公开(公告)号：US10427963B2

公开(公告)日：2019-10-01

申请号：US15010550

申请日：2016-01-29

Applicant: Chevron U.S.A. Inc.

Inventor： Mark Charlesworth ,  Christopher John Kalli ,  David Glynn Thomas ,  Wei Shi ,  Brendan Francis Graham ,  Zachary Mark Aman ,  Eric Freemantle May

IPC: C02F5/02 ,  C02F1/66 ,  C02F1/68 ,  C02F5/10 ,  C02F101/10 ,  C02F103/10 ,  C02F1/24 ,  C02F1/38 ,  C02F103/36

Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.

公开(公告)号：US20190276323A1

公开(公告)日：2019-09-12

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

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.

公开(公告)号：US10399130B2

公开(公告)日：2019-09-03

申请号：US15744358

申请日：2016-07-18

Applicant: Arizona Board of Regents on behalf of Arizona State University ,  CHEVRON U.S.A. INC.

Inventor： Rolf U. Halden ,  Edward Kavazanjian ,  Alizee M. Jenck ,  Nasser Hamdan ,  Thomas Hoelen

IPC: B09C1/08 ,  B09C1/00 ,  C04B14/10 ,  C08B37/00 ,  E02D31/00

Abstract: A method for installing an in situ, low-permeability temporary horizontal barrier at depth for vertical containment of a soil mass including installing a low permeability vertical barrier having walls located to contain a predetermined soil volume, the vertical barrier having a horizontal surface area in a plane perpendicular to its walls; and injecting low permeability reagents capable of forming a temporary horizontal barrier in a pattern suitable for creating a horizontal subsurface barrier joined to all of the vertical barrier walls to form an in situ barrier.

公开(公告)号：US10386512B2

公开(公告)日：2019-08-20

申请号：US15667709

申请日：2017-08-03

Applicant: CHEVRON U.S.A. INC.

Inventor： Prasenjit Roy ,  Kabilan Krishnamurthy ,  Christopher H. Skelt ,  Joseph P. Stefani ,  Dileep K. Tiwary

IPC: G06F19/00 ,  G01V1/28 ,  G01V1/48 ,  G01V1/50

Abstract: A method is described for creating a petro-elastic model including receiving, at a computer processor, well log data; computing in situ rock properties; calculating dry frame moduli for a range of porosities based on a rock physics model such as a modified critical porosity model; performing fluid substitutions and computing elastic properties by statistical sampling for the range of porosities; creating a petro-elastic model in a seismic domain; and identifying and producing target hydrocarbon reservoirs based on the petro-elastic model. The method may be executed by a computer system.

公开(公告)号：US10384198B2

公开(公告)日：2019-08-20

申请号：US16037192

申请日：2018-07-17

Applicant: Chevron U.S.A. Inc.

Inventor： Huping Luo ,  Gordon R. Deppe ,  Albert Eugene Butterfield ,  Allison Amy Evans ,  Jacob Fritz

IPC: B01F15/00 ,  G01F3/08 ,  B01F5/04 ,  B01J31/02 ,  B01F3/08

Abstract: A process for injecting an immiscible liquid stream comprising a co-catalyst for a hydrocarbon conversion into a larger liquid stream that is an ionic liquid catalyst for the hydrocarbon conversion, comprising: a. feeding the immiscible liquid stream towards one or more injection quills in an additive delivery system comprising a transfer drum; b. transferring the immiscible liquid stream from the additive delivery system to the one or more injection quills in a solvent flushing system, fluidly connected downstream from the additive delivery system, wherein the solvent flushing system injects a solvent into one or more additive addition lines in the solvent flushing system; and c. continuously injecting the immiscible liquid stream into the larger liquid stream in an additive injection and mixing system comprising the one or more injection quills.

公开(公告)号：US20190236352A1

公开(公告)日：2019-08-01

申请号：US16376827

申请日：2019-04-05

Applicant: CHEVRON U.S.A. INC.

Inventor： Paul Duke ,  Shuxing Cheng

IPC: G06K9/00 ,  G06K9/62 ,  G06N3/08 ,  G06N3/04

CPC classification number: G06K9/00476 ,  G06K9/00456 ,  G06K9/6218 ,  G06K9/6256 ,  G06K9/6262 ,  G06K9/6271 ,  G06K2209/01 ,  G06N3/04 ,  G06N3/0454 ,  G06N3/08 ,  G06N5/003 ,  G06N20/10 ,  G06N20/20

Abstract: Systems and methods for identifying patterns of symbols in standardized system diagrams are disclosed. Disclosed implementations obtain or synthetically generate a symbol recognition training data set including multiple training images, generate a symbol recognition model based on the symbol recognition training data set, obtain an image comprising a pattern of symbols, group symbols into process loops based on the logical relationships captured by process loop identification algorithm, apply a character classification model to image contours to identify the characters and group characters into tags via hierarchical clustering, and store the identified tags, symbols and identified process loops in a relational database.

公开(公告)号：US20190233715A1

公开(公告)日：2019-08-01

申请号：US16262211

申请日：2019-01-30

Applicant: Chevron U.S.A. Inc. ,  Chevron Oronite Company LLC

Inventor： Dennis A. ALEXIS ,  Gayani PINNAWALA ARACHCHILAGE ,  Varadarajan DWARAKANATH ,  Do Hoon KIM ,  Taimur MALIK ,  Gregory A. WINSLOW ,  Aaron WILHELM

IPC: C09K8/584 ,  C09K8/588

CPC classification number: C09K8/584 ,  C08K5/09 ,  C08K5/37 ,  C08L33/26 ,  C09K8/52 ,  C09K8/588 ,  C09K8/602 ,  C09K8/68 ,  C09K8/88 ,  C09K2208/28 ,  F17D1/16

Abstract: Disclosed are compositions and methods for use in oil and gas operations.

公开(公告)号：US10363518B2

公开(公告)日：2019-07-30

申请号：US15971698

申请日：2018-05-04

Applicant: Chevron U.S.A. Inc.

Inventor： Daniel Chinn ,  Nitesh Bhuwania ,  Shabbir Husain ,  Ronald P. MacDonald ,  Tapan K. Das

IPC: B01D53/14 ,  C10L3/10 ,  E21B43/34

Abstract: Disclosed are systems and methods for increasing oil production in an integrated oil and gas production plant including hydrogen sulfide removal and sour-gas injection into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. A method of retrofitting an integrated plant includes adding a hydrogen sulfide-selective membrane upstream of an amine unit to remove hydrogen sulfide from an associated gas stream and form a permeate stream enriched in hydrogen sulfide and a retentate stream depleted in hydrogen sulfide and enriched in hydrocarbon gases. Less hydrogen sulfide is sent to the amine unit and oil production is higher than in the integrated plant without the hydrogen sulfide-selective membrane.

公开(公告)号：US10363517B2

公开(公告)日：2019-07-30

申请号：US15971643

申请日：2018-05-04

Applicant: Chevron U.S.A. Inc.

Inventor： Nitesh Bhuwania ,  Shabbir Husain ,  Daniel Chinn ,  Ronald P. MacDonald ,  Tapan K. Das

IPC: B01D53/14 ,  C10L3/10 ,  E21B43/34

Abstract: Disclosed are systems and methods for producing oil and gas in a plant while removing hydrogen sulfide and water from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Water-selective membranes are used to debottleneck known systems and methods by removing water from bottlenecked sections of the plant including pretreatment of a sour gas feed to one or more gas processing plants. In other aspects, water-selective membranes are used to debottleneck the pretreatment of an acid gas feed to a Claus unit to convert hydrogen sulfide to sulfur in a gas processing plant. The water-selective membranes pretreat the acid gas feed.

公开(公告)号：US20190227185A1

公开(公告)日：2019-07-25

申请号：US15606082

申请日：2017-05-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Huafeng LIU ,  Donald Arthur MEDWEDEFF

IPC: G01V1/30

Abstract: A method is described for predicting fault seal from a digital pre-stack seismic image including defining a window based on the at least one fault surface; calculating, via the computer processor, a seismic amplitude vs reflection angle (AVA) pattern at each spatial location on the at least one fault surface by obtaining a median value of all amplitudes within the window centered on the spatial location for a given reflection angle, and repeating the calculating for each angle in the digital pre-stack seismic image to create a complete AVA pattern along the fault surface; evaluating the complete AVA pattern along the fault surface to generate a predicted fault seal; and identifying geologic features based on the predicted fault seal. The method may be executed by a computer system.