Lost Circulation

Lost circulation is reported as one of the most costly problems during drilling/cementing operations. Costs range from several thousand dollars for moderate fluid loss to tens of thousands of dollars for sidetracks or relief wells resulting from severe losses. If remediation solutions are ineffective, significant financial setbacks occur due to bypassed reserves or even cancelation of development projects. Conventional solutions range from adjusting fluid rheology and pump rates to adding particulate materials of various shapes and sizes to wellbore fluids, and many treatments have been designed on a trial-and-error basis. Halliburton offers a variety of lost circulation material and fluid-based treatments to overcome losses from minor to moderate to severe, including total losses.

Flocele™ Lost-Circulation Cement Additive
Cellophane flakes available in two sizes with the 3/8' size used most often to overcome lost circulation.
Gilsonite™ Lost-Circulation Additive
An asphaltene ranging from 4 to 100 mesh size used to control lost circulation and reduces slurry weight.
Kol-Seal™ Lost-Circulation Additive
Ground coal used to control lost circulation.
Perlite
Crushed volcanic rock expanded by heat to produce a lightweight cellular material useful in controlling lost circulation.
PhenoSeal™ Lost Circulation Material
Can reduce the fluid loss of cement slurries.
Pol-E-Flake Lost Circulation Additive
An inert lost circulation product consisting of polyester film sized to 3/8'.
Tuf Additive No.2™ Lost Circulation Additive
A fibrous material which can be added to cement slurries to prevent lost circulation and imparts shatter resistance to a set cement to help mitigate fracture damage when perforating.
Tuf Fiber™ 594 Lost Circulation Additive
Hydrophilic fiber designed for dispersibility and obtaining the mechanical properties not typical with conventional fibers.

Lost Circulation

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