Be prepared for some heavy slogging. While some results will be journal articles, most of them will be patents.
TIP: Cast a wide net. When setting up the alert, don’t try to focus too much. In fact, the most productive search string will be …
Exxonmobil
Then resign yourself to spending a few minutes browsing through the results to find those that match your interests.
Here a few recent results from a Google® Scholar alert I set up for myself …
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Musa Maharramov and Mark D. Zoback (2018). ”Monitoring of cyclic steam stimulation by inversion of surface tilt measurements.” The Leading Edge, 37(5), 350–355.
https://doi.org/10.1190/tle37050350.1
Musa Maharramov1 and Mark D. Zoback2
1Formerly Stanford Exploration Project; presently ExxonMobil Upstream Research Company.
2Stanford University.
Corresponding author: musa@sep.stanford.edu
Temperature and pressure changes associated with the cyclic steam stimulation (CSS) used in heavy oil production from sands are accompanied by significant deformation. Inversion of induced reservoir pore-pressure changes from deformation measurements may provide a potentially powerful reservoir-monitoring tool if the issues of measurement noise, uncertainty in model parameterization, and numerical accuracy and stability can be resolved. We discuss inverting injection-induced reservoir pressure changes from observable surface deformations using a linear poroelastostatic model of a heavy oil reservoir. We also present results of inversion from surface tilt measurements taken at a production site undergoing CSS. We demonstrate that a stable inversion of the reservoir pore-pressure change can be achieved from sparse and noisy surface tilt measurements using constrained regularized optimization. The results provide an insight into the heterogeneity of reservoir stimulation and could help with optimizing well locations and stimulation protocols.
https://library.seg.org/doi/abs/10.1190/tle37050350.1
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Process for Producing Paraxylene by Methylation of Benzene and/or Toluene
Abstract
A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index≤5, and the alkylation conditions comprise a temperature less than 500° C. Paraxylene may then be recovered from the alkylated aromatic product. source: https://patents.google.com/patent/US20180099913A1/en
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Process for Selectivating Catalyst for Producing Paraxylene by Methylation of Benzene and/or Toluene
Abstract
A process is described for producing paraxylene, in which an aromatic hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated aromatic product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index ≤5, and the alkylation conditions comprise a temperature less than 500° C. The alkylation catalyst may be selectivated to produce a higher than equilibrium amount of paraxylene by using a molar ratio of alkylating agent to aromatic of at least 1:4.
source: https://patents.google.com/patent/US20180099915A1/en
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High conductivity lubricating oils for electric and hybrid vehicles
Abstract
Provided is a lubricating oil for electric and hybrid vehicles. The lubricating oil has a composition including at least 80 wt % of a lubricating base oil, from 0.8 to 5 wt % of one or more metal detergents, from 0 to 5 wt % of one or more dispersants, from 0 to 1.5 wt % of zinc dialkyldithiophosphate antiwear agent, from 0 to 0.2 wt % of a molybdenum dialkyldithiocarbamate, from 0 to 2 wt % of a viscosity modifier based on active ingredient, and from 0.01 to 5 wt % of other lubricating oil additives. The lubricating oil has an electrical conductivity from 3,000 to 20,000 pS/m, and kinematic viscosity from 2 to 20 cSt at 100° C. This disclosure also relates to methods for producing the lubricating oil, methods for lubricating electric and hybrid vehicles, and methods for controlling electrical conductivity of a lubricating oil by using conductivity promoters and conductivity inhibitors.
source: https://patents.google.com/patent/US20180100115A1/en
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Low conductivity lubricating oils for electric and hybrid vehicles
Abstract
Provided is a lubricating oil for electric and hybrid vehicles. The lubricating oil includes at least 80 wt % of a lubricating base oil, 0.5 to 5 wt % of one or more dispersants, 0 to 4 wt % of one or more neutral metal detergents, 0 to 1.5 wt % of zinc dialkyldithiophosphate, 0 to 0.2 wt % of molybdenum dialkyldithiocarbamate, 0 to 2 wt % of an active viscosity modifier, and 0.01 to 5 wt % of one or more other lubricating oil additives. The lubricating oil is essentially free of overbased metal detergents. The lubricating oil has an electrical conductivity from 50 to 3,000 pS/m and a kinematic viscosity from 2 to 20 cSt at 100° C. This disclosure also relates to methods for producing the lubricating oil, methods for lubricating electric and hybrid vehicles, and methods for controlling electrical conductivity of a lubricating oil by using conductivity promoters and conductivity inhibitors.
