PCA: uma ferramenta para identificação de traçadores químicos para água de formação e água de injeção associadas à produção de petróleo

• Main Authors: Fabiana Alves de Lima Ribeiro, Guilherme Alvarenga Mantovani, Ronei Jesus Poppi, Francisca Ferreira do Rosário, Maria Carmen Moreira Bezerra, Andre Luis Mathias Bastos, Vera Lúcia Alves de Melo
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2013-01-01
• Series: Química Nova
• Subjects: produced water; PCA; exploratory analysis
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900002&lng=en&tlng=en

This study describes the use of Principal Component Analysis to evaluate the chemical composition of water produced from eight oil wells in three different production areas. A total of 609 samples of produced water, and a reference sample of seawater, were characterized according to their levels of salinity, calcium, magnesium, strontium, barium and sulphate (mg L-1) contents, and analyzed by using PCA with autoscaled data. The method allowed the identification of variables salinity, calcium and strontium as tracers for formation water, and variables magnesium and sulphate as tracers for seawater.