Offshore Black Sea – a frontier of world class New just opened for business
AAPG and AAPG European Region Energy Conference and Exhibition (18-21 November, 2007) Technical Program contained a session called, International Hot Spots – The Black Sea
I compiled the Summaries of the meetings of the AAPG conference in Athens 2007. Particular regions such as Bulgaria, Ukraine, Russia and Georgia were covered during the sessions. Some examples of sea Ground Turkey were also covered during these sessions. The exploited, Offshore Black Sea has gained more attention in recent years, as more data have been collected. Especially offshore Ukraine, several generations of 2D seismic has shown some potential at sea so far not been discovered. However, since mid-1990s there has been some interest because the first generation of 2D seismic data and some older seismic CCCP before 1990. With this collection we want to promote greater interest in the Black Sea coast, as we see this as an area for the future as oil and gas laws in the countries bounding matures and becomes more open to international oil and gas companies and investors.
Since the conference took place, there have been some important news A new trend in offshore Ukraine. First time a Production Sharing Agreement was developed with an international oil and gas company in Ukraine.
The PSA for the 12 960 km2 and 3.2 million acres of first surface offshore production sharing agreement in Ukraine was won by Vanco in April 2006, Final negotiations have PSA held in the 1st quarter of 2008. This PSA allows Vanco to perform a new 3D seismic survey and a plan for a deepwater exploration within the first sometimes overlapping belt and truncated traps in the same scheme. trap types, such as slope fan deposits with the mechanisms of semi-structural trap, compactional plane anticlines and stratigraphic traps are also defined in Section foredeep Sorokin. Vanco has also identified large potential game models in the Paleocene Eocene reefs, which have drawn several anticlinal structures. We have also identified structures of Upper Jurassic reefs that could be accommodated higher potential volumes of hydrocarbons.
Vanco recognizes a large unexplored deepwater area with several game concepts. Prykerchenska block can produce up has been
trend is in near the block. ? Vanco will undertake a work program designed to mature drilling sites in Sudak Fold Belt and Tetyaev Prospect. The 3D seismic acquisition to begin in Q2 2008, which takes place in two areas by the prospect Tetyaev and being around 1238 km2. The other area is proposed 3D Sudak B by the prospect and to be around 1800 km2. Tetyaev proect is believed that very probably around 2091 and the prospects mmbo Sudak area B is more oil in 1370 mmbo.
The prospect Tetyaev has a surface area of approximately 225 km2 and it is believed that a vertical closure of 700 meters. The perspective waterdepth in place is about 2185 meters and the prospect is at 4800 meters.
In the high Andrusovo another perspective is identified with a surface area of 110 km2 and a vertical closure of 700 meters. The appeal is likely to mostl 385 mmbo at a depth of 2225 meters and the target depth is 5400 meters.
Upper Jurassic reefs of the western Caucasus-Crimea Implications of Hydrocarbons in the Eastern Black Sea
Guo1 Li, Stephen J. Vicente 1, Samuel P. 1 Rice and Vladimir Lavrishchev2. (1) CASP, Department of Earth Sciences University of Cambridge, 181 Huntingdon Road, Cambridge, CB3 0DH, UK Tel: +44 1223 337 068, li.guo @ casp.cam.ac.uk, (2) Kavkazgeols'emka, ul. 203 Kislovodskaya Yessentuki, Russia
Generalized upper Jurassic reefs are important potential exhibits excellent data on land in the western Russian Caucasus analog and Crimea provide a deposit for the purposes of the coast. A model of development and distribution of carbonate reefs is presented with reference to possible alternative configurations for the Upper Jurassic tectonic northern margin of Tethys.
The well-preserved outcrops of Upper Jurassic reefs can be grouped into dominated reefs, siliceous sponge microbial and microbial types. Irregular, massive coral reefs, dominated formed in the margins of the shallow water platform or something deeper in restricted waters mid-shelf settings. Siliceous sponge microbial microbial reefs occur as lenses and mounds and are restricted to environments deepwater platform outside mid. The development of these reefs was mainly controlled by local variations in water depth, light, and the availability of nutrients.
