Application of a scale inhibitor squeeze model to improve field squeeze treatment design
Conference
·
OSTI ID:382618
- Heriot-Watt Univ., Edinburgh (United Kingdom)
The most common remedy which is applied to solve mineral scaling problems in water producing North Sea fields is the scale inhibitor squeeze process. The central objective of this treatment is to maintain a sufficiently high level (typically, 2--50 ppm) of inhibitor in the produced water to prevent scale formation. The process is often applied in an empirical way although a body of knowledge now exists which allows one to design this process in a more rational engineering manner. This paper presents the results from an experimental and modelling study which aimed to improve downhole scale inhibitor squeeze treatment design by extending the squeeze lifetime in the Alwyn North field. The model used in this work is a radial single well model for describing scale inhibitor squeeze processes in the near-well formation. In order to carry out the optimization of the squeeze design, scale inhibitor laboratory core floods were carried out at reservoir conditions in order to derive inhibitor dynamic adsorption isotherms. The model then used the isotherms to perform the prediction of the lifetimes of the multiple scale inhibitor squeeze treatments and to optimize the squeeze operational design. The improved design was then implemented in the Alwyn North field and extended squeeze lifetimes have been achieved in broad agreement with predictions.
- OSTI ID:
- 382618
- Report Number(s):
- CONF-9410272--
- Country of Publication:
- United States
- Language:
- English
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