DOI: 10.24412/2076-6785-2021-5-72-75
Abstract
Due to the stricter requirements for oil transferred for transportation by the main pipeline or processing, as well as high background values of hydrogen sulphide in the oils of the fields of Udmurtia, the selection of effective reagents was made. Laboratory studies of 6 grades of hydrogen sulphide neutralizers with different active bases on commercial oils of the preparation facilities of the Kiengopskoye, Mishkinskoye and Gremikhinskoye fields were carried out in accordance with the requirements of Rosneft Oil Company. It was determined that all six tested grades of reagents can achieve a hydrogen sulphide content of less than 20 million-1. The most effective grades of hydrogen sulphide neutralizers
have been established in the context of preparation facilities. As part of the tests, the absence of the influence of reagents in the studied dosages on the content of chloride salts in oil was confirmed.
Materials and methods
Laboratory studies of 6 grades of hydrogen sulphide neutralizers on commercial oils of the preparation facilities of the Kiengopskoye, Mishkinskoye and Gremikhinskoye fields were carried out in accordance with the requirements of Rosneft Oil Company. The results are in the form of figures and conclusions.
Keywords
hydrogen sulphide neutralizer, EAEU TR 045/2017, hydrogen sulphide neutralization, chemical method for reducing hydrogen sulphide in oil, oil, hydrogen sulphide
DOI:10.24411/2076-6785-2020-10086
Abstract
The task of this work is to study the effect of a reagent of various concentrations on the physical and chemical properties of high-viscosity oil and to select the reagent with the most effective indicators for reducing the viscosity in carbonate reservoirs of medium carbon. The results of the study showed that the reagent was adsorbed on the structure-forming components of the oil and weakened the interaction between them, which led to a decrease in the viscosity of the oil. The greatest reduction in oil viscosity was achieved by introducing 2% of the reagent into the oil emulsion (a decrease in viscosity by 51 mPa * s or 6%), and 3% of the reagent into the dehydrated oil (a decrease in viscosity of 32 mPa*s or 4.9%).
Materials and methods
The gas chromatography method using the "TotalChrom" software package is used as a separation method based on the distribution of the substance between the mobile and stationary phases. SARA analysis was
used to separate the oil into components under laboratory conditions.
Keywords
high-viscosity oils, reagent, reduced viscosityr
Based on individual composition of saturated and aromatic hydrocarbons, the paper presents geochemical properties of oil from 20 different fields in the central area of Siberian craton. The study reveals that initial organic matter of observed crude oils was formed in marine environment of high salinity. By their geochemical properties, crude oils are divided into two groups: group one refers to Riphean sediments of Baykitskaya petroleum-bearing region (PBR) and group two refers to Vendian-Cambrian sediments of Katangskaya and Nepsko-Botuobinskaya PBR.
With the introduction of Euro-5 emission standard requirements applying to sulfur content in automobile gasolines with the norm being no more than 10ppm, the requirements relating to total sulfur content in liquefied petroleum gases used as fuel for motor vehicles or as raw materials for high octane additive synthesis for automobile gasolines (MTBE or alkylate) have become dramatically more stringent. With processes of oil conversion becoming deeperand introduction of the pyrolysis process and the coking process for heavy high sulfur petroleum cuts, the sulfur content in the hydrocarbon gases released and gasoline cuts has drastically increased and resulted in increased volume of generated sulfuric alkaline discharges in the refinery. In this context, it has now become more topical to equip pyrolysis and coking facilities with units for local decontamination of sulfuric alkaline discharges before they are dumped into the all-plant sewerage system.
Article is devoted development Achimov gas-condensate deposits, in respect of which is revealed the problem of paraffin deposits on the walls of pipelines and heat exchangers. The basic methods of dealing with the processes of paraffinotherapy, on the basis of analysis with special focus on the use of depressants were considered. Special attention was paid to interaction of the dispersant additives and water. In work were revealed results of experimental-industrial tests of the composition of depressor and dispersant additives and their positive and negativeeffect on the processes of transportation and processing of Achimov gas condensate deposits.
This article described the problem of the separation of multi-component solution by adsorption using molecular and sieve properties of zeolites. The technology of transport and production of this issue isextremely important due to the fact that natural gas production at the GPP (installation of complex preparation) with methanol's addition, and in large volume it becomes as inhibitor hydrates formation [1]. Methanol, water and liquid hydrocarbons form an azeotrope whichis separated as a separate faction on the main compressor station.
The article presents the study results of aftereffect of the adhesive additive "Adgezolin" on the component composition and dispersion of the oxidized bitumen production by PSC"TAIF-NK".
Properties of hydrocarbon fractions for phase change simulation are uncertain and in most cases are taken from datasets (so-called libraries). Better way is to perform a TBP experiment toacquire molecular weights and densities and calculate the rest of the properties from these two. Dataset properties could turn up being not fit for a studied fluid, and experiments are expensive and time consuming. At the same time there is alot of experimental TBP results performed in Russian Federation with experimentally determined molecular weights and densities of fractions. Method of hydrocarbon fractions' molecular weightsand densities calculation is proposed, based on a statistical similarity of similar reservoir fluids.
