公开(公告)号：US10724332B2

公开(公告)日：2020-07-28

申请号：US15856834

申请日：2017-12-28

Applicant: CHEVRON U.S.A. INC.

Inventor： Robert C. Henschel, Jr. ,  Samuel E. Herod ,  Paul R. Boriack ,  Shane W. Pfaff ,  Thomas G. Hill, Jr. ,  Jason C. Mailand

IPC: E21B34/06 ,  E21B34/00

Abstract: A subsurface safety valve system for a wellbore is described. The system can include a tubular housing disposed within the wellbore having a cavity running in a longitudinal direction therethrough. The system can also include an electromagnetic device configured to receive electric power to create a magnetic field, and a flapper operative to open and close the cavity in response to the electric power received by the electromagnetic device. The flapper may open in response to the electric power exceeding a first electric power value and remain open in response to the electric power exceeding a second electric power value which is lower than the first electric power value.

公开(公告)号：US10717915B2

公开(公告)日：2020-07-21

申请号：US15677675

申请日：2017-08-15

Applicant: Halliburton Energy Services, Inc. ,  Chevron U.S.A. Inc.

Inventor： Donald Curtis Van Slyke ,  William Walter Shumway

IPC: C09K8/36 ,  E21B7/15 ,  C10M107/02 ,  E21B17/00 ,  C10M171/00 ,  C10M169/02 ,  C10M173/00

Abstract: The disclosure relates to an electrocrushing drilling fluid with an electrocrushing drilling base fluid including a non-polar oil, water, and glycerin. The base fluid may further include a polar oil and an alkylene carbonate. The electrocrushing drilling fluid may further contain at least one additive. The electrocrushing drilling fluid may have a dielectric constant or dielectric strength of at least a set amount, an electric conductivity less than a set amount, or a combination of these properties. The disclosure further relates to an electrocrushing drilling system containing the electrocrushing drilling fluid and an electrocrushing drill bit.

公开(公告)号：US20200226325A1

公开(公告)日：2020-07-16

申请号：US16740066

申请日：2020-01-10

Applicant: Chevron U.S.A. Inc. ,  CALIFORNIA INSTITUTE OF TECHNOLOGY

Inventor： Asitang Mishra ,  Shuxing Cheng ,  Annie Didier ,  Chris Mattmann ,  Hamsa Shwetha Venkataram ,  Grant Lee ,  Wayne Moses Burke ,  Vishal Lall

IPC: G06F40/295 ,  G06N20/00 ,  G06F40/284 ,  G06F40/205

Abstract: A computer-implemented, machine learning-based method of converting an unstructured technical report into a structured technical report includes obtaining an unstructured technical report, tokenizing the unstructured technical report into an n-gram array, identifying and filtering non-interesting n-grams from the first n-gram array based on common language usage of the non-interesting n-grams and a determination that the non-interesting n-grams do not appear on a confirmed technical entity database, generating and displaying a technical entity candidate list from the filtered n-gram array, displaying, obtaining, from a pattern matching model and/or a graphical user interface, an indication that a technical entity candidate is a technical entity of interest, appending the technical entity of interest to the confirmed technical entity database, generating and displaying a structured technical report with the confirmed technical entities and corresponding technical entity value parameters, and iterating the process to refine the pattern matching model.

公开(公告)号：US20200217978A1

公开(公告)日：2020-07-09

申请号：US16724738

申请日：2019-12-23

Applicant: Chevron U.S.A. Inc. ,  The Regents of The University of California

Inventor： Jinsong Chen ,  Gary Michael Hoversten

IPC: G01V1/28 ,  G06N3/08 ,  G06N20/20 ,  G01V1/30 ,  G06F30/20 ,  G06N7/00 ,  G01V1/50 ,  G06F113/08

Abstract: A method is described for deriving high-resolution reservoir properties for a subsurface reservoir. The method may include receiving a seismic dataset; inverting the seismic dataset to generate an ensemble of coarse-scale seismic parameters, wherein the inverting may use one of Bayesian models with Markov Chain Monte Carlo (MCMC) sampling, simulated annealing, partial swarm, or analytic Bayes formulations; receiving fine-scale lithotype models; developing deep learning neural networks based on transfer learning using the fine-scale lithotype models to generate a conditional probability distribution of high-resolution reservoir parameters; generating an ensemble of high-resolution reservoir parameters using the deep learning neural network to condition the ensemble of coarse-scale seismic parameters; and displaying, on a user interface, the ensemble of high-resolution reservoir parameters. The method is executed by a computer system.

公开(公告)号：US20200171471A1

公开(公告)日：2020-06-04

申请号：US16775760

申请日：2020-01-29

Applicant: Chevron U.S.A. Inc.

