The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2021
Filed:
Jun. 08, 2018
Jianlin Wang, Calgary, CA;
Weidong Guo, Houston, TX (US);
LU Dong, Calgary, CA;
Chen Fang, Houston, TX (US);
Mathew D. Suitor, Calgary, CA;
Jianlin Wang, Calgary, CA;
Weidong Guo, Houston, TX (US);
Lu Dong, Calgary, CA;
Chen Fang, Houston, TX (US);
Mathew D. Suitor, Calgary, CA;
ExxonMobil Upstream Research Company, Spring, TX (US);
Abstract
Methods to optimize solvent use in solvent-dominated processes for recovery of hydrocarbons. Methods include injecting a solvent composition into a reservoir at a pressure above a liquid/vapor phase change of the solvent composition; injecting a chaser into the reservoir at a pressure above the liquid/vapor phase change of the solvent composition; allowing the solvent composition to mix with hydrocarbons in the reservoir and at least partially dissolve into the hydrocarbons to produce a solvent/hydrocarbon mixture; reducing the pressure in the reservoir below the liquid/vapor phase change pressure of the solvent composition thereby flowing at least a fraction of the solvent/hydrocarbon mixture from the reservoir; and repeating these steps as required.