scholarly journals Study of the effect of narrow fractions of disulfide oil on the degree of dissolution of asphalt-resin-paraffin deposits on the heat exchange equipment of the Orenburg gas processing plant

2019 ◽  
Vol 58 (6) ◽  
pp. 130-137
Author(s):  
Konstantin P. Uzun ◽  
◽  
Elena A. Chernysheva ◽  
Tatiana A. Kuryakova ◽  
Oksana S. Konovalova ◽  
...  
Keyword(s):  
Heat Exchange ◽  
Oil And Gas ◽  
Fractional Composition ◽  
Hybrid Structure ◽  
Processing Plant ◽  
Gas Processing ◽  
Mode Of Operation ◽  
Heat Exchange Equipment ◽  
Structured System

Currently, there are a number of unsolved problems in oil and gas processing, one of which is the search for an effective and relatively cheap solvent for asphalt-resin-paraffin deposits. This article discusses the features of asphalt-resin-paraffin deposits, which are a complex structured system with a pronounced core of asphaltenes and a sorption-solvation layer of oil resins (CCE), and features of the asphalt-resinous substances (DIA), which are heterocyclic compounds of complex hybrid structure, in which includes nitrogen, sulfur, oxygen and metals. In the course of the study, the choice of optimal methods for controlling asphalt-resin-paraffin deposits was carried out and the effectiveness of various methods depends on many factors, in particular, on the properties of oil or gas condensate, the mode of operation of the installation, surface roughness and equipment design. The article describes the process of removing already deposited asphalt-resin-paraffin deposits using the most promising chemical method. Both individual solvents and multicomponent compositions are used as remover reagents. In some cases, to increase the efficiency of the solvent is heated or it is served together with the steam. In the process of selecting the solvent, you need to consider that each type of oil will be suitable for a certain type of reagent, there are no universal solvents. This article describes the process of removing asphalt-resin-paraffin deposits, where the supply of reagents occurs through special devices. Various solvents were selected, in the process of research their properties, features, characteristics were studied and a practical study of its declared characteristics and determination of its effectiveness were carried out. As part of this study, the fractionation of disulfide oil was studied according to GOST 2177-99 «Oil products. Methods for determining the fractional composition» and studied the effect of individual fractions on the sediments taken from the walls and tube bundles of heat exchange equipment of the condensate stabilization plants of the Orenburg Gas Processing Plant. The results of the experiments helped to calculate the effectiveness of the solvents taken.

scholarly journals Application of disulfide oil for removal of paraffin deposits on the equipment of condensate stabilization units

2019 ◽  
Vol 81 (3) ◽  
pp. 249-254
Author(s):  
K. P. Uzun ◽  
E. A. Chernysheva ◽  
T. A. Kuryakova ◽  
L. V. Mezhueva
Keyword(s):  
Processing Plant ◽  
Chemical Parameters ◽  
Gas Processing ◽  
Mode Of Operation ◽  
Heat Exchange Equipment ◽  
New Type ◽  
Short Time ◽  
Physical And Chemical ◽  
Instrumental Methods ◽  
Technological Mode

On installation stabilize the condensation of the Orenburg gas processing plant (OGPP), OOO "Gazprom pererabotka" acute problem of deposition of asphalt-resin-paraffin deposits (ARPD) resulting in worse job of heat transfer equipment, asphalt-resin-paraffin deposits build up on the plates and in the bottom of the column stabilization, the formation of pyrophoric compounds, complicating the steaming system in the preparation of the equipment to repair. Currently, water vapor is used to clean the heat exchange equipment from the ARPD at the plant, which adversely affects the technological mode of the stabilization unit and the storage tank Park of stable condensate. In accordance with the technique of chromatographic analysis, the composition of "disulfide oil" obtained at the Orenburg gas processing plant and unstable condensate mixed with oil was determined, physical and chemical parameters were determined. An easy – to-implement Express technique is proposed to determine the solvent capacity of disulfide oil (DO). The technique does not require the use of complex instrumental methods of analysis and mathematical modeling and allows in a short time with minimal cost to determine the solvent capacity. The carried out measures on dissolution of ARPD allows to recommend to use a new type of solvent of ARPD on the basis of disulfide oil. At the same time, the tasks of both the qualified use of this by-product and the increase in the efficiency of equipment cleaning from ARPD will be solved. Disulfide oil is currently pumped into stable condensate, so its injection into expanded condensate will not violate the technological mode of operation of the condensate stabilization unit, which is confirmed by calculations.

