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Aim. This article discusses the possibility of reducing ecological costs and risks during exploration of oil and gas fields. To this end, we propose to reduce the number of exploratory drilling works performed using unjustified non‐productive wells. Such a problem can be solved with the help of innovative seismic‐acoustic methods of direct deposit exploration.Methods. The method of microseismic noise estimation (MNE) in application to hidden hydrocarbon de‐ posits is proposed. When implementing the MNE algorithms, Chebyshev spectroscopy and analysis of the noise in terms of Gaussian distribution were used.Results. The hardware im‐ plementation of the MNE method is presented. The key component of the hardware complex is presented by an autonomous microprocessor 3D seismic module. The seismic module registers signals across the frequency range of 0.5‐40 Hz with a level of spectral density of self‐noise not higher than 0.5 nm×Hz‐1/2. Presented both in land and sea design, the module is compact and mobile.Conclusion. The application of the MNE method in prospecting and exploration allows identification and exclusion of obviously non‐productive wells from drilling, as well as reduc‐ tion of the total number of wells more than by twofold. For the Caspian region, this indicator is expected to be higher. As a result, the method will provide a significant reduction in the envi‐ ronmental consequences of the oil and gas industry as a whole.

The interaction of CuCl and 2-(phenyl-4-chlorophenylacetyl)indandione-1,3 (HL, C23H15ClO3) in a mixed organic solvent (CH3CN, C5H5N, EtOH) gave a solvated crystal complex of copper(II) of composition [Cu(C2H5OH)(L)2]•C2H5OH (I). The isolated compound was investigated by X-ray and IR spectroscopy methods. Lattice parameters of (I): space gr. P21/c, a = 14.982(1), b = 14.558(1), с = 20.608(2) Å; β= 105.176(2)°; Z = 4 (Z′=1). It is established that the structural units in the crystal structure of the obtained compounds are the neutral square-planar coordination spheres of Cu(II) with cis-oriented deprotonated indandionate ligands L. The spheres are located in the space pairwise. One molecule of EtOH is included in the internal sphere of the complex, and the second is a bridge that unites the coordination centers due to the hydrogen bonds between the hydrogen atom of the hydroxo group of the coordinated alcohol and the O-atom of the keto group of the adjacent bis-chelate. This results in a dimer structure. At the same time, in addition to ethanol, molecules of other co-solvents (CH3CN, C5H5N) do not participate in complex formation and do not form solvates. It was found that a copper(II) complex is formed from copper(I) chloride. When using copper(I) iodide as a starting compound in ethanol in the presence of pyridine the formation of the chelate with the deprotonated ligand HL is not observed.

Data on a systematic research of the extraction of nitric and chloride acids from mixed nitric-chloride solutions with neutral oxygen containing compounds – triisoamylphosphate and isoamyldyalkyl (C7–C9) phosphine oxide are presented. The composition of the extracted compounds is determined, the isotherms of the extraction of acids for solutions with different salt composition are obtained. It is shown that from the nitric-chloride mixed solutions of different composition, when used as extractants neutral oxygen containing compounds, in organic phase goes mainly nitric acid.

New meso-tetrasubstituted porphyrins of interest as heterotopic ligands were synthesized. Substances are investigated by methods of electronic and IR-spectroscopy, МALDI-TOF mass-spectrometry, 1 H NMR spectroscopy and elemental analysis