Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Reexamination Certificate
2003-09-17
2010-11-09
Figueroa, John J (Department: 1796)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
C507S110000, C507S117000, C507S129000, C507S131000, C507S138000, C175S066000, C175S072000
Reexamination Certificate
active
07829507
ABSTRACT:
The present invention relates to bridging agents for use in subterranean formations, to well drill-in and servicing fluids comprising such bridging agents, and to methods of using such bridging agents and well drill-in and servicing fluids in subterranean drilling operations. An example of a well drill-in and servicing fluid of the present invention comprises a viscosified fluid, a fluid loss control additive, and a bridging agent comprising a degradable material.
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Munoz, Jr. Trinidad
Todd Bradley L.
Figueroa John J
Halliburton Energy Service,s Inc.
McDermott Will & Emery LLP
Roddy Craig W.
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