scholarly journals High-Pressure Hydrogen Sulfide Experiments: How Did Our Safety Measures and Hazard Control Work during a Failure Event?

Safety ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 15 ◽  
Author(s):  
Kayode I. Adeniyi ◽  
Herman H. Wan ◽  
Connor E. Deering ◽  
Francis Bernard ◽  
Molly A. Chisholm ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Oil And Gas ◽  
Control Strategies ◽  
Sewage Treatment ◽  
Detection Methods ◽  
Safety Standards ◽  
Hazard Control ◽  
Failure Event ◽  
Ring Seal ◽  
Control Work

Hydrogen sulfide (H2S) is a hazardous, colorless, flammable gas with a distinct rotten-egg smell at low concentration. Exposure to a concentration greater than 500 ppm of H2S can result in irreversible health problems and death within minutes. Because of these hazards, operations such as oil and gas processing and sewage treatment that handle or produce H2S and/or sour gas require effective and well-designed hazard controls, as well as state-of-the-art gas monitoring/detection mechanisms for the safety of workers and the public. Laboratories studying H2S for improved understanding must also develop and continually improve upon lab-specific safety standards with unique detection systems. In this study, we discuss various H2S detection methods and hazard control strategies. Also, we share our experience regarding a leak that occurred as a result of the failure of a perfluoroelastomer O-ring seal on a small stirred autoclave vessel used for studying H2S hydrate dissociation/formation conditions in our laboratory, and discuss how our emergency response plan was activated to mitigate the risk of exposure to the researchers and public.

Destruction of Parts and Structures of Oil and Gas Equipment of the Wells in Hydrogen Sulfide-Containing Media

2018 ◽  
pp. 61-65
Author(s):  
R.F. Mambetov ◽  
◽  
V.M. Kushnarenko ◽  
E.V. Ganin ◽  
◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Oil And Gas

scholarly journals Historical Assessments of Inorganic Pollutants in the Sinkhole Region of Winkler County, Texas, USA

2021 ◽  
Vol 13 (13) ◽  
pp. 7513
Author(s):  
Joshua Lozano ◽  
Joonghyeok Heo ◽  
Mijin Seo
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Water Contamination ◽  
Oil And Gas ◽  
Anthropogenic Activities ◽  
Inorganic Pollutants ◽  
Safety Standards ◽  
The Public ◽  
West Texas ◽  
Contamination Levels

The purpose of this study was to evaluate the public water contamination levels of Winkler County, in West Texas. With water scarcity becoming more prevalent in arid climates like West Texas, it is important to ensure the water quality in these areas. The Dockum and Pecos Valley aquifers were analyzed for inorganic pollutants that could inhibit the water. The parameters such as copper, lead, arsenic, nitrate, chloride, and chromium level reports were provided from 1972 to 2018 to analyze and compare to other studies such as the ones conducted in the Midland/Odessa area. The results were compared to the Environmental Protection Agency (EPA) safety standards, and conclusions were made for the safety consumption of water within the county. We found that inorganic pollutants resulted mainly from the mobilization of the contaminant from anthropogenic activities such as chemical fertilizers, oil and gas developments. This research provides important information for inorganic pollutants in the sinkhole region of Winkler County and contributes to understanding the response to the aquifers. The significance of water quality in West Texas is now more important than ever to ensure that everyone has clean drinking water.

Integrated technology for conditioning low-mineralized cold ground water

2021 ◽  
pp. 4-9
Author(s):  
А.В. Селюков
Keyword(s):  
Drinking Water ◽  
Hydrogen Sulfide ◽  
Oil And Gas ◽  
Residual Concentration ◽  
Stabilization Treatment ◽  
Integrated Technology ◽  
Main Work ◽  
Treatment Facilities ◽  
Low Efficiency ◽  
Iron Manganese

