Presenters
T.R. Gardner, Bill Brogdon & Reginald Lasater; Halliburton Services
Deposition of gypsum is the source of some of the most severe production and water injection problems in certain areas. Considerable progress has been made recently in the field of gyp (CaSO4 * 2H2O) removal and prevention in oilfield applications. This paper shows the results of a comprehensive laboratory and field evaluation of various types of scale removal methods which may be classified as: 1) converters, 2) disintegrators and 3) solvents. Also, a laboratory comparison of the various types of liquid scale inhibitors and a discussion of various placement techniques for field application is included.