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:
Jan. 17, 2017
Filed:
Jun. 25, 2009
Applicants:
Steven Martin Hudson, Dorset, GB;
Alexandra Vasil'evna Rogacheva, Southampton, GB;
Inventors:
Steven Martin Hudson, Dorset, GB;
Alexandra Vasil'evna Rogacheva, Southampton, GB;
Assignee:
Expro North Sea Limited, Aberdeen, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 13/02 (2006.01); G01V 3/00 (2006.01); F16D 31/00 (2006.01); F16D 33/00 (2006.01); F16D 33/02 (2006.01); F16D 31/02 (2006.01); F16D 39/00 (2006.01); E21B 41/00 (2006.01);
U.S. Cl.
CPC ...
E21B 41/0085 (2013.01);
Abstract
Downhole electrical power generation apparatus and methods of using stored pressurized gas and/or ambient downhole pressure. One example comprises first and second fluid receiving chambers, a fluid communication path for allowing flow of fluid from the first chamber via the fluid communication path to the second chamber and a turbine generator disposed so that fluid flowing from the first chamber via the fluid communications path to the second chamber operates the turbine generator to generate electrical power.