Land Magnetic Investigation on the West Qarun Oil Field, Western Desert-Egypt

Khashaba, A.; Mekkawi, Mahmoud; Ghamry, Essam; E, Abdel Aal

doi:10.4172/2381-8719.1000272

Cited by 1 publication

(2 citation statements)

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“…Several studies have established that drilling wells through faults or cracks increase borehole yield [14][15][16]. [17] notes that the magnetic technique is the fast and most affordable method for mapping the weathered/fractured basement and investigating surface-to-subsurface geological formations. Numerous authors have successfully applied the magnetic technique to map the subsurface features [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…[17] notes that the magnetic technique is the fast and most affordable method for mapping the weathered/fractured basement and investigating surface-to-subsurface geological formations. Numerous authors have successfully applied the magnetic technique to map the subsurface features [17][18][19]. Electromagnetic, electrical resistivity, or seismic surveys are usually conducted after a magnetic survey to obtain accurate subsurface information.…”

Section: Introductionmentioning

confidence: 99%

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Hydrological Evaluation of the Groundwater Potential in the Fractured Karoo Aquifer Using Magnetic and Electrical Resistivity Methods: Case Study of the Balfour Formation, Alice, South Africa

Adesola,

Gwavava,

Liu

2023

International Journal of Geophysics

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The study is aimed at evaluating the groundwater accumulations present in Alice using magnetic and electrical resistivity measurements to examine the trends of structural elements and characterize the groundwater resource for borehole drilling. The magnetic maps show a low magnetic linear structure moving northwest to southeast direction, which may be caused by fractures. The linear high intensities were probably caused by dolerite dykes, while dolerite sills caused broader high-intensity areas. The depth slices show that the near-surface magnetic structures are visible to a depth of about 19 m, and the deep-seated structures are found at a depth of about 31 m, possibly deeper. Twenty-five vertical electrical soundings (VES) of the Schlumberger array were measured with AB/2 varying between 1.5 m and 250 m across the study area. The VES interpretation showed four geoelectric layers composed of HK and HA curve types. The geoelectric layer’s thicknesses are (1) topsoil from 0.4 to 1.8 m, (2) weathered layer from 0.8 to 17.5 m, and (3) weathered/fractured layer from 9.9 to 143.9 m; the third layer could be the productive water-bearing zones, and (4) bedrock layer has an infinite thickness. The layers have resistivity values of 20-5752 Ωm, 3-51 Ωm, 136-352 Ωm, and 44-60428 Ωm, respectively. A correlation of the VES with the borehole log indicated a well-matched result. The magnetic and electrical resistivity surveys provided a detailed subsurface structure and helped identify possible fractures that could act as a passage for groundwater.

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