The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

Thibaut V.j. Charpentier - One of the best experts on this subject based on the ideXlab platform.

  • Lead Sulfide (PbS) Scale Behavior and Deposition as a Function of Polymeric Sulfide Inhibitor Concentration in Multiphase
    Corrosion, 2018
    Co-Authors: William Keogh, Anne Neville, Thibaut V.j. Charpentier, Violette Eroini, John Helge Olsen, Frank Møller Nielsen, Jon Arne Ellingsen, Oeystein Bache, Gifty Oppong Boakye, Salima Baraka-lokmane
    Abstract:

    Deposition of inorganic mineral scale on downhole Completion Equipment contributes to significant downtime and loss of production within the oil and gas industry. High temperature/high pressure (HT/HP) fields have reported build-up of lead sulfide (PbS) scale as a consequence of reservoir souring; and the resultant reaction between dissociated sulfide anions from hydrogen sulfide (H2S) and heavy metal cations. In this work, laboratory apparatus enabled simulation of scale precipitation under turbulent emulsion-forming multiphase conditions, with behavior of PbS particles at the oil/water interface and subsequent adhesion onto anti-fouling surfaces measured at a range of polymer concentrations. Introduction of polymer sulfide inhibitor (PSI) product to the formation brine at concentrations of 500mg/L reduced overall PbS deposition whilst addition of 5000mg/L further reduced scale crystallisation but resulted in complete emulsification of the light oil phase. The tendency of soluble polymers to act as surfactants led to increased stabilisation of the formed oil in water (o/w) emulsion with heightened PSI concentration. Optical microscope, gravimetric and rheological measurements explained depositional behaviour; whereby enhanced o/w emulsion viscosity and stability due to amphiphilic polymer adsorption onto both PbS scale and oil droplet interfaces resulted in uniform deposition upon all surfaces.

  • Insights into the Mechanism of Lead Sulfide Pbs Fouling and The Influence of Light Distillate Fraction
    Day 1 Wed June 20 2018, 2018
    Co-Authors: William Keogh, Thibaut V.j. Charpentier, Violette Eroini, John Helge Olsen, Frank Møller Nielsen, Salima Baraka-lokmane, Jon Arne Ellingsen, Oeystein Bache, Anne Neville
    Abstract:

    Abstract Deposition of inorganic scale on downhole Completion Equipment contributes to significant downtime and loss of production within the oil and gas industry. High temperature/high pressure (HT/HP) fields have reported build-up of lead sulfide (PbS) scale as a consequence of reservoir souring. This paper reports on the design of an experimental rig allowing diffusion of H2S into a scaling brine under dynamic environments. Multiphase conditions induced by introduction of a light distillate within the system were used to create an emulsion in order to reflect more accurately the scaling process occurring within sour systems. The results showed that the presence of an oil phase within the system caused the lead sulfide nano crystals to reside at the oil- water (o/w) interface; increasing surface build-up propensity through an adhesion process. Performance of a range of coatings for potential application in oilfield environments was determined through gravimetric measurements and microscopy techniques and the wettability of surfaces was shown to have a significant influence on the degree of lead sulfide deposition in a multiphase system.

  • A study of barium sulphate surface fouling at different saturation ratio and the effect of Polyphosphinocarboxylic acid
    2016
    Co-Authors: Ogbemi Bukuaghangin, Olujide Sanni, Nikil Kapur, Michael Huggan, Anne Neville, Thibaut V.j. Charpentier
    Abstract:

    The deposition and subsequent growth of inorganic scale on Completion Equipment is a major problem within the oil and gas industry. An in-situ flow cell was designed to investigate barium sulphate surface fouling on stainless steel. The set-up allows real-time analysis of the formation of scale as well as following various scaling parameters such as the surface coverage or number and size of crystals growing on the surface. The experimental results were fitted to a diffusion-controlled crystallisation based model. The effect of PolyPhosphinoCarboxylic Acid (PPCA) scale inhibitor on the growth of crystals was studied and showed that the Minimum Inhibition Concentration (MIC) is different for the surface and bulk solution. The results show that the inhibition mechanism was controlled by the mass transport of scale inhibitor molecules to the active sites of the growing crystals.

