Wells – Processes – Graveling or filter forming
Reexamination Certificate
2006-11-14
2006-11-14
Suchfield, George (Department: 3676)
Wells
Processes
Graveling or filter forming
C166S300000, C166S304000, C166S312000, C166S381000, C166S386000, C175S064000, C175S065000, C175S072000, C507S131000, C507S241000, C507S267000, C507S269000, C507S277000, C507S910000, C507S929000
Reexamination Certificate
active
07134496
ABSTRACT:
Single phase microemulsions improve the removal of filter cakes formed during drilling with invert emulsions. The single phase microemulsion removes oil and solids from the deposited filter cake. Optionally, an acid capable of solubilizing the filter cake bridging particles may also be used with the microemulsion. In one non-limiting embodiment the acid may be a polyamino carboxylic acid. Skin damage removal from internal and external filter cake deposition can be reduced.
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Clark David E.
Ewen Bruce Rae
Jones Thomas A.
Quintero Lirio
Baker Hughes Incorporated
Madan, Mossanan & Sriram P.C.
Suchfield George
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