- Home
- Conferences
- Conference Proceedings
- Conferences
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 - 50 of 162 results
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
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
-
-
-
Tunisian Atlas and European Wandering Terranes
Authors P.F. Burollet and F. MejriP021 TUNISIAN ATLAS AND EUROPEAN WANDERING TERRANES 11.Cap Bon - Hammamet 12. Bizerte area. 12 11 1 After Zapaterra 1994- Ben Ferjani et al.1990 P.F. BUROLLET AND F. MEJRI 1 st North Africa/Mediterranean Petroleum & Geoscience Conference & Exhibition Tunis 6 – 9 October 2003
-
-
-
New Aspects on the Geological History of the Kufrah Basin, Libya
By U. HerzogP022 NEW ASPECTS ON THE GEOLOGICAL HISTORY OF THE KUFRAH BASIN LIBYA 1 The Kufrah Basin is one of the four large sedimentary Basins of Libya. It covers an area of about 250.000 km 2 with extensions into Egypt Sudan and Chad. With support from the Libyan National Oil Corporation OMV and partner-companies performed a series of studies in the period from 1998 to 2000. These studies included Landsat/ Radarsat interpretation stratigraphic and structural geological fieldwork and seismic interpretation. Incorporation of subsurface and surface data led to new aspects of the geological history of the basin: Infra-Cambrian grabens in the
-
-
-
El Garia Formation in Libya Offshore, Facies and Reservoir Comparison between C137 and NC41 Wells
Authors P. Ronchi, B. Caline, P. Masse and S. CantaloubeP023 EL GUERIA FORMATION IN LIBYA OFFSHORE FACIES AND RESERVOIR COMPARISON BETWEEN C137 AND NC41 WELLS 1 P.RONCHI 1 B. CALINE 2 P.MASSE 2 AND S. CANTALOUBE 2 1 ENI Exploration and Production Division Via Emilia 1 20097 San Donato Milanese (MI) Italy 2 TotalFinaElf Geoscience Technologies avenue Larribau 64018 Pau Cedex France Introduction The main reservoir of the carbonate series in offshore Libya is represented by the nummulite facies of the El Gueria Formation of Eocene age (late Ypresian to early Lutetian). Thanks to the exchange of geological data between TFE and ENI regarding some of Bouri field wells
-
-
-
Reservoir and Seismic Characterization of the Lower Devonian in South West Hassi R'Mel Area
Authors B. Mansouri and M.S. TighiltP024 RESERVOIR AND SEISMIC CHARACTERIZATION OF THE LOWER DEVONIAN IN SOUTH-WEST HASSI R’MEL AREA 1 B.MANSOURI SENIOR GEOLOGIST and M.S. TIGHILT GEOPHYSICIST Sonatrach / Exploration Division ALGERIA Until now in Algeria structural traps was the main target in petroleum exploration and the amount of hydrocarbon discovries is very little comparing to the generated hydrocarbon in the sahara platform. Du to this big amount of hydrocarbon can be discovered in the stratigraphic traps. The area is located in the Northwestern part of the Algerian sahara plateform at the South-west of the Giant HASSI R’MEL gas field ; it is bounded at
-
-
-
Morphology of Dispersed Clay in the Nubia Sandstone Reservoir Rocks and Its Effect on the Reservoir Quality, October Oil Field, Gulf of Suez, Egypt
By G.R. GaafarP025 MORPHOLOGY OF DISPERSED CLAY IN THE NUBIA SANDSTONE RESERVOIR ROCKS AND ITS EFFECT ON THE RESERVOIR QUALITY OCTOBER OIL FIELD GULF OF SUEZ EGYPT 1 Several categories of dispersed clay are described for hydrocarbon bearing sandstone using Scanning Electron Microscopy. These are correlated to rock geological and petrophysical parameters commonly used in reservoir evaluation. Dispersed clays can occur in pores as (1) discrete (not intergrown) particles (2) crystals bridging across pores (3) intergrown crystal linings on pore walls like (4) clay rims (5) clay coats and (6) pore filling. These different clay morphologies significantly affect sandstone porosity permeability capillary
-
-
-
The Application of Structural Modelling in the Simulation of Naturally Fractured Reservoirs
