Well treatment fluids composition
AssigneeSolvay USA Inc.
InventorsChristopher Raymond Jones, Stephanie Edmunds, Jean C. Molina
Life of this patent
Estimating the term…
Abstract
A well treatment fluid composition that includes a tetrakis(hydroxyorgano)phosphonium salt and 1,3-dimethylol-5,5-dimethylhydantoin. Methods for preparing a well treatment fluid composition and treating a subterranean formation are also presented.
Claims14
A method for preparing a well treatment fluid composition comprising the steps of:
- obtaining a composition comprising a tetrakis(hydroxyorgano)phosphonium salt, 1,3-dimethylol-5,5-dimethylhydantoin, and optionally one or more members selected from the group consisting of:
- oxidizing viscosity breakers,
- quaternary ammonium compounds, and
- polymers of an unsaturated carboxylic acid or copolymers of an unsaturated carboxylic add with a sulphonic acid, said polymers or copolymers being terminated by a mono- or di-phosphonated unsaturated carboxylic add group or having such monomers incorporated into the polymer backbone,
- wherein the composition achieves a reduction of bacteria to give a total kill at 5 hour contact time;
- and
- diluting the composition to form a diluted composition.
A method for treating a subterranean formation comprising the step of introducing a composition into the formation, wherein the composition comprises a tetrakis(hydroxyorgano)phosphonium salt, 1,3-dimethylol-5,5-dimethylhydantoin, and optionally one or more members selected from the group consisting of:
- oxidizing viscosity breakers,
- quaternary ammonium compounds, and
- polymers of an unsaturated carboxylic acid or copolymers of an unsaturated carboxylic add with a sulphonic acid, said polymers or copolymers being terminated by a mono- or di-phosphonated unsaturated carboxylic add group or having such monomers incorporated into the polymer backbone,
- wherein the composition achieves a reduction of bacteria to give a total kill at 5 hour contact time.
Dependencies are inferred from the claim text.