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1st EAGE North African/Mediterranean Petroleum & Geosciences Conference & Exhibition
- Conference date: 06 Oct 2003 - 09 Oct 2003
- Location: Tunis, Tunisia
- Published: 06 October 2003
1 - 20 of 162 results
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2D Seismic Interpretation and Hydrocarbon Potential of Concession NC7, Ghadames Basin, NW Libya
More LessP001 2D SEISMIC INTERPRETATION AND HYDROCARBON POTENTIAL OF CONCESSION NC7 GHADAMES BASIN NW LIBYA 1 MOHAMED A. ABDULLAH (PETROLEUM GEOLOGIST) Arabian Gulf Oil Company P.O Box 263 Summary This study focuses on the northeastern Concession NC7 situated in southeastern quarter of the Ghadames Basin Northwest Libya. In the period between 1959 and 1985 gas and oil shows were encountered in this area and commercial hydrocarbon exploration has continued at certain reservoir levels. However no commercial hydrocarbon discovery has been made within certain other reservoir levels. This study sets out to locate any T.W.T structure closure at reservoir horizons; to use
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Hydrocarbon Source Rock Quality, Distribution and Migration in the Northwest Sirt Basin, Libya
Authors M.Y. Baair, I. Rabti and P.H. SwireP002 HYDROCARBON SOURCE ROCK QUALITY DISTRIBUTION AND MIGRATION IN THE NORTHWEST SIRT BASIN LIBYA Abstract 1 MUSTAFA.Y. BAAIR I. RABTI & P.H. SWIRE Geology Department Veba Oil Operations PO Box 690 Tripoli Libya The area of study represents the northwestern Sirt Basin and its overlap with the Ghadames Basin. Recent exploration efforts have focused on Concession 10 which is at the centre of the study area. Two wells have been drilled on the concession. The A1-10 well had only minor oil shows (poor fluorescence) that were recorded from near the top of the Kalash Formation. The B1-10 well tested oil
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Techniques and Benefits of Combining Seismic Manipulation with Cross-Section Restoration
More LessP003 TECHNIQUES AND BENEFITS OF COMBINING SEISMIC MANIPULATION WITH CROSS- SECTION RESTORATION 1 DAN HODGE DELPHINE ROQUES and STUART BLAND Midland Valley Exploration Ltd. 14 Park Circus Glasgow G3 6AX United Kingdom Fault and horizon correlation on restored seismic enables validation of the geohistory within the context of the seismic data. Critically further interpretation can be carried out on restored seismic panels to bring out a level of detail and confidence in stratigraphic and sedimentary interpretations which may otherwise be difficult or impossible to make. Use of sequential restorations of the geohistory carrying the full information available in the seismic
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Potentiality of Jurassic Play in Ali Ben Khalifa Prospect, Tunisia
By M. ChaabouniP004 POTENTIALITY OF JURASSIC PLAY IN ALI BEN KHALIFA PROSPECT (TUNISIA) 1 STRUCTURE The Ali Ben Khalifa prospect is located in coastal plane 60 km South -West of Sfax city. It is a positive gravity anomaly confirmed as a fractured anticline by seismic data. Near the top of the Jurassic Nara Formation the structure has 30 sq. Km of closure and about 500 m of vertical closure. The Ali Ben Khalifa prospect is explored by two wells (ABK -1A and ABK –2). Before drilling the main target was to explore Lower Cretaceous Jurassic and Middle Triassic reservoirs. RESERVOIRS AND SEALS
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Upper Cretaceous Fractured Reservoir – M'Sela Prospect
Authors A. Ben Ferjani, A. Ouachi, H. Ghariani and M. El EuchP005 UPPER CRETACEOUS FRACTURED RESERVOIR – M’SELA PROSPECT STRUCTURE 1 The M’sela prospect is located in eastern offshore Tunisia in a water depth of 80 m along the southern flank of the Louza block approximately 170 km to the east of Sfax coastal city and 14 km north of the Isis oil field. The M’sela prospect is a structural/stratigraphic anomaly explored by one well (M’sela-1). Prior to drilling it was thought this mounded anomaly is a Paleocene reefal buildup. The M’sela –1 well proved that is a thick complex of Upper Cretaceous fractured volcano-sedimentary rocks draped by a thin senonian
