Salt (ppb)
Solids: (ppb) Barite and (ppb) LGS
Corrected % Solids
Changing the
NAF/WATER RatioINVERT EMULSION CALCULATED DATA
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CALCULATIONS FOR NAF BASE MUDS
Содержание
- 1. CALCULATIONS FOR NAF BASE MUDS
- 2. Calculating the NAF / Water RatioLime, (ppb)%
- 3. NAF / WATER RATIOCalculated from retort data
- 4. Retort: %NAF = 63, %water = 27,
- 5. EXCESS LIME, ppb Vsa, or Psm or Pom = ml of 0.1N H2SO4
- 6. EXCESS LIME, ppb (Example)
- 7. Calculations: % by Wt. CaCl2 CaCl2 %
- 8. Calculate Weight Percent Calcium ChlorideRetort: Oil% =
- 9. Calculations: ppb CaCl2ppb CaCl2 =
- 10. CALCULATED CALCIUM CHLORIDE, ppb Retort: Oil%
- 11. There Are Times When It Is Desirable
- 12. There Are Times When It Is Desirable
- 13. Calculate NAF / Water RatioRetort: %NAF =
- 14. 1. BBL H2O / BBL MUD =
- 15. Calculate NAF / Water RatioRetort: %NAF =
- 16. 1. BBL H2O / BBL MUD =
- 17. Wetting Agent to add when adding Barite:
- 18. Скачать презентанцию
Calculating the NAF / Water RatioLime, (ppb)% CaCl2 Calcium Chloride Salt (ppb)Solids: (ppb) Barite and (ppb) LGSCorrected % SolidsChanging the NAF/WATER RatioINVERT EMULSION CALCULATED DATA
Слайды и текст этой презентации
Слайд 2Calculating the NAF / Water Ratio
Lime, (ppb)
% CaCl2
Calcium Chloride
Salt (ppb)
NAF/WATER Ratio
Слайд 3NAF / WATER RATIO
Calculated from retort data alone.
Percent NAF
Percent water
The
NAF / water is based on the liquid phase of
the mud.The NAF / water is the ratio of the percentage of the liquid phase of the mud that is NAF to the percentage of the liquid phase that is water.
Слайд 4Retort: %NAF = 63, %water = 27, %solids = 10
NAF
% of liquid phase = 63/(63 + 27) = 70
Water
% of liquid phase = 27/(63 + 27) = 30Check: 70% + 30%= 100%
Ratio = 70:30
Retort: %NAF = 42, %water = 18, %solids = 40
NAF % of liquid phase = 42/(42 + 18) = 70
Water % of liquid phase = 18/(42 + 18) = 30
Check: 70% + 30%= 100%
Ratio = 70:30
Note: Even though the NAF / water ratio is changed as the mud weight changes, the percent solids has no effect on the actual NAF / water calculation.
Calculate... NAF / Water Ratio
Слайд 7Calculations: % by Wt. CaCl2
CaCl2 % by Wt. =
WHERE: (ml AgNO3 1ml Mud) =
Cl- from report divided by 10,000
Слайд 8Calculate Weight Percent Calcium Chloride
Retort: Oil% = 42, Water% =
18, Solids% = 40
The titration with 0.282N AgNO3 = 7.7
ml AgNO3 / 2ml mud
Слайд 10CALCULATED CALCIUM CHLORIDE, ppb
Retort: Oil% = 42, Water%
= 18, Solids% = 40
The titration with 0.282N
AgNO3 = 7.7 ml AgNO3 / 2ml mud
Слайд 11There Are Times When It Is Desirable To Change The
NAF / Water ratio.
It may be desirable to INCREASE the
NAF / Water ratio when:A saltwater flow has lowered the ratio.
The mud weight is being raised significantly.
The percent solids and/or rheology is too high.
It may be desirable to LOWER the NAF / Water ratio when:
The weight of a mud is being lowered at a liquid mud plant.
Higher rheology is needed.
The ratio has changed from evaporation on a high temperature well.
NAF must be added to raise or increase the NAF / Water ratio.
Water must be added to lower or decrease the NAF / Water ratio.
To go from 70:30 to 80:20, add NAF.
To go from 70:30 to 60:40, add Water.
Changing the NAF / Water Ratio
Слайд 12There Are Times When It Is Desirable To Change The
NAF / Water ratio.
It may be desirable to INCREASE the
NAF / Water ratio when:A saltwater flow has lowered the ratio.
The mud weight is being raised significantly.
The percent solids and/or rheology is too high.
It may be desirable to LOWER the NAF / Water ratio when:
The weight of a mud is being lowered at a liquid mud plant.
Higher rheology is needed.
The ratio has changed from evaporation on a high temperature well.
NAF must be added to raise or increase the NAF / Water ratio.
Water must be added to lower or decrease the NAF / Water ratio.
To go from 70:30 to 80:20, add NAF.
To go from 70:30 to 60:40, add Water.
Changing the NAF / Water Ratio
Слайд 13Calculate NAF / Water Ratio
Retort: %NAF = 63, %Water =
27, %Solids = 10
NAF % of liquid phase = 63/(63
+ 27) = 70Water % of liquid phase = 27/(63 + 27) = 30
Check: 70% + 30%= 100%
Ratio = 70:30
Decrease the NAF / Water ratio to 60:40
Слайд 14
1. BBL H2O / BBL MUD =
2. BBL NAF /
BBL MUD =
WHERE:
NAFRd =
NAF RATIO DESIRED ( Whole number )WRd = WATER RATIO DESIRED ( Whole number )
% NAF = % NAF From retort (Whole Number)
% H2O = % H2O From retort (Whole Number)
Calculations:
Changing the NAF / Water ratio
Слайд 15Calculate NAF / Water Ratio
Retort: %NAF = 63, %Water =
27, %Solids = 10
NAF % of liquid phase = 63/(63
+ 27) = 70Water % of liquid phase = 27/(63 + 27) = 30
Check: 70% + 30%= 100%
Ratio = 70:30
Increase the NAF / Water ratio to 80:20
Слайд 16
1. BBL H2O / BBL MUD =
2. BBL NAF /
BBL MUD =
WHERE:
NAFRd =
NAF RATIO DESIRED ( Whole number )WRd = WATER RATIO DESIRED ( Whole number )
% NAF = % NAF From retort (Whole Number)
% H2O = % H2O From retort (Whole Number)
Calculations:
Changing the NAF / Water ratio
Слайд 17Wetting Agent to add when adding Barite:
One quarter (0.25)
to one half pound (.5) of wetting agent for every
sack (100#) of barite added to the system.Emulsifier to add when emulsifying Water:
(Pounds) = [(bbls brine)* x (8±)]
*(bbls brine / bbl mud) =
[bbl water / bbl mud] [Water fraction (bbl) ]
(from equation #1) (Table 2 pg. 11.32)
(25% CaCl2 = 0.922)
Lime to add: pound for pound with Mul, Mod and MI-157
INVERT EMULSION TREATMENTS:
