Method, apparatus, and composition for increased recovery of hydrocarbons by paraffin and asphaltene control from reaction of fuels and selective oxidizers in the subterranean environment
US10081759B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 12, 2013 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Apr 3, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method, apparatus and composition for safe energy delivery down hole resulting in increased recovery of subterranean hydrocarbons. The method utilizes, for example, the reaction of non-alkane fuels and selective oxidizers which are non-selective toward alkane chemical compounds. The method further utilizes an acid solution reaction with aforementioned reaction for elimination of any insoluble products of reaction permitting flow within formation strata. The energy released in the subterranean reaction is utilized to heat the production tubing, the wellbore, the formation or the formation hydrocarbons thereby lowering fluid viscosity and permitting greater flow especially for heavy oils, asphaltene deposits and/or paraffin deposits. Further, safe delivery of oxidizers can be accomplished without limit on depth as the selective oxidizer may be delivered to point of use down hole as most all formations of interest contain primarily alkane hydrocarbons and will not react with the non-alkane selective oxidizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.