More LessP026 THE APPLICATION OF STRUCTURAL MODELLING IN THE SIMULATION OF NATURALLY FRACTURED RESERVOIRS 1 DELPHINE ROQUES STUART BLAND AND DAN HODGE Midland Valley Exploration Ltd. 14 Park Circus Glasgow G3 6AX United Kingdom Naturally fractured reservoirs account for an ever-increasing proportion of operator portfolios. The derivation and understanding of fracture attribute data is complex with fractured reservoirs having many additional barriers to correct examination. Examples of such difficulties are summarised by Nelson (2001) and include: a lack of in-depth quantitative approaches to describing and characterising fractured reservoirs and overly simplistic approaches to depicting fracture network geometry. Clearly the fluid flow
-
-
-
Fractured Reservoirs Methods Application in the Ahnet Basin, Algeria
Authors M. Badsi, T. Tenkhi and M.C. CacasP027 FRACTURED RESERVOIRS METHODS – APPLICATION IN THE AHNET BASIN ALGERIA 1 M. BADSI T. TENKHI and M.C CACAS Centre de Recherche et Developpement Sonatrach Avenue du 1er Novembre 35000 Boumerdes Algiers Algeria The natural fracturing of rocks can play an important role in the improvement of permeability and may contribute to improve productivity in fields where the primary physical characteristics are poor. In the Algerian sedimentary basins principally the south-western basins determining the fractures network has always been the concern of geologists and the role of fracturing has been highlighted in several prospects. In the Ahnet basin the production
-
-
-
Structural Development and Petroleum Prospectively of the Western Part of the Sirt Basin, Libya Using Remote Sening and Potential Field Data
Authors K.M. Abdunaser and G. ReehP028 STRUCTURAL DEVELOPMENT AND PETROLEUM PROSPECTIVELY OF THE WESTERN PART OF THE SIRT BASIN LIBYA USING REMOTE SENSING AND POTENTIAL FIELD DATA Abstract 1 KHALIFA M. ABDUNASER AND GIUMA REEH Petroleum Research Centre Tripoli-Libya P O Box: 6431 Satellite image analysis radar data interpretation geophysical data and geological data have been used to define the geological structure and Petroleum prospectively of the northwestern portion of the Sirt Basin Libya. Visual and digital satellite image analysis have enabled the rapid mapping of the regional tectonic structures and features while when merged with radar and geophysical data revealed additional and more detailed
-
-
-
Bacterial Corrosion – Comparison between the Chemical and Biological Shielding of the Installations of Sonatrach
By M.A. GanaP029 BACTERIAL CORROSION – COMPARISON BETWEEN THE CHEMICAL AND BIOLOGICAL SHIELDING OF THE INSTALLATIONS OF SONATRACH 1 The bacterial proliferations are harmful. These latter appear by a total or partial obstruction of the drains by filling and perforating unexpected installations and exploitation equipments of surface or basic. The corrosive bacteria (sulphate reducing bacteria iron bacteria thiosuphate-reducing bacteria...) are mainly responsible for these harmful effects in the water injection and cooling systems. Their symbiosis and interaction with the algae the moulds and mushrooms accelerate the process of degradation and create a favorable environment for their growth. In order to face the
-
-
-
Miskar Field – Field Value Gain through Change of Stimulation Approach
By L. TrabelsiP030 MISKAR FIELD – FIELD VALUE GAIN THROUGH CHANGE OF STIMULATION APPROACH 1 The Miskar field has historically had production problems related to the production of proppant from previous frac programmes on a number of gas condensate wells. Over a number of years of production a noticeable volume of lost production of gas has arisen because of the problems caused by the need to slowly bean up wells from start up. A real incentive therefore arose to develop a way to enhance production on any new wells at the same time avoiding the length process involved when re-opening wells or
