公开(公告)号：US09828831B2

公开(公告)日：2017-11-28

申请号：US14765191

申请日：2013-06-06

Applicant: PETROCHINA COMPANY LIMITED

Inventor： He Liu ,  Xiaohan Pei ,  Fuchao Sun ,  Lichen Zheng ,  Qinghai Yang ,  Yang Gao

IPC: E21B34/00 ,  E21B34/12 ,  E21B43/20 ,  E21B34/14

CPC classification number: E21B34/12 ,  E21B34/14 ,  E21B43/20 ,  E21B2034/007

Abstract: A bridge concentric continuously adjustable water regulator comprising: an outer tube; an adjusting sleeve disposed in the outer tube; a concentric valve connected below the adjusting sleeve, with a center of circle of the concentric valve being concentric to the outer tube; a water outlet which runs through a side wall of the outer tube and is connected to the concentric valve; a lower sealed section which is disposed in the outer tube and is below the concentric valve and the water outlet; and a bridge passage disposed in the side wall of the outer tube and outside the concentric valve and the lower sealed section.

公开(公告)号：US11387452B2

公开(公告)日：2022-07-12

申请号：US16556449

申请日：2019-08-30

Applicant: PetroChina Company Limited

Inventor： Jianming Li ,  Xu Jin ,  He Liu ,  Xiaoqi Wang ,  Xiaodan Liu ,  Hang Jiao

IPC: C01G23/00 ,  H01M4/485 ,  H01M10/0525 ,  H01M4/02

Abstract: The present invention provides a linear porous lithium titanate material, preparation and product thereof. The material comprises a lithium titanate material having a crystal phase which is a spinel type, wherein the lithium titanate material has a linear structure having an aspect ratio of greater than 10, and the linear lithium titanate material has a porous structure; wherein the linear porous lithium titanate material has a structure composed of a plurality of particles having an oriented growth direction. The material has a long-axis structure which facilitates the effective migration of electrons, a porous structure which facilitates the rapid intercalation and deintercalation process of lithium ions, sodium ions or potassium ions, and a large specific surface area which facilitates the contact area between the electrolyte solution and the electrodes and reduces the current density, thus is excellent in a rapid charge-discharge performance of the battery.

公开(公告)号：US09874089B2

公开(公告)日：2018-01-23

申请号：US14765287

申请日：2013-06-06

Applicant: PETROCHINA COMPANY LIMITED

Inventor： He Liu ,  Xiaohan Pei ,  Fuchao Sun ,  Lichen Zheng ,  Qinghai Yang ,  Yang Gao

IPC: E21B47/10 ,  E21B4/06 ,  E21B43/20 ,  E21B23/00

CPC classification number: E21B47/10 ,  E21B4/06 ,  E21B23/00 ,  E21B43/20

Abstract: A bridge concentric direct-reading testing and adjusting instrument, comprising a cable head connected to a pressure sensor; a supporting mechanism having a pair of supporting arms; a sliding power mechanism including a power motor, a spring, an impact hammer and a one-way clutch assembly, the impact hammer slidably connected to the power motor to be rotated along with rotation of the power motor, a lower end of the impact hammer detachably connected to the one-way clutch assembly, and the one-way clutch assembly connecting the supporting arms via a transmission assembly to control opening and closing of the supporting arms; a flowmeter; and an adjusting actuator including an adjusting motor, an adjusting connector and an adjusting arm, the adjusting arm used for adjusting a waterflooding flow rate through rotation of the adjusting arm.

公开(公告)号：US11858827B2

公开(公告)日：2024-01-02

申请号：US16556224

申请日：2019-08-29

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Xu Jin ,  Jianming Li ,  He Liu ,  Hang Jiao ,  Xiaoqi Wang ,  Liang Sun ,  Xiaodan Liu

IPC: C01G23/00 ,  C01D15/00 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C01G23/005 ,  C01D15/00 ,  C01G23/001 ,  B82Y30/00 ,  B82Y40/00

Abstract: A preparation method of a nanotube hierarchically structured lithium titanate includes the steps of: S1. dispersing a titanium source into an aqueous solution containing lithium hydroxide and hydrogen peroxide and stirring to obtain a mixed solution; S2. subjecting the mixed solution obtained in step S1 to a reaction by heating to obtain a precursor having a nanowire-like structure; S3. subjecting the precursor having a nanowire-like structure obtained in step S2 to separation and drying; S4. subjecting the precursor having a nanowire-like structure after separation and drying to a low-temperature annealing treatment; S5. subjecting the precursor having a nanowire-like structure after the low-temperature annealing treatment to a liquid thermal reaction to obtain the nanotube hierarchically structured lithium titanate. The method includes a simple process and easily controllable process parameters, and may be easily scaled-up for industrial production.

公开(公告)号：US11565944B2

公开(公告)日：2023-01-31

申请号：US16556211

申请日：2019-08-29

Applicant: PETROCHINA COMPANY LIMITED

Inventor： Jianming Li ,  Xu Jin ,  He Liu ,  Xiaodan Liu ,  Xiaoqi Wang ,  Liang Sun

IPC: C01G23/053 ,  B01J21/06 ,  B01J35/00 ,  C01G23/00 ,  H01M4/485 ,  B82Y40/00

Abstract: A process for preparing a titanic acid salt, titanic acid, and titanium oxide having a controllable particle size and a hierarchical structure, wherein the process includes the steps of: preparing a titanium-containing peroxo-complex solution; adding a basic metal compound to the titanium-containing peroxo-complex solution to form a mixture solution; adding one of polyvinyl alcohol, hydroxypropyl methyl cellulose, and polyethylene glycol to the mixture solution to form a precursor dispersion; and subjecting the precursor dispersion to a solvothermal reaction to obtain the titanic acid salt having a hierarchical structure. The process for preparing a titanic acid salt, titanic acid, and titanium oxide having a controllable particle size and a hierarchical structure, can not only realize the regulation of morphology and particle diameter of constituent units in the hierarchical structure, but also can achieve the regulation of particle size in the hierarchical structure.

公开(公告)号：US20200075944A1

公开(公告)日：2020-03-05

申请号：US16556449

申请日：2019-08-30

Applicant: PetroChina Company Limited

Inventor： Jianming Li ,  Xu Jin ,  He Liu ,  Xiaoqi Wang ,  Xiaodan Liu ,  Hang Jiao

IPC: H01M4/485 ,  H01M10/0525 ,  C01G23/00

Abstract: The present invention provides a linear porous lithium titanate material, preparation and product thereof. The material comprises a lithium titanate material having a crystal phase which is a spinel type, wherein the lithium titanate material has a linear structure having an aspect ratio of greater than 10, and the linear lithium titanate material has a porous structure; wherein the linear porous lithium titanate material has a structure composed of a plurality of particles having an oriented growth direction. The material has a long-axis structure which facilitates the effective migration of electrons, a porous structure which facilitates the rapid intercalation and deintercalation process of lithium ions, sodium ions or potassium ions, and a large specific surface area which facilitates the contact area between the electrolyte solution and the electrodes and reduces the current density, thus is excellent in a rapid charge-discharge performance of the battery.