08381815 is referenced by 47 patents and cites 1179 patents.

A method for treating a tar sands formation includes providing heat to at least part of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. The heat is allowed to transfer from the heaters to at least a portion of the formation. Fluids are produced from the formation through at least one production well that is located in at least two zones in the formation. The first zone has an initial permeability of at least 1 darcy. The second zone has an initial of at most 0.1 darcy. The two zones are separated by a substantially impermeable barrier.

Title
Production from multiple zones of a tar sands formation
Application Number
12/106008
Publication Number
8381815 (B2)
Application Date
April 18, 2008
Publication Date
February 26, 2013
Inventor
Harold J Vinegar
Bellaire
TX, US
John Michael Karanikas
Houston
TX, US
Assignee
Shell Oil Company
TX, US
IPC
E21B 43/24
E21B 36/00
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