Single packer system for use in heavy oil environments
First Claim
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1. A system for use in a wellbore comprising:
- a single packer having;
an outer structural layer expandable in a wellbore across an expansion zone, the outer structural layer comprising at least one drain within the expansion zone;
an inflatable bladder disposed within the outer structural layer;
a fluid injection system to inject a substance into the expansion zone via the least one drain to lower the viscosity of a fluid being sampled.
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Abstract
A technique involves collecting formation fluids through a single packer having at least one drain located within the single packer. The single packer comprises an outer seal layer, and the at least one drain is positioned in the outer seal layer. A viscosity system also is incorporated and enables the viscosity of a surrounding fluid to be selectively lowered for sampling.
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Citations
20 Claims
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1. A system for use in a wellbore comprising:
a single packer having; an outer structural layer expandable in a wellbore across an expansion zone, the outer structural layer comprising at least one drain within the expansion zone; an inflatable bladder disposed within the outer structural layer; a fluid injection system to inject a substance into the expansion zone via the least one drain to lower the viscosity of a fluid being sampled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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deploying a single packer into a wellbore, the single packer having a first drain for receiving formation fluid; expanding the single packer against a wall of the wellbore to create a seal to substantially prevent fluid communication between an area above the single packer and an area below the single packer; and injecting a substance through the first drain or a second drain to lower a viscosity of formation fluid about the wellbore. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method, comprising:
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providing a single expandable packer with a drain in an outer seal layer; delivering the single expandable packer downhole into a wellbore; expanding the single expandable packer against a surrounding wellbore wall; lowering the viscosity of a fluid to be sampled by injecting a substance into the wellbore; and intaking the fluid through the drain. - View Dependent Claims (17, 18, 19, 20)
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Specification