source: https://patents.google.com/patent/US20180100114A1/en
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Thermoplastic Elastomer Compositiions Comprising Ultrahigh Molecular Weight Polyethylene and Methods for Making the Same
Abstract
Described herein are thermoplastic elastomer compositions that comprise 30-60 wt % of a thermoplastic vulcanizate, 5 to 25 wt % of a thermoplastic resin, 5 to 25 wt % of a high density polyethylene, and 5 to 40 wt % of a ultrahigh molecular weight polyethylene. The thermoplastic elastomer compositions may be particularly useful in forming laminates, such as slip coat laminates for glass run channels.
source: https://patents.google.com/patent/US20180100061A1/en
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Method for preventing or minimizing electrostatic discharge and dielectric breakdown in electric vehicle powertrains
Abstract
This disclosure relates to a method for preventing or minimizing electrostatic discharge and dielectric breakdown in an electric vehicle powertrain by controlling electrical conductivity over a lifetime of a lubricating oil in an electric vehicle powertrain lubricated with the lubricating oil. The lubricating oil has a composition including a lubricating oil base stock as a major component, and an additive package as a minor component comprising one or more lubricating oil additives, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from 10 pS/m to 20,000 pS/m, a dielectric constant of 1.6 to 3.6, with a ratio of electrical conductivity-to-dielectric constant from 1,000 to 10,000. Also provided are methods for obtaining a desired electrical conductivity-to-dielectric constant ratio of a lubricating oil for an electric powertrain and powertrain components and methods for lubricating an electric vehicle powertrain and powertrain components.
source: https://patents.google.com/patent/US20180100120A1/en
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Lubricating oil compositions for electric vehicle powertrains
Abstract
This disclosure relates to a lubricating oil for an electric vehicle powertrain and powertrain components. The lubricating oil has a composition including a lubricating base oil as a major component, an additive package, as a minor component, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from about 10 pS/m to about 20,000 pS/m, a dielectric constant of about 1.6 to about 3.6, with a ratio of electrical conductivity-to-dielectric constant from about 5 to about 10,000. This disclosure also relates to methods for producing a lubricating oil for an electric vehicle powertrain and powertrain components.
source: https://patents.google.com/patent/US20180100117A1/en
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Method for controlling electrical conductivity of lubricating oils in electric vehicle powertrains
Abstract
This disclosure relates to a method for minimizing the electrical drainage of charged electrical powertrain components, a method for controlling electrical conductivity over a lifetime of a lubricating oil in an electric vehicle powertrain lubricated with the lubricating oil, and a method for obtaining a desired electrical conductivity-to-dielectric constant ratio of a lubricating oil for an electric vehicle powertrain and powertrain components. The methods relate to controlling at least one of oxidation, deposit formation and corrosion over the service lifetime of the oil. The lubricating oil has a composition including a lubricating base oil as a major component, an additive package, as a minor component, and an effective amount of one or more conductivity agents, as a minor component. The lubricating oil has an electrical conductivity from 10 pS/m to 20,000 pS/m, a dielectric constant of 1.6 to 3.6, with a ratio of electrical conductivity-to-dielectric constant from 5 to 10,000.
