LOW MASS LOSS ASPHALTS FROM HEAVY CRUDE OILS
    42.
    发明申请

    公开(公告)号:WO2023039336A1

    公开(公告)日:2023-03-16

    申请号:PCT/US2022/075044

    申请日:2022-08-17

    Abstract: Systems and methods are provided for forming soft asphalt compositions with improved properties that are derived from distillation of a crude oil (or mixture of crude oils) having an API gravity of 24° or less. In order to form a target asphalt composition from a feedstock having an API gravity of 24° or less, a distillation is performed where at least two fractions are generated that have a T10 distillation point of 430°C or more. A first fraction can correspond to a distillate fraction having a T10 distillation 2021eml65-usoint of 430°C or more. A second fraction can correspond to a bottoms fraction. Disproportionate blending can then be used to combine a portion of the first fraction with a portion of the second fraction. By using disproportionate blending of a distillate fraction and a bottoms fraction, an asphalt product fraction can be formed that has both a flash point of 270°C or more and a KV100 between roughly 700 cSt and 1200 cSt.

    ACOUSTIC FLUID MONITORING SYSTEM
    43.
    发明申请

    公开(公告)号:WO2023028396A1

    公开(公告)日:2023-03-02

    申请号:PCT/US2022/073618

    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.

    METHODS FOR IN-SITU APPLICATION OF A COATING AGENT TO PRODUCTION TUBING USING A PLUNGER LIFT SYSTEM

    公开(公告)号:WO2023019047A1

    公开(公告)日:2023-02-16

    申请号:PCT/US2022/073489

    申请日:2022-07-07

    Abstract: Methods for the in-situ application of coating agent to production tubing within wellbores using plunger lift systems are provided herein. One method includes shutting in the wellbore, pressurizing the production tubing to displace fluids from the production tubing, and dropping a plunger from the surface into the production tubing such that the plunger travels toward the bottom of the production tubing until landing on a bumper spring. The method also includes pumping a predetermined amount of the coating agent from the surface into the production tubing such that the coating agent flows to the bottom of the production tubing and settles on top of the plunger and utilizing the differential pressure between the production tubing and the annulus to return the plunger and the coating agent to the surface, where the coating agent is applied to the inner diameter of the production tubing as it flows toward the surface.

    RENEWABLE ARCTIC DIESEL PRODUCTION
    47.
    发明申请

    公开(公告)号:WO2022173422A1

    公开(公告)日:2022-08-18

    申请号:PCT/US2021/017283

    申请日:2021-02-09

    Abstract: A method for producing renewable arctic diesel is provided herein. The method includes contacting a bio-derived feedstock with a hydrotreatment catalyst under effective hydrotreatment conditions to produce a hydrotreated feedstock and separating the hydrotreated feedstock into gas phase products and liquid phase products. The liquid phase products include an oxygen content of less than 0.4 wt% but greater than 10 ppm. The method also includes contacting the liquid phase products with a ZSM-48-based isomerization/dewaxing catalyst under effective isomerization/dewaxing conditions to produce an isomerized product stream including a change in cloud point (ΔCP) of 50 degrees °C or more. The method further includes separating the isomerized product stream into gas phase products and liquid phase products, as well as fractionating the liquid phase products to produce renewable naphtha and renewable arctic diesel with a cloud point of -20 °C or less and a yield of 80 wt% or more.

    CARBON NANOTUBE CONSTRUCTS HAVING A DENSITY GRADIENT AND METHODS FOR PREPARING SAME

    公开(公告)号:WO2022154985A1

    公开(公告)日:2022-07-21

    申请号:PCT/US2021/072357

    申请日:2021-11-11

    Abstract: Carbon nanotube constructs can include a plurality of first regions including a first plurality of carbon nanotube bundles that are aligned substantially in parallel; a plurality of second regions including a second plurality of carbon nanotube bundles that extend from the plurality of first regions and are non-aligned with the first plurality of carbon nanotube bundles in the plurality of first regions; and an interpenetration region between the plurality of first regions in which the second plurality of carbon nanotubes within second regions extending from one or more adjacent first regions interpenetrate one another. Methods can include providing a plurality of carbon nanotube bundles; and converting the plurality of carbon nanotube bundles into a carbon nanotube construct by applying at least one of stretching force, compression, or elastocapillary coalescence.

Patent Agency Ranking