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Implications on oil trapping in the Kifl field of Iraq through geophysical investigations | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 10، دوره 56، شماره 4، اسفند 2022، صفحه 391-400 اصل مقاله (1.57 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2022.342321.594971 | ||
| نویسندگان | ||
| Mohanad AL-Farhan1، 2؛ Behrooz Oskooi* 1؛ Maysam Abedi3؛ Vahid Ebrahim Zadeh Ardestani1؛ Amar AL-Khalidy4 | ||
| 1Institute of Geophysics, University of Tehran, Tehran, Iran. | ||
| 2Directorate of Education of Basra, Ministry of Education, Basra, Iraq. | ||
| 3School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran. | ||
| 4Department of Applied Geology, College of Sciences, University Babylon, Babylon Iraq. | ||
| چکیده | ||
| Potential field geophysical measurements were conducted in the west of Kifl region in central Iraq to image a plausible oil-trapping reservoir. Ground-based magnetometry and gravimetry surveys were conducted to investigate this region by covering an area of 16 24 km by designing a regular grid spacing of 250 m. After preprocessing potential field data, different filters were utilized to separate the residuals from the regional anomalies. The complicated tectonic setting of the studied area was imaged by recognition of the fault system through simulation of the magnetic and gravity anomalies, which facilitates the configuration display of the oil-trapping mechanism. The geometry of a fault system was derived from parametric inversion of gravity data. The magnetic anomalies were extended with the trends of NS, NW, and NE and reached a maximum value of 55 nT. However, the gravity anomalies appeared with the same extensions and values ranging from -3.3 to 1.5 mGal. The intense magnetic susceptibility amount of the reservoir rocks is arising from chemical processes and iron-oxide ion replacements, accompanied by the migration and accumulation of hydrocarbon. Incorporating the results from the Euler’s depth estimation, parametric data modeling along with logging data assisted simultaneous modeling of the magnetic and gravity data. The 2D geological model of the subsurface layers at the Kifl area presents a graben-horst fault system within a thick sequence of sediment. Geological characteristics extracted from geophysical data modeling provided insightful information on the nature and essence of the hydrocarbon reservoirs in the Kifl area. It has formed through tectonic deformation and tension over the Arabian plate during the Permian – Paleocene cycle. Hence, it can be concluded that the aforementioned fault system has divided the hydrocarbon reservoirs. | ||
| کلیدواژهها | ||
| Magnetic؛ Gravity؛ Inversion؛ Kifl area؛ Oil trapping | ||
| مراجع | ||
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