source: https://patents.google.com/patent/US20180100118A1/en
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Hebron Offshore Development Project
Overview
Authors K. J. Wolfe (ExxonMobil Development Company)
G. J. Parker (ExxonMobil Development Company)
S. L. Sellars (ExxonMobil Canada Properties)
DOIhttps://doi.org/10.4043/28695-MSDocument IDOTC-28695-MSPublisherOffshore Technology Conference Source: Offshore Technology Conference, 30 April - 3 May, Houston, Texas, USA Publication Date2018
The Hebron Offshore Development Project, offshore Eastern Canada, is one of the world's most ambitious oil projects. In November 2017 ExxonMobil Canada Properties (EMCP) commenced oil production from this world scale engineering marvel located in 93m of water approximately 350 kilometers southeast of St. John's NL in an area known as the Grand Banks. The Hebron platform consists of a Gravity Based Structure (GBS) with a storage capacity of 1.2 million barrels of oil and an integrated steel topsides structure. The integrated topsides design with total operating weight capacity of ~65,000 t contains drilling and production facilities with a peak production capacity of 150,000 barrels per day (bpd) and a living quarters for 220 people. The field infrastructure also includes a subsea Offshore Loading System (OLS) providing crude offloading capability to tankers and a fiber optic cable loop linking the offshore platform to an onshore network enabling enhanced digital technology implementation. The project was sanctioned on 31 December 2012 and first oil occurred on 27 November 2017, ahead of schedule. This paper discusses the Project from design through execution and highlights several of the unique design features, execution sequence and specific challenges which were faced. Special technologies were employed and project management initiatives implemented which enabled the success of the project.
source: https://www.onepetro.org/conference-paper/OTC-28695-MS
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Application of Digital Technologies to Improve Collaboration and Support of Remote Offshore Operations
Authors
M. F. Ryan (ExxonMobil Canada Properties)
C. P. Kourvelas (ExxonMobil Canada Properties)
D. C. Tuttle (ExxonMobil Canada Properties)
S. G. Nicholls (ExxonMobil Production Company)
DOIhttps://doi.org/10.4043/28821-MSDocument IDOTC-28821-MS
Publisher Offshore Technology Conference
Source Offshore Technology Conference, 30 April - 3 May, Houston, Texas, USA Publication
Date2018
Installation of a fiber optic cable between Newfoundland and offshore installations on the Grand Banks has enabled implementation of digital technologies which can improve safety, reliability, and profitability of offshore operations. An overview of the fiber optic infrastructure and recently established Onshore Support & Control Center (OSCC) is presented along with technical, organizational, and operational considerations for its design. To date, use of the OSCC has improved operator training, allowed shifting of offshore roles to onshore, and enhanced support of and collaboration with offshore operations. In order to implement future digital technology opportunities and capture additional benefits, a digital roadmap has been developed along with associated organizational changes to manage implementation.
source: https://www.onepetro.org/conference-paper/OTC-28821-M
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Integration of Multi-Site Engineering, Procurement, Fabrication and Commissioning
Authors
S. C. Edwards (ExxonMobil Canada Properties)
D. A. Fuller (ExxonMobil Development Company)
M. K. Johnson (Fluor Enterprises, Inc)
M. A. Nahas (WorleyParsons International, Inc.)
DOIhttps://doi.org/10.4043/29072-MSDocument IDOTC-29072-MS
Publisher Offshore Technology Conference
Source Offshore Technology Conference, 30 April - 3 May, Houston, Texas, USA
Publication Date 2018
In November 2017, ExxonMobil Canada Properties (EM) started production from the world-class Hebron development located approximately 340 km offshore St. John's, Newfoundland and Labrador (NL), Canada. The Hebron Platform is a standalone concrete single shaft Gravity Base Structure with an Offshore Loading System, Single Integrated Drill Rig, and Topsides production facilities capable of handling 150,000 barrels per day of crude oil. The Hebron Project was developed from Pre-FEED to Start-Up over the course of eight years in more than a dozen work sites. The project has achieved schedule commitments and liquidated more than 60 million work hours. A large contributor to success was the effective integration and management of engineering, fabrication and commissioning organizations at all work locations. This paper will explore the execution techniques which enabled the organization to successfully manage a complex scope divided amongst diverse work locations and contractors as well as describe some of the leadership and management techniques employed to create productive work behaviors across teams and work locations.