Сообщается о новой комплексной технологии кондиционирования холодных маломинерализованных подземных вод. Технология разрабатывалась для целей хозяйственно-питьевого водоснабжения нефтегазоносных районов Тюменского Севера. При благополучном соотношении ресурсов пресной воды и фактического объема водопотребления в этом регионе России вопрос питьевого водоснабжения из подземных горизонтов остается острым из-за проблемного качества воды и низкой эффективности очистных сооружений. Технология предназначена для очистки от железа, марганца, сероводорода и обеспечивает стабилизационную обработку воды. Основные работы, включавшие лабораторные исследования и пилотные испытания, выполнены в период 2001–2020 годов. На основе разработанных технологических решений построены и успешно эксплуатируются водопроводные очистные сооружения в городах Ноябрьске (75 тыс. м3/сут, 2006 г.) и Новом Уренгое (65 тыс. м3/сут, 2007 г.). Дополнительные испытания технологии, проведенные в Ханты-Мансийске и Комсомольске-на-Амуре, подтвердили ее эффективность. Технология предусматривает применение в качестве основных реагентов пероксида водорода и перманганата калия для окисления примесей воды, а также щелочного реагента для корректировки рН и стабилизационной обработки. Для обеспечения требований стандарта ВОЗ по содержанию железа и марганца дополнительно может использоваться флокулянт. Обобщены данные по составу подземных вод, использованных для испытаний, и на их основе определена рекомендуемая область применения разработанной технологии. Приведена принципиальная технологическая схема кондиционирования холодных маломинерализованных подземных вод, учитывающая 15-летний опыт эксплуатации построенных станций, а также современные решения по дозированию и смешению реагентов. Указано, что данная технология обеспечивает также частичное снижение содержания кремния в очищенной воде (до 30%). Разработанная технология позволяет получать стабильную питьевую воду при нормативном остаточном содержании железа, марганца и сероводорода. An advanced integrated technology for conditioning low-mineralized cold groundwater is presented. The technology was developed for the purpose of supplying drinking water to the oil and gas-bearing regions of the Tyumen North. With a favorable ratio of fresh water resources and the actual volume of water consumption in this region of Russia, the issue of drinking water supply from underground aquifers remains acute due to the problematic water quality and low efficiency of the treatment facilities. The technology is intended for removing iron, manganese, hydrogen sulfide and providing for the stabilization treatment of water. The main work including laboratory studies and pilot tests was carried out in the period 2001–2020. On the basis of the developed process solutions, water treatment facilities have been built and successfully operated in the cities of Noyabrsk (75 thousand m3/day, 2006) and Novy Urengoy (65 thousand m3/day, 2007). Additional tests of the technology carried out in Khanty-Mansiisk and Komsomolsk-on-Amur confirmed its effectiveness. The technology involves using hydrogen peroxide and potassium permanganate as the basic chemicals for the oxidation of water pollutants, as well as using an alkaline chemical for pH adjustment and stabilization treatment. To meet the requirements of the WHO standard for the concentrations of iron and manganese, an additional flocculant can be used. The data on the composition of groundwater used for testing are summarized, and on their basis the recommended area of ​​application of the developed technology is determined. The basic process flow scheme of conditioning low-mineralized cold groundwater in view of 15 years of experience in operating the existing facilities, and of advanced solutions for dosing and mixing of chemicals, is presented. It is indicated that the technology also provides for a partial reduction in the silicon concentration in purified water (up to 30%). The developed technology ensures stable drinking water with a standard residual concentration of iron, manganese and hydrogen sulfide.

scholarly journals Removal of Hydrogen Sulfide (H2S) Using MOFs: A Review of the Latest Developments

2020 ◽  
Vol 2 (1) ◽  
pp. 27
Author(s):  
Amvrosios G. Georgiadis ◽  
Nikolaos D. Charisiou ◽  
Ioannis V. Yentekakis ◽  
Maria A. Goula
Keyword(s):  
Hydrogen Sulfide ◽  
Oil And Gas ◽  
Great Promise ◽  
New Developments ◽  
Specific Heats ◽  
Gas Streams ◽  
Long Time ◽  
Metal Organic ◽  
Bed Stability ◽  
Made In

