METHOD FOR DRILLING AND CEMENTING A WELL
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United States of America Patent
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N/A
Issued Date -
Mar 29, 2007
app pub date -
Jul 17, 2006
filing date -
Jul 19, 2005
priority date (Note) -
Abandoned
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Abstract
A method for drilling and cementing a borehole to access at least a portion of a formation of interest, comprising: drilling a borehole using a drill string including an external packer and a drilling assembly to access at least a portion of a formation of interest; using a drilling fluid selected to minimize adverse effects on the at least a portion of the formation of interest when drilling into the at least a portion of the formation of interest; setting the packer to create a seal in the borehole so that (i) an upper drill string/borehole annulus above the packer is isolated from (ii) a lower drill string/borehole annulus below the packer, with the at least a portion of the formation of interest being open to the lower drill string/borehole annulus; and introducing cement above the external packer into the upper drill string/borehole annulus.
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