Method for evaluating and monitoring formation fracture treatment using fluid pressure waves
AssigneeSeismos, Inc.
InventorsJakub Felkl, Youli Quan, Junwei Zhang, Kaitlyn Christine Mascher-Mace, Panagiotis Adamopoulos
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Abstract
A method for characterizing a hydraulic fracture in a subsurface formation includes inducing a pressure change in a well drilled through the subsurface formation. At least one of pressure and pressure time derivative are measured in or at a location proximate to a wellhead for a selected length of time. At least one of a physical parameter, a time derivative, and a change in the parameter with respect to time of the physical parameter of at least one fracture is determined using the measured at least one of pressure and the time derivative of pressure.
Claims19
A method for characterizing a hydraulic fracture in a subsurface formation, comprising:
- inducing a pressure change in a well drilled through the subsurface formation, the inducing a pressure change inducing tube waves in the well;
- measuring at a location proximate to a wellhead at least one of pressure and a time derivative of pressure in the well for a selected length of time;
- and
- determining at least one of a value of and change in the value with respect to time of the mathematical product of fracture permeability and fracture width divided by viscosity of a fluid, of at least one fracture in a formation adjacent to the well using tube wave components of the measured at least one of pressure and the time derivative of pressure.
Dependencies are inferred from the claim text.