Invention Grant
- Patent Title: System and methods for estimating subsurface horizontal principal stresses in anisotropic formations
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Application No.: US17650922Application Date: 2020-09-03
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Publication No.: US11753933B2Publication Date: 2023-09-12
- Inventor: Brian Crawford , William C. Reese , Jordan A. Freysteinson , Janelle M. Homburg
- Applicant: ExxonMobil Technology and Engineering Company
- Applicant Address: US TX Spring
- Assignee: ExxonMobil Technology and Engineering Company
- Current Assignee: ExxonMobil Technology and Engineering Company
- Current Assignee Address: US TX Spring
- Agency: ExxonMobil Technology and Engineering Company—Law Department
- International Application: PCT/US2020/070488 2020.09.03
- International Announcement: WO2021/087501A 2021.05.06
- Date entered country: 2022-02-14
- Main IPC: E21B49/02
- IPC: E21B49/02 ; G01N33/24 ; E21B49/00 ; E21B21/08 ; E21B43/26 ; E21B49/06

Abstract:
A method for predicting a total minimum horizontal stress (σh) and a total maximum horizontal stress (σH) for an anisotropic formation may comprise: measuring Young's moduli parallel ±15° and perpendicular ±15° to a transverse isotropy plane of a horizontal core sample from the anisotropic subterranean formation; measuring Poisson's ratios parallel ±15° and perpendicular ±15° to the transverse isotropy plane of the horizontal core sample; inputting the measured Young's moduli and Poisson's ratios of the horizontal core sample into a 1-dimensional mechanical earth model (1-D MEM); and calculating, using the 1-D MEM, a predicted total minimum horizontal stress (σh) and a predicted total maximum horizontal stress (σH).
Public/Granted literature
- US20230082833A1 System and Methods for Estimating Subsurface Horizontal Principal Stresses in Anisotropic Formations Public/Granted day:2023-03-16
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