1£®Characteristics
It is a kind of greyish yellow powder made of many kinds of natural fiber£¬filling particles and additives at the appropriate proportion,if you add this products when drilling,with the effect of uniaxial pressure,it has good efficacity of forming sealing,it can be used expediently, good co***tibility, and it doesn't i***ct the capability of the mud
2£®main performance index
subjects indicators
appearance Yellowy or yellow powder
density£¬g/cm3 1.40-1.60
moisture£¬% ¡Ü8.0
ignition residue£¬% ¡Ü7.0
Hydrotrope ¡Ü5%
Closure filtration£¬ml ¡Ü35.0
PH 7---8
Density variance£¬g/cm3 ¡Ü0.02
Mud Properties:
Subject Mud Mud +4%samples
Density, g/m3 1.01-1.03 1.02-1.05
Surface viscosity, ***.s 7-8 8-12
Plastic viscosity, ***.s 5-6 4-7
filtration, ml 18-21 ¡Ü10
Closure filtration,ml/30min All lost ¡Ü40(30min)
PH 9-11 9-11
3. Application
Unidirectional pressure sealant for drilling fluid is suitable for all conditions of micro-fracture and stratum leakage filtrarion. This products have good co***tibility, can be used with all drilling fluid and competition fluid of different |
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