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281.发明授权公开(公告)号：US10092875B2
公开(公告)日：2018-10-09
申请号：US15408533
申请日：2017-01-18
Applicant: Chevron U.S.A. Inc.
Inventor： Joshua Allen Thompson , Tracy Margaret Davis , Dan Xie , Stacey Ian Zones
IPC: B01D53/047 , B01D53/04
Abstract: We provide a method for removing contaminants from a gas, comprising: alternating input of the gas between two or more beds of adsorbent particles that comprise zeolite SSZ-36, zeolite SSZ-39, or zeolite SSZ-45; wherein the gas contacts one of the beds during an adsorption and a tail gas is simultaneously vented from another of the beds by desorption; wherein a contacting pressure is from about 345 kPa to about 6895 kPa and produces a product gas containing no greater than about 2 mol % carbon dioxide, at least about 10 wppm water, at least about 65 mol % of methane recovered from the feed gas, and at least about 25 mol % of ethane recovered from the feed gas; and wherein the tail gas is vented from the feed end of the beds. We also provide a method for removing a contaminant from a gas, wherein the gas contains hydrogen sulfide.
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公开(公告)号：US20180282171A1
公开(公告)日：2018-10-04
申请号：US15895207
申请日：2018-02-13
Applicant: Chevron U.S.A. Inc.
Inventor： Dan Xie
CPC classification number: C01B39/48 , B01J29/50 , B01J37/0018 , B01J37/04 , B01J37/10 , C01B39/305
Abstract: A method is provided for the synthesis of a zeolite of the offretite structure using cyclopropyltrimethylammonium cations as a structure directing agent.
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公开(公告)号：US20180275036A1
公开(公告)日：2018-09-27
申请号：US15996040
申请日：2018-06-01
Applicant: Chevron U.S.A. Inc.
Inventor： Varadarajan Dwarakanath , Dustin L. Walker , David R. Espinosa , Dennis A. Alexis , Harold C. Linnemeyer , Marlon Solano
CPC classification number: G01N11/00 , B01D2101/04 , E21B43/16 , E21B43/26 , E21B47/00 , G01L13/00 , G01N2011/006
Abstract: Provided herein are portable apparatus as well as methods of analyzing an injection fluid using these portable apparatus. In some embodiments, the injection fluid can contain a polymer, but a polymer is not necessary. For example, the portable apparatus and methods may be used to determine viscosity, long term injectivity, filter ratio, or any combination thereof of the injection fluid.
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公开(公告)号：US20180266874A1
公开(公告)日：2018-09-20
申请号：US15923176
申请日：2018-03-16
Applicant: Chevron U.S.A. Inc.
Inventor： James Daniel Montoya , Jacobo Rogelio Archuleta , Heath Evan Lynch , Cole Thomas Brinkley , Monica Suman Krishnan , Ronald Derane Goodwin
IPC: G01F23/68
CPC classification number: G01F23/68 , G01F23/0023
Abstract: A system for monitoring a floating roof of a liquid storage tank and a method for use of the system are described. The system includes linear position measuring devices to determine the vertical location and orientation of the floating roof within the storage tank and one or more transmitters to relay such information to a monitoring, recording, or control device, or to a remote computer network location. Typically, three measuring devices are used, positioned at or near the top of the storage tank and generally equally spaced around the perimeter of the tank. The system and method are useful to monitor the position and inclination of a liquid storage tank floating roof, such as may be used in the petrochemical, chemical and other industries where such storage tanks are in use.
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公开(公告)号：US10076721B2
公开(公告)日：2018-09-18
申请号：US15407561
申请日：2017-01-17
Applicant: Chevron U.S.A. Inc.
Inventor： Saham Sam Tafreshi , Kamal Gursahani , Yawen Q. Owen , Robert E. Marshall
CPC classification number: B01D53/261 , B01D2253/116 , B01D2257/80 , B01D2259/4009 , C10L3/106 , C10L2290/542
Abstract: Water saturated molecular sieve in a gas dehydration unit is regenerated. A short loop is used in which regeneration gas is recycled to a heater upstream of a vessel in regeneration mode. The regeneration gas passes over the molecular sieve in the vessel to desorb water thereby regenerating the molecular sieve. The short loop also includes a condenser, a water separator and a compressor. The regeneration gas is not recycled to the AGRU at the front-end of the plant, thus the regeneration gas flow rate can be increased, as it is not limited by the front-end capacity of the plant. Moreover, the pressure of the system during regeneration can be reduced within the limits of system hydraulics. By using the short loop, the total time required for regeneration can also be reduced. The embodiments disclosed can de-bottleneck molecular sieve regeneration constraints in LNG, LPG or cryogenic gas plants.
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Patent Agency Ranking
公开(公告)号：US20180259663A1
公开(公告)日：2018-09-13
申请号：US15905929
申请日：2018-02-27
Applicant: CHEVRON U.S.A. INC.