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Palaezoic Petroleum Systems in the Ghadamis Basin, Libya
Authors A.M. Dardour, D.R.D. Boote and A.W. BairdP006 PALAEOZOIC PETROLEUM SYSTEMS IN THE GHADAMIS BASIN LIBYA 1 Summary The intra-cratonic Ghadamis Basin of NW Libya (Fig. 1) contains a significant amount of basal Silurian (Tanezzuft Formation ‘hot’ shale) sourced oil and gas in Ordovician Upper Silurian (Acacus Formation) basal Devonian (Tadrart Formation) Middle-Upper Devonian/Lower Carboniferous and basal Triassic sandstones. Three petroleum systems have been recognized: • The Acacus-Tanezzuft System to the north in fault and subcrop traps A.M. DARDOUR D.R.D. BOOTE and A.W. BAIRD Kingston University Kingston upon Thames Surrey KT1 2EE United Kingdom • A central basin Tanezzuft-sourced system with Upper Silurian Devonian and Lower Carboniferous
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Hydrocarbon Potentiality of the Egyptian Red Sea
By M. TammamP007 HYDROCARBON POTENTIALITY OF THE EGYPTIAN RED SEA 1 DR. TAMMAM MOHAMED TAMMAM Egyptian General Petroleum Corporation Red Sea is Oligocene / Miocene rift basin which might be set up due to the break-up of the basement blocks and then as a result of separation of African Craton from Arabia block. The early initiation of rifting and uplifting of rift shoulder sediments might be started in the Eocene/Oligocene . The second phase of rifting is within Middle Miocene and it may be currently active. The subsurface data enable to assess and clarify the stratigraphic and tectonic peculiarities of the area
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The Tanger-Rabat Segment, Northern Morocco, a Promising Zone for Hydrocarbon Exploration
More LessP008 THE TANGER-RABAT SEGMENT NORTHERN MOROCCO A PROMISING ZONE FOR HYDROCARBON EXPLORATION Abstract 1 The Tanger-Rabat segment constitues the northern extension of the Moroccan Atlantic Basins. This area located at the eastern Atlantic margin is developped in the junction between the Western Moroccan Rif and the Spanish Betic alpine chains. Sedimentary deposits within this zone resulted essentially from the relative sea level changes during the complex successive tectonic phases of continental collision and plate divergence inducing the deposition of various and complex sedimentary series. The synrift serie was dominated by red beds and evaporites deposits within grabbens and half grabbens
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Petroleum Geology of the East Mediterranean
By E. BremanP009 PETROLEUM GEOLOGY OF THE EAST MEDITERRANEAN Abstract 1 An assessment is made of the exploration potential of the East Mediterranean using new 2D seismic and public data. With respect to the Mesozoic the area is divided in a southern sandstone-carbonate province and a central-northern carbonate province. The Tertiary includes Oligo-Miocene continental and turbidite sandstones on the continental margins and on the flanks of the northern thrust belts (in analogy with the Kyrenia Range of Cyprus). Late Messinian fluvial and Pliocene submarine fan sand plays are present in the south and along the coast of the Levant. The three main
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West Delta Deep Marine, Offshore Nile Delta - Aggressive Exploration Program Commercialized in ELNG