The calculation of required fire resistance limits for engineering structures of technological pipe racks at oil and gas processing plants on the basis of an evaluation of the time needed for personnel evacuation and rescue in case of fire

2021 ◽  
Vol 30 (5) ◽  
pp. 58-65
Author(s):  
A. Yu. Shebeko ◽  
Yu. N. Shebeko ◽  
A. V. Zuban
Keyword(s):  
Fire Resistance ◽  
Oil And Gas ◽  
Probabilistic Method ◽  
Processing Plant ◽  
Engineering Structures ◽  
Gas Processing ◽  
Processing Plants ◽  
The One ◽  
In Fire ◽  
Rescue Time

Introduction. GOST R 12.3.047-2012 standard offers a methodology for determination of required fire resistance limits of engineering structures. This methodology is based on a comparison of values of the fire resistance limit and the equivalent fire duration. However, in practice incidents occur when, in absence of regulatory fire resistance requirements, a facility owner, who has relaxed the fire resistance requirements prescribed by GOST R 12.3.047–2012, is ready to accept its potential loss in fire for economic reasons. In this case, one can apply the probability of safe evacuation and rescue to compare distributions of fire resistance limits, on the one hand, and evacuation and rescue time, on the other hand.A methodology for the identification of required fire resistance limits. The probabilistic method for the identification of required fire resistance limits, published in work [1], was tested in this study. This method differs from the one specified in GOST R 12.3.047-2012. The method is based on a comparison of distributions of such random values, as the estimated time of evacuation or rescue in case of fire at a production facility and fire resistance limits for engineering structures.Calculations of required fire resistance limits. This article presents a case of application of the proposed method to the rescue of people using the results of full-scale experiments, involving a real pipe rack at a gas processing plant [2].Conclusions. The required fire resistance limits for pipe rack structures of a gas processing plant were identified. The calculations took account of the time needed to evacuate and rescue the personnel, as well as the pre-set reliability of structures, given that the personnel evacuation and rescue time in case of fire is identified in an experiment.

scholarly journals THE EFFECT OF NOISE ON WORK FATIGUE IN AN OIL AND GAS INDUSTRY

2018 ◽  
Vol 1 (2) ◽  
pp. 109 ◽  
Author(s):  
Okto Hebrani ◽  
Sandra Madonna ◽  
Prismita Nursetyowati
Keyword(s):  
Noise Level ◽  
Oil And Gas ◽  
Process Zone ◽  
Oil And Gas Industry ◽  
Processing Plant ◽  
Main Process ◽  
Sampling Point ◽  
Gas Industry ◽  
Gas Processing ◽  
Sampling Points

<strong>Aim:</strong> The purpose of this study is to determine the effect of noise on work fatigue at Central Processing Plant (CPP) Gundih Completed. Noise is one of the causes of fatigue in the oil and gas industry. <strong>Methodology and Result</strong>: Noise is measured using a Sound Level Meter at 45 sampling points spread across two gas processing zones at CCP Gundih in Cepu is Utility zone and Main Process zone. The noise distribution pattern based on noise level in gas processing field of CPP Gundih made using Surfer 11 software. Measurement of fatigue using the Fatigue Measure Measurement Questionnaire and Subjective Self Rating Test questionnaire from Industrial Fatigue Research Comitte Japan. The results of this study prove that the Utility Zone at the sampling point 35 to 45 has a noise level of 74,229 dBa - 106,285 dBa, point 45 has passed the Noise Decree of Kepmenaker No. 51 of 1999, but overall the sampling point in the Utility zone has passed through Kepmenlh no. 48 in 1996. In the Main Process zone at sampling points 6 to 17 and 30 have passed the standard noise level Kepmenaker no. 51 of 1999 with a noise level of 85.967 dBa to 87.155 dBa and 85.146 dBa. Overall there are 4 sampling points that do not pass the standard noise level of Kepmenlh no. 48 of 1996 and Kepmenaker no. 51,1999 points 25, 26,31 and 33. <strong>Conclusion, significance and impact study: </strong>Noise affects fatigue based on several factors, including noise factor 39%, 32.1% weakening activity factor and physical fatigue factor 28.2%.

