SATURATION INDEX PREDICTS BRINE'S SCALE-FORMING TENDENCY.

Leo A. Rogers, Mason B. Tomson, Jane M. Matty, Larry R. Durrett

Research output: Contribution to specialist publicationArticle

5 Scopus citations

Abstract

When natural gas or oil wells produce large volumes of brine/water along with the hydrocarbon, precipitation of calcium carbonate (scale) may be a problem. When brine is produced, the pressure and temperature are lowered, carbon dioxide comes out of solution, and the shift in conditions causes calcium carbonate to precipitate as scale on the inside surfaces of tubulars and processing equipment. This article presents a series of nomographs which can be used to predict the scale-forming tendency, based on the results of relatively simple field chemical tests that can be made by the well operator. The nomographs are based upon rigorous chemical theory, but remove the need for a complex computer program. Further, the scale-forming tendency for each independent parameter is individually given such that the most significant parameters can be readily identified. The results provide the operator with a quantitative measure for the scale-forming tendency which can be used to design or operate the scale control system.

Original languageEnglish
Pages97-100, 104
Volume83
No13
Specialist publicationOil and Gas Journal
StatePublished - Apr 1 1985

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