By N. SteelP010 WEST DELTA DEEP MARINE OFFSHORE NILE DELTA – AGGRESSIVE EXPLORATION PROGRAM COMMERCIALIZED THROUGH ELNG Sixteen E&A wells have been drilled between 1998 and 2002 in the West Delta Deep Marine concession with a 100% success rate. The concession located in the Egyptian deepwater Nile Delta was awarded to BG and Edison Gas in 1995 and is now operated by Rashpetco on behalf of the Burullus Gas Company (a joint venture company formed by BG EGAS and Petronas – replacing Edison) where the success story continues with an aggressive technology-enabled exploration and development program. 1 NICK STEEL 1 and MOHAMED
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The Rif Domain-Inversion Effects on Petroleum Systems
Authors F. Charrat and M. El AljiP011 THE RIF DOMAIN-INVERSIONEFFECTS ON PETROLEUM SYSTEMS Abstract The scope covers the Rif and the Atlas Belts with the adjoining Eastern Meseta. 1 After Triassic-Liassic Rifting Alpine Inversion occurred due to African and European Collision. Subsequently the Rif in the North was thrusted southward along Salt Decollement Surface. This formed numerous duplexes and imbricate structures that provide folds and sub thrust traps. The Atlas troughs were inverted into intracontinental chains with low-angle thrust traps along the edges of this chain. In the Meseta decollement within upper Salt created Jurassic structures decoupled from Paleozoic-Triassic ones. This inversion caused Jurassic facies exposure
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Thrust Geometry and Kinematic Relationship with Tectonic Inheritance in Northern Tunisia
Authors M.A.O. Bagga and S. AbdeljaouadP013 THRUST GEOMETRY AND KINEMATIC RELATIONSHIP WITH TECTONIC INHERITANCE IN NORTHEN TUNISIA 1 M.A.O. BAGGA1 AND S. ABDELJAOUAD1 1Faculté des Sciences de Tunis Département de géologie Campus universitaire 1060 Tunis Tunisia Summary The geologic and multiscale tectonic study of Ghardimaou-Fernana outcrops has permited to restore the early Miocene SE verging ramp and flat thrust system geometry which have been complicated by later shortening events. The occurrence of ramp folds are closely linked to faults which have regulated the Mesozoïc and Paleogene depositional basins. Introduction In Northen Tunisia the early Miocene inversion results into a thrust system mooving toward the SE
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The Gulf of Corinth – a Half Graben or an Asymmetric Rift?
Authors I. Moretti, D. Sakellariou, V. Lykousis and L. MicarelliP014 THE GULF OF CORINTH – A HALF GRABEN OR AN ASYMMETRIC RIFT ? 1 The Gulf of Corinth is often considered as a typical example of a more or less simple half graben with major border faults to the south and a flexure of the northern shore (Armijo et al. 1996). A lot of new data especially subsurface data and dates from both onshore and offshore has been compiled or acquired through the Corinth Rift Laboratory EEC project. We will discuss here the new structural schema imaged by this data. Geological setting Extension in the Aegean Sea started in
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The Sahel Platform Reconstruction Using Geological and Seismic Data, Tunisia
Authors H. Boussiga, R. Alouani, S. Tlig and M.H. InoubliP015 THE SAHEL PLATFORM RECONSTRUCTION USING GEOLOGICAL AND SEISMIC DATA (TUNISIA) Haïfa BOUSSIGA Rabah ALOUANI Said TLIG & Mohamed Hédi INOUBLI Unité de Recherche de Géophysique Appliquée Faculté des Sciences de Tunis – 2092 – Tunis – Tunisia e-mail : [email protected] Introduction Previous works have dealt with the geology of Paleogene series in the N-S axis zone and "Tunisian dorsale" (Rabhi 1999). These series include the El Haria BouDabbous/El Garia Souar/Chérahil and Fortuna formations which vary regionally in facies and thicknesses (Castany 1951; Burollet 1956) in response to tectonism during the Late Campanian-Maastichtian and Upper Eocene (Turki 1985; Bédir et
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Stratigraphic Effects and Tectonic Implications at Hinge-Zone Area between Sirte Basin and Cyrenaica Platform, NE Libya
