scholarly journals Simulation and optimization of primary oil and gas processing plant of FPSO operating in pre-salt oil field.

Author(s):  
Ali Allahyarzadeh Bidgoli
2021 ◽  
Vol 30 (5) ◽  
pp. 58-65
Author(s):  
A. Yu. Shebeko ◽  
Yu. N. Shebeko ◽  
A. V. Zuban

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.


Author(s):  
Okto Hebrani ◽  
Sandra Madonna ◽  
Prismita Nursetyowati

<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%.


2020 ◽  
Vol 52 (1) ◽  
pp. 109-118 ◽  
Author(s):  
C. M. Nwachukwu ◽  
Z. Barnett ◽  
J. G. Gluyas

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%).


Author(s):  
Svijetlana Dubovski

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.


2019 ◽  
Vol 42 ◽  
pp. e45293
Author(s):  
Keyvan Dailami ◽  
Hamid Reza Nasriani ◽  
Seyed Adib Sajjadi ◽  
Mohammad Rafie Rafiee ◽  
Justin Whitty ◽  
...  

Even though numerical simulators that use the finite difference approach to model the oil and gas fields and to forecast the field performance are popular in the petroleum industry, they suffer from a very long central processing unit (CPU) time in the complex reservoirs with large number of grids. This issue could be resolved by streamline simulation and it could significantly decrease the runtime. This work explains the the streamline simulation concept and then a real oil field is studied using this technique, the streamline simulation is conducted by a commercial simulator, i.e., FrontSim streamline simulator and then the model was analyzed to find the optimum location of infill wells. In this work, 34 different cases were studied using Streamline simulation method and FrontSim software by considering different arrangement of infill wells. It was concluded that a significant enhancement in the ultimate recovery factor of the oil reservoir could be attained by considering different arrangement of the infill horizontal and vertical wells. It was highlighted that the ultimate recovery factor could be increased significantly, i.e., 13%. Additionally the water cut of the field could be reduced significantly. The novelty of this work is to capture the impact of both vertical and horizontal wells on the ultimate recovery enhancement simultaneously using the concept of streamline simulation and optimization of the field performance using streamline simulation concept.


Author(s):  
Genrietta Rusetskaya ◽  
Alexander Yuryshev

The transition to an innovative way of development in the gas industry is associated with deep, comprehensive processing of natural gas, the start-up of manufacturing products with high added value. In terms of proven reserves of natural gas, Russia ranks number one in the world, the demand is constantly growing both at the domestic market and for exports. Natural and associated petroleum gases of many oil and gas condensate fields in Russia are multicomponent systems that contain a number of components important for the gas chemical industry (ethane, propane, butane, etc.). The most valuable of these is helium. The purpose of this work is to study the problems and prospects for the development of the helium industry in Russia and in the world. Using the methods of economic analysis, generalization and synthesis, the authors estimated the volume of reserves of helium-saturated gases in the fields of the country and Eastern Siberia, the state of helium production, the potential for using helium in the sectors of the Russian economy, the possibility and conditions of competitive entry into the world market. As a result, they detected Russia’s technological inferiority in a number of industries, coming from the low demand for helium, the location of potential consumers far from production centers, the high cost of helium production, the lack of reliable methods of its transportation, etc. At the same time, full-scale helium demand satisfaction of Russian industries is associated with the construction of the Amur Gas Processing Plant. The demand for helium in the countries of the world is constantly growing, an increase in consumption is observed in traditional industries and in the field of innovative technologies. The US dominance in the production of helium is gradually declining due to the depletion of some deposits. The authors make a conclusion that after 2030 Russia can satisfy domestic consumption of helium to bring the industry to an effective economic and environmental level and, while reducing the cost of production, become a major participant in its world market.


Author(s):  
A.Yu. Lagozin ◽  
◽  
Ju.N. Shebeko ◽  
P.A. Leonchuk ◽  
B.A. Klementiev ◽  
...  

To meet the requirements of Federal Law № 123-FZ dated July 22, 2008 «Technical Regulations on fire safety requirements», it is required to determine the estimated time of people evacuation and rescue from the hazardous production facility. To solve this problem, an experimental study of the processes of people evacuation and rescue from the structure of the real gas processing plant was conducted. Evacuation and rescue were carried out from the sections of the pipe rack most remote from the exits from it. The ways for the evacuation and rescue included both horizontal parts and stairs. Rescue was carried out using special stretchers, in which there was a dummy imitating an injured person. The time of evacuation and rescue was determined when moving both down and up, which can take place at the enterprises of the oil and gas industry. The time of movement in different sections was determined by the stopwatches. Based on the measured time and the parameters of the sections along which the movement took place, the movement speeds during evacuation and rescue were found. The evacuation experiments involved untrained people, while the rescue experiments involved professional rescuers. The average movement speeds in the evacuation simulation were as follows: down the stair — 100 m/min, up — 44 m/min, along the horizontal section — 193 m/min. The average movement speeds with a victim during the simulation of rescue were the following: down the stair —22 m/min, up —16 m/min, along the horizontal path — 102 m/min.


2019 ◽  
Vol 58 (6) ◽  
pp. 130-137
Author(s):  
Konstantin P. Uzun ◽  
◽  
Elena A. Chernysheva ◽  
Tatiana A. Kuryakova ◽  
Oksana S. Konovalova ◽  
...  

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.


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