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Title: Creating and maintaining a gas cap in tar sands formations

Abstract

Methods for treating a tar sands formation are disclosed herein. Methods for treating a tar sands formation may include providing heat to at least part of a hydrocarbon layer in the formation from one or more heaters located in the formation. Pressure may be allowed to increase in an upper portion of the formation to provide a gas cap in the upper portion. At least some hydrocarbons are produced from a lower portion of the formation.

Inventors:
 [1];  [2];  [2];  [1]
  1. (Bellaire, TX)
  2. (Houston, TX)
Publication Date:
Research Org.:
Shell Oil Company (Houston, TX)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014494
Patent Number(s):
7,677,310
Application Number:
U S Patent Application 11/975,689
Assignee:
Shell Oil Company (Houston, TX) ORO
DOE Contract Number:
AC05-00OR22725; AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Vinegar, Harold J., Karanikas, John Michael, Dinkoruk, Deniz Sumnu, and Wellington, Scott Lee. Creating and maintaining a gas cap in tar sands formations. United States: N. p., 2010. Web.
Vinegar, Harold J., Karanikas, John Michael, Dinkoruk, Deniz Sumnu, & Wellington, Scott Lee. Creating and maintaining a gas cap in tar sands formations. United States.
Vinegar, Harold J., Karanikas, John Michael, Dinkoruk, Deniz Sumnu, and Wellington, Scott Lee. 2010. "Creating and maintaining a gas cap in tar sands formations". United States. doi:. https://www.osti.gov/servlets/purl/1014494.
@article{osti_1014494,
title = {Creating and maintaining a gas cap in tar sands formations},
author = {Vinegar, Harold J. and Karanikas, John Michael and Dinkoruk, Deniz Sumnu and Wellington, Scott Lee},
abstractNote = {Methods for treating a tar sands formation are disclosed herein. Methods for treating a tar sands formation may include providing heat to at least part of a hydrocarbon layer in the formation from one or more heaters located in the formation. Pressure may be allowed to increase in an upper portion of the formation to provide a gas cap in the upper portion. At least some hydrocarbons are produced from a lower portion of the formation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2010,
month = 3
}

Patent:

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  • Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons are produced from the portion.
  • Methods for treating a tar sands formation are described herein. Methods for treating a tar sands may include heating a portion of a hydrocarbon layer in the formation from one or more heaters located in the portion. The heat may be controlled to increase the permeability of at least part of the portion to create an injection zone in the portion with an average permeability sufficient to allow injection of a fluid through the injection zone. A drive fluid and/or an oxidizing fluid may be provided into the injection zone. At least some hydrocarbons including mobilized hydrocarbons are produced frommore » the portion.« less
  • A method for treating formations which contain particulate fines to decrease movement of or swelling of the fines when a fluid passes through the formation, thus maintaining the permeability of the formation, comprising injecting into the formation an organosilane or an ester of an organosilane, preferably in a hydrocarbon carrier liquid.
  • Injection rates were measured for laboratory and field tests to observe the effect on permeability of a flooding solution. The solution composition was an oil-scavenging compound (cationic trimethylene diamine, e.g., Ethoduomeen T/25), a bactericide (imidazoline, e.g., Amino ''O''), water, and potassium chloride (100 to 500,000 ppm). The diamine, imidazoline and potassium chloride all help to reduce clay swelling in the presence of water, and hence tend to maintain or increase the permeability of the reservoir. Potassium ion exchanges with ions in the clay and holds layers of clay together, excluding water. The diamine molecules are adsorbed as ions between themore » clay layers, preventing water from entering. The bactericides do this to a lesser extent.« less
  • A method for consolidating sand around a well, involving injecting hot water or steam through well casing perforations in to create a cement-like area around the perforation of sufficient rigidity to prevent sand from flowing into and obstructing the well. The cement area has several wormholes that provide fluid passageways between the well and the formation, while still inhibiting sand inflow.