Systematic Evaluation of Asphaltene Instability and Control During Production of Live Oils: A Flow Assurance Study

摘要

In this study, the propensities of reservoir fluids sampled from South America to precipitate asphaltenes under realistic production conditions of pressure, temperature and/or composition (e.g. lift gas operation and chemical treatment) were evaluated. Novel techniques, namely a laser-based solids detection system (SDS) and a high pressure microscopy (HPM) coupled with in-house imaging software package for particle size analyses, have been simultaneously used to measure and compare the incipient conditions for asphaltene precipitation from lives oils as well as their associated morphological and size distribution changes. The combination of qualitative information such as particle morphology and quantitative data such as particle size distribution was particularly very valuable in evaluating the effectiveness of Asphaltene Inhibitors (AI).