公开(公告)号：US20170122075A1

公开(公告)日：2017-05-04

申请号：US15409028

申请日：2017-01-18

Applicant: Chevron U.S.A. Inc.

Inventor： Namhyo Kim

IPC: E21B41/00 ,  E21B34/06

CPC classification number: E21B41/0085 ,  E21B34/06 ,  E21B47/00

Abstract: An autonomous downhole power generation system includes a power generation device configured to be disposed in an annular space around a portion of a production tubing. The power generation device is switchable between a power generation mode and a bypass mode. The system further includes a power storage device electrically coupled to the power generation device and configured to store power generated by the power generation device, and a control processor communicatively coupled to the power generation device. The control processor switches the power generation device between the power generation mode and the bypass mode based on a preprogrammed operational protocol.

公开(公告)号：US10781672B2

公开(公告)日：2020-09-22

申请号：US16204889

申请日：2018-11-29

Applicant: CHEVRON U.S.A. INC.

Inventor： Antonio Lazo ,  Namhyo Kim

IPC: E21B43/08

Abstract: A sand control screen assembly having a protective shroud or jacket that provides a controlled offset between the shroud and a filter medium. The sand control screen assembly also includes a base pipe having a drainage layer positioned therearound for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.

公开(公告)号：US20190120027A1

公开(公告)日：2019-04-25

申请号：US16219417

申请日：2018-12-13

Applicant: Chevron U.S.A. Inc.

Inventor： Namhyo Kim ,  Antonio Lazo ,  Elaine Lange

IPC: E21B43/08

CPC classification number: E21B43/086 ,  E21B43/08 ,  E21B43/082 ,  E21B43/088

Abstract: A sand control screen assembly includes a base pipe having multiple first openings through a thickness of the base pipe, where at least one of the first openings is characterized by a non-uniform cross-section, where each first opening has a first portion and a second portion adjacent to the first portion, where the first portion is disposed adjacent to an inner surface of the base pipe, where the second portion is disposed adjacent to an outer surface of the base pipe, where the second portion includes multiple channels, where each channel extends outward and upward relative to the first portion, where each channel includes a wall having a side wall edge and a base wall edge, where an interface surface between the side wall edge and the base wall edge is a planar surface.

公开(公告)号：US20170362920A1

公开(公告)日：2017-12-21

申请号：US15353013

申请日：2016-11-16

Applicant: Chevron U.S.A. Inc.

Inventor： Namhyo Kim ,  Antonio Lazo ,  Elaine Lange

IPC: E21B43/08

CPC classification number: E21B43/086 ,  E21B43/08 ,  E21B43/082 ,  E21B43/088

Abstract: A sand control screen assembly includes a base pipe having openings having non-uniform cross-section. The sand control screen assembly can also include a drainage layer positioned about the base pipe, a filter medium, and a protective shroud. The sand control screen assembly prevents the flow of particulate material of a predetermined size therethrough and allows the flow of production fluids therethrough.

公开(公告)号：US09531303B2

公开(公告)日：2016-12-27

申请号：US14261412

申请日：2014-04-24

Applicant: California Institute of Technology ,  CHEVRON U.S.A. INC.

Inventor： Stewart Sherrit ,  Phillip E. Walkemeyer ,  Jeffrey L. Hall ,  Hyeong Jae Lee ,  Tim Colonius ,  Phillipe Tosi ,  Namhyo Kim ,  Kai Sun ,  Thomas Gary Corbett ,  Alvaro Jose Arrazola

IPC: H01L41/08 ,  H02N2/18 ,  H01L41/113

CPC classification number: H02N2/185 ,  H01L41/1136

Abstract: A flow energy harvesting device having a harvester pipe includes a flow inlet that receives flow from a primary pipe, a flow outlet that returns the flow into the primary pipe, and a flow diverter within the harvester pipe having an inlet section coupled to the flow inlet, a flow constriction section coupled to the inlet section and positioned at a midpoint of the harvester pipe and having a spline shape with a substantially reduced flow opening size at a constriction point along the spline shape, and an outlet section coupled to the constriction section. The harvester pipe may further include a piezoelectric structure extending from the inlet section through the constriction section and point such that the fluid flow past the constriction point results in oscillatory pressure amplitude inducing vibrations in the piezoelectric structure sufficient to cause a direct piezoelectric effect and to generate electrical power for harvesting.

Abstract translation: 具有收割机管道的流动能量收集装置包括：流入口，其接收来自主管的流动，将流入第一管的流出口，以及收集器管内的分流器，其具有联接到流入口的入口部 ，流动收缩部分，其联接到所述入口部分并且定位在所述收割管的中点处，并且具有在所述花键形状的收缩点处具有基本上减小的流动开口尺寸的花键形状，以及联接到所述收缩部分的出口部分。 收割管还可以包括压电结构，该压电结构从入口部分延伸通过收缩部分并且使得流体流过压缩点的振动压力振幅导致压电结构中的振动，足以产生直接的压电效应并产生 电力收割。