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US 8,283,174 B2Granted
Formation fluid sampling tools and methods utilizing chemical heating
AssigneeSchlumberger Technology Corporation
InventorsRonald E. G. Van Hal, Anthony Goodwin, Oliver C. Mullins, Peter S. Hegeman, Bhavani Raghuraman, Soraya S. Betancourt, Cosan Ayan, Ricardo Vasques, Francois Xavier Dubost, Christopher Scott Del Campo
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Abstract
A formation fluid sampling tool is provided with reactants which are carried downhole and which are combined in order to generate heat energy which is applied to the formation adjacent the borehole. By applying heat energy to the formation, the formation fluids are heated, thereby increasing mobility, and fluid sampling is expedited.
Claims38
A method, comprising:
- locating a tool containing at least two separated reactants in a subsurface formation;
- injecting an injection fluid from the tool into the formation;
- using the reactants in an exothermic chemical reaction to heat injection fluid;
- and
- withdrawing into the tool at least some of the injection fluid and some formation hydrocarbon fluid from the formation.
2 more elements
Dependencies are inferred from the claim text.