The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 06, 2012

Filed:

Apr. 19, 2007
Applicants:

John David Watson, Evergreen, CO (US);

Michael Helmut Kobler, Sebastopol, CA (US);

Dana Brock, Sebastopol, CA (US);

Inventors:

John David Watson, Evergreen, CO (US);

Michael Helmut Kobler, Sebastopol, CA (US);

Dana Brock, Sebastopol, CA (US);

Assignee:

OSUM Oil Sands Corp., Calgary, Alberta, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 7/04 (2006.01); E02D 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention discloses a selection process for installing underground workspace in or near a hydrocarbon deposit that is an appropriate workspace from which to drill, operate and service wells applicable to any of a number of methods of recovering hydrocarbons. The present invention includes a number of innovative methods for developing workspace for drilling from a shaft installed above, into or below a hydrocarbon deposit, particularly when the hydrocarbon reservoir is at significant formation pressure or has fluids (water oil or gases) that can enter the workspace. These methods can also be used for developing workspace for drilling from a tunnel installed above, into or below a hydrocarbon deposit. The present invention also discloses a procedure for evaluating the geology in and around the reservoir and using this information to select the most appropriate method of developing workspace for drilling from a shaft and/or tunnel.


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