The removal of hydrogen sulfide (H2S) from gas streams with varying overall pressure and H2S concentrations is a long-standing challenge faced by the oil and gas industries. The present work focuses on H2S capture using metal–organic frameworks (MOFs), in an effort to shed light on their potential as adsorbents in the field of gas storage and separation. MOFs hold great promise as they make possible the design of structures from organic and inorganic units, but also, they have provided an answer to a long-time challenging issue, i.e., how to design extended structures of materials. Moreover, the functionalization of the MOF’s surface can result in increased H2S uptake. For example, the insertion of 1% of a fluorinated linker in MIL-101(Cr)-4F(1%) allows for enhanced H2S capture. Although noticeable efforts have been made in studying the adsorption capacity of H2S using MOFs, there is a clear need for gaining a deeper understanding in terms of their thermal conductivities and specific heats in order to design more stable adsorption beds, experiencing high exothermicity. Simply put, the exothermic nature of adsorption means that sharp rises in temperature can negatively affect the bed stability in the absence of sufficient heat transfer. The work presented herein provides a detailed discussion by thoroughly combining the existing literature on new developments in MOFs for H2S removal, and tries to provide insight into new areas for further research.

scholarly journals THE OXIDATION PROCESS OF HYDROGEN SULPHIDE WITH OXYGEN OF AIR, WITH PRODUCTION OF ELEMENT SULFUR

2019 ◽  
Author(s):  
Н.Д. Айсунгуров ◽  
П.С. Цамаева ◽  
А.А. Эльмурзаев ◽  
С.С. Юсупов
Keyword(s):  
Hydrogen Sulfide ◽  
Oil And Gas ◽  
Oxidation Process ◽  
Atmospheric Oxygen ◽  
Oil And Gas Industry ◽  
Liquid Hydrocarbon ◽  
Huge Number ◽  
Gas Industry ◽  
Hydrocarbon Production ◽  
Solid Catalysts

Экономической составляющей нашей страны была и остается топливно-энергетическая промышленность, в частности нефтегазовая отрасль промышленности. Снижение объемов добычи жидких углеводородов из-за истощения огромного количества эксплуатируемых скважин заставляет искать пути решения возникающих проблем. Одним из решений такого рода проблем видится увеличение числа эксплуатации нефтегазовых скважин, которые сталкиваются с проблемами из-за высокого содержания в составе вредных компонентов, в частности сероводорода. Ведущие нефтяные компании имеют свое видение решения этих проблем. Исследования ученых в этой области предлагают свои решения подобного рода вопросов. Одним из таких предложений является разработка технологии утилизации сероводорода путем окисления газов кислородом воздуха на твердых катализаторах. В статье предлагается метод выделения серы из высококонцентрированного сероводородсодержащего газа в кипящем слое катализатора. Авторами проведены испытания предлагаемого метода на опытной установке и даны рекомендации по проведению такого рода исследований. The economic component of our country has been and remains the fuel and energy industry, in particular the oil and gas industry. The decline in liquid hydrocarbon production, due to the depletion of a huge number of exploited wells, makes us look for ways to solve the problems that arise. One of the solutions to this kind of problems seems to be an increase in the number of oil and gas wells that encounter problems due to the high content of harmful components, in particular hydrogen sulfide. Leading oil campaigns have their own vision for solving these problems. Researches of scientists in this area offer their solutions to this kind of issues. One of such proposals is the development of technology for the utilization of hydrogen sulfide by oxidizing gases with atmospheric oxygen on solid catalysts. The article proposes a method for the separation of sulfur from highly concentrated hydrogen sulfide-containing gas in a fluidized bed of catalyst. The authors tested the proposed method in a pilot plant and made recommendations for conducting this kind of research.

scholarly journals Dynamic Efficiency Analysis of an Off-Shore Hydrocyclone System, Subjected to a Conventional PID- and Robust-Control-Solution

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2379 ◽  
Author(s):  
Petar Durdevic ◽  
Zhenyu Yang
Keyword(s):  
Robust Control ◽  
Real Time ◽  
Oil And Gas ◽  
Control Structure ◽  
Control Strategies ◽  
Direct Method ◽  
Water Concentration ◽  
Current Feedback ◽  
Oil Concentration ◽  
Offshore Oil And Gas

There has been a continued increase in the load on the current offshore oil and gas de-oiling systems that generally consist of three-phase gravity separators and de-oiling hydrocyclones. Current feedback control of the de-oiling systems is not done based on de-oiling efficiency, mainly due to lack of real-time monitoring of oil-in-water concentration, and instead relies on an indirect method using pressure drop ratio control. This study utilizes a direct method where a real-time fluorescence-based instrument was used to measure the transient efficiency of a hydrocyclone combined with an upstream gravity separator. Two control strategies, a conventional PID control structure and an H ∞ robust control structure, both using conventional feedback signals were implemented, and their efficiency was tested during severely fluctuating flow rates. The results show that the direct method can measure the system’s efficiency in real time. It was found that the efficiency of the system can be misleading, as fluctuations in the feed flow affect the inlet concentration more than the outlet oil concentration, which can lead to a discharge of large oil quantities into the ocean.

