公开(公告)号：US20210189249A1

公开(公告)日：2021-06-24

申请号：US17131877

申请日：2020-12-23

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung Timken

IPC: C10B53/07 ,  C10G31/06 ,  C10G35/02 ,  C10G51/02 ,  C10G57/02

Abstract: Provided is a continuous process for converting waste plastic into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and passing the waste plastics through a pyrolysis reactor to thermally crack at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into offgas, a naphtha/diesel fraction, a heavy fraction, and char. Pyrolysis oil and wax, comprising the naphtha/diesel fraction and heavy fraction, is sent to a refinery FCC unit. A liquid petroleum gas C3-C5 olefin/paraffin mixture is recovered from the FCC unit and passed to a refinery alkylation unit. A propane fraction is recovered from the alkylation unit and passed to a dehydrogenation unit to produce propylene. The propylene is passed to a propylene polymerization reactor.

公开(公告)号：US11011043B2

公开(公告)日：2021-05-18

申请号：US16293284

申请日：2019-03-05

Applicant: Chevron U.S.A. Inc.

Inventor： Anmar Nazhan

IPC: G08B21/18 ,  E21B21/08

Abstract: A set of alarm criteria for a drilling tool may be obtained. Individual alarm criterion of the set of alarm criteria may be satisfied based on the drilling tool operating with a set of operating characteristics corresponding to the individual alarm criterion. The set of alarm criteria may include two or more of a tight-hole alarm criterion, a washout alarm criterion, a packoff alarm criterion, a weight-stacking alarm criterion, a delta-torque alarm criterion, a torque alarm criterion, a rate-of-penetration alarm criterion, a reamer-tension-compression alarm criterion, a running-speed alarm criterion, a drag alarm criterion, and/or a pipe-movement alarm criterion. An alarm event corresponding to an alarm criterion may be detected based on the operating characteristic(s) of the drilling tool matching the set of operating characteristics corresponding to the alarm criterion. Responsive to detection of the alarm event, an alarm for the alarm event may be generated.

公开(公告)号：US11001502B2

公开(公告)日：2021-05-11

申请号：US16848551

申请日：2020-04-14

Applicant: Chevron U.S.A. Inc.

Inventor： Adeola Florence Ojo ,  Dan Xie ,  Yihua Zhang ,  Guan-Dao Lei

IPC: C01B39/48 ,  C07C5/13 ,  B01J29/70 ,  C01B39/02 ,  B01J29/74 ,  C01B39/46 ,  B01J29/80 ,  B01J35/00 ,  B01J29/72 ,  B01J29/76

Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.

公开(公告)号：US11000839B2

公开(公告)日：2021-05-11

申请号：US15866588

申请日：2018-01-10

Applicant: Chevron U.S.A. Inc.

Inventor： Hye Kyung Cho Timken ,  Jeff Johns ,  Rahul Shankar Bhaduri ,  Viorel Duma ,  John V. Heyse

IPC: B01J31/02 ,  B01J31/40 ,  B01D15/18 ,  B01J23/44 ,  B01J38/48 ,  C07C2/58 ,  B01J38/10 ,  B01J23/42 ,  B01J35/10 ,  B01J21/04 ,  B01J20/10 ,  B01J20/16 ,  B01J20/28 ,  B01J23/83 ,  B01J38/08 ,  B01J27/125 ,  B01J31/26

Abstract: Provided is a hydro-regeneration catalyst system, comprising: (a) a first graded bed comprising a guard bed material; and (b) a second graded bed, fluidly connected to the first graded bed, comprising a noble metal catalyst on a support having mesopores and macropores; wherein the noble metal catalyst has an average pore diameter of 20 to 1,000 nm (0.02 to 1 μm), a total pore volume of greater than 0.80 cc/g, and a macropore volume of 0.10 to 0.50 cc/g. Also provided is a guard bed system, comprising: (a) a first guard bed comprising a first adsorbent having 10 μm or larger pores with an average pore diameter of 100 to 1,000 μm; and (b) a second guard bed fluidly connected to the first guard bed, comprising a second adsorbent material having mesopores and macropores with a second average pore diameter of 20 to 1,000 nm.

公开(公告)号：US20210131257A1

公开(公告)日：2021-05-06

申请号：US17083645

申请日：2020-10-29

Applicant: Chevron U.S.A. Inc.

Inventor： Vladimir Crkvenjakov ,  Benjamin Ames Leonard ,  Ian S. Smith ,  Kevin Kaczorowski

IPC: E21B44/00 ,  E21B45/00 ,  E21B47/002

Abstract: Real-time data of drilling operations may be utilized to automatically fingerprint and evaluate their values to create enhanced information of interest. Enhanced information of interest may be comparable to given procedure and may facilitate generation of actionable insight and validation of procedural compliance. Real-time data of drilling operations may be analyzed to generate analysis and graphical comparison of specific sub-step operations that make up activities of interest. These operations may correspond to specific actions a driller on a rig may take to manipulate equipment and may be documented as procedural steps.