  • Kinetics study of barium sulphate surface scaling and inhibition with a once-through flow system
    Journal of Petroleum Science and Engineering, 2016
    Co-Authors: Ogbemi Bukuaghangin, Olujide Sanni, Nikil Kapur, Michael Huggan, Anne Neville, Thibaut V.j. Charpentier
    Abstract:

    The deposition and subsequent growth of inorganic scale on Completion Equipment is a major problem within the oil and gas industry. An in-situ flow cell was designed to investigate barium sulphate surface fouling on stainless steel. The set-up allows real-time analysis of the formation of scale as well as following various scaling parameters such as the surface coverage or number and size of crystals growing on the surface. The experimental results were fitted to a diffusion-controlled crystallization based model. The effect of PolyPhosphinoCarboxylic Acid (PPCA) scale inhibitor on the growth of crystals was studied and showed that the Minimum Inhibition Concentration (MIC) is different for the surface and bulk solution. The results show that the inhibition mechanism was controlled by the mass transport of scale inhibitor molecules to the active sites of the growing crystals.

Anne Neville - One of the best experts on this subject based on the ideXlab platform.

  • Lead Sulfide (PbS) Scale Behavior and Deposition as a Function of Polymeric Sulfide Inhibitor Concentration in Multiphase
    Corrosion, 2018
    Co-Authors: William Keogh, Anne Neville, Thibaut V.j. Charpentier, Violette Eroini, John Helge Olsen, Frank Møller Nielsen, Jon Arne Ellingsen, Oeystein Bache, Gifty Oppong Boakye, Salima Baraka-lokmane
    Abstract:

    Deposition of inorganic mineral scale on downhole Completion Equipment contributes to significant downtime and loss of production within the oil and gas industry. High temperature/high pressure (HT/HP) fields have reported build-up of lead sulfide (PbS) scale as a consequence of reservoir souring; and the resultant reaction between dissociated sulfide anions from hydrogen sulfide (H2S) and heavy metal cations. In this work, laboratory apparatus enabled simulation of scale precipitation under turbulent emulsion-forming multiphase conditions, with behavior of PbS particles at the oil/water interface and subsequent adhesion onto anti-fouling surfaces measured at a range of polymer concentrations. Introduction of polymer sulfide inhibitor (PSI) product to the formation brine at concentrations of 500mg/L reduced overall PbS deposition whilst addition of 5000mg/L further reduced scale crystallisation but resulted in complete emulsification of the light oil phase. The tendency of soluble polymers to act as surfactants led to increased stabilisation of the formed oil in water (o/w) emulsion with heightened PSI concentration. Optical microscope, gravimetric and rheological measurements explained depositional behaviour; whereby enhanced o/w emulsion viscosity and stability due to amphiphilic polymer adsorption onto both PbS scale and oil droplet interfaces resulted in uniform deposition upon all surfaces.

  • Insights into the Mechanism of Lead Sulfide Pbs Fouling and The Influence of Light Distillate Fraction
    Day 1 Wed June 20 2018, 2018
    Co-Authors: William Keogh, Thibaut V.j. Charpentier, Violette Eroini, John Helge Olsen, Frank Møller Nielsen, Salima Baraka-lokmane, Jon Arne Ellingsen, Oeystein Bache, Anne Neville
    Abstract:

    Abstract Deposition of inorganic scale on downhole Completion Equipment contributes to significant downtime and loss of production within the oil and gas industry. High temperature/high pressure (HT/HP) fields have reported build-up of lead sulfide (PbS) scale as a consequence of reservoir souring. This paper reports on the design of an experimental rig allowing diffusion of H2S into a scaling brine under dynamic environments. Multiphase conditions induced by introduction of a light distillate within the system were used to create an emulsion in order to reflect more accurately the scaling process occurring within sour systems. The results showed that the presence of an oil phase within the system caused the lead sulfide nano crystals to reside at the oil- water (o/w) interface; increasing surface build-up propensity through an adhesion process. Performance of a range of coatings for potential application in oilfield environments was determined through gravimetric measurements and microscopy techniques and the wettability of surfaces was shown to have a significant influence on the degree of lead sulfide deposition in a multiphase system.

  • A study of barium sulphate surface fouling at different saturation ratio and the effect of Polyphosphinocarboxylic acid
    2016
    Co-Authors: Ogbemi Bukuaghangin, Olujide Sanni, Nikil Kapur, Michael Huggan, Anne Neville, Thibaut V.j. Charpentier
    Abstract:

    The deposition and subsequent growth of inorganic scale on Completion Equipment is a major problem within the oil and gas industry. An in-situ flow cell was designed to investigate barium sulphate surface fouling on stainless steel. The set-up allows real-time analysis of the formation of scale as well as following various scaling parameters such as the surface coverage or number and size of crystals growing on the surface. The experimental results were fitted to a diffusion-controlled crystallisation based model. The effect of PolyPhosphinoCarboxylic Acid (PPCA) scale inhibitor on the growth of crystals was studied and showed that the Minimum Inhibition Concentration (MIC) is different for the surface and bulk solution. The results show that the inhibition mechanism was controlled by the mass transport of scale inhibitor molecules to the active sites of the growing crystals.

