Laboratory Study Of Calcium Sulfate Solubility Calculation By Using Skillman, Mcdonald, And Stiff Method

Darwita Darwita

Abstract


Calcium sulfate scale is one of serious problems and must be solved accurately in petroleum industry. It can plug pore media consequently decreases production rate. Therefore, it is very important to know injection water quality of S1, S2, S3 water samples by means of calculating CaSO4 solubility. Each injection water sample has different CaSO4  solubility. The CaSO4 solubility of S3 produced water is usually higher than S2 and S1 solubility. Because it contains the highest calcium and sulfate ion concentrations compared with S2 and S1. No CaSO4 scale is found in all analyzed water sample.


Keywords


Calcium sulfate solubility, water, method, water analysis, calculation

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References


Patton,C.C.: “Oilfield Water System“, Campbell

Petroleum Series, 1977.

Jack, C.C. and Donald.J.W.: “Water Formed

Scale Deposits”, Gulf Publishing Company, Book

Division, Texas, 1976.

Johnson, K.S.: “Water Scaling Problem in the Oil

Production Industry“, Chemicals in Oil Industry,

, p.140 - 151.

Ostroff, A.G.: “Introduction to Oilfield Water Technology”,

nd edition National Association of Corrosion

Engineers, Houston, Texas, 1979, p.69 –

American Petroleum Institute Recommended

Practice (API – RP 45).

Bragg, S.L.: “ Crystal Structure of Minerals”, G.

Bell and Sons, Ltd, 1965, p.40.

Patton, C.C.: “Applied Water Technology “,

Campbell Petroleum Services, Oklahoma, USA,

, p.74.

Nancollas, G.H.: “ Oilfield Scale -Physical Chemical

Studies of its Formation and Prevention”, Symp.

On Chemicals in the Oil Industry “, 26-27 March

, p. 143 – 164.

Case, L.C.: “ Water Problems in Oil Production “,

edition, Tulsa, Oklahoma, 1977.




DOI: https://doi.org/10.29017/SCOG.33.1.811

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