Well completion spacer fluids containing fibers and methods

Details Well completion spacer fluids containing fibers and methods Well completion spacer fluids containing fibers and methods

2006-12-05

2006-12-05

Suchfield, George (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C166S309000, C166S312000, C507S202000, C507S219000, C507S221000, C507S928000

Reexamination Certificate

active

07143827

ABSTRACT:
Well completion spacer fluids containing fibers and methods of using the spacer fluids are provided. A method of the invention for displacing a first fluid from a well bore with an incompatible second fluid comprises the following steps. A spacer fluid is placed between the first and second fluids to separate the first and second fluids and to remove the first fluid from the walls of the well bore. Thereafter, the first fluid and the spacer fluid are displaced from the well bore with the second fluid. The spacer fluid comprises water, a weighting material, a dispersing agent, a suspending agent and friction reducer and fibers. The spacer fluid containing the components mentioned above is preferably also foamed.

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