Methods of drilling and completing well bores

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

2005-04-12

2005-04-12

Walker, Zakiya (Department: 3672)

Wells

Processes

Cleaning or unloading well

C166S300000, C175S070000

Reexamination Certificate

active

06877563

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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