Isothermal Titration Calorimetry: A New Tool for the Development of Structure Activity Relationships for Sulphide Scale Control

Ackermann, L. -M. (Max Planck Institute for Polymer Research) | Klapper, M. (Max Planck Institute for Polymer Research) | Kayser, C. (Clariant) | Kaiser, A. (Clariant)

OnePetro 

Abstract

Smart scale management techniques are of great demand in nowadays oil and gas industry. The formation of zinc, iron and lead sulphide scales can cause severe damages of production equipment which ultimately results in loss of productivity.1-4 Currently used materials act inefficient, as high amounts of materials are needed, which makes research in this field demanding.5 However, to develop anti-scaling agents, a deeper understanding of the molecular interactions of the typically used polymers is required. To understand the occurring interactions, isothermal titration calorimetry (ITC) is introduced as a new method, which allows for a more rational design of a new material and makes screenings, as the have been done in the past, unnecessary. With the use of ITC it was proven, that several sulfonic acid, phosphonic acid and carboxylic acid carrying monomers are suitable candidates showing strong interaction with the zinc sulfide surface, which is one of the exotic problems in scale formation.6 Furthermore, the influence of the molecular weight and the composition was identified during the investigations of the different homopolymers and copolymers of the previously tested monomers.