Abdol Hamid Hashim R, Kassim Walid M S, El Hishir Abdulah, El-Jawashi Salem A S
International Technological University, London, UK.
Environ Monit Assess. 2008 Oct;145(1-3):95-102. doi: 10.1007/s10661-007-0018-3. Epub 2007 Dec 20.
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.
采出水是被困在地下地层中、随石油或天然气开采被带到地表的水。油田受影响土壤是与石油生产相关的最常见环境问题。与石油生产相关的采出水会污染土壤，导致植物直接死亡，进而造成表层土侵蚀。此外，受影响的土壤还会污染地表水和浅层含水层。本文旨在提供一种方法，通过使用几种推荐的分析技术对采出水和受影响土壤进行分析，全面表征采出水污染的土壤，然后识别和测定导致土壤污染的主要成分。利比亚的贾洛 - 59油田（北纬29度，东经21度）被选为这项工作的案例研究对象。自1959年以来，该油田有着悠久的石油生产历史，约30万桶采出水被排放到露天矿坑中。从其中一个处置坑采集了受污染土壤的测试样本。在石油生产过程的不同点采集了采出水样本，并在利比亚的黎波里的利比亚石油研究所实验室进行了分析。将结果与当地环境限制成分进行比较，以便制定土壤修复计划。结果表明，影响土壤的主要成分（污染物）是盐类和碳氢化合物。因此，已提出采取土壤修复行动来去除盐分并降解碳氢化合物。
