In the presented work, the content of iron and dissolved oxygen in the transported water of the “Astrakhan-Mangyshlak” pipeline and the applicability of these indicators as measure of corrosion processes are studied. From the results of studies, it follows that the oxygen concentration in water is decreased along the length of the water pipeline. The main amount of dissolved oxygen is consumed for the processes of bio- and electrochemical corrosion of the inner surface of the water pipeline. The iron content in the source water is varied in the range of 0,1...0,5 mg/l. An increase in the concentration of iron in the transported water along the length of the water pipeline indicates corrosion processes and the removal of iron in the form of hydroxide. The distribution of the corrosion inhibitor along the length of the water pipeline was studied based on the concentration of polyphosphates in water samples and the presence and concentration of phosphoruscontaining compounds in the samples of corrosive deposits. The concentration of polyphosphates along the route of the water pipeline is decreased, due to their consumption for the formation of phosphate compounds with polycovalent cations and the formation of a protective film on the inner surface of the water pipeline. The identification of phases on the electron diffraction patterns and elemental analysis of corrosion deposits taken from template samples in different sections of the water pipeline also showed the presence of phosphoruscontaining compounds in various concentrations.

The article is devoted to the problem of determining the position of pipe defects in the main pipeline, identified using in-line diagnostics (IDD) data and correlating them with possible sources. Data on defects can be obtained using IDD, spatial referencing is performed using GIS technologies (linear coordinate system tools), and the sources of defects (hazardous natural processes) are de termined using Earth remote sensing tools. 

The article presents the results of a study of the effectiveness of the new generation UNIKO-N-60 reagent and its modifications which do not contain salts of quaternary ammonium compounds (QAC), for inactivation of sulfate-reducing bacteria (SRB) in the pumped liquid at the ASHIT Oil and Gas Production Department-1 of JSC «Belkamneft» named by A.A. Volkov.
Comparative data have been obtained on the assessment of the effectiveness when changing the dosage of the reagent on SRB cultures of two field facilities of the UKPN ASH IT and RVS-13 UKPN ASHIT.
The obtained data indicate that the samples of the UNIKO-N exhibit high efficiency. The suppression of the growth of SRB by the samples of UNIKO-N occurs at a low dosage of 5 g/m3. The effectiveness of the reagent was not changed when the dosage was increased to 100 g/m3. Their higher efficiency is shown in comparison with the base reagent.
It is noted that reagents of the UNIKO-N series based on high molecular weight polymer compounds have biocidal activity against all types of bacteria, including SRB, viruses and fungi, while simultaneously exhibiting the properties of corrosion inhibitors. It has been established that UNIKO-N polymer compositions protect St 3 steel from general corrosion in mineralized water in the absence of hydrogen sulfide at a minimum dosage of 0,4 to 4,0 mg/l. Modifications of the UNIKO-N reagent have been developed and tested, having different freezing points, concentrations of active components and various functional additives, depending on the needs of a particular consumer.
The usage of reagents of new generation for inactivation of SRB in petroleum production engineering not containing in its composition QAC permits to eliminate their negative influence on state of equipment and pipelines.

The requirements of the Federal Laws for hazardous industrial oil and gas facilities, information about the construction control and its application, the structure of the chief engineer service and the structure of the corrosion protection service as part of it are described.
The concepts of technical inspection and technical diagnosis, as well as the timing and features of its implementation are given. The features of non-destructive testing, technical diagnosis and repair of equipment operated in hydrogen sulfide-containing environments, including weld failure, defects of shell-and-tube heat exchangers are shown. Methods and means of protecting steel equipment from environments containing hydrogen sulfide are described including:
- corrosion inhibitors (general information, for hydrogen sulfide-containing media, for glycol-containing media, for amine-containing media);
- protective coatings (general requirements for coatings, polymeric, inorganic, metallic, recommendations for effective coatings);
- electrochemical protection (methods and limitations of application, peculiarities of destruction and protection of main gas pipelines);
- technological methods of protection (examples of common manuf acturing mistakes).
Methods and equipment to control corrosion in hydrogen sulfide-containing media are shown, including a description of new devices.
Types of corrosion tests of samples of materials and methods of protection in environments containing hydrogen sulfide are described, including: laboratory, pilot, production and special tests