By S. El ShariP016 STRATIGRAPHIC EFFECTS AND TECTONIC IMPLICATIONS AT HINGE- ZONE AREA BETWEEN SIRTE BASIN AND CYRENAICA PLATFORM NE LIBYA Summary: 1 The Agdabia Trough and Soluq Depression are the northeastern parts of the Sirte Basin on the passive continental margin of north Africa. They contain a thick succession of Upper Cretaceous and Tertiary sediments of varying lithology from marine shales to shelf carbonates. All the depositional sequences dip toward the southwest (basin direction) and faults are the most prominent structure in the area. Most faults are normal trending NW-SE with downthrow towards the basin. Interpretation of the structural features seen on
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Structural Styles and Hydrocarbon Habitat in Central Tunisia, West of the N-S Axis
Authors S. Kharbachi, N. Boukadi and A. GaayaP017 STRUCTURAL STYLES AND HYDROCARBON HABITAT IN CENTRAL TUNISIA WEST OF THE N-S AXIS 1 1. Introduction From the structural point of view Central Tunisia constitutes the so-called “Atlasic foothills” a transitional zone between the stable Saharan Platform to the South and the Thrust Belt to the North. This position favorable to the development of various structural traps has proved successful in several circumstances. Notable among these are the Douleb Semmama and Tamesmida fields which are producing oil since the late sixties. Furthermore lateral facies changes more or less controlled by structural features take place within Central Tunisia Platform which
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Location and Nature of the African Plate Boundary in Northern Tunisia
Authors K. Mickus, C. Jallouli and M. TurkiP018 LOCATION AND NATURE OF THE AFRICAN PLATE BOUNDARY IN NORTHERN TUNISIA 1 SUMMARY Gravity data are used to image the general crustal structure of northern Africa in particular Tunisia. Residual gravity anomalies constructed using regional seismic refraction models and analyzed using edge-enhancement techniques indicate that a previously unknown east-west trending anomaly with source depths between 3 and 7 km exists in northern Tunisia. Forward modeling of the residual anomalies indicate that the anomalies can be explained by either a crustal and mantle feature interpreted as low-density crustal material that is a remnant of the subducted African lithosphere or a
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Missour Basin – Meso-Cenozoic Tectonic and Sedimentary Evolution and Its Impact on Petroleum Systems
Authors M. El Alji and F. CharratP019 MISSOUR BASIN – MESO-CENOZOIC TECTONIC AND SEDIMENTARY EVOLUTION AND ITS IMPACT ON PETROLEUM SYSTEMS 1 M. EL ALJI* and F. CHARRAT The Missour Basin located in north-eastern Morocco is a part of the Inter-Atlasic domain. Because of its location between the High Atlas to the South and the Middle Atlas to the North the structural style of this zone was controlled by successive tectonic phases which started as early as the Triassic period and ended in the Tertiary time. During the Triassic & Liassic times the Atlas trough was initiated as a result of strikeslip movements along pre-existing hercynian
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Structural Evolution of the Gulf of Gabes-Eastern Offshore-Tunisia
Authors Z. Dey and H. Ben KilaniP020 STRUCTURAL EVOLUTION OF THE GULF OF GABES-EASTERN OFFSHORE-TUNISIA 1 ZIED DEY AND HATEM BEN KILANI ENTREPRISE TUNISIENNE D’ACTIVITES PETROLIERES Exploration Studies Department 27 Bis Av. K. Pacha 1002 Le Belvedere Tunis Tunisia. The studied area located in the Pelagian Platform covers the whole Tunisian part of the Gabes-Tripoli Basin. It is bordered to the south by the NE-SW Jeffara fault to the west by the N-S Axis and to the north by the "Mahdia-Isis" Paleohigh (Fig.1). The Triassic-Pleistocene lithostratigraphic column encountered in the Gulf of Gabes Basin consists of a variety of continental to open marine facies corresponding to
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