  • Kinetics study of barium sulphate surface scaling and inhibition with a once-through flow system
    Journal of Petroleum Science and Engineering, 2016
    Co-Authors: Ogbemi Bukuaghangin, Olujide Sanni, Nikil Kapur, Michael Huggan, Anne Neville, Thibaut V.j. Charpentier
    Abstract:

    The deposition and subsequent growth of inorganic scale on Completion Equipment is a major problem within the oil and gas industry. An in-situ flow cell was designed to investigate barium sulphate surface fouling on stainless steel. The set-up allows real-time analysis of the formation of scale as well as following various scaling parameters such as the surface coverage or number and size of crystals growing on the surface. The experimental results were fitted to a diffusion-controlled crystallization based model. The effect of PolyPhosphinoCarboxylic Acid (PPCA) scale inhibitor on the growth of crystals was studied and showed that the Minimum Inhibition Concentration (MIC) is different for the surface and bulk solution. The results show that the inhibition mechanism was controlled by the mass transport of scale inhibitor molecules to the active sites of the growing crystals.

F.c. Adamek - One of the best experts on this subject based on the ideXlab platform.

  • The application of new surface wellhead and production tree technologies to tension leg platforms
    1994
    Co-Authors: N. Monjure, F.c. Adamek
    Abstract:

    This technical paper addresses the specific needs related to surface wellhead and Completion Equipment installed on a Tension Leg Platform (TLP) and new technologies that are now available to provide improved performance and safety during installation and operating life span. All of the basic wellhead requirements are reviewed along with those aspects that are specific to TLP`S. Space restrictions, weight limitations, riser motion/tensioning, alignment, product performance, and cost saving technologies are some of the parameters to be considered by the wellhead designer. Design concepts and a suggested level of technology considerations are presented to enable the operator, designer, and Equipment supplier to select the appropriate technologies that achieve the most effective value.

Yi Huang - One of the best experts on this subject based on the ideXlab platform.

  • Parametric study on the behavior of an innovative subsurface tension leg platform in ultra-deep water
    China Ocean Engineering, 2017
    Co-Authors: Xingwei Zhen, Yi Huang
    Abstract:

    This study focuses on a new technology of Subsurface Tension Leg Platform (STLP), which utilizes the shallowwater rated well Completion Equipment and technology for the development of large oil and gas fields in ultra-deep water (UDW). Thus, the STLP concept offers attractive advantages over conventional field development concepts. STLP is basically a pre-installed Subsurface Sea-star Platform (SSP), which supports rigid risers and shallow-water rated well Completion Equipment. The paper details the results of the parametric study on the behavior of STLP at a water depth of 3000 m. At first, a general description of the STLP configuration and working principle is introduced. Then, the numerical models for the global analysis of the STLP in waves and current are presented. After that, extensive parametric studies are carried out with regarding to SSP/tethers system analysis, global dynamic analysis and riser interference analysis. Critical points are addressed on the mooring pattern and riser arrangement under the influence of ocean current, to ensure that the requirements on SSP stability and riser interference are well satisfied. Finally, conclusions and discussions are made. The results indicate that STLP is a competitive well and riser solution in up to 3000 m water depth for offshore petroleum production.

N. Monjure - One of the best experts on this subject based on the ideXlab platform.

  • The application of new surface wellhead and production tree technologies to tension leg platforms
    1994
    Co-Authors: N. Monjure, F.c. Adamek
    Abstract:

    This technical paper addresses the specific needs related to surface wellhead and Completion Equipment installed on a Tension Leg Platform (TLP) and new technologies that are now available to provide improved performance and safety during installation and operating life span. All of the basic wellhead requirements are reviewed along with those aspects that are specific to TLP`S. Space restrictions, weight limitations, riser motion/tensioning, alignment, product performance, and cost saving technologies are some of the parameters to be considered by the wellhead designer. Design concepts and a suggested level of technology considerations are presented to enable the operator, designer, and Equipment supplier to select the appropriate technologies that achieve the most effective value.