Title: Welding shield for coupling heaters

Abstract

Systems for coupling end portions of two elongated heater portions and methods of using such systems to treat a subsurface formation are described herein. A system may include a holding system configured to hold end portions of the two elongated heater portions so that the end portions are abutted together or located near each other; a shield for enclosing the end portions, and one or more inert gas inlets configured to provide at least one inert gas to flush the system with inert gas during welding of the end portions. The shield may be configured to inhibit oxidation during welding that joins the end portions together. The shield may include a hinged door that, when closed, is configured to at least partially isolate the interior of the shield from the atmosphere. The hinged door, when open, is configured to allow access to the interior of the shield.

Inventors:

Menotti, James Louis ^[1]

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+ Show Inventor Affiliations

1. Dickinson, TX

Issue Date:

Tue Mar 09 00:00:00 EST 2010

Research Org.:

Shell Oil Company (Houston, TX)

Sponsoring Org.:

USDOE

OSTI Identifier:

1014512

Patent Number(s):

7673786

Application Number:

U S Patent Application 11/788,826

Assignee:

Shell Oil Company (Houston, TX)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

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B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

B32B1/08 - Tubular products
B32B15/013 - {one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium}
B32B15/015 - {the said other metal being copper or nickel or an alloy thereof}
B32B2307/202 - Conductive
B32B2307/208 - Magnetic, paramagnetic
B32B9/002 - {comprising natural stone or artificial stone}
B32B9/045 - {of synthetic resin}

C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

C21D2211/001 - Austenite
C21D2211/004 - Dispersions
C21D2211/005 - Ferrite
C21D6/002 - {containing Cr
C21D6/007 - {containing Co}

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

C22C38/02 - containing silicon
C22C38/04 - containing manganese
C22C38/10 - containing cobalt
C22C38/12 - containing tungsten, tantalum, molybdenum, vanadium, or niobium
C22C38/14 - containing titanium or zirconium
C22C38/24 - with vanadium
C22C38/28 - with titanium or zirconium
C22C38/30 - with cobalt

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING

E21B36/04 - using electrical heaters
E21B43/2401 - {by means of electricity}

G - PHYSICS G05 - CONTROLLING G05F - SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES

G05F1/10 - Regulating voltage or current

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S166/902 - for inhibiting corrosion or coating

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DOE Contract Number:  

AC05-00OR2272

Resource Type:

Patent

Country of Publication:

United States

Language:

English