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:
Aug. 24, 1982
Filed:
Jul. 18, 1980
William C Carmichael, Atlanta, GA (US);
Other;
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.