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:
Apr. 01, 2014
Filed:
Feb. 06, 2012
Leo Chirovsky, East Windsor, NJ (US);
Anthony Durkowski, Round Rock, TX (US);
Kevin Hiles, Princeton Junction, NJ (US);
Jani Reijonen, Princeton, NJ (US);
Matthieu Simon, Houston, TX (US);
Peter Wraight, Skillman, NJ (US);
Leo Chirovsky, East Windsor, NJ (US);
Anthony Durkowski, Round Rock, TX (US);
Kevin Hiles, Princeton Junction, NJ (US);
Jani Reijonen, Princeton, NJ (US);
Matthieu Simon, Houston, TX (US);
Peter Wraight, Skillman, NJ (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A well logging instrument includes an instrument housing to traverse a wellbore penetrating subsurface formations. An electrically operated energy source that emits ionizing radiation is disposed inside the housing. An insulating sleeve is disposed between the energy source and an interior wall of the housing. The insulating sleeve comprises a thin dielectric film arranged in a plurality of tightly fitting layers of dielectric material disposed adjacent to each other and successively. A thickness of each layer and a number of layers is selected to provide a dielectric strength sufficient to electrically insulate the energy source from the housing and to provide a selected resistance to dielectric failure resulting from the ionizing radiation.