FM25/FM25X Operator’s Manual Drilling Fluid Concepts - 43
Mixtures
Basic Fluid Recipes
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
sand, gravel, clay or
shale
35 - 40 lb (16-18 kg) Bore-Gel
.5 pt (235 mL) EZ-Mud
.5 gal (2 L) Con-Det
Vary mixture according to percentage of
sand and clay
clay .5 lb (225 g) Poly Bore
.5 gal (2 L) Con-Det
Flow rate should be 3-5 parts fluid to 1
part soil. May use .25 - .5 gal (1-2 L) of
Penetrol instead of Con-Det
swelling/sticky clay .75 - 1 lb (340-450 g) Poly Bore
.5 - 1 gal (2-4 L) Con-Det
Flow rate should be 3-5 parts fluid to 1
part soil. May use .25 - .5 gal (1-2 L) of
Penetrol instead of Con-Det
solid rock (shale) 40 lb (18 kg) Bore-Gel Use .5 pt (235 mL) of No Sag for large
diameter or longer bores
solid rock (other than
shale)
40 - 50 lb (18-23 kg) Bore-Gel Use .5 pt (235 mL) of EZ-Mud in reactive
shales
rock/clay mixture 40 - 50 lb (18-23 kg) Bore-Gel
.5 pt (235 mL) EZ-Mud
rock/sand mixture 40 - 50 lb (18-23 kg) Bore-Gel Use .5 pt (235 mL) of No Sag for large
diameter or longer bores
fractured rock 50 lb (23 kg) Bore-Gel
.5 - 1lb (225-450 g) No-Sag
Use .5 lb (225 g) of Barolift to reduce fluid
loss to formation
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