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Risk assessment and remediation suggestion of impacted soil by produced water associated with oil production

Authors
  • Abdol Hamid, Hashim R.1, 2
  • Kassim, Walid M. S.3
  • El Hishir, Abdulah2
  • El-Jawashi, Salem A. S.2
  • 1 International Technological University, London, UK , London (United Kingdom)
  • 2 Libyan Petroleum Institute, Tripoli, Libya , Tripoli (Libya)
  • 3 Al Fateh University, Tripoli, Libya , Tripoli (Libya)
Type
Published Article
Journal
Environmental Monitoring and Assessment
Publisher
Springer-Verlag
Publication Date
Dec 20, 2007
Volume
145
Issue
1-3
Pages
95–102
Identifiers
DOI: 10.1007/s10661-007-0018-3
Source
Springer Nature
Keywords
License
Yellow

Abstract

Produced water is water trapped in underground formations that is brought to the surface along with oil or gas production. Oilfield impacted soil is the most common environmental problem associated with oil production. The produced water associated with oil-production contaminates the soil and causes the outright death of plants, and the subsequent erosion of topsoil. Also, impacted soil serves to contaminate surface waters and shallow aquifers. This paper is intended to provide an approach for full characterization of contaminated soil by produced water, by means of analysis of both the produced water and the impacted soil using several recommended analytical techniques and then identify and assay the main constituents that cause contamination of the soil. Gialo-59 oilfield (29N, 21E), Libya, has been chosen as the case study of this work. The field has a long history of petroleum production since 1959, where about 300,000 bbl of produced water be discharged into open pit. Test samples of contaminated soil were collected from one of the disposal pits. Samples of produced water were collected from different points throughout the oil production process, and the analyses were carried out at the labs of Libyan Petroleum Institute, Tripoli, Libya. The results are compared with the local environmental limiting constituents in order to prepare for a plan of soil remediation. The results showed that the main constituents (pollutants) that impact the soil are salts and hydrocarbon compounds. Accordingly; an action of soil remediation has been proposed to remove the salts and degradation of hydrocarbons.

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