Preventative Losses

Products

Mud Weights

Comments

 

7.0 to 12.0

12.1 to 14.5

14.6 to 17.0

17.1+

Pump sweeps while drilling depleted sands every 30' then periodically to T.D.

Premium Seal Fine

15

15

12

8

Premium Seal Coarse

0

0

0

0

Turbo Phalt*

0

0

0

0

Total ppb

15

15

12

8

Premium Seal Fine can also be added to the entire mud system at 4-6 ppb to pre-treat differential sticking and/or mud loss.

 

 

Seepage Losses
(15% or Less of Pump Output)

Products

Mud Weights

Comments

 

7.0 to 12.0

12.1 to 14.5

14.6 to 17.0

17.1+

Pump sweeps while drilling depleted sands every 30' then periodically to T.D.

Premium Seal Fine

10

10

10

8

Premium Seal Coarse

5

3

0

0

Turbo Phalt*

5

5

5

5

Total ppb

20

18

15

13

 

MICRON SIZES

HYDROSTATIC PRESSURE

Kill Mud Weight, ppg

Clay and Bentonite

less than 1

CONSTANTS:
PPG X FT X .052 = PSI
SG X FT X .433 = PSI

= (SIDPP, psi ÷ .052 ÷ TVD, ft) + Mud Wt, ppg

Barite

2 - 60

PRESSURE, psi = Mud Weight X .052 X Depth, ft (TVD)

 

Silt

 2 - 74

EQUIVILANT MW = Pressure, psi ÷ Depth, ft ÷ .052

 

Talcum Powder

5 - 50

 

 

Kitchen Flour

1 - 80

 

 

API Sand

greater than 74

 

 

Human Hair

˜ 100

 

 

Premium Seal Fine

2 - 200

 

 

Premium Seal Coarse

1- 4000

 

 

Turbo Phalt

less than 1 - 350

 

 

 

 

Partial Losses
(16% to 50% of Pump Output)

Products

Mud Weights

Comments

 

7.0 to 12.0

12.1 to 14.5

14.6 to 17.0

17.1+

Pump sweeps as needed then every 100’ of new hole or every 2-4 hours.

Premium Seal Fine

10

10

10

10

Premium Seal Coarse

10

8

5

0

Turbo Phalt*

10

10

10

5

Total ppb

30

28

25

15

 

 

Total Loss of Returns

Products

Mud Weights

Comments

 

7.0 to 12.0

12.1 to 14.5

14.6 to 17.0

17.1+

Spot across loss zone.  Allow hole to heal 6 hours. Stage to bottom and break circulation on bottom with another pill..

Premium Seal Fine

15

15

10

10

Premium Seal Coarse

25

20

15

10

Turbo Phalt*

10

10

10

5

Total ppb

50

45

35

25

Note:
1. Sweep volume and product concentration should vary with hole size.

 

MARSH FUNNEL

NORMAL FORMATION PRESSURE

FRESH WATER GRADIENT

OVERBURDEN GRADIENT

Time for fresh water to drain
= 26 secs ± ½ second per quart

465 psi/ft or 8.94 ppg

433 psi/ft

 1.0 psi/ft