Ditch-witch MR90 Manuel d'utilisateur télécharger pdf (Page 63)

Systems and Equipment - 62 MR90 Operator’s Manual

Recommended Products

CMW

Mixtures

General mixing order

1. Soda ash

2. Bentonite

3. Polymer

Bore-Gel

contains premixed bentonite, polymer, and soda ash. Follow guidelines below to ensure proper

drilling fluid viscosity for expected drilling conditions.

Basic Fluid Recipes

NOTICE: Bentonite does not mix well in water containing polymer. To use both, mix bentonite first, then

add polymer.

• If chemicals are added in the wrong order, they will not mix properly and will form clumps.

• If tank contains bentonite/polymer mix and more drilling fluid is needed, completely empty tank and

start with fresh water before mixing another batch.

Conditions Amount to Use

normal drilling 15 lb/100 gal 7 kg/380 L

sand or gravel up to 45 lb/100 gal up to 21 kg/380 L

rock up to 50 lb/100 gal up to 23 kg/380

Soil type Mixture/100 gal (378 L) of water Notes

fine sand 35 lb (16 kg) Bore-Gel

coarse sand 35 lb (16 kg) Bore-Gel

.5 lb (225 g) No-Sag

Add .5 lb (225 g) of Quik-Trol for

additional filtrate control

fine sand below water

table

40 lb (18 kg) Bore-Gel

.75 lb (340 g) Quik-Trol

Add .5 - 1 gal (2-4 L) of Dinomul in high

torque situations

coarse sand below

water table

40 lb (18 kg) Bore-Gel

.75 lb (340 g) Quik-Trol

.75 lb (340 g) No-Sag

Add .5 - 1 gal (2-4 L) of Dinomul in high

torque situations

gravel 50 lb (23 kg) Bore-Gel

.75 lb (340 g) Quik-Trol

.75 lb (340 g) No-Sag

Add .5 lb (225 g) of Barolift to reduce loss

of returns

cobble 50 lb (23 kg) Bore-Gel

.75 lb (340 g) Quik-Trol

.75 lb (340 g) No-Sag

Add .5 lb (225 g) of Barolift to reduce loss

of returns

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Ditch-witch MR90 Manuel d'utilisateur Page 63

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