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:
Jun. 17, 2003
Filed:
Jul. 27, 2000
Applicant:
Inventors:
L. Donald Maus, Houston, TX (US);
Mark E. Ehrhardt, Houston, TX (US);
Assignee:
ExxonMobil Upstream Research Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/106 ;
U.S. Cl.
CPC ...
E21B 4/106 ;
Abstract
Gas storage is provided for a subsea gas-lifted riser during offshore drilling and/or production operations. One or more gas storage chambers positioned along and about the subsea riser are connected to a gas conduit. Each chamber has at least one valve for controlling passage of gas out of the chamber and into the gas conduit. The valves serve to allow the gas from the storage chambers to be injected as lift gas as needed.