-
-
-
First SMART Wells in Rosetta Fields
Authors I. Sylvester, P. Thompson, T. Abdel Rahim Ali, M. Toubar and H. KatamishP031 FIRST SMART WELLS IN ROSETTA FIELDS 1 I. SYLVESTER P. THOMPSON T. ABDEL RAHIM ALI M. TOUBAR and H. KATAMISH British Gas Tunisia Ltd PO Box 153 2045 Tunis Tunisia Rashid Petroleum joint operating company (EGPC-50% BG-20% Shell 20% and Edison International -10%) will utilise two-zone SMART choking valves to control commingled gas flows from two separate reservoirs to increase deliverability and to optimise field reservoir management. The first well will be drilled in the producing Rashid-1 field in 2004 and the remainder in the second phase of development. The paper will describe how Rashpetco has used sophisticated reservoir
-
-
-
Multidimensional SVD Processing – An overview
Authors J.I. Mars, J.-l. Mari, F. Glangeaud, N. Le Bihan and V. VrabieP032 MULTIDIMENSIONAL SVD PROCESSING – AN OVERVIEW Abstract 1 Reservoir study need information conveying by reflected waves. Processing before summation as migration AVA processing inversion of the amplitude etc are very efficient but also very complex to obtain. The efficiency is based on the optimization of the reflected waves quality. Most of the processing assumes that primaries waves have been correctly eliminated by wavefield separation techniques. SVD is one of the most used techniques to achieve this goal. It is a good tool when it is applied on single shot dataset (2D dataset). In case of multidimensional dataset (3C 4C
-
-
-
Seismic Processing Package (S.P.P) – Conception and Realisation
Authors A. Hadjilah and A. ToutaouiP033 SEISMIC PROCESSING PACKAGE (S.P.P*) ( CONCEPTION AND REALISATION ) 1 Summary: Seismic Processing Package (S.P.P) that we developed under Windows operating system is a body of programs and realisation under development environment cross-machine with DelphiV7 Borland © (Windows-Linux). It is composed of several interactive scientific applications such as : 1°) KStat Software : This application allows to resolve the problems of fields static by the method of Kupstat for the sand dune regions and also by the Intercept method and Elevation while basing itself on a geological model of the weathered layer deducts from seismic coring . 2°) Wavelet
-
-
-
Recent Advances in 3D Land Processing – A Case History from the Pakistan Badin Area
Authors S. Pharez, A. Karagul, S. Ali and J. SindenP034 RECENT ADVANCES IN 3D LAND PROCESSING – A CASE HISTORY FROM THE PAKISTAN BADIN AREA A. KARAGŮL¹ S. ALI² J. SINDEN¹ and S.PHAREZ¹ Summary ¹CGG Processing & Reservoir Services Great West Road TW8 9GG Brentford Middlesex UK ²bp Pakistan Islamabad The Badin Concession is relatively mature with many small oil fields which collectively account for about 50% of Pakistan’s current oil production. In total about 220 wells have been drilled in the area. The 3D seismic was shot with the dual purpose of helping in the development of the fields and to determine the remaining exploration potential. In 2000-2002
-
-
-
4DST a Strong Tool to Manage Gas Reservoir
By B.K. BelliliP035 4DST UN OUTIL ROBUSTE POUR LA GESTION DES RESERVOIR A GAZ 1. INTRODUCTION La technologie de la sismique 3D a évolue au point ou son application est devenue systématique liée au développement des réservoirs sans pour autant arriver à résoudre certains problèmes d’engineering en cours de production. 1 C’est dans ce contexte que la sismique 4D ou le monitoring sismique est venu apporter des solutions à ces différents problèmes d’ingénierie de réservoir en mergeant les données de la modélisation sismiques des réservoirs avec les résultats du changement de l’impédance acoustique des données sismiques obtenues du monitoring sismique du réservoirs.
