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71st EAGE Conference and Exhibition - Workshops and Fieldtrips
- Conference date: 08 Jun 2009 - 11 Jun 2009
- Location: Amsterdam, Netherlands
- ISBN: 978-94-6282-103-3
- Published: 08 June 2009
61 - 80 of 112 results
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Traditional Carbonate Classification Documented Digitally in 3D with Micro CT Scanning
Authors J. Proctor, M. Armbruster, S. Bhakta, M. Suhrer, A. Huber, B. Guzman, K. Kanak, S. Arrendondo, T. Cavanaugh, E. Hendersson and B. NurCarbonates are heterogeneous; their pore space is complex; and, as a result, their properties are challenging to predict. The new digital-rock technology helps quantify the pore space of these sediments, which eventually leads to a breakthrough in building relations between various rock properties and understanding their link to the pore-space geometry.
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A Study of seismic velocities and differential pressure dependence in a Middle East Carbonate reservoir
More LessChanges in properties of carbonate reservoirs are not well understood from seismic signature due to the complex relations between reservoir properties and seismic velocities. Having a firm understanding of the relations between reservoir properties and velocities is, therefore, essential in improving reservoirs characterization.
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Reservoir Engineering Aspects of Coalbed Methane: Fundamentals and Application. Reserves Estimations
By K. MoradThe fundamentals of Coalbed Methane are presented. Coalbed methane and conventional sand reservoirs are compared to illustrate their similarities and differences. Using numerous illustrations, fundamental concepts such as the structure of coal and the storage mechanisms, and how adsorption plays an important role are explained.
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Well testing/Well Design in CBM wells
By C. PaveleyThere are a number of completion options available for successful development of CBM. A number of design factors, with field examples, will be presented in this paper as follows: • a comparison of the performance of horizontal wells with vertical wells; covering the effects of wellbore length, skin factor and coal seam thickness on performance. • the importance of wellbore diameter and geometry and their impact directly on wellbore stability (loss of well/laterals) and production (ability to lift liquids). • the effectiveness of cavity and under-reaming completions compared to fractured wells.
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Factors to Consider when Choosing Stimulation Methods for Coalbed Methane Completions
Authors R. D. Rickman and O. JaripatkeCoal is the most abundant hydrocarbon on the planet and locked within these reservoirs is almost 7500 Tcf of natural gas of which about 1000 Tcf is estimated to be currently technically recoverable. Current natural gas production from Coalbed Methane reservoirs, CBM, represents 10.0% of annual U.S. natural gas production with over 20,000 producing coalbed methane wells in 12 states. This is remarkable when one considers that, prior to about 1989, CBM contributed essentially nothing to US domestic gas production.
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CBM Life Management and Case Study
Authors S. Jewell and D. SharplesCoal Bed Methane developments are characterised by a wide variety of technical solutions driven by geography as much as geology. The relatively immature state of the scientific understanding of CBM (compared with conventional oil and gas) is one of the reasons why many different solutions have been deployed when it comes to the development of reserves.
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Hydrocarbons in the NE Netherlands - Past, Present and Future
Authors M. Geluk, J. Grötsch, H. van der Veen and K. van OjikThe North-eastern part of the Netherlands is a prolific hydrocarbon province, which contains the giant 100 Tcf (2850 Bcm) Groningen gas field within Permian Rotliegend desert sandstones and the 1 Bbbl (157 MMcm) Schoonebeek oil field within marine Lower Cretaceous clastic sediments. Next to these fields a large number of smaller gas fields have been found in strata ranging in age from Carboniferous to Paleogene. Currently this petroleum province is going through an important transition in its’ life cycle with underground gas storage and CO2 sequestration in depleted reservoirs becoming increasingly important. Furthermore enhanced oil recovery via the redevelopment of the Schoonebeek oil field is under way - more than 60 years after initial discovery and decades of production.
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EAGE Excursion Amsterdam - City Walk
By W. de GansWhen walking in Amsterdam, it is hard to imagine that below the pavement and the buildings most interesting and complicated geological sequences are located. Although invisible, these sediments have had a major impact on the development of the city.
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Beach Barriers and Estuaries of the Western Netherlands
Authors S. van Heteren and A. van der SpekThe coast of the Netherlands is dominated by barriers situated in front of a 50- to 100- km-wide, low-lying back-barrier area of heavily populated, reclaimed and cultivated tidal flats, estuaries and marshes. In the south, beyond Belgium, the barrier is connected to the mainland of Cap Blanc Nez of northwestern France. In the Netherlands, it follows the overall morphology of the Pleistocene subsurface as it connects the watersheds of the Late Weichselian drainage systems. Although the present morphology of the Dutch coast is strongly modified by tides and waves, first-order features, such as the change in strike from almost S-N in the west to almost W-E in the north, are completely defined by the Pleistocene morphology. Farther east, the barrier continues in German territory.
