Wellbore fluid comprising a base fluid and a particulate...

Details Wellbore fluid comprising a base fluid and a particulate... Wellbore fluid comprising a base fluid and a particulate...

2007-01-10

2010-12-21

Suchfield, George (Department: 3676)

Boring or penetrating the earth

Processes

Boring with specific fluid

C166S292000, C166S294000, C166S300000, C175S065000, C507S130000, C507S140000, C507S142000, C507S243000, C507S269000, C507S274000

Reexamination Certificate

active

07854277

ABSTRACT:
Wellbore fluid containing a base fluid and a particulate bridging agent comprised of melamine. A method is also described of forming a removable filter cake on the walls of a wellbore that penetrates a porous and permeable rock formation by placing in the wellbore a wellbore fluid containing a base fluid and melamine, and permitting the melamine to deposit from the wellbore fluid onto or into the walls of the wellbore to form the filter cake, whereby fluid loss to the formation through the removable filter cake is reduced.

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International Search Report for PCT/GB2007/000055 mailed.
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