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العنوان
Hydrocarbon exploration and tectonic evolution of belayim marine oil field, Gulf of Suez, Egypt /
المؤلف
Abu Al-Atta, Mohamed Abd Alla.
هيئة الاعداد
باحث / محمد عبدالله عبدالفتاح أبوالعطا
مشرف / غالب إبراهيم عيسى
مشرف / محمد عوض أحمد
مشرف / محمد مصطفى عفيفى
مناقش / محمد عبدالعزيز يونس
الموضوع
Petroleum - Geology.
تاريخ النشر
2015.
عدد الصفحات
various pages :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
العلوم البيئية (متفرقات)
تاريخ الإجازة
1/1/2015
مكان الإجازة
جامعة المنصورة - كلية العلوم - Department of Geology
الفهرس
Only 14 pages are availabe for public view

from 254

from 254

Abstract

The Gulf of Suez rift is considered the first and most important petroleum province in Egypt. It has excellent hydrocarbon potentials.
As mentioned before, this thesis aimed to:
1) Quantify the processes of oil and gas generation, expulsion, and migration of Belayim Marine Oil Field utilizing PetroMod software.
2) Give a proper appraisal of the geologic situation integrated with a comprehensive petroleum characterization model pointed to evaluate the petroleum system and hydrocarbon potential of Belayim Marine Oil Field.
3) Show the pattern of success and failure across the region within the Mesozoic and Tertiary sections and contribute to the development of new exploration plays.
4) Explain the factors controlling the distribution of the different oil and gas fields at the same stratigraphic level.
Integrated 1D basin modeling was applied to evaluate the thermal history of the sedimentary sequence in the Belayim Marine Oil Field. In all 1D models, the present heat flow ranges from 52-64 mW/m2, with the higher values occurring in BM-57 well. Areas of present heat flow maxima are generally coincident with distribution of basement relief and/or high conductivity basement. This higher value occurring at BM-57 with thick highly thermal conductive basin-fill sediment, i.e. South Gharib Formation, whereas the lower values modeled for the BM-24 well are associated with thick lower thermal conductive basin-fill sediment, i.e. Post South Gharib Formation. The higher heat flow is explained by uplift followed by erosion, which provides an additional 1-17 mW/m2 above background of 52-64 mW/m2. Heat is refracted away from regions of thick sediment cover and preferentially channeled through areas of elevated basement. An additional 15 mW/m2 may be produced by conductivity contrasts in basement. The paleo-heat flow values are shown in (Tables 4.10-4.17 and Figures 4.6-4.13) which results in a valid paleo-temperature model. High sedimentation rate can also affect the temperature field due to the low heat conductivity of highly porous sediments. The results of the 1D simulations show the differences in burial, thermal and maturity history. The burial history of the study area is represented by time-depth history plots that show the burial of different horizons traced through time, from deposition to present day. The subsurface temperature was specified for every layer throughout its geologic history. The following thermal regime for Belayim Marine Oil field is proposed based on present-day corrected static bottom-hole temperatures.
1) Paleo-heat flow was highest at ~25-23 Mabp (the Oligocene rifting phase), with cooling caused by a heat flow decline.
2) Paleo-heat flow has increased during the Miocene rifting phase. This thermal scheme has been implemented in the 1D model, applying high heat flows from (~17.2 to 16.8 Mabp.) There was a decline in geothermal gradient due to rapid sediment accumulation (as indicated during the deposition of the South Gharib Formation) resulting in a subsurface temperature that was anomalously low.
3) Paleo-heat flow has increased during the Late Messinian Time Event from ~5.2-4 Mabp, and declining to the background in the Neogene.
For the different source rock sequences, the content of organic matter (TOC) and quality Hydrogen Index (HI) has to be defined together with reaction kinetic parameters for the thermal primary cracking to light and heavier petroleum components.