Lost circulation material for oilfield use

Details Lost circulation material for oilfield use Lost circulation material for oilfield use

2011-04-12

2011-04-12

Kugel, Timothy J. (Department: 1763)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S269000, C166S292000

Reexamination Certificate

active

07923413

ABSTRACT:
A composition for reducing lost circulation in a well, while drilling the well with a drilling mud, which is composed of a base fluid, a mixture of particles, and a blend of fibers. The composition is used by stopping drilling with the mud, injecting a spacer, injecting the water-based composition, injecting a spacer, and resuming drilling with the oil-based mud.

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