-
-
-
An Integrated Evaluation of Prospects in the Late Jurassic Onshore Abu Dhabi
Authors N.O. Al Zaabi, A.B. Al Jeelani, J.F. Dervieux, C. Strohmenger, W. Soroka, R. Rosell, A. El Agrab and S. AliP036 AN INTEGRATED EVALUATION OF PROSPECTS IN THE LATE JURASSIC ONSHORE ABU DHABI 1 NA’EMA O AL ZAABI ABU BAKER AL JEELANI JEAN FRANCOIS DERVIEUX CHRISTIAN STROHMENGER WILLIAM SOROKA RAFAEL ROSELL ABDELFATAH EL AGRAB SULEIMAN ALI SUMMARY Using an integrated approach it was possible to evaluate the hydrocarbon potential for the onshore Abu Dhabi area. The primary focus was on the late Jurassic interval. Available well control was used tie the late Jurassic layers to the appropriate seismic events. Wavelet estimated from the seismic was used to verify the polarity and phase of the seismic data. Geologic information was used
-
-
-
Detection of Carbonate Buildups in Tarbur Limestone by Using Seismic Attributes, SW Iran
Authors I. Abdollahi Fard, M.H. Aliee and A. JavaherianP037 DETECTION OF CARBONATE BUILDUPS IN TARBUR LIMESTONE BY USING SEISMIC ATTRIBUTES SW IRAN Summary 1 The Tarbur limestone has good potential from hydrocarbon reservoir point of view in the southwest of Iran. It was interpreted as a target horizon for oil discovery in a 3D seismic project at National Iranian Oil Company (NIOC) Exploration. Applications of different 3D seismic attributes were useful to study and recognize features such as reefal buildup and fault. Introduction The reflections of seismic waves within sedimentary rock bodies produce an image of their external shape and internal configuration or texture. The analysis of these
-
-
-
Interpretation of Seismic Borehole Data of Rourd Chegga Field Sahara Algerie
Authors A. Bouguern and H.A. BakerP038 INTERPRETATION OF SEICMIC BOREHOLE DATA OF ROURD CHEGGA FIELD SAHARA ALGERIE 1 1 BOUGUERN ABDERRAHMANE & 2 BAKER H.A 1 Laboratoiry physic of earth University of Boumerdes ALGERIA 2 Faculty of earth sciences Unniversity of USTHB Bab ezzouar ABSTRACT: Recently a seismic bore survey (Walk-away) has been realized in Algeria.The aim operation is to study a geological problem met in production field of Rhoud Chegga (RDC). Athough the RDC-6 well has reached the top of the structure and is situated 888 meters at the esat of the RDC-1 well which produces oil the results were infortunatly negative. The RDC-6
-
-
-
Contribution of Seismic Attributes in the Direct Detection of Hydrocarbon, Case History of a Permit in the South Algerian Sahara
Authors M. Djeddi, J. Ferrahtia, M. Djeddi and M.A. AitoucheP039 CONTRIBUTION OF SEISMIC ATTRIBUTES IN THE DIRECT DETECTION OF HYDROCARBON CASE HISTORY OF A PERMIT IN THE SOUTH ALGERIAN SAHARA Abstract 1 DJEDDI Mabrouk * FERRAHTIA Jalel * DJEDDI Mounir ** AITOUCHE Moh Amokrane * * Laboratoire de Physique de la Terre Faculté des Hydrocarbures et de la Chimie Université de Boumerdés 35000 ALGERIE ** Laboratoire des systèmes et signaux SUPELEC Plateau du Moulon 91192 Gif sur Yvette France The zone of interest is located in an important oil and gas zone; its position near Berkine and Illizi basin makes it very important. Our study is based on the
-
-
-
Lithology and Gas Detection by AVO Crossplot Polarization and Intercept Inversion
Authors A. Kassouri and H. DjafferP040 LITHOLOGY AND GAS DETECTION BY AVO CROSSPLOT POLARIZATION AND INTERCEPT INVERSION Abstract 1 In this paper we try to study the causes of amplitude anomalies observed on true amplitude stacked seismic data in two southern Algerian gas fields using AVO crossplot analysis and acoustic impedance contrast estimation from AVO intercept. We present two examples associated with gas sandstones: Carboniferous gas sandstones in Sbaa basin and Ordovician gas sandstones in Ahnet basin. The two factors that strongly determine the AVO behavior of sandstones reflections are the normal incidence reflection R(0) called the intercept and the relative change in amplitude with