The reefs have a complex pattern of porosity development reflecting diagenetic separate stories involving near the surface and the depth of burial dissolution, dolomitization and dedolomitization. Porosity is particularly common on the coral reef facies, dominated and is the primary and secondary types.
Coral reefs dominated outcrops similar to land in the western Caucasus of Russia are expected to appear along the northwest margin of the platform-carbonate Yuzhnyi Adler in the eastern Black Sea. Possible isolated reflected deep-water reefs in northern Shatskiy Ridge could be largely partly composed of siliceous microbialites sponge facies and microbialites. Similar reef facies may be present in the central Black Sea High.
Lithostratigraphy University of Bucharest, Balcescu N Bulevardul no. 1 010 041 Bucharest Romania Tel: 0040729610876, ovidiud@geo.edu.ro
In the Romanian Black Sea shelf (offshore) deposits belong to two main geological units: the North Dobrogea orogenic belt and the Moesia Platform. In the North Sea Dobrogea orogenic belt three cycles of sedimentation have been identified: 1. A minor transgression cycle for the compression phase of synrift 1 (Bajocian-Callovian?), The last stage which corresponds to a possible "general" mismatch or a break between 1 and Middle Jurassic, with calcification and black siltic turbidites (Training Heraclea). 2. An intermediate stage of compression consists of transgressive shales, claystones and siltstones (Point Formation), Upper Jurassic-Neocomian in age corresponding to the Senoniense, continued during the Paleogene and Neogene. Many short and long term hiatuses are recorded which include the deposits of the Cretaceous. Three source rocks can be identified for hydrocarbon generation – the black clay siltic to Heraclea Formation sandstones (Middle Jurassic in age), about 1000 m thick. – The black argillites Pontus Formation (Neocomian) and – the Oligocene-Miocene oil shales, clays and marls knows more or less as the beds of Maikop.
The accumulation of hydrocarbons in the Permo-Triassic reservoirs of the Moesia Platform
Penis Constantin1, Niculescu and Mitru Bogdan1 Daniela2. (1) Faculty of Geology and Geophysics, University of Bucharest, Traian Vuia 6th Street, oil basins contain deposits of hydrocarbons in the Triassic deposits only in the northwest of the Moesia Platform and the Southern identified a sample of oil. "This distribution of oil and gas is a bit puzzling, because of its position on and seals of the Triassic formations. Permo-Triassic deposits composed of three lithostratigraphic formations: Lower Red detrital (LRD Fm) (Triassic especially in the bottom of this training and seals consists in the southern part of the lift-Optasi Bals.
Tectonic style and Oil and Gas Accumulation in the Moldavian Platform
Penis Constantin1, Negulescu Rodica2 and Coltoi Octavian1. (1) Faculty of Geology and Geophysics, University of Bucharest, Traian Street Vuia 6, Bucharest, Romania – 020 956, Romania, phone: +40 21 3181588, penec@gg.unibuc.ro, (2) SA Prospectiuni, Prospectiuni SA, Caransebes Street, 1, Bucharest, 020 834, Romania
The Platform of Moldova represents the western part of the East European Platform. Seismic profiles, well logs, cores and cross sections geological maps show that during the Alpine orogeny, the western part of the platform was gradually underthrusted the Eastern Carpathian Orogen. This structural evolution monocline printed character of the deposits and dip westward beneath the Carpathian foredeep (molasse) and Eastern Carpathian Flysch. Tectonics It is dominated by a network of faults in two predominant directions. A first set of major faults, almost parallel to the Eastern Carpathian Orogen is NNW-SSE orientation (Paltinoasa fails, West Paltinoasa error, error and Siret). The second system consists of small cross faults (oriented EW) and generated more tectonic block alignments fails to follow the longitudinal follow-up. Deposits older than the upper Sarmatian the plunge step down from the Eastern Carpathians along major faults. Tectonic blocks in each step and generated gently folded and faulted anticlines monoclinic. The intense compression scheme carbonate platform distribution Scientific Research Institute of Oil and Gas (Naukanaftogaz) Uritskogo Str., 45, Kiev, 03 035, and Tetyana Dovzhok, Department of Oil and gas geology problems, Scientific Research Institute of Oil and Gas Industry (Naukanaftogaz) Uritskogo Str., 45, Kiev, 03 035, Ukraine.