Inventor： Kevin John Davies
CPC classification number: G01V1/345 , G01V1/301 , G01V1/302 , G01V1/308 , G01V1/3808 , G01V1/3861 , G01V2210/1212 , G01V2210/1293 , G01V2210/1423 , G01V2210/1427 , G01V2210/51
Abstract: A method is described for processing Near Field Hydrophone (NFH) data including time or depth imaging for 3D and 4D high resolution geological interpretation. The method may include various combinations of source-NFH configurations, such as one or more NFH's mounted on both firing and or non-firing source arrays and source energy generated by cumulative air guns or air gun clusters firing on the active source array and/or individual air guns or air gun clusters firing on the active source array, whether fired simultaneously or non-simultaneously. The method may be executed by a system.
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287.发明申请公开(公告)号：US20180257019A1
公开(公告)日：2018-09-13
申请号：US15883406
申请日：2018-01-30
Applicant: Chevron U.S.A. Inc.
Inventor： Joshua Allen Thompson , Dan Xie
Abstract: A method for removing acid gas from feed gas, comprising: alternating input of feed gas between beds of adsorbent particles that comprise zeolite SSZ-98 or SSZ-105; wherein gas contacts one of the beds during an adsorption and tail gas is vented from another bed by desorption; wherein a product gas containing no greater than about 2 Mol % carbon dioxide is produced, and methane and ethane are recovered. A method for removing acid gas, wherein the product gas contains 1 wppm H2S or less. A process for removing acid gas from feed gas, comprising adjusting selectivity of an adsorbent by changing a substitution of ERI phase with LEV phase in an intergrown molecular sieve. A process for removing acid gas from a feed gas, comprising: contacting a feed gas with adsorbent comprising a molecular sieve having a defined intergrowth of an ERI phase and a LEV phase.
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公开(公告)号：US20180251688A1
公开(公告)日：2018-09-06
申请号：US15945155
申请日：2018-04-04
Applicant: Chevron U.S.A. Inc.
Inventor： Dennis John O'Rear , Russell Evan Cooper , Daniel Chinn , Tapan K. Das
IPC: C10G31/06
CPC classification number: C10G31/06 , C10G2300/205
Abstract: Particulate mercury is removed from crude oil by thermally treating the crude oil or condensate at temperatures in a range from 150° C. to 350° C. and at a sufficient pressure with subsequent cooling under maintenance of pressure to provide irreversible conversion to elemental mercury, which may be preferentially removed in a mercury removal unit.
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公开(公告)号：US10059639B2
公开(公告)日：2018-08-28
申请号：US15255271
申请日：2016-09-02
Applicant: Chevron U.S.A. Inc.
Inventor： Hye-Kyung Cho Timken , Bong-Kyu Chang , Sven Ivar Hommeltoft
CPC classification number: C07C2/58 , B01J31/0284 , B01J2231/32 , C07C2/60 , C07C2527/125 , C07C2531/02 , C10G17/02 , C10G29/205 , C10G2300/1088 , C10G2400/02 , C10L1/06 , C10L2270/023 , C07C11/02
Abstract: A process, comprising: providing an olefin feed comprising pentenes, butenes, and isopentane; and alkylating the olefin feed with isobutane using an acidic ionic liquid catalyst; wherein less than 5 mol % of C5 olefins in the olefin feed are converted to isopentane, and the alkylate gasoline has defined final boiling points and high RONs. A process comprising: alkylating an olefin feed comprising pentenes and isopentane, with isobutane using an acidic ionic liquid catalyst; wherein less than 5 mol % of C5 olefins in the olefin feed are converted to isopentane; and wherein an n-pentane product yield is low. An alkylate gasoline, comprising less than 0.1 wt % olefins and aromatics, less than 1.8 wt % C12+hydrocarbons, and greater than 60 wt % combined C8 and C9 hydrocarbons, wherein the trimethylpentane in the C8 hydrocarbons and the trimethylhexane in the C9 hydrocarbons are defined.
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290.发明申请公开(公告)号：US20180231501A1
公开(公告)日：2018-08-16
申请号：US15751429
申请日：2016-08-12
Applicant: Los Alamos National Security, LLC , Chevron U.S.A. Inc.
Inventor： Alp T. Findikoglu , Dipen N. Sinha , Daniel R. Chapman
CPC classification number: G01N29/043 , G01F1/66 , G01F1/708 , G01F1/74 , G01N29/07 , G01N29/326 , G01N29/343 , G01N29/348 , G01N29/4409 , G01N29/4463 , G01N29/4472 , G01N29/449 , G01N29/46 , G01N2291/011 , G01N2291/0258 , G01N2291/2634
Abstract: Methods for detecting and monitoring changes in mechanical structures and in walls of pipes, vessels and storage tanks, using muitimode acoustic signal propagation and detection, are described. Acoustic signals having chosen amplitude-time-frequency characteristics excite multiple modes in the structure under investigation, are generated and received at a small number of accessible locations, such as the ends of pipes and the tops and bottoms of vessels and storage tanks, with the inspection region between transmit and receive transducers. Small mechanical changes lead to acoustic scattering and attenuation among the various modes, which are detectable as changes in received signal intensity. Such changes may include material loss, material conversion and material addition. Once the structure is characterized in a known condition, the present method may be used to monitor the structure at a later time to determine whether changes have taken place. Methods for effective temperature compensation are also described. In addition, various pipe geometries and complex pipe geometries involving elbows, flanges, and the like can be monitored.
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