Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis
AssigneeHexion Specialty Chemicals, Inc.
InventorsRobert R. McDaniel, Cody Ryan Peeples, Robin Pierce Gardner
Life of this patent
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Abstract
A method for determining fracture geometry of a subterranean formation from radiation emitted from a fracture in the formation, including measuring gamma-radiation emitted from the fracture; subtracting background radiation from the measured gamma-radiation to obtain a peak-energy measurement; comparing the peak-energy measurement with a gamma-ray transport/spectrometer response model; and determining formation fracture geometry of the fracture in accordance with values associated with the response model.
Claims16
1-20. (canceled)
A method of analyzing the results of a fracturing process, comprising:
- a) disposing in a formation fracture, a proppant and/or a fracturing fluid that comprises a radiation susceptible material;
- b) irradiating the radiation susceptible material with neutrons during a single logging pass of a logging tool;
- c) measuring gamma-radiation emitted from the radiation susceptible material;
- d) processing the measured gamma-radiation data in accordance with a Monte Carlo-based simulation model;
- and
- e) determining formation fracture geometry of the fracture.
Dependencies are inferred from the claim text.