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：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：US10890052B2

公开(公告)日：2021-01-12

申请号：US16053568

申请日：2018-08-02

Applicant: PetroChina Company Limited

Inventor： Xiaohan Pei ,  Qinghai Yang ,  Dongbai Shan ,  Tao Li ,  Eryang Ming ,  Ming Li

IPC: E21B41/00 ,  E21B43/20 ,  H02N2/18

Abstract: A downhole power generation device and a separate-zone waterflooding device, which relate to the field of oil and gas development technologies. The downhole power generation device comprises a housing extended axially and a rotating wheel, a striking mechanism and a piezoelectric bimorph provided in the housing. The piezoelectric bimorph is axially extended and circumferentially distributed around an axis of the housing, with one end of the piezoelectric bimorph being fixed. The rotating wheel is in transmission connection with the striking mechanism and can be rotated by fluid to drive the striking mechanism to rotate. The striking mechanism can touch the other end of the piezoelectric bimorph during rotation so that the piezoelectric bimorph vibrates back and forth.