公开(公告)号：US09874091B2

公开(公告)日：2018-01-23

申请号：US15655129

申请日：2017-07-20

Applicant: Chevron U.S.A. Inc.

Inventor： Melvin Clark Thompson

IPC: E21B47/12 ,  E21B17/00

CPC classification number: E21B47/12 ,  E21B17/003 ,  H01P1/268 ,  H01P3/082 ,  H01P5/184

Abstract: A downhole energy transmission system is described. The system can include a tubing string having a number of tubing pipe disposed within an annulus formed by a casing string disposed within a wellbore, where the tubing string has at least one wall forming a cavity. The system can also include a remote electrical device disposed within the cavity of the tubing string at a first location. The system can further include a first stripline cable disposed on an outer surface of the tubing string, where the first stripline cable transmits a first electromagnetic directional traveling wave received from an energy source. The system can also include a second stripline cable disposed adjacent to the first stripline cable at the first location, where the second stripline cable is electrically coupled to the remote electrical device.

公开(公告)号：US20170363531A1

公开(公告)日：2017-12-21

申请号：US15186694

申请日：2016-06-20

Applicant: CHEVRON U.S.A. INC.

Inventor： Marina Hruska ,  Mark Tadeusz Skalinski

IPC: G01N15/08 ,  G01V3/38

CPC classification number: G01N15/088 ,  G01V3/20 ,  G01V3/38

Abstract: A system and method for estimating porosity distribution in a region of interest of a geologic formation from a resistivity image log representative of the geologic formation is disclosed. A normalization factor representative of a rock matrix based on a first resistivity value and an image point factor based on a second resistivity value are calculated and compared to identify points in the resistivity image log that correspond to the secondary porosity. The normalization factor and image point factor are recalculated based on a different first resistivity value and a different second resistivity value as necessary to identify additional points in the resistivity image log that correspond to the secondary porosity until a termination criterion is met. The method may further include a porosity calibration operation and one or more artifact corrections.

公开(公告)号：US20170356274A1

公开(公告)日：2017-12-14

申请号：US15622662

申请日：2017-06-14

Applicant: Chevron U.S.A. Inc.

Inventor： Melvin Clark Thompson ,  David William Beck

IPC: E21B41/00 ,  E21B43/14 ,  E21B33/129 ,  E21B33/12

CPC classification number: E21B41/00 ,  E21B17/003 ,  E21B17/028 ,  E21B33/12 ,  E21B43/14 ,  E21B47/12

Abstract: A system, method and device may be used to provide power and monitor conditions in a borehole. Well tubing and casing act as a conductive pair for delivering power wirelessly to isolated zones defined between packer elements. Data signals are similarly transmitted. The packer elements include magnetic toroidal cores for power and signal transmission via inductively coupling.

公开(公告)号：US09815704B2

公开(公告)日：2017-11-14

申请号：US15254011

申请日：2016-09-01

Applicant: Chevron U.S.A. Inc.

Inventor： Dan Xie

IPC: C01B39/30 ,  B01J29/50 ,  B01J37/00 ,  C01B39/02

CPC classification number: C01B39/305 ,  B01J29/50 ,  B01J37/0018 ,  C01B39/026

Abstract: A method is disclosed for preparing zeolite SSZ-98 using 1,3-dicyclohexylimidazolium cations as a structure directing agent.

公开(公告)号：US09803132B2

公开(公告)日：2017-10-31

申请号：US14768874

申请日：2014-02-18

Applicant: CHEVRON U.S.A. INC.

Inventor： Michael James Fuller ,  Maricel Marquez ,  William David Norman

IPC: E21B43/267 ,  C09K8/80 ,  C09K8/68 ,  E21B43/26

CPC classification number: C09K8/685 ,  C09K8/80 ,  C09K2208/10 ,  E21B43/26 ,  E21B43/267

Abstract: A method includes placing a treatment fluid including a crosslinked gel in a wellbore penetrating a subterranean formation, the crosslinked gel including a gelling agent and a borate crosslinking agent, de-crosslinking a portion of the crosslinked gel, the de-crosslinking induced by a sufficient change in operating pressure, the de-crosslinking providing a release of active sites on the borate crosslinking agent and reducing the viscosity of the treatment fluid, and providing a borate-affinity agent to capture the released active sites on the borate crosslinking agent. A fracturing fluid includes a gelling agent, a borate crosslinking agent, a latent borate-affinity agent, and a proppant.

公开(公告)号：US20170305752A1

公开(公告)日：2017-10-26

申请号：US15649032

申请日：2017-07-13

Applicant: Chevron U.S.A. Inc.

Inventor： Stacey Ian Zones

IPC: C01B39/04 ,  C01B39/26 ,  C01B39/12 ,  C01B39/00 ,  C01B37/02 ,  B01J29/86 ,  B01J20/18 ,  B01J29/70 ,  B01J29/18 ,  B01J29/04 ,  B01J20/30 ,  C01B39/48 ,  B01J39/14

CPC classification number: C01B39/04 ,  B01J20/18 ,  B01J20/3057 ,  B01J29/041 ,  B01J29/047 ,  B01J29/18 ,  B01J29/70 ,  B01J29/86 ,  B01J39/14 ,  C01B37/02 ,  C01B39/00 ,  C01B39/12 ,  C01B39/265 ,  C01B39/48

Abstract: Crystalline molecular sieves and their synthesis using quaternary N-methyl-diisoalkylammonium cations as organic structure directing agents are disclosed. The structure directing agent has the following structure (1): in which R1 is selected from hydrogen, a methyl group, an ethyl group, a propyl group, and a hydroxymethyl group; and R2, R3, R4 and R5 are independently selected from a methyl group, an ethyl group, and a propyl group.

公开(公告)号：US09796936B2

公开(公告)日：2017-10-24

申请号：US14848917

申请日：2015-09-09

Applicant: Chevron U.S.A. Inc.

Inventor： Guan-Dao Lei ,  Subhasis Bhattacharya ,  Axel Brait

IPC: C10G67/16 ,  C10G67/00 ,  C10G67/04 ,  C10M101/00 ,  C10M177/00 ,  C10G53/06 ,  C10G73/06 ,  C10G67/02 ,  C10M101/02

CPC classification number: C10G67/16 ,  C10G53/06 ,  C10G67/00 ,  C10G67/0409 ,  C10G67/0418 ,  C10G67/0445 ,  C10G73/06 ,  C10G2300/1096 ,  C10G2400/08 ,  C10M101/00 ,  C10M177/00

Abstract: A process for heavy base oil production, comprising: a. performing an aromatic extraction of a first hydrocarbon feed to produce an aromatic extract, and a waxy raffinate; b. mixing the aromatic extract with a second hydrocarbon feed to make a mixed feed having greater than 2,000 wt ppm sulfur; c. feeding the mixed feed to a hydroprocessing unit to produce a heavy API Group II base oil having a kinematic viscosity at 70° C. from 22.6 to 100 mm2/s. An integrated refinery process unit for making heavy base oils, comprising: a. an aromatic extraction unit fluidly connected to a solvent dewaxing unit and a hydroprocessing unit; b. a first line from the aromatic extraction unit, that feeds an aromatic extract to a second hydrocarbon feed to make a mixed feed having greater than 2,000 wt ppm sulfur; and c. a connection that feeds the mixed feed to the hydroprocessing unit.

公开(公告)号：US20170291823A1

公开(公告)日：2017-10-12

申请号：US15415983

申请日：2017-01-26

Applicant: Chevron U.S.A. Inc.

Inventor： Dan Xie

IPC: C01B39/48

CPC classification number: C01B39/305 ,  B01J29/50 ,  C01B39/026

Abstract: A method is disclosed for synthesizing molecular sieve SSZ-98 using a structure directing agent selected from one or more of 1,1-diethylpyrrolidinium cations, 1-butyl-1-methylpiperidinium cations, 1,1-diethyl-4-methylpiperidinium cations, and 8-(pyridin-2-yl)-5,8-diazaspiro[4.5]decan-5-ium cations.

公开(公告)号：US20170285215A1

公开(公告)日：2017-10-05

申请号：US15472897

申请日：2017-03-29

Applicant: Chevron U.S.A. Inc.

Inventor： Haijing Wang ,  Boqin Sun ,  Scott J. Seltzer ,  John S. Zintsmaster ,  Hussein Alboudwarej

IPC: G01V3/32 ,  G01R33/46 ,  G01R33/31

CPC classification number: G01R33/46 ,  G01N24/081 ,  G01R33/305 ,  G01R33/31 ,  G01R33/448

Abstract: To measure the phase behavior of a fluid in a porous medium such as a tight gas shale, one illustrative method involves: (a) loading the fluid into a sample cell containing the porous medium; (b) setting a pressure and a temperature for the fluid in the sample cell; (c) applying an RF pulse sequence to the fluid in the sample cell to acquire an NMR signal; (d) deriving from the NMR signal an NMR parameter distribution that depends on the pressure and the temperature; (e) determining whether a fluid phase is present based on the NMR parameter distribution; (f) repeating operations (c) through (f) to determine the presence or absence of the fluid phase at multiple points along a pressure-temperature path that crosses a phase boundary; and (g) providing an estimated location of the phase boundary based on the presence or absence of the fluid phase at said points.

公开(公告)号：US20170276813A1

公开(公告)日：2017-09-28

申请号：US15078020

申请日：2016-03-23

Applicant: CHEVRON U.S.A. INC.

Inventor： Yonghe J. SUN ,  Craig S. HUBER

IPC: G01V1/28

CPC classification number: G01V1/303

Abstract: A method for seismic imaging of a subsurface volume of interest may include an imaging technique such as reverse time migration which uses a conditioned velocity model that replaces at least one sharp velocity transition with a gradual velocity transition including a velocity overshoot layer. The method may be performed by a computer system.