Method of drilling from a shaft for underground recovery of hydrocarbons
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United States of America Patent
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Mar 6, 2012
Grant Date -
Jan 24, 2008
app pub date -
Apr 19, 2007
filing date -
Apr 21, 2006
priority date (Note) -
Expired
status (Latency Note)
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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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