Methods of drilling and completing well bores
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United States of America Patent
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-
Apr 12, 2005
Grant Date -
Jul 22, 2004
app pub date -
Jan 21, 2003
filing date -
Jan 21, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods of drilling and completing open hole well bores and methods of removing filter cake comprised of a gelling agent and calcium carbonate are provided. A method of the invention for removing filter cake comprised of a gelling agent and calcium carbonate from the walls of an open hole well bore is basically comprised of the steps of contacting the filter cake with a delayed clean-up solution comprised of water and a formate ester and removing the clean-up solution from the well bore.
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