According to the data of sandstone core research, bituminous sandness has also been established in the Perm Region. Using the method of X-ray tomography, the authors evaluated the wettability of oil-saturated cores at various rock electrical resistivity ranges.It has been established that rocks are predominantly hydrophobic with resistivity more than 200 Ω·m, while, rocks practically do notfilter water with resistivity greater than 600 Ω·m. Authors developed an informative logging complex that ensured the allocation ofdifferent types of reservoir areas: hydrophilic oil-saturated, hydrophobic oil-saturated, hydrophobic bituminous (“black sandstones”)for the solving problems of efficient development of such deposits. The results were used to construct a digital geological model of the Bobrikovian horizon of the Siberian field. In this model were identified areas with a predominantly hydrophilic and hydrophobic type of reservoir in the volume of oil-saturated reservoirs.......

An approach to upscaling petrophysical lithotypes is proposed. This procedure results in a new system of effective rock types which characterize lithological diversity of deposits in the seismic frequency bandwidth. These upscaled lithotypes are corresponded„fectiveto some classes of stochastic ensembles composed of log-scale “elementary is defined based on classification error probability. Parameters of “ef „lithotypes. Similarity measure between any two classespetrophysical properties probability distributions for theupscaled lithotypes can be estimated using stochastic petrophysical modeling technique. The obtained system can be naturally linked to the results of geological interpretation of core and well logging data. Theoretical background of the suggested method is considered in the first part. The second part presents two case studies based on synthetic and real data.......

The number of channels in a single land seismic crew is growing each decade by an order, and modern vibroseis mega-crews operate with the number of channels varying from tens to hundreds of thousands. Large number of channels in combination with high-productivity field techniques allow for high-density wide-azimuth seismic surveying with the number of traces per sq. km varying from one-two millions to one hundred millions. The experience of high-density seismic in the Middle East proves that the signal bandwidth could be significantly expanded toward high frequencies, and the seismic attributes could be calculated in a more reliable way.......

In the presented research application of convolutional neural networks for fault interpretation from seismic data was considered. Proposed architecture and training process were described. It was shown by metrics and visual analysis that developed method is able to delineate faults from seismic data in different geological and geophysical conditions. Additional advantage of suggested approach is its ability to produce probabilistic output allowing robust work with geological uncertainties and economic risks related to them due to consideration of many probable cases.......

The results of estimating the weakness of the arrays by geophysical methods are given, with a detailed elaboration of the method of electrometric measurements in wells without core sampling. The rocks of the massif are differentiated according to the degree of weakness of the rocks, which makes it possible to optimize production processes with the economic effect of reducing the time and cost of production. An example of determining the distance from the conductivity of rocks is given. The results of the study are of interest for practical use in studying the properties and watering of rocks, the study of linear weathering of the crust, analysis of large and micro fracturing, etc.......