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Title: Heating systems for heating subsurface formations

Abstract

Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

Inventors:
 [1];  [2]
  1. Houston, TX
  2. Bellaire, TX
Publication Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1016684
Patent Number(s):
7,931,086
Application Number:
US Patent Application 12/106,060
Assignee:
Shell Oil Company (Houston, TX) ALO
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Nguyen, Scott Vinh, and Vinegar, Harold J. Heating systems for heating subsurface formations. United States: N. p., 2011. Web.
Nguyen, Scott Vinh, & Vinegar, Harold J. Heating systems for heating subsurface formations. United States.
Nguyen, Scott Vinh, and Vinegar, Harold J. 2011. "Heating systems for heating subsurface formations". United States. doi:. https://www.osti.gov/servlets/purl/1016684.
@article{osti_1016684,
title = {Heating systems for heating subsurface formations},
author = {Nguyen, Scott Vinh and Vinegar, Harold J},
abstractNote = {Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2011,
month = 4
}

Patent:

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  • A gas burner assembly for heating a subsurface formation includes an oxidant conduit, a fuel conduit, and a plurality of oxidizers coupled to the oxidant conduit. At least one of the oxidizers includes a mix chamber for mixing fuel from the fuel conduit with oxidant from the oxidant conduit, an igniter, and a shield. The shield includes a plurality of openings in communication with the oxidant conduit. At least one flame stabilizer is coupled to the shield.
  • A heating system for a subsurface formation is described. The heating system includes three substantially u-shaped heaters with first end portions of the heaters being electrically coupled to a single, three-phase wye transformer and second end portions of the heaters being electrically coupled to each other and/or to ground. The three heaters may enter the formation through a first common wellbore and exit the formation through a second common wellbore so that the magnetic fields of the three heaters at least partially cancel out in the common wellbores.
  • A method of heating a portion of a subsurface formation includes drawing fuel on a fuel carrier through an opening formed in the formation. Oxidant is supplied to the fuel at one or more locations in the opening. The fuel is combusted with the oxidant to provide heat to the formation.
  • A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.
  • A method for reducing the amount of gas or water produced by an oil well, due to coning consists in the formation of a thin, substantially horizontal, permeable barrier of portland cement in the formation. A substantial horizontal fracture is formed which extends into the oil zone. A material insoluble in oil and in water is placed in the fracture. This reduces the permeability of the formation adjacent to the fracture. Thereafter, a slurry of Portland cement is injected into the fracture and is held there until it sets.