-
-
-
Seismic Inversion and Reservoir Characterization, NC73, Sirt Basin, Libya
Authors A. Shahlol and A. MananiP041 SEISMIC INVERSION AND RESERVOIR CHARACTERIZATION NC73 SIRT BASIN LIBYA 1 ABDU-ELHAMED A. SHAHLOL and ALI M. MANANI Exploration Division Arabian Gulf Oil Company Benghazi Libya P. O. Box 263 Summary Geophysical inversion involves mapping the physical structure and properties of the subsurface of the earth using measurements made on the surface of the earth. However this is a broad definition that actually involves all seismic analysis work and interpretation. Inversion technique attempt to recover a broad-band pseudo-acoustic impedance log from a bandlimited seismic trace. This paper presents the seismic inversion work conducted over a carbonate deposits in the central
-
-
-
New Data on Oil Source-Rocks in Pliocene Sediments of the South Caspian Petroleum System
More LessP042 NEW DATA ON OIL SOURCE-ROCKS IN PLIOCENE SEDIMENTS OF THE SOUTH CASPIAN PETROLEUM SYSTEM 1 SUMMARY Traditionally the principal oil source–rocks in the South Caspian basin (SCB) are considered to be Paleogene-Miocene deposits (Maykop-Diatom). As a result of conducted studies of Lower Pliocene sediments (Productive Series-PS) it had been revealed the oil generation potential of some stratigraphic units of PS. Results of given research are very important for development of further strategy of exploration and resources estimation in the South Caspian region. Black Sea 0 G eorgia Turkey 150km Dzirul Massif Armenia Greater Caucasus Lesse Cau r casus Azerbaijan
-
-
-
L. Albian & Cenomanian-Turonian Source Rocks – A Key to Assess the Geodynamic & the Petroleum System of J.Goraa Area-Salt Dome Zone Northern Tunisia
Authors G. Chaari, H. Belayouni and M. SoussiP043 L. ALBIAN & CENOMANIAN-TURONIAN SOURCE ROCKS – A KEY TO ASSESS THE GEODYNAMIC & THE PETROLEUM SYSTEM OF J.GORAA AREA-SALT DOME ZONE NORTHERN TUNISIA 1 G. CHAARI H. BELAYOUNI & M. SOUSSI I. INTRODUCTION The work achieved concerns a geochemical study of the two source rocks occuring in the Goraa area (Salt Dome Zone-Northern Tunisia) the Late Albian Mouelha member and the Cenomanian-Turonian Bahloul formation. A special emphasis was accorded to the thermal maturity variation along a north-west to south-east axis across the study area. The objectives are to assess the petroleum system in this area and predict migration
-
-
-
Hydrocarbon Potentialities of October Oil-Field area, GOS, Egypt
Authors G.R. Gaafar and M.Y. Zein El DinP044 HYDROCARBON POTENTIALITIES OF OCTOBER OIL-FIELD AREA GOS EGYPT 1 M.Y. ZEIN EL DIN 1 and G.R. GAAFAR 2 1 Geol. Dept. Fact. Of Science. Al Azhar Univ. 2 Gulf of Suez Pet. Company (GUPCO) The geochemical analysis data of 350 samples from 5 wells in October oil-field area have been used in this study. These analyses include the Total Organic Carbon (TOC) determinations programmed pyrolysis kerogen examination and vitrinite reflectivity measurements. The potential source rock intervals in the drilled section were determined and investigated through thermal history models. These models were run at the analysis well locations (5 wells)
-
-
-
Gravity Compilation of Libya and Its Interpretation
Authors A. Sahil, A. Suleiman, O. Hammuda, B. Mejrab and A. BizanP045 GRAVITY COMPILATION OF LIBYA AND ITS INTERPRETATION 1 A. SAHIL A. SULEIMAN O. HAMMUDA B. MEJRAB and A. BIZAN Petrolume Research Center Tripoli- Libya The process of preparing a gravity compilation of Libya was started in the mid nineties when the National Oil Corporation (NOC) appointed a committee to evaluate the combined gravity project of Libya. A stage of assembly and integration was carried out through Robertson Research International Limited in Llandudno in 1998 with the expectation that more data would be forthcoming particularly elevation data where it was lacking in the center of the country. A second stage