scholarly journals Study of the Installation Process of the Subsea Tree Passed Through the Splash Zone

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1014
Author(s):  
Yufang Li ◽  
Honglin Zhao ◽  
Ning Xu ◽  
Xiaoyu Wang ◽  
Deguo Wang
Keyword(s):  
Wave Height ◽  
Oil And Gas ◽  
Splash Zone ◽  
Safety Standards ◽  
Engineering Software ◽  
Safe Production ◽  
Operational Safety ◽  
Offshore Oil And Gas ◽  
Marine Engineering ◽  
Offshore Oil

The subsea tree is one of the critical pieces of equipment in the subsea production system, and its installation is related to the safe production of offshore oil and gas. Due to the differences in the form of the structures, the speed of entering the water, the marine environment, and other factors, the process of the structure entering the water is exceedingly complicated. During the engineering installation, the most dangerous phase involves the structure passing through the splash zone. Based on the theory of the movement of the subsea tree passing through the splash zone, Lingshui 17-2 subsea tree installation was analyzed with the marine engineering software OrcaFlex, and a sensitivity analysis of the lowering of the subsea tree was performed. During the splash zone phase, the wave height had the highest impact on the subsea tree, affecting the horizontal offset and cable load, which may lead to the oil tree capsizing and cable breakage. Furthermore, the velocity only affected the horizontal offset, and the overall effect was not noticeable. The operational safety window for the subsea tree installation was established according to the operational safety standards. Therefore, the recommended lowering speed was 0.50 m/s, while the flow velocity should not exceed 1.50 m/s, and the wave height should not be higher than 4.5 m.

BARRAMUNDI–1: A CASE HISTORY IN FRACTURE ANALYSIS AND SEAL INTEGRITY IN THE BASS BASIN

2001 ◽  
Vol 41 (1) ◽  
pp. 71
Author(s):  
R.P. Crist ◽  
J.R. Conolly ◽  
L.D. Robinson
Keyword(s):  
Shear Wave ◽  
Oil And Gas ◽  
Detection Methods ◽  
Stress Axis ◽  
Seal Integrity ◽  
Late Tertiary ◽  
Potential Reservoir ◽  
Wave Event ◽  
Background Gas ◽  
Coal Measures

Barramundi–1 was drilled to test a faulted rollover structure with thick potential reservoir sands in the top Eocene Eastern View Coal Measures. A structure-wide AVO anomaly was mapped corresponding to these sands and this suggested the presence of a valid hydrocarbon trap.Barramundi–1 reached a total depth of 2,100 m on October 2 1999 after penetrating a thick reservoir sand sequence in the Eastern View Coal Measures within the T27/P permit operated by GLOBEX Far East.No significant hydrocarbons were encountered. Log analysis showed that large borehole breakouts occur below 1,400 m in thick Eastern View sands and background gas was observed to decrease. Dipole Sonic Imager (DSI) logs also showed that the amplitude of the fast shear wave event was attenuated from 1,250–1,450 m and was erratic in amplitude below this depth.The Compressional Velocity (Vp) to Shear Wave Velocity (Vs) ratios showed large variations over short intervals in the break out zones.It was concluded that Barramundi–1 failed to contain commercial hydrocarbons due to the seal failure caused by late Tertiary movement which has manifested itself both as fractures and faults, with a principal stress axis that trends northeast–southwest.An AVO anomaly mapped across the Barramundi structure has probably been caused by a combination of lithological and stress anisotropy in thick Eastern View sands at depths below 1,500 m, as observed by ovalisation occurring on the Caliban log analysis.It was concluded that the stresses would add to anisotropic effects in the rocks and consequently direct hydrocarbon detection methods such as AVO have to be used with caution.The central Bass Basin has generated both oil and gas. More wells need to be analysed using seal integrity methods in order to fully determine the reason for the failed trapping mechanism at Barramundi. This could eventually lead to a fault seal model that would allow exploration to successfully continue.

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