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:
Oct. 30, 2007
Filed:
Dec. 28, 2004
Joseph P. Varkey, Missouri City, TX (US);
Byong Jun Kim, Sugar Land, TX (US);
Willem A. Wijnberg, Houston, TX (US);
Faisal Arif, Al-Khobar, SA;
Anil Singh, Stafford, TX (US);
Jeffrey Arnaud, Missouri City, TX (US);
John Cuong Nguyen, Tomball, TX (US);
Joseph P. Varkey, Missouri City, TX (US);
Byong Jun Kim, Sugar Land, TX (US);
Willem A. Wijnberg, Houston, TX (US);
Faisal Arif, Al-Khobar, SA;
Anil Singh, Stafford, TX (US);
Jeffrey Arnaud, Missouri City, TX (US);
John Cuong Nguyen, Tomball, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Disclosed are durable corrosion resistant wellbore electrical cables including a coated electrical conductor, a polymeric protective layer for trapping coating flakes, a first insulating jacket disposed adjacent to the polymeric protective layer and having a first relative permittivity. A second insulating jacket is disposed adjacent to the first insulating jacket and has a second relative permittivity that is less than the first relative permittivity. Another aspect of the invention is a method for manufacturing a cable that includes providing a coated electrical conductor, extruding a polymeric protective layer over the coated electrical conductor, extruding a first insulating jacket over the protective polymeric layer, and extruding a second insulating jacket thereon. Cables of the invention may further include armor wire layers or even current return conductors.