In the article applicability of several non-engine methods for express-control of octane numbers was investigated. A new combined chromatodensitometry method was introduced, which allows make a rapid determination of octane numbers without specific equipment. Results of precision program with introduced method and standard engine methods for different types of gasoline was presented in tables. A universal formula for oil-products density recalculation was obtained by means of standard density-temperature tables correlation analysis.
In recent years, scientists have been actively developing integrated technologies, which consist of the thermal methods of reservoir stimulation with wave processes. However, the effect of microwave radiation on the oil and bitumen systems is not studied enough, that requires a more in-depth scientific research in this area. The efficiency of extraction of high molecular hydrocarbons from bituminous sands at microwave exposure is evaluated. The features of the element composition, component, structural-group and hydrocarbon composition of bitumen changes depending on their chemical types and modes of microwave exposure are found out. New data on the change in the structure and properties of asphaltenes under microwave exposure and the composition of the liquid products of their destruction is gained.
In recent years, scientists have been actively developing integrated technologies, which consist of the thermal methods of reservoir stimulation with wave processes. However, the effect of microwave radiation on the oil and bitumen systems is not studied enough, that requires a more in-depth scientific research in this area. The efficiency of extraction of high molecular hydrocarbons from bituminous sands at microwave exposure is evaluated. The features of the element composition, component, structural-group and hydrocarbon composition of bitumen changes depending on their chemical types and modes of microwave exposure are found out. New data on the change in the structure and properties of asphaltenes under microwave exposure and the composition of the liquid products of their destruction is gained.
The researches of a filled bitumen paint and varnish materials were carried out in limited scales. It was solving generally narrowpurpose problems of consumer character. The development of scientific and practical bases of processes of a filled bitumen insulating materials with the entering in their structure the technogenic powder waste of petrochemistry, oil refining it was not carried out.
Materials and methods
Pigmented bitumen insulating materials, technogenic powder waste of petrochemistry and oil refining, bitumens,
methods by definition physic mechanical and adhesive ïðî÷íîñòíûõ properties, linear copolymers, thermoplastic pitches.
Results
In view of that applicability of bitumens gets the paramount urgency in productionof sheetings because of many
valuable properties (water repellency, water resistance, to protective properties from the high-concentrated acids and alkalis) there is obvious a need expansion of scopes of bitumen materials at the expense of increase in ways and methods of regulation their physic mechanical and adhesive properties.
Ñonclusions
On the basis of results of the carried-out researches in the field of studying of interaction of refractory bitumens with metals of variable valency — fillers pigments, and also the revealed regularities of interaction and ways of
combination of entered modifiers with a film-forming basis of the received refractory bitumens, it is theoretically
possible to assume that the developed structures bitumen — polymeric inhibited materials can be put on crude from
products of corrosion of a surface of metal designs. Carrying out physical and chemical updating of refractory bitumens promotes strengthening of mechanical durability at the expense of regulation of colloidal structure, assumes use as a film-forming basis the special bitumens received in various conditions, and also production of long-term insulating
materials corresponding state standard specifications 5631 and 312, capable to maintain cyclic atmospheric loadings
without loss mechanical, adhesive and waterproof properties.
This document discussed problems of roads pavement connected with application bituminous cements that have low physical mechanical properties and irresponsive requirements of climatic factors our region. Besides authors in this report considers methods of solution this problems. Similarly presented data laboratory researches of polymer bituminous cements and cationic emulsions that consisting of modified bitumens and emulsifying composition.
Materials and methods
Bitumen BND 90/130 of Angarsk oil refineries, styrol-butadien-styrol «DST-30-01», industrial oil, sand, broken stone.Penetration, ductility, softening temperature, shatter point, elasticity, compressive resistance, water resistance.
Results
As a result of carry out research was received stabilized polymer-bitumen emulsion on basis of modified bitumen. Besides was received and carry out research organomineral blends on basis of polymer-bitumen emulsions.
Ñonclusions
The organomineral blends on basis of received polymer-bitumen emulsions will be increase service life road pavements on 1,5–2 years.
In the present article was conducted to study the pyrolysis process control hydrocarbon electromagnetic field microwave pyrolysis gasoline with examples of raw materials and propane-butane mixture. The study of this control was carried out at different temperatures, ratios of «steam-raw», loads of raw materials and other parameters of the pyrolysis process. To carry out the processes of pyrolysis gasoline and propane-butane stoves used stamps «F-120» and «F-130», «Kstovo Refinery» (JSC «Sibur-Neftekhim»). It is shown that the incorporation of microwave devices in the general technological process of pyrolysis increases the yield of target and reduces the side products.
Researched a number of highly effective ammonia-based antihydrate ingibitors. It is shown that the addition of acetic acid in the system leads to even greater temperature depression.
During laboratory tests of oil-water emulsion from the Penjachinsky fieldofJSCElabuganeft,highlyeffectivemultifunctioncompositeemulsionbreakerSTH-DP-11Ì was designed taking into account crude-oil emulsion properties. As a result of fieldtestsithasbeendetermined,thatattheexpenseofappearance of a synergism of the action of different components of the designed composite, substitution of basic compounds on STH-DP-11Ì allowed to stabilize water content and salt content in oil-water sludge entering oil treatment unit, and also to meliorate quality of commercial water. Application of the produced compound provides indicators of water and salt content in tank oil according to requirements of GOST.