Selective separation of naphthenes for production of enhanced viscosity index lube base stocks

    公开(公告)号:US12203034B2

    公开(公告)日:2025-01-21

    申请号:US17664177

    申请日:2022-05-19

    Abstract: This disclosure provides methods for separating multi-ring naphthenes from a hydrocarbon feedstock. The hydrocarbon feedstock includes at least normal paraffins, isoparaffins, 1-ring naphthenes attached with a paraffinic alkyl chain, and multi-ring naphthenes. The methods comprise passing the hydrocarbon feedstock and a solvent, at a temperature and pressure through a bed of an adsorbent comprising a metal-organic framework (MOF) adsorbent, to adsorb the multi-ring naphthenes from the hydrocarbon feedstock, thereby producing a base stock product that is depleted in multi-ring naphthenes. The metal-organic framework adsorbent is a porous crystalline material comprised of metal functionalities connected by organic linkers to form a repeating 2-D or 3-D lattice. The base stock product has a viscosity index (VI) greater than the viscosity index of the hydrocarbon feedstock. The methods of this disclosure upgrade Group II base stocks (also Group II+ base stocks) to Group III or Group III+ base stocks, and also upgrade Group III base stocks to Group III+ base stocks.

    Rubber Blends Containing Unsaturated Waxes And Use Thereof

    公开(公告)号:US20250019525A1

    公开(公告)日:2025-01-16

    申请号:US18221312

    申请日:2023-07-12

    Abstract: Rubber blends may comprise at least one rubber compound, and at least one wax mixed with the at least one rubber compound, and wherein the at least one wax comprises an unsaturated wax. Suitable unsaturated waxes may include, but are not limited to C18+ linear alpha olefins (LAOs), LAO dimers formed from C18+ LAOs and having an internal olefin, or any combination thereof. The C18+ LAOs may be C20-C24 LAOs or C24+ LAOs. The rubber blends may be used in forming various rubber articles and in forming at least a portion of a tire, such as a tire sidewall containing a vulcanized rubber blend.

    Polyethylene Blends, Films Thereof, and Methods Thereof

    公开(公告)号:US20240400804A1

    公开(公告)日:2024-12-05

    申请号:US18696216

    申请日:2022-10-04

    Abstract: The present disclosure relates to polyethylene blends, films thereof, and methods thereof. In at least one embodiment, a polymer blend includes a first polyethylene having a density of about 0.94 g/cm3 to about 0.97 g/cm3 and a melt index of about 0.1 g/10 min to about 10 g/10 min. The blend includes a second polyethylene comprising at least 80 wt % ethylene derived-units. The second polyethylene has a density of about 0.918 g/cm3 to about 0.945 g/cm3, a number average molecular weight (Mn) of about 10,000 g/mol to about 20,000 g/mol, a weight-average molecular weight (Mw) of about 75,000 g/mol to about 300,000 g/mol, a melt index (2.16 kg) of about 0.1 g/10 min to about 5 g/10 min, a high load melt index (21.6 kg) of about 25 g/10 min to about 80 g/10 min, and a melt index ratio of about 10 to about 50.

    METHOD AND SYSTEM FOR SEISMIC ANOMALY DETECTION

    公开(公告)号:US20240393489A1

    公开(公告)日:2024-11-28

    申请号:US18696204

    申请日:2022-09-16

    Abstract: A method and system for seismic anomaly detection is disclosed. Hydrocarbon prospecting relies on accurate modeling of subsurface geologic structures and detecting fluid presence in the geologic structures. For example, a seismic survey is gathered and processed to create a mapping of the subsurface region. The processed data is then examined, such as by comparing pre- or partially-stacked seismic images, in order to identify subsurface structures that may contain hydrocarbons. Instead of relying on engineered image attributes, which may be unreliable and biased, to identify anomalous features, an unsupervised machine learning framework is used to learn the relationships among partially-stack images or among pre-stack images to detect the anomalous features, and in turn hydrocarbon presence.

    ACOUSTIC FLUID MONITORING SYSTEM
    520.
    发明申请

    公开(公告)号:US20240369514A1

    公开(公告)日:2024-11-07

    申请号:US18685383

    申请日:2022-07-12

    Abstract: An acoustic fluid monitoring system, as well as a method for monitoring fluid flow within a pipe using the acoustic fluid monitoring system, are provided herein. The system includes a first sensing probe and a second sensing probe that are acoustically coupled to the outer surface of a wall of a pipe through which a fluid is flowing. The first sensing probe operates at a first resonance frequency, and the second sensing probe operates at a second resonance frequency. The first sensing probe and the second sensing probe are configured to record a first acoustic signal and a second acoustic signal, respectively, corresponding to an acoustic wave propagating through the pipe wall. Characteristics of the first acoustic signal and the second acoustic signal, as well as the relationship between the first acoustic signal and the second acoustic signal, relate to one or more properties of the fluid flowing through the pipe.

Patent Agency Ranking