Gas generator for pressurizing downhole samples
First Claim
1. A method of pressurizing a fluid sample, the method comprising:
- disposing a fluid sampler comprising a sampling chamber, a power device, and a pressure assembly comprising an activation mechanism in a subterranean wellbore, wherein the pressure assembly comprises a pressure generating agent, wherein the power device is positioned between the sampling chamber and the pressure assembly, and wherein the pressure assembly is at or near atmospheric pressure while disposing the fluid sampler in the subterranean wellbore;
obtaining a fluid sample in the sampling chamber while maintaining the pressure assembly at or near atmospheric pressure;
activating, within the subterranean wellbore, the pressure generating agent with the activation mechanism in response to obtaining the fluid sample in the sampling chamber;
generating a pressurized fluid having a pressure greater than atmospheric pressure within the pressure assembly in response to activating the pressure generating agent; and
pressurizing the fluid sample using the pressurized fluid.
1 Assignment
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Accused Products
Abstract
An apparatus for obtaining fluid samples in a subterranean wellbore comprises a carrier assembly configured to be disposed in a subterranean wellbore; a sampling chamber operably associated with the carrier assembly; a pressure assembly coupled to the sampling chamber and configured to pressurize a fluid sample obtained in the sampling chamber, wherein the pressure assembly is configured to contain a pressure generating agent; an activation mechanism configured to activate the pressure generating agent; and a power device operably associated with the carrier assembly and configured to provide an impulse for activating the activation mechanism, wherein the power device is not disposed on the pressure assembly.
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Citations
20 Claims
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1. A method of pressurizing a fluid sample, the method comprising:
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disposing a fluid sampler comprising a sampling chamber, a power device, and a pressure assembly comprising an activation mechanism in a subterranean wellbore, wherein the pressure assembly comprises a pressure generating agent, wherein the power device is positioned between the sampling chamber and the pressure assembly, and wherein the pressure assembly is at or near atmospheric pressure while disposing the fluid sampler in the subterranean wellbore; obtaining a fluid sample in the sampling chamber while maintaining the pressure assembly at or near atmospheric pressure; activating, within the subterranean wellbore, the pressure generating agent with the activation mechanism in response to obtaining the fluid sample in the sampling chamber; generating a pressurized fluid having a pressure greater than atmospheric pressure within the pressure assembly in response to activating the pressure generating agent; and pressurizing the fluid sample using the pressurized fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of generating pressure for use in pressurizing a fluid sample within a subterranean wellbore, the method comprising:
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positioning a sampling chamber, a power device, and a pressure assembly comprising an activation mechanism and a pressure generating agent within a subterranean wellbore, wherein the pressure assembly is at a first pressure when the pressure assembly is positioned in the subterranean wellbore, and wherein the power device is positioned between the sampling chamber and the pressure assembly; obtaining a fluid sample in the sampling chamber; activating, within the subterranean wellbore, the pressure generating agent with the activation mechanism to generate a pressurized fluid in response to obtaining the fluid sample in the sample chamber, wherein the pressurized fluid is at a second pressure, and wherein the second pressure is greater than the first pressure; and using the pressurized fluid to pressurize the fluid sample in the sampling chamber in response to the activating. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification