On the prospects of supplementary exploration and oil-gas fields exploitation in VII horizon of Dashgil area

An oil deposit in VII horizon (Pereryva suite) on Dashgil area was revealed in August, 1955 after the test of the well No. 15, which was blowing out oil, gas and water with initial flowrates in 140 t/day of oil, 12.000 m3/day of gas and 230 m3/day of water correspondingly. In October, 1955, the horizon was tested in the well No. 24 in the interval of 2636–2616 m and 119.000 m3/day of gas, 12 t/day of condensate and 128 m3/day of water obtained. In the following years VII horizon was developed and tested in exploration wells drilled in various parts of folds. However, commercial flowrates of oil and gas had been obtained only in 3 tectonic blocks on southern limbs of the fold. In all wells of its northern limb while testing had been obtained only water in great number. The paper considers the issues on the state of exploration of developed hydrocarbon deposits and the prospects of their supplementary exploration; the locations for the exploration wells drilling have been defined. Based on actual data obtained by drilled structural-coring well, the limitation of zone damaged by Dashgil mud volcano noted and well drilling on the southern flank of the volcano recommended. The eastern periclinale of the fold is also reviewed as prospective.