source: https://www.onepetro.org/conference-paper/OTC-29072-MS
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A Theoretical Analysis of Pulsating Torque Components in AC Machines with Variable Frequency Drives and Dynamic Mechanical Loads
Joseph Song-Manguelle
Exxon Neftegas Limited, Yuzhno-Sakhalinsk Russian Federation (e-mail: joseph.m.song@exxonmobil.com)
IEEE Transactions on Industrial Electronics, 05 April 2018
Abstract:
This paper analytically investigates expressions of oscillating motor's air-gap torque resulting simultaneously from dynamic electromagnetic and dynamic mechanical components. The electromagnetic torque is generated in the air-gap when the motor is supplied by variable frequency drives (VFDs) such as pulse-width-modulated voltage source inverters, or load-commutated-inverters. Whereas the mechanical torque components might result from dynamic mechanical processes such as wind-turbine blades, oil and gas fluid fluctuation and, for emulating dynamic mechanical loads, from a load side VFD. Simple and straight forward analytical relationships between electrical and mechanical harmonics are developed to understand the propagation of mechanical dynamics to the electric side and vice-versa. Intensive numerical simulations have been carried out to support the theoretical analysis. Time and frequency domain results confirm the robustness of the proposed relationships. Finally a laboratory experimental tests results also confirm the accuracy of the proposed relationships.
source: https://ieeexplore.ieee.org/abstract/document/8331903/
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Thermodynamic Interactions in a Model Polydiene/Polyolefin Blend Based on 1,2-Polybutadiene
Jialin Qiu†, Katrina I. Mongcopa†, Ruixuan Han† , Carlos R. López-Barrón‡ , Megan L. Robertson*† , and Ramanan Krishnamoorti*†
† Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
‡ ExxonMobil Chemical Company, Baytown, Texas 77520, United States
Macromolecules, 2018, 51 (8), pp 3107–3115
DOI: 10.1021/acs.macromol.7b02181
Thermodynamic interactions in polydiene/polyolefin blends composed of 1,2-polybutadiene (1,2-PBD) and fully saturated (with deuterium) 1,2-PBD were explored with small-angle neutron scattering (SANS). Two methods were employed to extract the temperature dependence of the Flory–Huggins interaction parameter, χ, from SANS data obtained in the single-phase region. First, Zimm analysis was conducted employing data obtained at low scattering angles, providing a model-independent method of characterizing χ. Next, the random phase approximation was fit to the full angle-dependent absolute scattering intensity. The χ parameter for 1,2-PBD/saturated 1,2-PBD was found to be large in magnitude at low temperatures and exhibited a strong temperature dependence. The experimentally measured χ, at high temperatures, was in agreement with predictions of solubility parameter theory based on PVT properties of the individual components. The large and strongly temperature-dependent χ parameter of the 1,2-PBD/saturated 1,2-PBD mixture is an attractive feature enabling facile material processing and is in stark contrast to behavior observed in more traditionally studied polyolefin/polyolefin and polydiene/polydiene pairs.
source: https://pubs.acs.org/doi/abs/10.1021/acs.macromol.7b02181
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The sub-chronic toxicity of a naphthenic hydrocarbon solvent in rats
Juan-Carlos Carrillo a, M. David Adenuga b, Fayaz Momin c, Richard H. McKee b a Shell Health, Shell International B.V., P.O. Box 162, 2501 AN, The Hague, The Netherlands b ExxonMobil Biomedical Sciences, Inc., 1545 Route 22 E., Annandale, NJ 08801, USA c Shell Health, Shell Oil Company, 150 N. Dairy Ashford Road, Woodcreek E276E, Houston, TX 77079, USA
Abstract
Cycloalkanes/naphthenes are constituents of complex hydrocarbon solvents, and hence an understanding of their toxicological profile is critical to establish safe limits for occupational exposures to these solvents. Although naphthenes are structurally related to and share a common metabolic fate with the straight and branched chain analogues, some toxicokinetic differences have been noted. The acute central nervous system response to volatile naphthenes in rodents has been shown to be slightly different compared to other alkane analogues. To determine whether these differences may extend to systemic effects with less volatile naphthenes, rats were exposed to 1500, 3000 or 6000 mg/m3 of a C9-C11 aliphatic solvent containing 70% naphthenes, for 90 days. Effects were limited to adaptive liver enlargement in both sexes and kidney toxicity in the male rat. For comparative purposes, the results from this study were compared to published reports of a complex hydrocarbon solvent with a higher proportion of volatile C5/C6 naphthenes and a mono-constituent naphthene (decahydronaphthalene). The results indicate that the systemic effects of naphthenes are similar to the straight and branched chain analogues and that the effects that are most relevant for human health evaluations of alkanes are acute central nervous system effects
source: https://www.sciencedirect.com/science/article/pii/S0273230018301028
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Compositions of Olefin Block Copolymers and Propylene-Based Elastomers
Abstract
Polymer blends comprising at least one olefin block copolymer such as poly(ethylene-b-ethylene/propylene-b-ethylene), and at least one propylene-based elastomer such as a propylene-ethylene random copolymer, such blends useful in elastic hygiene articles. The blends have improved permanent set compared to the propylene-based elastomer alone.