公开(公告)号：US20210131250A1

公开(公告)日：2021-05-06

申请号：US17089613

申请日：2020-11-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Amit Kumar SINGH ,  Xinghui LIU ,  Jiehao WANG

IPC: E21B43/26 ,  E21B49/08 ,  E21B33/13

Abstract: One embodiment of a wellbore to fracture connectivity apparatus comprises an opening portion representing an opening in a wellbore for receiving fluid, proppant, or any combination thereof to generate at least one fracture in a formation; a fracture portion representing the at least one fracture in the formation; and a coupling portion representing wellbore to fracture connectivity between the opening portion and the fracture portion. The coupling portion couples the opening portion and the fracture portion.

公开(公告)号：US10996203B2

公开(公告)日：2021-05-04

申请号：US16800661

申请日：2020-02-25

Applicant: Chevron U.S.A. Inc. ,  Triad National Security, LLC

Inventor： Alp Tugrul Findikoglu ,  Taeho Ju ,  Daniel Robert Chapman

IPC: G01N29/46 ,  G01N29/44 ,  G01N29/07 ,  G01N29/22 ,  G01N29/24 ,  G01N29/11

Abstract: Acoustic transducers generate and receive acoustic signals at multiple locations along a surface of rigid structure, wherein longitudinal spacing between transducer locations define measurement zones. Acoustic signals with chosen amplitude-time-frequency characteristics excite multiple vibration modes in the structure within each zone. Small mechanical changes in inspection zones lead to scattering and attenuation of broadband acoustic signals, which are detectable as changes in received signal characteristics as part of a through-transmission technique. Additional use of short, narrowband pulse acoustic signals as part of a pulse-echo technique allows determination of the relative location of the mechanical change within each zone based on the differential delay profiles. For accurate acoustic modeling and simulation, the mesh size, time step, time delay, and time-window size are optimized. Frequency normalization of the Short-Time Fourier Transform of acoustic response output improves experiment-simulation cross-validation. Applications of the method to structures with arbitrarily complex geometries are also demonstrated.

公开(公告)号：US20210125291A1

公开(公告)日：2021-04-29

申请号：US17077223

申请日：2020-10-22

Applicant: Chevron U.S.A. Inc.

Inventor： Mayank Malik ,  Scott Alan Hanson ,  Simon Robert John Clinch

IPC: G06Q50/06 ,  E21B49/00 ,  G01N33/28 ,  G01N15/08

Abstract: A method is described for quantitative pay summaries from mud logs, real-time fluid typing, and to minimize logging expense in high-angle or horizontal wells. The method may include receiving at least one mud log; selecting extraction system type, operating, and drilling parameters for the at least one mud log; determining hydrocarbon parameters such as methane (C1) extraction efficiency, trap response factor (TRF), and relative responses for ethane-pentane (C2-C5); correcting gas-in-mud volume to an earth surface to generate a corrected C1-C5; calculating a gas-to-oil ratio (GOR) from the corrected C1-C5; calculating a reservoir gas volume from the gas-in-mud volume to an earth surface and the GOR; determining pay cutoffs; and generating least one pay summary. The method may be executed by a computer system.

公开(公告)号：US20210097390A1

公开(公告)日：2021-04-01

申请号：US17039403

申请日：2020-09-30

Applicant: Chevron U.S.A. Inc.

Inventor： Baosheng LIANG ,  Chaoshun HU ,  Min LI

IPC: G06N3/08 ,  G01V99/00 ,  G06N3/04

Abstract: A method is described for predicting permeability including receiving a 3-D earth model including a volume of interest; generating 2-D property images; receiving 2-D fracture images; training a physics-guided neural network using the 2-D fracture images; and predicting permeability using the physics-guided neural network applied to the 2-D property images. The method is executed by a computer system.

公开(公告)号：US20210095184A1

公开(公告)日：2021-04-01

申请号：US16635733

申请日：2018-07-31

Applicant: CHEVRON U.S.A. INC.

Inventor： Dustin L. WALKER ,  Gayani PINNAWALA ARACHCHILAGE ,  Nabi NIZAMIDIN ,  Varadarajan DWARAKANATH ,  Guo-Qing TANG ,  Dustin J. LOWRY ,  Tetsuo Art INOUYE ,  Taimur MALIK

IPC: C09K8/60 ,  C09K8/80 ,  C09K8/68 ,  C09K8/74 ,  E21B43/267 ,  E21B43/27

Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.