This study is aimed at the subdivision and detailed mapping of the carbonate facies of the Paleocene to be determined by the number of oil discoveries gas and recently in this sequence. The analysis is based on an integrated interpretation of the basic sets and well logs for more than 40 deep wells drilled in different areas of the basin tectonics, regional and seismic data. Paleocene carbonates occur at a depth of 500-6000 m, and extend over most of structural-tectonic zones of the Black Sea basin. The sediment thickness changes of 50-100 meters and 600-900m. The study has highlighted several areas in sediment facies Paleocene carbonate: littoral (alternation of skeletal wackestones and packstone, lime mudstones, marls, calcareous sandstones and siltstones) within the platform (wackestones skeletal packstone 60-70%, 10-20% loam, 5-15% pelitomorphic limestone baundstones 3-5%, sales 10%), outer-platform (skeletal wackestones packstone and 30-40%, 20-30% of marl, limestone pelitomorphic 10%, sales 20%), soft-gas and gas condensate fields are discovered within the Paleocene carbonate to date. Ed Ramirez1, William Moulton2, and Al Garcia3. (1) Toreador Resources Corp, 4809 Cole Ave, Suite 108, Dallas, TX 75 205, phone: 214-559-3933, fax: 214-559-3945, mfitzgerald@toreador.net, (2) Independent Consultant, (3) Integral Technology Group
Six Eurasian countries surrounding the Black Sea. Of these six countries, and two in the central-western high seas in a small town holiday Akcakoca.
The Akcakoca # 1 and # 2 wells were drilled in mid-1970 is designed to test the Mesozoic and Cenozoic sediments ground seen in outcrop and subsurface. Early seismic had indicated the presence of structures formed by the tectonic faults limited by considerable compression no tests were run.
In 2000, Madison Oil Turkey, later merged with Toreador Resources, acquired a permit for 962,000 acres containing Akcakoca wells. Toreador explorationists using existing seismic and original wells determined that the potential existed for significant accumulation. A conventional survey 2-D seismic and follow-up studies of high-resolution 2-D geophysical anomalies allowed speed map that could be linked to the wells in 1970.
In 2004, the Ayazli # 1 wildcat was drilled on an anticline drove three miles south of the original Akcakoca # 1 well. This well tested approximately four arenas 12.0mmcfgpd Eocene age. Drilling in geophysics, which came into this effort.
Unmasking the Myths of Crimea Geology
Igor V. Popadyuk, Naukanaftogaz, Kiev Ukraine 03 035, phone: 38 044 5852 764, fax: 38 044 2487 101 popadyuk@naukanaftogaz.kiev.ua
Crimean Mountains located in the southernmost part of Crimea South Peninsula Ukraine are key to understanding the Black Sea Jurassic. Based on the published paleontological data (Ammon) is likely to Tauric Group to be younger, the more likely it is Aptian-early-mid Albian age. This means that compression affected watershed event in the region of Crimea in late the Albian, not the Middle Jurassic. Myth 2: The flysch and conglomerate sequences widely developed in the eastern Crimea and is commonly referred to are Upper Jurassic Tertiary age, as it could be concluded on the basis of published paleontological (foraminifera) data. This means that the volume of clastics is flowing from the mountains of Crimea during the Tertiary thrust. Yayla thrust is mainly composed of shallow marine carbonates of Upper Jurassic-Neocomian age. Tauric push flysch succession is equivalent Tauric and siliciclastic deposits of Aptian – Mid Albian age. Both films shift to the north, probably were transported during the late Albian pulse and stamped by the post-tectonic cover of Cenomanian sediments of the Late Eocene. The region of Crimea Production GmbH, Vienna, Austria, Rudolf.Dellmour @ omv.com and Gian Gabriele Ori, IRSPS, c / o Univ. d'Annunzio, Viale Pindar 42, Pescara, 65 127, Italy.
