The Experts below are selected from a list of 135 Experts worldwide ranked by ideXlab platform

John C Spinosa - One of the best experts on this subject based on the ideXlab platform.

Gerald J Kost - One of the best experts on this subject based on the ideXlab platform.

Ofelia De Queiroz Fernandes Araujo - One of the best experts on this subject based on the ideXlab platform.

  • supersonic separator for cleaner offshore processing of natural gas with high Carbon Dioxide Content environmental and economic assessments
    Journal of Cleaner Production, 2019
    Co-Authors: Lara De Oliveira Arinelli, José Luiz De Medeiros, Alexandre Mendonca Teixeira, Ofelia De Queiroz Fernandes Araujo
    Abstract:

    Abstract Supersonic separators offer a cleaner offshore processing of natural gas with Carbon Dioxide Content from deep-water oil-gas fields. Conventional offshore gas processing comprises water dew-point adjustment via glycol-absorption, hydroCarbon dew-point adjustment via Joule-Thomson expansion, and Carbon Dioxide removal via membrane-permeation. Alternative processing contemplates the use of supersonic separators for adjusting gas dew-points followed by Carbon Dioxide capture via membrane-permeation (so-called SS-MP scheme); or for adjusting gas dew-points and also accomplishing Carbon Dioxide abatement (so-called SS-SS scheme). The conventional process is environmentally and economically compared with SS-MP and SS-SS for application in offshore rigs treating raw gas (44%mol Carbon Dioxide) to produce exportable fuel-gas (≈20%mol Carbon Dioxide), while dispatching Carbon Dioxide rich fluid (≈75%mol Carbon Dioxide) for enhanced oil recovery in the oil-gas field. Results show that SS-MP requires 7.8% less power than the conventional process. Moreover, implementing SS-SS deepens the advantage against the conventional operation because SS-SS produces Carbon Dioxide rich fluid at high-pressure, requiring much less compression power for enhanced oil recovery than the low-pressure permeate from membrane-permeation. SS-SS has lowest Carbon emission (−28.3%), lowest power consumption (−21.3%) and best economic performance: lowest manufacturing cost and lowest compressor investment. Thus, SS-SS is the overall best and cleanest solution, with highest 20 years net value (+860 MMUSD) and lowest environmental impact.

  • natural gas dehydration by molecular sieve in offshore plants impact of increasing Carbon Dioxide Content
    Energy Conversion and Management, 2017
    Co-Authors: Myrlla G R S Santos, José Luiz De Medeiros, Leilane M S Correia, Ofelia De Queiroz Fernandes Araujo
    Abstract:

    Abstract Dehydration is a critical operation in natural gas conditioning as it reduces the potential for corrosion, hydrate formation and freezing in process equipment and transportation pipelines. Water dew point adjustment is particularly challenging in the remote ultra-deepwater natural gas reserves of the Brazilian Pre-Salt fields due to their very high Carbon Dioxide Contents – from 30% up to 90% in raw natural gas – which is a consequence from the Carbonaceous rock of the reservoir structure and long term elevation of Carbon Dioxide Content due to its injection for early enhanced oil recovery. Under this scenario, the study evaluates the impact of the Carbon Dioxide Content of the natural gas on the performance of water dew point via water adsorption on 4 A Zeolite molecular sieve beds. Process simulation with adsorption simulator Adsim (Aspen Technology, Inc), at varying operation pressures and Carbon Dioxide Contents in raw natural gas, indicated that, although adsorption meets water removal specification in a condensation free operation, the high fugacity of Carbon Dioxide penalizes the dehydration performance due to probably two facts: (i) higher Carbon Dioxide fugacity in the humid natural gas imply higher saturation water Content in the gas phase, which increases the service of dehydration units; and (ii) higher Carbon Dioxide fugacity in the humid natural gas establishes a discreet adsorption competition with water resulting in 6.5% increase of adsorbent bed volume for operating pressures of 35 bar or higher.

José Luiz De Medeiros - One of the best experts on this subject based on the ideXlab platform.

  • supersonic separator for cleaner offshore processing of natural gas with high Carbon Dioxide Content environmental and economic assessments
    Journal of Cleaner Production, 2019
    Co-Authors: Lara De Oliveira Arinelli, José Luiz De Medeiros, Alexandre Mendonca Teixeira, Ofelia De Queiroz Fernandes Araujo
    Abstract:

    Abstract Supersonic separators offer a cleaner offshore processing of natural gas with Carbon Dioxide Content from deep-water oil-gas fields. Conventional offshore gas processing comprises water dew-point adjustment via glycol-absorption, hydroCarbon dew-point adjustment via Joule-Thomson expansion, and Carbon Dioxide removal via membrane-permeation. Alternative processing contemplates the use of supersonic separators for adjusting gas dew-points followed by Carbon Dioxide capture via membrane-permeation (so-called SS-MP scheme); or for adjusting gas dew-points and also accomplishing Carbon Dioxide abatement (so-called SS-SS scheme). The conventional process is environmentally and economically compared with SS-MP and SS-SS for application in offshore rigs treating raw gas (44%mol Carbon Dioxide) to produce exportable fuel-gas (≈20%mol Carbon Dioxide), while dispatching Carbon Dioxide rich fluid (≈75%mol Carbon Dioxide) for enhanced oil recovery in the oil-gas field. Results show that SS-MP requires 7.8% less power than the conventional process. Moreover, implementing SS-SS deepens the advantage against the conventional operation because SS-SS produces Carbon Dioxide rich fluid at high-pressure, requiring much less compression power for enhanced oil recovery than the low-pressure permeate from membrane-permeation. SS-SS has lowest Carbon emission (−28.3%), lowest power consumption (−21.3%) and best economic performance: lowest manufacturing cost and lowest compressor investment. Thus, SS-SS is the overall best and cleanest solution, with highest 20 years net value (+860 MMUSD) and lowest environmental impact.

