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FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN

FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN. Vahabov Ulvi Institute of Geology ANAS.

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FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN

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  1. FORMATION OF COMPLEX PRODUCTIVE SERIES DEPOSITS OF AZERBAIJAN VahabovUlvi Institute of Geology ANAS

  2. Deposits of Productive Series (PS) have been for a long time considered to be the main reservoir for the territory of Azerbaijan and adjacent waters of the South Caspian Basin (SCB). During this time, geological and geophysical investigations in the territory of the land of Azerbaijan and the adjacent waters of the Caspian Sea have been opened and at present (44 onshore and 27 in the Caspian Sea) 71 oil and gas fields including and others are under development. Despite the long duration of studies conducted by geologists of different specialties and areas, many questions still remain controversial

  3. Deposits of PS aspreviouslydescribedbymanyresearchersdepositedonaroughsurfaceofreliefbothwithinthelandareaandwaterareaofAzerbaijanpart. Paleologicalmapcompiledbyauthorproves these statements and to a large extent characterize geological setting of Pre-Pliocene age. According to this map one can see that distribution of thicknesses both during lower and upper stages of PS in regional plan is in direct relationship on complexes of underlying deposits. Paleogeological map of Pre-Lower Pliocene age

  4. Their sections they open a new series of sand deposits of Absheronfacies of PS which deposited in such conditions when accumulation of sand material occurred within a relatively small part of Azerbaijan territory of Azerbaijan – Absheron oil-gas bearing area, Djeirankechmyaz depression, Low Kura depression and the adjacent sea area . These processes occurred together with erosion and redeposition of clayey rocks which composed the areas «Caucasian land», and Absherongeoanticline . Map of Lower group PS

  5. At the beginning of formation of the upper stage of PS the activity of vertical tectonic movements led to the fact, that watersofpaleobasinpouredintotheterritoryofAzerbaijan – capturingthecentralandSouthernpartofShamaha-Gobustantrough.Small Djeirankechmyaz, large Adjinaur and Kura bays were formed within the Low Kura depression. On the North Adjinaur bay is limited by Greater Caucasus, on the South by territory of modern Mingechaurwater reservoir. On the South Kura bay is limited by uplifts of Lesser Caucasus and Talysh. Two small bays formed by delta of PaleoAraksand PaleoBolgarchai rivers can be found within this bay. Low Kura bay itself was formed by delta of PaleoKura. SimilarbaysformedinSiyazanmonoclineandtheadjacentwatersoftheAbsheronarchipelago. Map of Upper group PS

  6. Conclusions: • 1. Sedimentation processes throughout the while age of PS are characterized by a complex nature than previously thought; • 2. It was proved and graphically clarified with which deposits the conformable and unconformable bedding of rocks of PS at the underlying complexes is connected; • 3. Maximumthicknessofdepositofproductiveserieswithoutdipanglesislessthan 6000 m. • The results of conducted study will allow to correct the location for location of a more prospective wells for their drilling withintheterritoryofAzerbaijanandtheadjacentwatersoftheCaspianSea and conducting of purposeful drilling.

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