OMV Bulgaria is the celebration of the "Varna Deep Sea" exploration license in offshore near the city of Varna in eastern Bulgaria. The block covers a wide range of sources Balkanide tertiary system and the Carpathian Mountains.
Hinterland tectonic activity provided during Eocene to Miocene a large amount of siliciclastic of eroded crystalline and metamorphic rocks. These sediments were deposited on floodplains and alluvial fan aprons during high stands and periods on tectonic inactivity. Relative low is caused massive erosion of the detritus that has disagreements with several children. Today, the "Paleo Kamtchia incisa the sedimentary history of Eocene to Pliocene. Field evidence for this system includes clastic fluvial sedimentary environments and tidal estuaries. This long-life system of the Paleo Kamtchia ended when the river Danube, finally broke through the Carpathians in the early Quaternary. After the event captured the Danube drainage area of the Paleo Kamtchia Kamtchia reducing river system to a stream of minor importance.
3D seismic data acquired in 2006 reveals a complex deep-water fan connected pronounced this "Paleo Kamtchia incised valley." This ventilation system opens a new work in the Bulgarian Sea Black similar to that which has been pursued by Explorationist success around the world in the last 20 years.
Moesia Platform: a key piece in the puzzle tectonics of the Black Sea region
Gabor Tari, AllyGabor Earth Sciences, 6719 Avenue B, Bellaire, TX 770 401, phone: 832-724-1404, gabor@allygabor.com
Based on recent results on the structure of the Moesia Platform and the segments of the Bohemian Massif European Union continental margin, a new model of evolution margins of these liabilities is described. Moesia Platform is interpreted as the top plate of the conjugate margin segment of the European Union Bohemia margin, rifted and left for the Middle and Late Jurassic. Mesia, as a new microplate, separated from the European margin at about the end of the Bathonian and began to drift towards the SE. There are no restrictions on the rate of drift, but by the Aptian Moesia should have reached its present position, at least 600 km southeast of its original position. The address limit Dobrogea orogenic belt. For the second wave, the northeastern edge of the Bohemian spur projecting below the Pannonian basin can be represented by reflection seismic data provide additional geometric opening. For example, the Triassic rift system Dobrogea in Romania can be directly correlated with the sequence of rupture on the southern tip of Strandzha Bulgaria offers a much simpler palaeogeographic scenario than previously thought.
The geological history of the Istria 'Depression' Offshore Romania: Tectonic Controls on Architecture of second order sequence
David polyphase extraordinary history of subsidence, sedimentation and the evacuation of sediments during the late Mesozoic dramatic and Tertiary, which reflects the interaction between these three tectonic settings. First, developed as a trans-tensional rift in the Triassic-Jurassic to be compressed and deformed during orogeny (?) Late Jurassic Cimmerian. residual topography was filled by a west-facing continental clastic-evaporite sequence during the Neocomian. This was denounced by lifting and swelling associated with Apto-Albian rifting and Early Cretaceous sediment by mass wasting driven by gravity. The margin was violated, then from the east by the deposition of the first confined in the open through Istria and the subsequent roll out in the high limit. At the end of the Cretaceous, had been completely buried, only partially evacuated again in the early Paleocene and again very dramatically over the (?) late Eocene. The deeply incised canyon formed at the time, was filled rapidly Oligocene-Miocene sediments, but in the late Miocene (from Messina?) draw-down of the Black Sea basin is still reflected in a third period of incision erosion. continued dependence on the continental margin during the Plio-Pleistocene with rapid deposition of several prograding wedges. This was interrupted by an event important and the severity of slides of various phases of canyon incision shelf margin and phase margin of the platform late listric faults, which reflects the coupling end of the Carpathian orogen.
