Estimating permeability of reservoir rocks using mercury injection capillary pressure

US11467080B2 · kind B2 · utility

Assignee

• SAUDI ARABIAN OIL COMPANY · SA

Inventors

• Hongwen Zhao · Beijing, CN
• Yufeng Cui · Beijing, CN
• Ming Zhang · Beijing, CN
• Peng Lu · Dhahran, SA

Key dates

• Filing date: Aug 10, 2020
• Grant date: Oct 11, 2022
• Expiry date: Dec 17, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2015/0813
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Methods of estimating permeability of reservoir rocks using mercury injection capillary pressure can include: receiving mercury injection capillary pressure test data and porosity data for a core sample; determining a fractal dimension (D) for the core sample based on the received mercury injection capillary pressure test data for the core sample; determining a pore throat radius (Rd) for the core sample; determining a composite parameter (β) for the core sample where and estimating permeability (K) of the core sample based on a relationship of ln(K) as a function of ln(β) determined by performing a regression analysis data from other core samples from the reservoir.