Apparatus to increase oil well flow
US4345647A · kind A · utility
Inventor
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04F3/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of improving the rate of extraction of oil bearing liquid from an oil well comprising the steps of providing a sump in the well casing below the openings through the casing communicating with the oil bearing formation so that the oil bearing liquid flowing into the casing flows into the sump; removing the oil bearing liquid collected in the sump through an oil lift pipe whose intake is submerged in the oil bearing liquid so that the intake of the oil lift pipe remains submerged in the oil bearing liquid; and imposing a vacuum in the casing at the openings through the casing to the oil bearing formation and above the oil bearing liquid in the sump to increase the flow of oil bearing liquid from the oil bearing formation into the casing through the openings. The application also discloses the apparatus for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.