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Strategies towards Zero-emission Energy through Geothermal Systems and Opportunities for Implementation of New Technologies
Authors K. -H. Wolf, A. Wever and D. GildingThe high energy prices in the past year and the political and public demand for CO2 reduction show that geothermal energy can compete with conventional (i.e. carbon-based) energy sources in North-western Europe.
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Geothermal Legislation in Europe
Authors R. Goodman, R. Pasquali, B. Kepinska, B. Burkhard Sanner, T. Hámor, B. Kepinska, D. Reay, F. Jaudin, V. van Heekeren, W. Bussmann, H. Rueter, P. Dumas and G. EarlsThe IEEA, Altener funded GeoThermal Regulation – Heat (GTR-H (www.gtrh.eu)) project runs from 2006 to 2009 with the aim of identifying and reviewing the regulatory barriers and deficiencies for geothermal heat in unregulated EU countries.
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Geothermal systems as a key component in energy infrastructure – systems and network integration towards a Zero-Emission Power Hub.
Authors A. K. T. Wever, D. Gilding and K. -H. WolfMany countries and companies are developing geothermal systems as a sustainable, secure, and domestic energy source. However, in the Netherlands, with a low thermal gradient, there are no governmental incentives for such developments, making geothermal heat and electricity production at best marginally economic. Therefore smart solutions are needed as to economize geothermal systems, such as integration into existing infrastructure, exploitation of synergies with fossil-fuel based systems, and innovation on well-construction technology.
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ThermoGIS: An Integrated web-based information system for geothermal exploration and governmental decision support for mature oil and gas basins
Authors J. -D. van Wees, J. Juez-Larre, D. Bonte, H. Mijnlieff, A. Kronimus, Sergevan Gesse, A. Obdam and H. VerweijIn the recent years the uptake of geothermal energy through implementation of low enthalpy geothermal production systems for both electricity and heating have been growing rapidly in north-western Europe. Geothermal exploration and production takes largely place in sedimentary basins at depths from 2 to 5 km. Geothermal activities can take considerable advantage from a wealth of existing oil and gas data.
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Ethics, Sustainability and Geothermals with CCS
By R. LowryIn this talk I will discuss some of the philosophical and ethical problems associated with the standard cost-benefit approach to assessing energy technologies and climate change policies. One of the main reasons for discussing these problems is to draw attention to the fact that a calculation of costs and benefits is not enough to determine whether a policy/ energy technology ought to be chosen.
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The conceptual model of the Theistareykir high temperature system in N-Iceland
Geothermal energy is a major energy source for both electricity generation and for space heating in Iceland. In other countries it is emerging as alternative energy. A comprehensive geothermal research program in the Theistareykir high temperature area has been ongoing since 1972. Exploration drilling started in the year 2002 and at the end of 2008 six wells had been completed and tested. Our recent magnetotelluric (MT) survey in Theistareykir area has both characterized known geothermal reservoirs and identified new drilling opportunities.
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Using 3D Seismic Exploration to Reduce the Geological Risk of Developing Geothermal Resources within the Upper Rhine Graben
Authors M. G. Schreilechner, C. G. Eichkitz and A. ScholzThe exploration of geothermal reservoirs follows not the same strategies as the exploration for hydrocarbons. Instead of traps such as structural highs, the presence of faults and associated fractures are the main targets for geothermal reservoirs. Best qualified are recent faults in extensional regimes.
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Economics of integrating geothermal sources in a district grid heating system
Authors K. Gommers and M. BakkerAfter an introduction of Eneco and description of the role for (central) district heating in the Netherlands the presentation will be centered around the economic value of geothermal energy in district heating. The cost of geothermal energy will be compared with the cost of the alternative sources of thermal energy: a gas fired CHP in combination with peak boilers.
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3D Seismic Data - Source for Hydraulic Modeling in Geothermal Exploration within Structurally Complex Tectonic Environments
Authors A. Scholz, C. Eichkitz and U. LotzThe objective of geothermal exploration activities in the Upper Rhine Graben region - Germany - is the analysis of prominent geological structures, fault zones and karst structures in the deeper underground. Thereby the interest is - different from oil field practice - set on fault zones that should be open and active under recent stress conditions. In conclusion geothermal exploration in the given area is focused on open and high permeable fracture zones.
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