Fracture wave depth, borehole bottom condition, and conductivity estimation method
AssigneeSeismos, Inc.
InventorsYouli Quan, Junwei Zhang, Jakub Felkl, Jeremy Dumoit
Life of this patent
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Abstract
A method for characterizing a hydraulic fracture in a subsurface formation includes inducing a pressure change in a borehole drilled through the subsurface formation. At least one of pressure and a time derivative of pressure is measured in the borehole for a selected length of time. At least one physical parameter of at least one fracture is determined using the measured pressure and/or the time derivative of pressure. A method for characterizing hydraulic fracturing rate uses microseismic event count measured through the borehole and its real-time implementation.
Claims12
A method for characterizing fractures and hydraulic fracturing treatment in a subsurface formation, comprising:
- pumping a hydraulic fracturing treatment into the subsurface formation through a wellbore;
- inducing seismic energy in the wellbore;
- measuring at least one of pressure and time derivative of pressure in the wellbore while fracturing treatment is ongoing;
- detecting and analyzing the seismic energy induced in the wellbore, in a form of a frequency spectrum of tube waves reflected from the subsurface formation;
- and
- using detected resonances in the reflected tube waves and change of the detected resonances over time to characterize at least one of, (i) a wellbore condition, (ii) a property of the hydraulic fracturing treatment, (iii) at least one fracture in the subsurface formation or (iv) a fracture network in the subsurface formation.
Dependencies are inferred from the claim text.