Methods of drilling and completing well bores

Details Methods of drilling and completing well bores Methods of drilling and completing well bores

E - Fixed Constructions

21

B

E21B 21/14 (2006.01) C09K 8/08 (2006.01) C09K 8/52 (2006.01) C09K 8/86 (2006.01) E21B 7/18 (2006.01)

Patent

CA 2453648

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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