Issues of the journals Геофизика 2012 y. issue 4

The geological structure Yuryuzano-Sylvenskoy depression in the Sverdlovsk Region

(Adiev R.Ya. Munasypov N.Z. Kiselev V.V. Kreknin S.G. Pogretskiy A.V. )

On the basis of the up-to-date detailed seismic works by CDP 2D and 3D there are shown the results of geological structure of Paleozoic deposits on the territory of the south-western part of the Sverdlovsk region, in tectonic respect confined to Yuruzan-Sylvenskaya depression. There are shown real opportunities of seismic exploration in mapping complex hydrocarbon traps and reservoir prediction. Petroleum potential of the territory is estimated.......

  • 2012  № 4, pp. 32-34

The role of tectonic mapping in complex geological conditions in the search for hydrocarbon deposits in unexplored areas Yuryuzano-Sylvenskoy depression

(Burdygina G.V. Timergazin K.K. )

The article is devoted to issues of fault delineation in complex geological setting of under investigated areas of Yuruzan-Sylvenskaya depression. Realization of step-by-step reconstruction offormation history of separate tectonic elements is illustrated in the work on the real data and their influence on formation of hydrocarbon traps is analyzed.......

  • 2012  № 4, pp. 35-38

Exploration work at the current level raneeotkrytyh deposits - Reserve a significant increase in stocks

(Adiev R.Ya. Baldin V.A. Munasypov N.Z. )

Last years experience of exploration works at the previously discovered deposits of the north-east of Western Siberia shows that after installation of state-of-the-art seismic exploration by CDP-2D/3D methods and exploration drilling with up-to-date technology of tests for production stimulation, significant (in several times) increase of explored hydrocarbon reserves takes place at all the deposits. Installation of CDP-2D in the 90s and reinterpretation of well logging data at long producing fields of Soleninskiy deposit lead to discovery of new accumulations and growth of commercial gas reserves in Lower Cretaceous deposits. In the course of exploration and commissioning of Yurkharovskiy, Pelyatkinskiy, Vankorskiy deposits, put on production at the beginning of XXI century, an essential growth of prospective hydrocarbon resources and reserves took place. Due to modern exploration there was discovered unique multilayer structure of the West and East-Messoyakhskiy deposits, which according to seismic exploration and drilling data represent just fragments of one whole giant deposit. In the process of modern exploration at Suzunskiy and Tagulskiy oil-gas deposits their recoverable reserves increased in several times, and the deposits fall into large-scale catego/y. Robust estimate of hydrocarbon reserves for the rest oil and gas deposits in the north of the Yamal-Nenets Autonomous District and the Krasnoyarsk territory has not been carried out yet. The main growth of hydrocarbon reserves at the previously discovered deposits of the north-east of the Yamal-Nenets Autonomous District and the north-west of Krasnoyarsk territory are connected with search for accumulation in deep horizons of Lower Cretaceous (at the edge of shield and at the bottom of Neocomian wedgeouts) and Jurassic deposits.......

  • 2012  № 4, pp. 39-42

An approach to the study of oil and gas prospects of Bashkortostan Riphean platform for regional seismic data

(Akhmetshin I.N. Enikeev R.Kh. )

Approach to help the prospect evaluation of preDevonian sediments in Uralforland was studied. Typical carbonate belts and geologic indicators of the source rock occurrence in the carbonate-clastic formation with source property were determined from the sequence stratigraphy interpretation of regional seismic lines. The specific source bodies were mapped after to predict prospect areas......

  • 2012  № 4, pp. 43-46

The use of the tracking filter for processing SLEEP SWEEP

(Gafarov R.M. )

The article tells about the way of eliminating the neighboring source positions interference when carrying out field seismic works by Slip Sweep method. The principle of struggle with disturbance is based on frequent filtration of the received signal on the stage of obtaining vibrorecords to slip sweep convolution. Since the interference from neighboring SP is artificial with known parameters, therefore it is predictable. Using this property and applying the time-variable frequent limit Д/ter (tracking filter) the author was able to suppress the wave-interference significantly pointing out the useful signal. In addition, irregular waves-interference (microseisms) are removed. This method allows increasing vibroseis source productivity in several times not only without quality deterioration, but also with improvement compared to Flip flop standard method.......

  • 2012  № 4, pp. 47-53