Back to results
US 2004/0072700 A1Published application
Carbon dioxide compatible non-aqueous crosslinked fracturing fluids and methods for their use
AssigneeBJ Services Company
InventorsD.V. Satyanarayana Gupta, Greg Niechwiadowicz, Anita C. Jerat
Life of this patent
Estimating the term…
Abstract
Alcohol based hydraulic fracturing fluids useful for treating oil and gas wells are disclosed. The fluids are compatible with carbon dioxide, and comprise an alcohol, a polymer, a crosslinking agent, and a breaker. Hydroxypropyl guar with a molar substitution of about 1.2 to about 2.2 is identified as a presently preferred polymer.
Claims25
A composition comprising:
- a polymer;
- an alcohol solvent;
- a crosslinker;
- and
- a breaker;
- wherein:
- the polymer is soluble in water;
- the polymer is soluble in the alcohol solvent;
- and
- the polymer is soluble in the composition in the presence of carbon dioxide.
7 more elements
A composition comprising:
- hydroxypropyl guar polymer with a molar substitution of about 1.2 to about 2.2;
- an alcohol solvent;
- a zirconium crosslinker or titanium crosslinker;
- and
- a breaker;
- wherein:
- the polymer is soluble in water;
- the polymer is soluble in the alcohol solvent;
- the polymer is soluble in the composition in the presence of carbon dioxide.
6 more elements
A method of treating a downhole well formation, the method comprising:
- providing a composition comprising hydroxypropyl guar polymer with a molar substitution of about 1.2 to about 2.2, an alcohol solvent, a zirconium crosslinker or titanium crosslinker, and a breaker;
- pumping the composition into a wellbore;
- and
- contacting the composition and the formation.
1 more element
Dependencies are inferred from the claim text.