CPC E21B 36/008 (2013.01) [E21B 41/02 (2013.01); E21B 43/241 (2013.01)] | 20 Claims |
1. A method comprising:
providing a treatment composition comprising a carrier fluid, a catalyst, a first reactant, a second reactant, a solvent, an emulsifier, and a foaming agent, wherein the first and second reactants are capable of reacting in an exothermic chemical reaction, and at least one of the first reactant and the second reactant is embedded in a solid matrix including a material to delay release of the reactant or is encapsulated with an encapsulating material to form a solid capsule to delay release of the reactant; and
introducing the treatment composition into at least a portion of a conduit or container while the portion of the conduit or container is at a temperature of less than 30° C., the conduit or container having a contaminant comprising scale, a hydrate, or both, residing therein;
whereafter at least a portion of the scale, the hydrate or both becomes dissolved in the solvent or mobilized in the conduit or container.
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