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US 7,111,681 B2Granted
Interpretation and design of hydraulic fracturing treatments
AssigneeRegents of the University of Minnesota
InventorsEmmanuel Detournay, Jose Ignacio Adachi, Dmitriy Igor Garagash, Alexei A. Savitski
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Abstract
Solutions for the propagation of a hydraulic fracture in a permeable elastic rock and driven by injection of a Newtonian fluid. Through scaling, the dependence of the solution on the problem parameters is reduced to a small number of dimensionless parameters.
Claims7
A method comprising:
- receiving hydraulic fracturing treatment data;
- performing inversion of fracture parameters obtained from the hydraulic fracturing treatment data in times that include real time;
- evaluating a forward model comprising pre-tabulated solutions in terms of at least two dimensionless evolution parameters to predict the evolution of a fracture, wherein the forward model comprises pre-tabulated scaled solutions in terms of at least one dimensionless parameter;
- and;
- unscaling the pre-tabulated solutions to produce a value for at least one physical parameter.
2 more elements
A method of designing a hydraulic fracturing treatment comprising:
- receiving hydraulic fracturing treatment data;
- performing inversion of fracture parameters obtained from the hydraulic fracturing treatment data in times that include real time;
- storing pre-tabulated solutions that represent problem solution points in a parametric space, wherein the parametric space corresponds to a scaling of the problem parameters comprising one or more of a dimensionless crack opening and a dimensionless net pressure;
- and
- determining a volumetric rate based on a desired trajectory in the parametric space.
2 more elements
Dependencies are inferred from the claim text.