Injection for sampling heavy oil
A downhole tool is conveyed within a borehole extending into a subterranean formation. A void is created in a sidewall of the borehole by extending a rotating member from the downhole tool into the sidewall. A portion of the sidewall surrounding the void is mechanically compressed, and the viscosity...
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Sprache: | eng |
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Zusammenfassung: | A downhole tool is conveyed within a borehole extending into a subterranean formation. A void is created in a sidewall of the borehole by extending a rotating member from the downhole tool into the sidewall. A portion of the sidewall surrounding the void is mechanically compressed, and the viscosity of hydrocarbons in the subterranean formation proximate the void is reduced by injecting a fluid from the downhole tool into the formation via the void. Fluid comprising the reduced viscosity hydrocarbons and the injected fluid may then be drawn from the subterranean formation into the downhole tool. |
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