source: https://patents.google.com/patent/US20180079900A1/en
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Multimodal and Broad Molecular Weight High Density Polyethylene
Abstract
This invention relates to new multimodal and/or broad molecular weight high density polyethylene polymers. The polymers may be made in a single reactor, preferably a gas phase reactor using a dual catalyst system comprising a pyridyldiamido transition metal compound, a metallocene compound, a support, and optionally an activator
source: https://patents.google.com/patent/US20180079845A1/en
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Systems and methods for online model validation
Abstract
The disclosed subject matter includes a method for validation of a predictive model. A predictive model can be provided. Plant data can be captured. The plant data can be stored and screened to determine whether the plant data has a data quality above a threshold. If the data quality of the plant data is above a threshold, it can be supplied to the predictive model. The predictive model can determine a predicted yield based on the plant data. The predicted yield can be compared to the plant data to determine if a deviation between the plant data and the predicted yield exceeds an acceptable error tolerance. If the deviation exceeds the acceptable error tolerance, an alert can be sent.
source: https://patents.google.com/patent/US20180082002A1/en
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Systems and methods for separating classes of paraffinic compounds
Abstract
Systems and methods for the separation of classes of paraffins from a hydrocarbon sample can include a first column comprising a first zeolite adsorbent material for the isolation of one or more n-paraffins from the hydrocarbon sample and generation of a first eluate including one or more iso-paraffins and one or more one-ring or multi-ring naphthenes. The system can further include a second column, coupled to the first column, comprising a second zeolite adsorbent material for the isolation of one or more iso-paraffins or one-ring naphthenes from the first eluate and generation of a second eluate including one or more multi-ring naphthenes
source: https://patents.google.com/patent/US20180079970A1/en
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Thermodynamic Interactions in a Model Polydiene/Polyolefin Blend Based on 1,2-Polybutadiene
Jialin Qiu†, Katrina I. Mongcopa†, Ruixuan Han† , Carlos R. López-Barrón‡ , Megan L. Robertson*† , and Ramanan Krishnamoorti*†
† Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
‡ ExxonMobil Chemical Company, Baytown, Texas 77520, United States
Macromolecules, 2018, 51 (8), pp 3107–3115
DOI: 10.1021/acs.macromol.7b02181
Publication Date (Web): April 10, 2018
Copyright © 2018 American Chemical Society
*(R.K.) E-mail ramanan@uh.edu; Tel 713-743-4307., *(M.L.R.) E-mail mlrobertson@uh.edu; Tel 713-743-2748.
Thermodynamic interactions in polydiene/polyolefin blends composed of 1,2-polybutadiene (1,2-PBD) and fully saturated (with deuterium) 1,2-PBD were explored with small-angle neutron scattering (SANS). Two methods were employed to extract the temperature dependence of the Flory–Huggins interaction parameter, χ, from SANS data obtained in the single-phase region. First, Zimm analysis was conducted employing data obtained at low scattering angles, providing a model-independent method of characterizing χ. Next, the random phase approximation was fit to the full angle-dependent absolute scattering intensity. The χ parameter for 1,2-PBD/saturated 1,2-PBD was found to be large in magnitude at low temperatures and exhibited a strong temperature dependence. The experimentally measured χ, at high temperatures, was in agreement with predictions of solubility parameter theory based on PVT properties of the individual components. The large and strongly temperature-dependent χ parameter of the 1,2-PBD/saturated 1,2-PBD mixture is an attractive feature enabling facile material processing and is in stark contrast to behavior observed in more traditionally studied polyolefin/polyolefin and polydiene/polydiene pairs.
source: https://pubs.acs.org/doi/abs/10.1021/acs.macromol.7b02181
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