Oil and Gas Prospects of the Ukrainian Black Sea western
Oxana Khriachtchevskaia, Naukanaftogaz, Uritskogo Str., 45, Kiev, 03 035, Ukraine, phone: +38 (044) 5852762, and Sergiy hryaschevska@naukanaftogaz.kiev.ua Stovba, Naukanaftogaz, Uritskogo Str., 45, Kiev, 03 035, drilling is 0.5. The productive horizons are found in Upper Cretaceous, Paleocene, Eocene, Oligocene and Miocene sequences. activity directly from seismic data. According to expert assessment, each conductor formed within the main Sengor, Istanbul Technical University, Istanbul, each other and fragments of Gondwana-bound land of the continental margin orogen: the Scythides, and the two sides of the Cimmerides. It began to open as a result Alpide subduction the bottom of the Neo-Tethys Ocean in Aptian-Albian interval and at least in its eastern part, clearly dividing a continental margin arc. To the east it is clear there was no previous connection to the valley of the Great Caucasus Flysch and neither has any connection with the shortened course as late as Cimmeride training Nis-Trojan through. He broke a pre-existing tissue, but the story of shortening the rear arch that resembles the current structure of the Sea of Japan. After
Geological history and hydrocarbon potential of the eastern Black Sea region
Anatoly M. Nikishin, Geology Faculty, Moscow State University, Moscow, 119 992, Russia, phone: (495) 939 49 31, fax: (495) 939 38 65, and Alexander P. nikishin@geol.msu.ru Afanasenkov, Yukos Oil, during the Cenomanian to the times Guria Sorokin and river originated in the Eocene-Oligocene transition foredeep basins flexion. Shatsky Ridge was affected by tectonic bending also those moments. Shatsky Ridge is a river system in the Miocene. Since Pliocene Shatsky ridge subsided only up to 2 km simultaneously with the main event of folding in the basin the Tuaspe. hydrocarbon potential of the Shatsky Ridge, Tuapse Basin Basin and Sorokin is connected with: (1) Late Jurassic carbonate platform and the system large print reef-pinnacle: (2) Possible Paleocene bioclastic limestones, (3) potential of the Eocene Nummulites limestone, (4) is possible with stone turbitites Oligocene sandstone bodies, (5) Miocene river system, (6) from the Miocene and Pliocene sandstone horizons.
The impact of recent data on the Interpretation Corporation, Eastern Black Sea Basin, offshore Georgia has not been studied largely with few new data are acquired from the Soviet era. However, recent data acquired demonstrate the existence of a tertiary oil system.
The Oligo-Miocene Maykop Training is an important source of rock that extends from Romania to Turkmenistan. oils collected and analyzed for active seeps offshore Georgia, directly above structural culmination mapping confirms the presence of a generative Maykop in East of the Black Sea Basin.
Georgia Offshore can be subdivided into three tectonic provinces, classic range of the box folds overturned folds, with a common decollment in Maykop.
The primary reservoir sands are believed to Middle Miocene age, and based on 3D seismic data, the sandstones were deposited in deep-water systems channel dam, which originated from the north. Late Miocene to the present deposition system has a southern origin of volcanic / lithic sources.
In 2005, the first well in deep waters in the eastern Black Sea Basin in Turkey was drilled at sea but did not penetrate the system of reservoirs of northern origin. Consequently, the system of offshore oil in Georgia, with millions of opportunities barrel, remains unproven.
Mud volcanoes and fluid migration – Environmental Research, University of Bremen, Klagenfurter Strasse, Bremen, D-24 359, Germany, Tel: +49-421-2184598, skrastel@uni-bremen.de, (2) and the Department Marine Geology Hydrocarbon potential Okeangeofizika Research Institute, Krymskaja Str. Through structural forms of depression along the southeastern margin of the peninsula of Crimea. compressive deformation affects the growth of the diapiric ridges and facilitates the flow of fluids to the seafloor and the evolution of the evolution and formation of mud volcanoes correlated with the gas / fluid migration and gas hydrate occurrences. We pooled mud volcanoes in depression Sorokin in three areas. Different geological characteristics influence the evolution of individual mud volcanoes and therefore their morphology. Collapse depressions dominate an area in the western survey area. A 2.5D seismic data set was collected through the Sevastopol mud volcano which is a depression typical collapsed located on a complex structure with two diapiric ridges. The bright spots near the volcano through the mud, probably marks the base of the zone of stability of gas hydrates. We postulate that overpressured fluids began an explosive eruption that generated the collapse of the volcano depression Sebastopol and subsequent extrusions mud mud cones formed in the depression. The fan deposits of the paleo-homogeneous Don Kuban fan in the central and eastern Through Sorokin are characterized by increased permeability resulting in mud extrusions quiet effusive in Areas 2 and 3. Mud volcanoes in the center of the Zone 2 reach huge size, with diameters up to 2000 m and a height of 100 m where the faults with large displacements allow high mud flow rates.
