000			05747namaa22004331i 4500
003			EG-GICUC
005			20260303101916.0
008			260220s2025 ua a|||frm||| 000 0 eng d
040			_aEG-GICUC _beng _cEG-GICUC _dEG-GICUC _erda
041	0		_aeng _beng _bara
049			_aDeposit
082	0	4	_a551
092			_a551 _221
097			_aPh.D
099			_aCai01.12.16.Ph.D.2025.Al.R
100	0		_aAli Saeed Ali El Sayed, _epreparation.
245	1	0	_aReservoir characterization using integrated seismic attributes & inversion with well-log analysis in baltim field, Nile Delta, Egypt / _cby Ali Saeed Ali El Sayed ; Supervisors Prof. Dr. Walid M. Mabrouk, Dr. Ahmed Metwally.
246	1	5	_aتطبيقات دراسة خواص الخزان البترولي باستخدام الخصائص السيزمية والنمذجة العكسية وتحليل التسجيلات البئرية في حقل بلطيم، دلتا النيل، مصر
264		0	_c2025.
300			_a138 pages : _billustrations ; _c25 cm. + _eCD.
336			_atext _2rda content
337			_aUnmediated _2rdamedia
338			_avolume _2rdacarrier
502			_aThesis (Ph.D)-Cairo University, 2025.
504			_aBibliography: pages 131.
520		3	_aThe Baltim gas fields, located offshore in the Nile Delta, are known for substantial gas condensate accumulations within the Pleistocene (El-Wastani Formation) and Pliocene (Kafr El- Sheikh Formation) reservoirs. This study aims to evaluate the hydrocarbon potential of these reservoirs by employing a comprehensive geophysical approach, incorporating seismic data interpretation, seismic inversion, and extended elastic impedance (EEI) modeling. The primary objective is to accurately identify gas-bearing zones, estimate Gas Initially In Place (GIIP), and propose optimal drilling locations to reduce exploration risks. The study begins with analyzing structural seismic attributes such as fault discontinuity and coherence, which were integrated to assess the compartmentalization and faulting characteristics of the reservoirs, critical for understanding hydrocarbon trapping mechanisms. Additionally, stratigraphic seismic attributes, including sweetness, reflection strength, and spectral decomposition, were used to delineate gas- bearing sands and channel fairways within the Pleistocene and Pliocene formations, with spectral decomposition helping identify significant channelized reservoirs with potential for gas accumulation. Post-stack seismic inversion techniques were applied to estimate gas volumes and refine the GIIP calculations, revealing significant gas accumulations in the target reservoirs. The GIIP for the Pleistocene anomaly was estimated at approximately 0.4 Gm³ (14.1 BCF), while the Pliocene anomaly exhibited an estimated GIIP of 32.87 BCF (0.93 Gm³) to 33.93 BCF (0.96 Gm³). Additionally, pre-stack seismic inversion and EEI analysis were employed to further characterize the lithology and refine the identification of gas-bearing sands, allowing for a more accurate estimation of reservoir properties, including porosity and water saturation. The Probability of Success (POS) for the Pleistocene gas-bearing sands increased from 49% to 69%, while for the Pliocene anomaly, the POS improved from 46% to 66%. These enhancements in success probability strongly support the potential of both reservoirs for gas production. Based on these results, it is recommended that an exploratory well be drilled in each anomaly to confirm the gas presence, and upon successful exploration, additional development wells can be drilled to maximize production from these promising gas reservoirs.
520		3	_aهدف هذه الدراسة إلى توصيف خزانات الغاز في حقل بلطيم بدقة، وذلك من خلال دمج السمات السيزمية (Seismic Attributes)، وتحليل السعة مقابل الإزاحة (AVO)، والانقلاب السيزمي (Seismic Inversion)، وتحليل الممانعة المرنة الممتدة (EEI)، مع بيانات التسجيلات البئرية. ركزت الدراسة على تكوينات العصر البلايستوسيني (الوسطاني) والعصر البليوسيني (تكوين كفر الشيخ) التي تحتوي على تراكمات غازية كبيرة. أظهرت النتائج فعالية دمج الطرق الجيوفيزيائية المتقدمة في تحسين تحديد الرمال الحاملة للغاز، وتقليل الغموض في التفسير، وزيادة احتمالية النجاح (POS) في عمليات الحفر المستقبلية. كما تم تقدير الغاز الأصلي في المكان (GIIP) لكل من شذوذات البلايستوسين والبليوسين، حيث بينت النتائج وجود إمكانات واعدة للحفر والتنمية في المنطقة.
530			_aIssues also as CD.
546			_aText in English and abstract in Arabic & English.
650		0	_aGeophysics
650		0	_aجيوفيزياء
653		1	_aSeismic Attributes _aPost-stack seismic inversion _aPre-stack seismic inversion _aEEI _aGas-bearing channel sands _aGas reservoirs _aEl Wastani Formation _a Kafr El Sheikh Formation _aBaltim Field _aOffshore Nile Delta _aالصفات السيزمية _aالانقلاب السيزمي
700	0		_aWalid M. Mabrouk _ethesis advisor.
700	0		_aAhmed Metwally _ethesis advisor.
900			_b01-01-2025 _cWalid M. Mabrouk _cAhmed Metwally _UCairo University _FFaculty of Science _DDepartment of Geophysics
905			_aShimaa _eEman Ghareb
942			_2ddc _cTH _e21 _n0
999			_c178615