Inventor： Stacey Ian Zones ,  Tracy Margaret Davis ,  Dan Xie ,  Cong-Yan Chen ,  Howard Steven Lacheen

IPC: B01J29/70 ,  B01J35/10 ,  C07C5/27 ,  C01B39/48 ,  B01J20/28 ,  B01J37/03 ,  B01J37/00 ,  B01J20/30 ,  B01J20/18

Abstract: An aluminosilicate molecular sieve of STW framework type, designated herein as SSZ-110, and having a molar ratio of SiO2/Al2O3 of less than 100, is provided. SSZ-110 may be synthesized using an organic structure directing agent selected from one or more of 1,4-bis(2,3-dimethyl-1H-imidazolium)butane dications, 1,5-bis(2,3-dimethyl-1H-imidazolium)pentane dications, and 1,6-bis(2,3-dimethyl-1H-imidazolium)hexane dications. SSZ-110 may be used in organic compound conversion reactions and sorptive processes.

公开(公告)号：US10671775B2

公开(公告)日：2020-06-02

申请号：US16138736

申请日：2018-09-21

Applicant: Chevron U.S.A. Inc.

Inventor： Tao Sun ,  Morgan Sullivan ,  Michael James Pyrcz ,  Martin Perlmutter ,  Jacob Covault

IPC: G06F30/20 ,  G01V99/00 ,  G06F17/10

Abstract: Depth-averaged flow simulation systems and methods provided herein employ parameterized templates for dynamical depth profiling for at least one step of a simulation. In one illustrative computer-based embodiment, the simulation method includes, for each map point at one given time step: determining a flow template and a sediment concentration template based on depth-averaged flow velocity and depth-averaged sediment concentrations of different classes of grain size for that map point; employing the templates to construct a vertically-distributed flow velocity profile and vertically-distributed sediment concentration profiles for associated classes of grain size for that map point, thereby obtaining 3D flow velocity and 3D sediment concentration fields; using the 3D fields to calculate fluid and sediment fluxes; updating the flow velocity and sediment concentration profiles based on the divergence of the fluxes; integrating the profiles to compute updated depth-averaged flow velocity and sediment concentrations and center of gravity; and solving the depth-averaged flow equations for the next time step.

公开(公告)号：US20200165506A1

公开(公告)日：2020-05-28

申请号：US16777179

申请日：2020-01-30

Applicant: Halliburton Energy Services, Inc. ,  Chevron U.S.A. Inc.

Inventor： Donald Curtis Van Slyke ,  William Walter Shumway

IPC: C09K8/36 ,  E21B10/00 ,  E21B7/15

Abstract: The disclosure relates to an electrocrushing drilling system containing an electrocrushing drill bit with electrodes through which a voltage may be discharged that are at least 0.4 inches apart at their closest spacing and an electrocrushing drilling fluid including a polar oil, a non-polar oil, or a combination thereof and water. The disclosure further relates to methods of electrocrushing drilling using such a system.

公开(公告)号：US10648269B2

公开(公告)日：2020-05-12

申请号：US16123333

申请日：2018-09-06

Applicant: Chevron U.S.A. Inc.

Inventor： Jay Painter ,  Christopher Champeaux ,  Doug Scott

IPC: E21B33/068 ,  E21B17/05 ,  E21B34/02 ,  E21B43/26 ,  E21B21/02

Abstract: A system for distributing pressurized fluid during wellbore operations can include a pressure vessel having a fluid inlet and a fluid outlet. The system can also include a conduit rotatably connected to the fluid outlet of the pressure vessel for coupling to one or more wellbores. Also, a method for distributing pressurized fluid during wellbore operations can include receiving pressurized fluid in a pressure vessel. The method can also include distributing to one or more wellbores the pressurized fluid from the pressure vessel through a conduit rotatably connected to the pressure vessel.

公开(公告)号：US20200115621A1

公开(公告)日：2020-04-16

申请号：US16709872

申请日：2019-12-10

Applicant: Chevron U.S.A. Inc.

Inventor： Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik ,  Logan Jackson ,  Tom Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla

IPC: C09K8/588 ,  E21B43/26 ,  C09K8/88 ,  C09K8/68 ,  C09K8/584 ,  E21B43/20

Abstract: Provided herein are liquid polymer (LP) compositions comprising a synthetic (co)polymer (e.g., an acrylamide (co)polymer), as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of a synthetic (co)polymer (e.g., an acrylamide (co)polymer) of from 50 to 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in oil and gas operations, including enhanced oil recovery.

公开(公告)号：US10604413B2

公开(公告)日：2020-03-31

申请号：US16200729

申请日：2018-11-27

Applicant: Chevron U.S.A. Inc.

Inventor： Dan Xie ,  Adeola Florence Ojo

IPC: C01B39/48 ,  B01J29/70 ,  B01J29/86 ,  C01B39/02 ,  C01B39/12 ,  C01B37/02

Abstract: A molecular sieve of *MRE framework can be synthesized using one or more of (2-hydroxyethyl)trimethylammonium cations, (2-hydroxpropyl)trimethylammonium cations, propyltrimethylammonium cations, and benzyltrimethylammonium cations as a structure directing agent.