-
-
-
Gulf of Gabes – Tentative prediction of gas quality
By E. ClarkeP046 GULF OF GABES – TENTATIVE PREDICTION OF GAS QUALITY 1 The occurrence of significant quantities of carbon dioxide nitrogen and hydrogen sulphide within the Gulf of Gabes has a major impact upon the economics of hydrocarbon exploration and development in the basin. Consequently being able to predict both the presence and concentration of these non-hydrocarbon gases is a key objective for BG Tunisia. However this task is complicated by the existence of multiple sources for both hydrocarbons and non-hydrocarbons. Therefore an investigation has to be performed in two parts firstly it is necessary to identify which sources contribute to
-
-
-
Structural Evolution of the Cap Bon-Grombalia Area, Northeastern Tunisia – Effects on the Hydrocarbon Generation & Expulsion Histories
Authors F. Adouani, S. Aissaoui and M. SaidiP047 STRUCTURAL EVOLUTION OF THE CAP BON- GROMBALIA AREA (NORTHEASTERN TUNISIA) EFFECTS ON THE HYDROCARBON GENERATION & EXPULSION HISTORIES 1 F.ADOUANI S.AISSAOUI & M.SAIDI ETAP-27bis Av. Kheireddine Pacha –1002 Tunis-Tunisa INTRODUCTION After the discovery of Belli and El Manzah fields the Eocene fractured limestones reservoir became an important objective in northeastern Tunisia. The selection of new drilling targets in the complex Cap Bon-Grombalia area imposes to determine the geological evolution and hydrocarbon potential. The purpose of this paper is to provide the necessary data for the ranking of new prospects within this area. The following are quantified to meet the
-
-
-
Microwave Measurement System for On-Flow Monitoring of Water/Hydrocarbon Mixtures
By A. BertoliniP048 MICROWAVE MEASUREMENT SYSTEM FOR ON-FLOW MONITORING OF WATER/HYDROCARBON MIXTURES Alessandro Bertolini* Marwan Technology s.r.l. Via F. Buonarroti 2 I-56127 Pisa Italy In this work we present a microwave–based technique for the on–flow measurement of the water concentration in hydrocarbon compounds. Preliminary results on lubricant oil showed that water content ranging from 100 to 2000 ppm can be detected with an instrumental noise limited accuracy of ±30 ppm. The device is based on a microwave X– band (8–14 GHz) spectrometer [1] that simultaneously estimates both dielectric dispersion and absorption by means of a differential technique already used in the past
-
-
-
Portable Gravity Gradiometer Using a Monolithic Sapphire Differential Accelerometer
By A. BertoliniP049 PORTABLE GRAVITY GRADIOMETER USING A MONOLITHIC SAPPHIRE DIFFERENTIAL ACCELEROMETER Alessandro Bertolini* Marwan Technology s.r.l. Via F. Buonarroti 2 I-56127 Pisa Italy In this work we demonstrate the feasibility of a new class of low frequency accelerometers for geodynamics studies and space applications. We present the design features of a new low noise single–axis differential accelerometer suitable for airborne geophysical survey and gravity gradient measurements. A resolution of 1 Eotvos (1 E = 10 −9 s −2 ) is achievable in a compact lightweight (less than 2 Kg) room temperature operating instrument. The basic components of a single–axis gravity gradiometer
-
-
-
A Metrological Technique of Aeromagnetic Data Seabed Reduction – The Tyrrhenian Area Test
By O. FaggioniP050 A METROLOGICAL TECHNIQUE OF AEROMAGNETIC DATA SEABED REDUCTION – THE TYRRHENIAN AREA TEST Summary 1 We show the results obtained reducing the aeromagnetic anomaly field of the Tyrrhenian area (Italy) to the seabed surface and over part of the continental shelf topography. The bathymetry and the topography of the Tyrrhenian area show great variations related to a complex structural setting often associated to the presence of many tectonic lineaments seamounts or volcanic islands. The reduction of the geomagnetic field to the topographic surface is performed using a metrological technique (BTM) based on the downward continuation of the spectral high
-