  • natural gas dehydration by molecular sieve in offshore plants impact of increasing Carbon Dioxide Content
    Energy Conversion and Management, 2017
    Co-Authors: Myrlla G R S Santos, José Luiz De Medeiros, Leilane M S Correia, Ofelia De Queiroz Fernandes Araujo
    Abstract:

    Abstract Dehydration is a critical operation in natural gas conditioning as it reduces the potential for corrosion, hydrate formation and freezing in process equipment and transportation pipelines. Water dew point adjustment is particularly challenging in the remote ultra-deepwater natural gas reserves of the Brazilian Pre-Salt fields due to their very high Carbon Dioxide Contents – from 30% up to 90% in raw natural gas – which is a consequence from the Carbonaceous rock of the reservoir structure and long term elevation of Carbon Dioxide Content due to its injection for early enhanced oil recovery. Under this scenario, the study evaluates the impact of the Carbon Dioxide Content of the natural gas on the performance of water dew point via water adsorption on 4 A Zeolite molecular sieve beds. Process simulation with adsorption simulator Adsim (Aspen Technology, Inc), at varying operation pressures and Carbon Dioxide Contents in raw natural gas, indicated that, although adsorption meets water removal specification in a condensation free operation, the high fugacity of Carbon Dioxide penalizes the dehydration performance due to probably two facts: (i) higher Carbon Dioxide fugacity in the humid natural gas imply higher saturation water Content in the gas phase, which increases the service of dehydration units; and (ii) higher Carbon Dioxide fugacity in the humid natural gas establishes a discreet adsorption competition with water resulting in 6.5% increase of adsorbent bed volume for operating pressures of 35 bar or higher.

  • Comparative analysis of separation technologies for processing Carbon Dioxide rich natural gas in ultra-deepwater oil fields
    Journal of Cleaner Production, 2017
    Co-Authors: Ofélia De Queiroz Fernandes Araújo, Jailton Ferreira Do Nascimento, Wilson Mantovani Grava, Alessandra De Carvalho Reis, José Luiz De Medeiros, Ana Paula Santana Musse
    Abstract:

    Offshore oil production in ultra-deepwater, with associated natural gas showing high Carbon Dioxide Content and high gas to oil ratio, poses stringent constraints to upstream gas processing technologies. Under such circumstances, oil and gas are processed in Floating Production Storage and Offloading rigs, whose topside facilities are limited in terms of weight and footprint of equipment. Energy demands, supplied by on-site generation, also reduce the availability of space and weight to oil and gas processing. This work evaluates Carbon Dioxide separation alternatives applicable to this challenging scenario in terms of technical, economic and environmental aspects, considering early enhanced oil recovery as the destination of Carbon Dioxide. The Brazilian Pre-Salt fields are used as case study due to their unusual high capacity gas processing on the production topside, a consequence of the high gas to oil ratio and Carbon Dioxide Content. The set of studied Carbon Dioxide separation technologies encompasses membrane permeation, chemical absorption by aqueous methyl diethanolamine with piperazine, physical absorption with propylene Carbonate and hybrid variants physical absorption and membranes, membranes and chemical absorption, and two stages membrane, technically assessed by process simulation. Due to the continuous injection of Carbon Dioxide to enhanced oil recovery, the reservoir Content of Carbon Dioxide increases along production life-cycle, which means that the performances of technologies have to be compared under short-term, mid-term and long-term Carbon Dioxide Content in the associated gas, respectively, of 10%, 30% and 50% (mol), for gas production of 6 million sm3/d. Chemical absorption exhibits the lowest hydroCarbon losses and the lowest specific electric power consumption at the expense of the highest footprint, for all investigated scenarios. The lowest life-cycle costs are for chemical absorption and two stages membrane, respectively $0.57 and $0.46 million/GJ of exported gas, while the largest cost belongs to the hybrid membrane and chemical absorption ($1.78 million/GJ of exported gas). Chemical absorption holds the lowest Carbon Dioxide emission per ton of injected Carbon Dioxide (0.15 t/t), seconded by membrane permeation (0.19 t/t). Hybrid membrane and chemical absorption inherits the small footprint of membrane permeation and, despite its highest life-cycle cost, is recommended for flexibility reasons due to increasing Carbon Dioxide Content in the reservoir life-time in cases of ultra-deepwater fields with high gas to oil ratio, high Carbon Dioxide Content and early Carbon Dioxide enhanced oil recovery. Contrarily to the widely acceptance of membrane permeation as a leading small footprint solution, the overall performance analysis, under the adopted premises, remarkably favors chemical absorption.

Martin H Kroll - One of the best experts on this subject based on the ideXlab platform.