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Gas separators modified for horizontal well

IP.com Disclosure Number: IPCOM000243942D
Publication Date: 2015-Oct-29
Document File: 1 page(s) / 14K

Publishing Venue

The IP.com Prior Art Database

Abstract

The ESP gas separator is used to reduce free gas in the entering fluid so that the pump can handle fluids The gas separator draws in the well fluid with a fluid moving device impeller auger etc The separator spin rotates the fluids to encourage centrifugal separation and passes through splitter which separates the fluids so that the lightest fluid which will be close to the shaft is returned to the casing annulus where the buoyancy the causes the gassy fluid to continues up the casing The heavier fluid is conducted on to the pump The gas separator flows a relatively fixed volume of fluids determined by the design of the fluid mover If the total of the fluid entering the pump and the volume and the gas up the casing are less than the flow of the fluid mover That amount of fluid is recirculated back to the separator intake With a horizontal well there is a problem because there is there is no inclination to aid the buoyancy in removing the gas from the area It has been proposed that the gas is dragged with the recycled volume of fluid back into the intake This cloud of gassy fluid remains around the gas separator until other forces cause it to move The fluid being produced by the well does not cease just because the pump is not producing and it is thought that this incoming fluid will eventually push the cloud away from the separator intake so that the separator can start to function again This on again off again cyclic behavior is very detrimental to the run life of the equipment

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Gas separators modified for horizontal well

The ESP gas separator is used to reduce free gas in the entering fluid so that the pump can handle fluids. The gas separator draws in the well fluid with a fluid moving device (impeller auger etc.). The separator spin (rotates) the fluids to encourage centrifugal separation and passes through splitter which separates the fluids so that the lightest fluid which will be close to the shaft is returned to the casing annulus where the buoyancy the causes the gassy fluid to continues up the casing. The heavier fluid is conducted on to the pump. The gas separator flows a relatively fixed volume of fluids determined by the design of the fluid mover. If the total of the fluid entering the pump and the volume and the gas up the casing are less than the flow of the fluid mover. That amount of fluid is recirculated back to the separator intake. With a horizontal well there is a problem because there is there is no inclination to aid the buoyancy in removing the gas from the area. It has been proposed that the gas is dragged with the recycled volume of fluid back into the intake. This cloud of gassy fluid remains around the gas separator until other forces cause it to move. The fluid being produced by the well does not cease just because the pump is not producing and it is thought that this incoming fluid will eventually push the cloud away from the separator intake so that the separator can start to function again. This on again off again cycl...