Single Packer System for Use in Heavy Oil Environments
First Claim
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1. A system for collecting fluid from a specific region of wellbore, comprising:
- a single packer having;
an outer structural layer expandable in a wellbore across an expansion zone, the outer structural layer comprising a plurality of drains within the expansion zone;
an inflatable bladder disposed within the outer structural layer;
a seal layer disposed around the outer structural layer; and
a viscosity system to lower the viscosity of a fluid being sampled through at least one drain of the plurality of drains.
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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.
52 Citations
25 Claims
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1. A system for collecting fluid from a specific region of wellbore, comprising:
a single packer having; an outer structural layer expandable in a wellbore across an expansion zone, the outer structural layer comprising a plurality of drains within the expansion zone; an inflatable bladder disposed within the outer structural layer; a seal layer disposed around the outer structural layer; and a viscosity system to lower the viscosity of a fluid being sampled through at least one drain of the plurality of drains. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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forming a single expandable packer with an outer seal layer; positioning a sample drain in the outer seal layer; and incorporating a viscosity system into the single expandable packer to enable lowering of the viscosity of a fluid to be sampled. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. 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; and intaking the fluid through the drain. - View Dependent Claims (20, 21, 22)
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23. A system, comprising:
a single packer having an outer seal layer;
a drain positioned in the outer seal layer; and
a viscosity system that can be selectively actuated to lower the viscosity of a surrounding fluid to be sampled.- View Dependent Claims (24, 25)
Specification