Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County
Oilfield drilling sites are the potential dispersive pollution source of groundwater, especially to shallow groundwater. The pollution risk assessment in these areas is an important reference for effective groundwater management and protection. The vulnerability assessment alone is not sufficient fo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/4/628 |
| _version_ | 1797475912636170240 |
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| author | Zhang Fang Zhiguo Liu Siyuan Zhao Yanlin Ma Xia Li Han Gao |
| author_facet | Zhang Fang Zhiguo Liu Siyuan Zhao Yanlin Ma Xia Li Han Gao |
| author_sort | Zhang Fang |
| collection | DOAJ |
| description | Oilfield drilling sites are the potential dispersive pollution source of groundwater, especially to shallow groundwater. The pollution risk assessment in these areas is an important reference for effective groundwater management and protection. The vulnerability assessment alone is not sufficient for groundwater contamination risk assessment. In this study, we developed a comprehensive groundwater pollution risk assessment method for oilfield drilling sites that combine groundwater vulnerability, pollution source hazard, and groundwater value function to produce a more comprehensive result. Consider the oilfield drilling area in Yitong County of Jilin Province, China, as an example. Thematic maps of the three aspects (groundwater vulnerability, pollution source hazard, and groundwater value function) were generated in ArcGIS environment to assess the contamination risk of groundwater in quaternary pore unconfined aquifer. The results show that 9.92% of the study area is characterized as being at high risk. These areas are mainly distributed around the center position of the oil drilling site, floodplains, and the reservoir. The moderate risk area accounts for 21.04% of the total area. It is distributed in the first-level terrace, mainly because of the high function value of groundwater. The remaining 69.04% of the study area is characterized as none and mild risk, mainly distributed in the valleys and terraces. This integrated groundwater contamination risk assessment method is suited for comparative assessment of multiple-point sources of contamination at a regional scale. Finally, the groundwater contamination risk grade distributed in this area provides a reference for effective protection and sustainable supply of groundwater in the oilfield drilling area. |
| first_indexed | 2024-03-09T20:50:35Z |
| format | Article |
| id | doaj.art-594aa4afd1774cb695160bfb1a126d8c |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:50:35Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-594aa4afd1774cb695160bfb1a126d8c2023-11-23T22:34:56ZengMDPI AGWater2073-44412022-02-0114462810.3390/w14040628Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong CountyZhang Fang0Zhiguo Liu1Siyuan Zhao2Yanlin Ma3Xia Li4Han Gao5Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, ChinaChina Institute of Water Resources and Hydropower Research, Beijing 100038, ChinaKey Laboratory of Groundwater Resources and Environment, Ministry of Education, Changchun 130021, ChinaOilfield drilling sites are the potential dispersive pollution source of groundwater, especially to shallow groundwater. The pollution risk assessment in these areas is an important reference for effective groundwater management and protection. The vulnerability assessment alone is not sufficient for groundwater contamination risk assessment. In this study, we developed a comprehensive groundwater pollution risk assessment method for oilfield drilling sites that combine groundwater vulnerability, pollution source hazard, and groundwater value function to produce a more comprehensive result. Consider the oilfield drilling area in Yitong County of Jilin Province, China, as an example. Thematic maps of the three aspects (groundwater vulnerability, pollution source hazard, and groundwater value function) were generated in ArcGIS environment to assess the contamination risk of groundwater in quaternary pore unconfined aquifer. The results show that 9.92% of the study area is characterized as being at high risk. These areas are mainly distributed around the center position of the oil drilling site, floodplains, and the reservoir. The moderate risk area accounts for 21.04% of the total area. It is distributed in the first-level terrace, mainly because of the high function value of groundwater. The remaining 69.04% of the study area is characterized as none and mild risk, mainly distributed in the valleys and terraces. This integrated groundwater contamination risk assessment method is suited for comparative assessment of multiple-point sources of contamination at a regional scale. Finally, the groundwater contamination risk grade distributed in this area provides a reference for effective protection and sustainable supply of groundwater in the oilfield drilling area.https://www.mdpi.com/2073-4441/14/4/628groundwater contamination riskvulnerability assessmentnumerical simulationrisk assessmentrisk classificationprincipal component analysis |
| spellingShingle | Zhang Fang Zhiguo Liu Siyuan Zhao Yanlin Ma Xia Li Han Gao Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County Water groundwater contamination risk vulnerability assessment numerical simulation risk assessment risk classification principal component analysis |
| title | Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County |
| title_full | Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County |
| title_fullStr | Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County |
| title_full_unstemmed | Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County |
| title_short | Assessment of Groundwater Contamination Risk in Oilfield Drilling Sites Based on Groundwater Vulnerability, Pollution Source Hazard, and Groundwater Value Function in Yitong County |
| title_sort | assessment of groundwater contamination risk in oilfield drilling sites based on groundwater vulnerability pollution source hazard and groundwater value function in yitong county |
| topic | groundwater contamination risk vulnerability assessment numerical simulation risk assessment risk classification principal component analysis |
| url | https://www.mdpi.com/2073-4441/14/4/628 |
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