omposite plugging agent (plugging while drilling) is made from nature polymer based composite, it can be used well in drilling. Because it swells when meets with water, so it has the capacity of plugging, it also has strong adhesive ability, co***red with traditional plugging agent, it can be used more expediently, it can combined with all mud system to plug the thief zone and protect low-pressure production zone (oil, nature gas, water, etc.).
Physicochemical Properties:
Appearance: offwhite powder
Water content: <14%
PH: 7-9
Mud Properties:
Subject
Mud Mud +4%samples
Density, g/m3
1.03 ¡Ü1.03
Surface viscosity, ***.s 7-10 ¡Ü11
Plastic viscosity, ***.s
6-9 ¡Ü10
API water loss, ml
15-17 ¡Ü10
Closure filtration,ml/30min
All lost ¡Ü 50
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