liberate gases entrained in the drilling fluid so that the gases can exit through the gas sample outlet; and a brushless, DC motor rotatably coupled to the agitator to power the agitator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for liberating gases entrained in a drilling fluid, the method comprising:
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submerging a liquid inlet of a sample enclosure in the liquid; and agitating the drilling fluid within the sample enclosure to liberate the gases entrained therein by using a brushless DC motor. - View Dependent Claims (14, 15, 16, 20, 21, 22, 23)
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- 17. A method as claimed in claim 17 wherein the brushless DC motor comprises a stator and a rotor directly coupled to a shaft extending from the brushless DC motor and rotatable relative to the stator in order to rotate the shaft, wherein rotation of the shaft results in the agitation.
Specification