Petroleum Geology and potential of the Cordillera Shatsky (Black Sea)
Alexey L. Meisner, DCS, Schlumberger inc logelco, 9 str Taganskaya., Moscow, Russia, Moscow, Russia, phone: 61 84 7916868, ameisner@moscow.oilfield.slb.com and Leonid B. Meisner, geological, Yuzhmorgeologiya, Krymskaya Str. 18, Gelendzhik, Russia, Gelendzhik, Russia.
The coast Georgia's mountain Crimea (Ukraine). The aim of this work was the research perspective of Shatsky Ridge. Seismic and magnetic have contributed to the recognition of the main Lower Jurassic geological thick black shale, deposited on top of the Paleozoic basement. Magnetic anomalies most likely caused by the Middle Jurassic gabbro intrusions. Upper section of the Jurassic-Eocene consists mainly of carbonate rocks. This section holds the reservoir quality rocks. Limestone porosity varies between 5-20%, permeability range is 10-40 md. The presence of Upper Jurassic reefs, Eocene probably for the Jurassic and Cretaceous feeders.
Mud volcanoes and seismic anomalies "bright spot" indicate hydrocarbon accumulations in the sedimentary cover of the range Shatsky.
Reservoir prediction, sizes anticlinal and hydrocarbon seeps to conclude that the dorsal Shatsky undrilled prospects can contain and form a basis for future exploration.
Effects of tectonics on the deposition of the Balkans in Eastern Bulgaria
Michal Nemcok, Energy and Geoscience Institute at the University of Utah, 423 Wakara Way, Suite 300, Salt Lake City, UT 84 108, Department of Geology, University of Sofia, Bul. Tzaz. Osvoboditel 15, Sofia 1000, Bulgaria, Eric R. Higgins, Chesapeake Energy Corporation, 6100 N. Western Avenue, Oklahoma City, OK 77 042 TX.
E Balkans during Paleocene-Recent geometry was characterized by a fall 2) post-rift thermal subsidence of the continental crust, 3) against the juxtaposition of the Moesia Platform in the west and not in juxtaposition to the east, the amount of shortening along deep built, being 3.7 km, 3.8 km, 9.5-13.5 km and 14.1 km 12.3. The last age is increasing drive east from middle Eocene to late Eocene to late Eocene / Oligocene. On land animal, which was affected significantly by the Platform against the juxtaposition of Moesia, exhibitions followed last-minute push by the gravitational collapse of the Eocene, Oligocene quiet and Neogene extension. On getting offshore mount exhibitions followed by extension Oligocene-Neogene. A Middle Paleocene-Eocene basin slopes formed in the land of the horse, focusing on the area east of the Balkans, (Varna, NE Bulgaria) oil-related origin. The sequence of deposition of shallow marine shelf sediments is characterized by several stratigraphic cemented surfaces cut cross-sectional structures of the chimney. In this contribution, evaluated. measurement of grain size in two vertical sections continued to distinguish two sequences deposit. Transgressive (TS) and maximum flooding (MFS) surfaces are characterized by extensive calcite cementation, indicating a stratigraphic sequence cementing control. Different types of cement have been recognized. The stable isotope mass signature of these cements indicate precipitation from pore fluids below Eocene marine restore affected by more than meteoric. ? 13C depletions dominant cementing pore "mosaic" of cement as -20.6 ‰ for the hydrocarbon bearing fluids percolated through the sandy sediments near the seafloor at the end of? the Superior Ypresian. Other coarse grain, 13C depleted About the Author
He has a background as civil engineer and geoscientist. He has worked mainly within the oil and gas industry from the mid 1980s. He has written some few fictional novels as well as author of some professional litterature within oil and gas sector, he is now an editor of some web sites, mainly within the travel business.
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