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US 7,500,528 B2Granted
Low temperature barrier wellbores formed using water flushing
AssigneeShell Oil Company
InventorsBilly John McKinzie, II, Thomas Joseph Keltner
Life of this patent
Estimating the term…
Abstract
A method of forming an opening for a low temperature well is described. The method includes drilling an opening in a formation. Water is introduced into the opening to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the opening. Water is produced from the opening. A low temperature fluid is applied to the opening.
Claims20
A method of forming a low temperature well, comprising:
- drilling an opening in a formation;
- introducing water into the opening to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the opening;
- placing a canister of a freeze well in the opening;
- and
- circulating a low temperature fluid in the canister to reduce the temperature of a part of the formation.
2 more elements
A method of forming a low temperature barrier, comprising:
- forming a plurality of wellbores in a formation;
- placing conduits in at least some of the wellbores;
- introducing water into two or more wellbores from the conduits to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the wellbores;
- placing canisters of freeze wells in two or more wellbores without removing the water from the wellbores;
- and
- circulating low temperature fluid in the canisters to reduce the temperature of a part of the formation.
3 more elements
A method of forming a low temperature well, comprising:
- forming a wellbore in a formation;
- placing a conduit in the wellbore;
- introducing water into the wellbore from the conduit to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the wellbore;
- placing a canister of a freeze well in the wellbore;
- and
- circulating a low temperature fluid in the canister to reduce the temperature of a part of the formation.
3 more elements
Dependencies are inferred from the claim text.