Formation fluid sampling tools and methods utilizing chemical heating
First Claim
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1. 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.
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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.
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Citations
38 Claims
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1. A method, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification