公开(公告)号：US20250020054A1

公开(公告)日：2025-01-16

申请号：US18714681

申请日：2022-12-15

Applicant: Chevron U.S.A. Inc. ,  CHEVRON U.S.A. INC.

Inventor： Michael James Fuller ,  Shannon Kirstin Stocks

IPC: E21B47/11 ,  C09K8/70 ,  E21B43/27

Abstract: Methods for assessing the effectiveness of an acid stimulation operation in a hydrocarbon well are described herein. The methods use encapsulated tracer particles comprising a tracer material that is coated with a calcium carbonate shell. Different encapsulated tracer particles are placed into different portions of a well. A subsequent acid stimulation operation dissolves the calcium carbonate shell and releases the tracer material. The different tracer materials indicate the effectiveness of the acid stimulation operation in different portions of the well.

公开(公告)号：US20250129296A1

公开(公告)日：2025-04-24

申请号：US18926143

申请日：2024-10-24

Applicant: CHEVRON U.S.A. INC.

Inventor： Trevor FISHER ,  Ramin ABHARI ,  Fredd PATTERSON

IPC: C10G3/00

Abstract: A method for selective renewable diesel production by hydrodeoxygenation of a lipid to form a product that is further processed with stripping, hydroisomerization and fractionation to produce a renewable diesel.

公开(公告)号：US20250116790A1

公开(公告)日：2025-04-10

申请号：US18482827

申请日：2023-10-06

Applicant: Chevron U.S.A. Inc.

Inventor： Chunling Wu

IPC: G01V1/32 ,  G01V1/28 ,  G01V1/34

Abstract: A method is described for processing distributed acoustic sensing seismic data including receiving, at one or more processors, DAS seismic data, converting the DAS seismic data into pressure data, and processing the pressure data is disclosed. The converting may be done by performing a spatial integral of the DAS seismic data along a DAS cable to get a particle velocity, and performing a spatial derivative of the particle velocity along the DAS cable and a temporal integral to generate the pressure data. The pressure data may then be processed by methods including but not limited to performing reverse time migration to generate a seismic image.

公开(公告)号：US20250116789A1

公开(公告)日：2025-04-10

申请号：US18482821

申请日：2023-10-06

Applicant: Chevron U.S.A. Inc.

Inventor： Chunling Wu

IPC: G01V1/32 ,  G01V1/22

Abstract: A method is described for generating distributed acoustic sensing (DAS) vertical seismic profile (VSP) data including receiving, at one or more processing cores, synthetic DAS acquisition parameters; modeling synthetic pressure-field data; augmenting the synthetic pressure-field data using reciprocity to generate an augmented dataset; sorting the augmented dataset into pressure-field common shot gathers; and converting the pressure-field common shot gathers to strain-rate DAS VSP data. The converting may be done by taking a spatial derivative of pressure along a DAS cable; performing a temporal integral to find particle velocity along the DAS cable; and taking a spatial derivative of the partial velocity along the DAS cable to convert the pressure-field common shot gathers to strain-rate DAS VSP data.

公开(公告)号：US20250109652A1

公开(公告)日：2025-04-03

申请号：US18854964

申请日：2022-05-02

Applicant: Chevron U.S.A. Inc.

Inventor： Hailing An ,  James Nileshwar

IPC: E21B34/02 ,  E21B47/06

Abstract: A method for evaluating performance of a choke valve includes collecting baseline performance data for the choke valve during a first time period; establishing a relationship between a flow area and positions of the choke valve for the first time period; collecting measurements of parameters associated with the choke valve during a second time period; generating a predicted flow area of the choke valve during a second time period;, generating an estimated flow area through the choke valve during the second time period using the relationship established during the first time period; comparing the estimated flow area with the predicted flow area for the second time period; and determining that the performance of the choke valve is no longer within the range of acceptable performance values when a difference between the estimated and predicted flow areas for the second time period falls outside a range of threshold values.

公开(公告)号：US12253641B2

公开(公告)日：2025-03-18

申请号：US18046236

申请日：2022-10-13

Applicant: Chevron U.S.A. Inc.

Inventor： Yonghe J. Sun

IPC: G01V1/28 ,  G01V1/30

Abstract: A method is described for seismic amplitude analysis that uses a set of artificial and individually separable reflectors consistent with dip fields in the subsurface volume of interest to define an AVA basis functions; the AVA basis functions are used in true-3D AVA modeling and true-3D AVA inversion. The inversion result and well logs representative of the subsurface volume of interest are used to train a model to create a rock property prediction model. The method may apply the rock property prediction model to a second seismic image to generate a rock property volume. The method is executed by a computer system.

公开(公告)号：US20250085266A1

公开(公告)日：2025-03-13

申请号：US18747985

申请日：2024-06-19

Applicant: Chevron U.S.A. Inc.

Inventor： David Glynn Thomas ,  Paul Bireta ,  Travis Samuel Elsdon ,  Michael John Marnane

IPC: G01N33/18 ,  G01N1/02 ,  G01N1/40

Abstract: A cartridge sampler for collecting a target species from an environment for subsequent chemical analysis includes removable collection media having at least one molecule sensor thereon. The cartridge sampler includes a means for tagging a geospatial location and time that the fluid samples are provided to the collection media such that the location and time that the fluid samples are provided to the collection media can be later determined. Also disclosed are systems and methods for collecting species from various environments including a subsurface formation, a pipeline, and gaseous, soil or sub-slab, and aqueous environments. The cartridge sampler is fitted on or within a device designed for moving within each environment.

公开(公告)号：US20250065312A1

公开(公告)日：2025-02-27

申请号：US18810971

申请日：2024-08-21

Applicant: Chevron U.S.A. Inc.

Inventor： Stacey I. Zones ,  Cong-Yan Chen

IPC: B01J29/04 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/20 ,  C01B39/48 ,  C10G35/06

Abstract: A novel synthetic crystalline molecular sieve material, designated boron ITQ-21, is provided. The boron ITQ-21 can be synthesized using an N,N-diethyl-5,8-dimethyl-2-azonium bicyclo [3.2.2] nonane cation as a structure directing agent. The boron ITQ-21 may be used in organic compound conversion reactions and/or sorptive processes.

公开(公告)号：US20250059845A1

公开(公告)日：2025-02-20

申请号：US18797180

申请日：2024-08-07

Applicant: Chevron U.S.A. Inc.

Inventor： Wangming Lu ,  Khiem Nguyen ,  William Stephen Averill

IPC: E21B33/035 ,  G01H17/00 ,  G05B23/02

Abstract: A method for remotely evaluating fatigue damage of a subsea wellhead may include obtaining a plurality of values associated with measurements of a parameter associated with the fatigue damage of the subsea wellhead during field operations, wherein the measurements are measured by a sensor device positioned separately from and adjacent to the subsea wellhead; executing an algorithm using the measurements to generate a result; comparing the result of the algorithm with a range of acceptable values; and determining that the subsea wellhead has a potential failure when the result falls outside the range of acceptable values.

公开(公告)号：US12223420B2

公开(公告)日：2025-02-11

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 ,  G01V20/00 ,  G01V99/00 ,  G06N3/04 ,  G06N3/045 ,  G06Q10/04 ,  G06Q50/02

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.