Papers by Akper Feyzullayev
Over the last decade, GPS measurements in Iran, Azerbaijan, and adjacent regions have provided a ... more Over the last decade, GPS measurements in Iran, Azerbaijan, and adjacent regions have provided a direct quantification of the displacements of the earth surface in that region of the Arabia-Eurasia collision zone. We present an up to date velocity field in the southern Caspian region of the collision zone. A striking feature of the velocity field is the change in
Petroleum Geoscience, 2001
This study is based on the isotope-geochemical characteristics of oils from 53 fields in the Sout... more This study is based on the isotope-geochemical characteristics of oils from 53 fields in the South Caspian Basin -from Upper Cretaceous, Eocene, Oligocene-Lower Miocene (Maykop), Middle and the Upper Miocene (Diatom) and Pliocene. The isotopic composition of carbon (813q allows two main groups of oils to be identified: (1) isotopically heavy and (2) isotopically light oils. The first group includes oils assumed to be generated by Upper Cretaceous, Eocene and Oligocene-Lower Miocene sources. The second group consists of oils assumed to be generated by Diatom (Middle and Upper Miocene) sources. Isotope-geochemical and biomarker parameters demonstrated that oils in the Pliocene reservoirs are not syngenetic to their enclosing deposits. The isotopic composition of carbon in oils and hydrocarbon gases in mud volcanoes and fields and the biomarker parameters of oils allow several isolated stratigraphic oil-and gas-producing complexes (source rocks) in the Mesozoic, Palaeogene-Lower Miocene and Middle-Upper Miocene to be postulated. Oils in the Pliocene reservoirs and in mud volcanoes consist of mixed oils generated by the Pre-Diatom and Diatom deposits and of oils from only one of the above-mentioned complexes.
Energy, Exploration & Exploitation, 2007
Energy Exploration & Exploitation, 2010
Results are presented of the first pre-drill overpressure prediction in the South Caspian basin (... more Results are presented of the first pre-drill overpressure prediction in the South Caspian basin (SCB) on the basis of seismic data. The method is based on the REZAYR software package, which operates in Microsoft Windows. The analyzed seismic time-section fragment in the SCB was initially converted to an impedance section and then to a formation velocity section. Three overpressure zones of different thicknesses and extents are established. The shallowest overpressure zone extends to depths of less than 1 km. The nature of this relatively thin zone can be associated with biochemical gas generation. The second overpressure zone covers the depth interval 1.5–3 km and is most likely the result of non-equilibrium compaction (under compaction) because of high sedimentation rates. The third overpressure zone, the longest and thickest, is observed in the 6–9 km depth interval and is most likely attributed to hydrocarbons generation. This deepest zone poses the greatest risk for drilling. Th...
Energy Exploration & Exploitation, 2009
Two basic factors are identified that contribute to overpressure in different sedimentary basins ... more Two basic factors are identified that contribute to overpressure in different sedimentary basins of the world, including the South Caspian Basin (SCB): tectonic stress and subsurface temperature. Two overpressure zones are identified in the SCB: 1. An upper zone (depth interval 600–1200 m), conditioned by disequilibrium rock compaction (undercompaction) and 2. A lower zone (zone of decompaction) conditioned by hydrocarbon generation (depth below 5 km). The lower overpressure zone is the most intense and depends on the thickness of the shale sequence, the content and type of organic matter, and the temperature conditions of kerogen transformation to hydrocarbons. In this zone the greatest risk is associated with gas generation at depths greater than 9 km, due to both more intense thermal breakdown of kerogen and the cracking of liquid hydrocarbons generated earlier. Overpressure is a major cause of diapirism and mud volcanism in SCB.
The educational guide is devoted to the advanced investigatition techniques of organic matter, oi... more The educational guide is devoted to the advanced investigatition techniques of organic matter, oils and gases which are widely used in a world scientific practice at an assessment of hydrocarbon potential of the sedimentary rocks, studying of conditions and the mechanism of generation, migration, formation and preservation of the hydrocar¬bon fields and development of criteria of their searches. In the first part of the guide the description of theoretical bases of each method, its value and solved problems is given. In the second part examples of application of these methods for studying of hydrocarbon systems of the South-Caspian basin are given. The well illustrated guide is recommended to students, doctorants, teachers and the experts engaged in area of geology and geochemistry of oil and gas.
63rd EAGE Conference & Exhibition
65th EAGE Conference & Exhibition
63rd EAGE Conference & Exhibition
62nd EAGE Conference & Exhibition
Journal of Geology & Geosciences
Caspian and Black Sea Geosciences Conference, 2008
72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, 2008
Temperature measurements have been made in the Lokbatan crater at three locations after the explo... more Temperature measurements have been made in the Lokbatan crater at three locations after the explosion of 25 October 2001. The measurements were made at depths of 0.5m, 1.0m and1.5m into the mud ejected at the time of the explosion, and have continued to be made at intervals of approximately one month. The temperature measurements do not seem to indicate a steady cool-down with time, but rather an initial cooling for about150 days after the primary explosion, followed by more recent re-heating events. This pattern of events is likely consistent with the on-going supply of gas to keep the central crater flame burning (at about 0.5m high over an area of about 1m2, as observed in late May, 2002); and also consistent with sporadic flame outbursts since the primary explosion, as also observed.
The territory of Azerbaijan is characterized by wide development of natural gas seepages which ca... more The territory of Azerbaijan is characterized by wide development of natural gas seepages which can be unified in two groups: macro-flows and micro-emissions. The focused macro-flows of gas are related with mud volcanoes, mineral/thermal springs. Micro-emissions of gases have everywhere occurring which locally become intensify over petroleum fields and mud volcanic areas. Now in territory of Azerbaijan it is known about 1000 vents of mineral and thermal waters (Аskеrоv, 1962), total water discharge of which is 105 million l/day. On a prevailing gas compo-nent they are subdivided on mainly methanic (about 400 outputs), carbonaceous (about 350) and methanic-nitrogenous (about 250). Distribution of these waters in space conforms to the certain regularity: carbonaceous waters are located basically on a Lesser Caucasus mountains and their origen, supposedly, relates with metamorphism of carbonate rocks caused by young quaternary volcanism; methanic waters is occurred, basically, on easter...
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Papers by Akper Feyzullayev