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Seal
BRIDGING AGENT

INTRODUCTION: SEAL is a blend of sized calcium carbonate particles selected to most effectively plug a wide range of pore openings with a minimum of penetration. It may be used in any type of fluid to provide bridging material for an effective seal for lost circulation.

SUGGESTED APPLICATIONS: SEAL is designed primarily to control excessive loss of fluid. Some typical applications of SEAL are:

•  Treat excessive loss of fluid in a CARB system by adding a few sacks of SEAL at the pump suction. If this controls the loss, add 10 to 20 ppb of SEAL to the system and continue. If the loss is not cured by treating at the suction, then prepare a lost circulation pill.

Mix 50ppb of SLURRY and 30 to 50 ppb of SEAL in sufficient water to cover the loss zone. Generally, a 10 barrel pill is a minimum for this type of lost circulation. Refer to the SLURRY data sheet for additional mixing instructions.

•  Producing formations may be protected from damage (caused by loss of fluids) by spotting a slurry across the zone before beginning workover operations. This procedure also allows the use of conventional fluids above the protected zone. If circulation past the zone is required, a CARB system should be used.

•  SEAL may be added to any drilling mud system for control or prevention of lost circulation. Laboratory and field evaluation have proven SEAL superior to mica or ground nut shells.

MIXING PROCEDURE: SEAL is easily mixed in any type of fluid. It should be added through a hopper to ensure even distribution.

PACKAGING: SEAL is packaged in 50 lb. multi-wall sacks.