scholarly journals The Breagh Field, Blocks 42/12a, 42/13a and 42/8a, UK North Sea

2020 ◽  
Vol 52 (1) ◽  
pp. 109-118 ◽  
Author(s):  
C. M. Nwachukwu ◽  
Z. Barnett ◽  
J. G. Gluyas
Keyword(s):  
Oil And Gas ◽  
Free Water ◽  
Early Carboniferous ◽  
Plant Production ◽  
Column Height ◽  
Hydraulic Fractures ◽  
Processing Plant ◽  
Gas Field ◽  
Gas Processing ◽  
Multiple Reservoir

AbstractThe Breagh Field is in UK Blocks 42/12a, 42/13a and 42/8a. It is a gas field with multiple reservoir intervals within sandstones of the Early Carboniferous Yoredale Formation (equivalent to the Middle Limestone Formation within the Yoredale Group onshore). It was the first and is presently the only field developed within these sandstones, offshore UK. Breagh was discovered in 1997 by well 42/13-2 and proved by development well 42/13a-A1. Its crest is at 7110 ft TVDSS (true vertical depth subsea), marked by the unconformity between the base Zechstein and the subcropping Yoredale Formation. It has a free water level at 7690 ft TVDSS, a maximum column height of 510 ft and a field extent of 94 km2. Breagh was developed using ten wells from a 12 slot normally unattended platform; five of the wells have been stimulated by hydraulic fractures with proppant injection. The unprocessed gas flows through a 110 km 20-inch diameter pipeline to the Teesside Gas Processing Plant. Production started in 2013, reached a peak rate of 150 MMscfgd in 2014 and, by the end of 2018, had produced 140 bcf. The field is operated by INEOS Oil and Gas UK Ltd (70%) with partner ONE-Dyas B.V. (30%).

Gathering Systems and Processing Facilities Risk Analysis

2014 ◽  
pp. 218-246
Author(s):  
Svijetlana Dubovski
Keyword(s):  
Natural Gas ◽  
Oil And Gas ◽  
Fluid Composition ◽  
Processing Plant ◽  
Gas Processing ◽  
Pipeline Networks ◽  
Production Wells ◽  
Oil And Natural Gas ◽  
Plant Storage

Gathering system is defined as one or more segments of pipeline, usually interconnected to form a network that transports oil and natural gas from the production wells to one or more production facilities, gas processing plant, storage facility, or a shipping point. There are two types of pipeline networks: radial and trunk system. Produced well fluids are often complex mixtures of the liquid hydrocarbons, gas, and some impurities that can have detrimental effects on the integrity of the gathering pipelines. It is necessary to eliminate most of the impurities before oil and natural gas can be stored and sold. Complexity of the processing facility depends on the treated fluid composition. Environmental impacts during the oil and gas transportation and processing phase will cause long-term habitat changes. To minimize that, it is very important to implement appropriate activities across the designing, construction, operational, and decommissioning phases.

scholarly journals Research of variable characteristics of heat exchange equipment

2019 ◽  
Vol 114 ◽  
pp. 07001
Author(s):  
Tatyana Rafalskaya ◽  
Valery Rudyak
Keyword(s):  
Heat Exchanger ◽  
Heat Exchange ◽  
Heat Exchangers ◽  
Variable Parameter ◽  
Simulation Method ◽  
Operating Modes ◽  
Mode Of Operation ◽  
Heat Exchange Equipment ◽  
Large Systems ◽  
Simulation Results

Heat exchangers used in various industries, most often work in conditions of variable flows and temperatures. At the same time, the existing theories of calculation of heat exchanger modes are based on the use of constant dimensionless parameters in any mode of operation. The purpose of this work is to obtain dependencies to determine the effect of coolant temperatures on the variable parameter of the heat exchanger. Using the simulation method, dependencies were found that describe the change in the heat exchanger parameter which made it possible to obtain a general formula for the change in the heat exchanger parameter at varying coolant temperatures. To test the applicability of the existing relations describing the change in the heat exchanger parameter and the formula obtained, a large number of heat exchangers were calculated in variable operating modes. Comparison with the simulation results showed that the ratios of the known theories of heat exchangers do not work in all modes and their application can lead to significant errors. A formula has been obtained allows one to find the effect of coolant temperatures on the variable parameter of the heat exchanger. The formula can be used to predict the modes of large systems.

Sign in / Sign up

Export Citation Format

Share Document