Inventor
ZHONG XIAOGUANG ALLAN
US44 patents
Patents
44 patentsUS11359448B2Jun 14, 2022
Barrier coating layer for an expandable member wellbore tool
HALLIBURTON ENERGY SERVICES INC20 citations94
US10060217B2Aug 28, 2018
Lattice seal packer assembly and other downhole tools
HALLIBURTON ENERGY SERVICES INC7 citations84
US9580981B2Feb 28, 2017
Liner hanger system
HALLIBURTON ENERGY SERVICES INC17 citations83
US11268335B2Mar 8, 2022
Autonomous tractor using counter flow-driven propulsion
HALLIBURTON ENERGY SERVICES INC3 citations73
US10612345B2Apr 7, 2020
3D printed flapper valve
HALLIBURTON ENERGY SERVICES INC4 citations72
US10138701B2Nov 27, 2018
Swab-resistant downhole tools comprising sealing elements composed of shape memory polymers
HALLIBURTON ENERGY SERVICES INC3 citations72
US12018545B2Jun 25, 2024
Single slip frac tool
HALLIBURTON ENERGY SERVICES INC2 citations71
US11377934B1Jul 5, 2022
Downhole tool with compliant metal-to-metal seal
HALLIBURTON ENERGY SERVICES INC4 citations70
US11156065B2Oct 26, 2021
Minimize trapped fluid impact on expandable liner hangers in geothermal applications
HALLIBURTON ENERGY SERVICES INC4 citations70
US11248437B2Feb 15, 2022
System to control swab off while running a packer device
HALLIBURTON ENERGY SERVICES INC2 citations69
US11990705B2May 21, 2024
Wet-mate connector assembly with a dielectric grease retainer and a stiffening material in a wellbore
HALLIBURTON ENERGY SERVICES INC2 citations68
US12571281B1Mar 10, 2026
Garter spring assembly for sealing devices in well systems
HALLIBURTON ENERGY SERVICES INC0 citations62
US12560360B2Feb 24, 2026
Direct downhole electricity generation in a geothermal well
HALLIBURTON ENERGY SERVICES INC0 citations62
US12385338B2Aug 12, 2025
Autonomous tractor using counter flow-driven propulsion
HALLIBURTON ENERGY SERVICES INC0 citations62
US12385339B2Aug 12, 2025
Internal slip including one or more symmetrical teeth
HALLIBURTON ENERGY SERVICES INC1 citations62
US12163403B1Dec 10, 2024
Flow tube and flapper configuration of a safety valve for a production wellbore
HALLIBURTON ENERGY SERVICES INC0 citations62
US11773686B2Oct 3, 2023
Electrostatic motor control of a sub surface safety valve
HALLIBURTON ENERGY SERVICES INC0 citations62
US11753885B2Sep 12, 2023
Autonomous tractor using counter flow-driven propulsion
HALLIBURTON ENERGY SERVICES INC0 citations62
US11261708B2Mar 1, 2022
Energy transfer mechanism for wellbore junction assembly
HALLIBURTON ENERGY SERVICES INC1 citations62
US11203926B2Dec 21, 2021
Energy transfer mechanism for wellbore junction assembly
HALLIBURTON ENERGY SERVICES INC1 citations62
US12428927B2Sep 30, 2025
Volumetric compensation for sealing performance under large temperature swing conditions
HALLIBURTON ENERGY SERVICES INC0 citations61
US12305476B2May 20, 2025
High performance regular and high expansion elements for oil and gas applications
HALLIBURTON ENERGY SERVICES INC0 citations61
US12031404B2Jul 9, 2024
Single slip frac tool
HALLIBURTON ENERGY SERVICES INC0 citations61
US11692412B2Jul 4, 2023
High performance regular and high expansion elements for oil and gas applications
HALLIBURTON ENERGY SERVICES INC0 citations61
US12553308B2Feb 17, 2026
Sealing assembly employing a deployable spacer
HALLIBURTON ENERGY SERVICES INC0 citations60
US12460504B2Nov 4, 2025
Sealing assembly employing a deployable control band
HALLIBURTON ENERGY SERVICES INC0 citations60
US12215562B2Feb 4, 2025
Seal element with profiled surface for a downhole tool in a wellbore
HALLIBURTON ENERGY SERVICES INC0 citations60
US12134956B2Nov 5, 2024
Liner hanger system
HALLIBURTON ENERGY SERVICES INC1 citations59
US12398624B2Aug 26, 2025
Self-energizing seal for expandable liner hanger
HALLIBURTON ENERGY SERVICES INC0 citations57
US12270281B2Apr 8, 2025
Wiper dart having a bi-diameter wiper cup with protruding ring
HALLIBURTON ENERGY SERVICES INC0 citations57
US12261394B2Mar 25, 2025
Wet-mate connector assembly with a dielectric grease retainer and a stiffening material in a wellbore
HALLIBURTON ENERGY SERVICES INC0 citations57
US12252961B2Mar 18, 2025
Expandable liner hanger assembly having one or more hardened sections
HALLIBURTON ENERGY SERVICES INC1 citations57
US12203335B2Jan 21, 2025
Temperature compensator for improved sealing
HALLIBURTON ENERGY SERVICES INC0 citations57
US12509967B2Dec 30, 2025
Expandable liner hanger assembly having anchor key in dovetail groove on hanger body
HALLIBURTON ENERGY SERVICES INC0 citations56
US11506024B2Nov 22, 2022
Energy transfer mechanism for wellbore junction assembly
HALLIBURTON ENERGY SERVICES INC0 citations52
US11448033B2Sep 20, 2022
Delay coating for wellbore isolation device
HALLIBURTON ENERGY SERVICES INC1 citations52
US11408254B2Aug 9, 2022
Energy transfer mechanism for wellbore junction assembly
HALLIBURTON ENERGY SERVICES INC0 citations52
US12305458B2May 20, 2025
Internal slip design with minimum backlash for packers seal enhancement
HALLIBURTON ENERGY SERVICES INC0 citations50
US11946332B2Apr 2, 2024
Metallic delay barrier coating for swellable packers
HALLIBURTON ENERGY SERVICES INC0 citations49
US11732545B2Aug 22, 2023
Radially expandable anti-extrusion backup ring
HALLIBURTON ENERGY SERVICES INC0 citations49
US11391120B1Jul 19, 2022
Robustness of flapper valve open/close
HALLIBURTON ENERGY SERVICES INC0 citations49
US12509957B1Dec 30, 2025
Partially bonded seals for well systems
HALLIBURTON ENERGY SERVICES INC0 citations47
US12234405B2Feb 25, 2025
Packer elements with low thermal expansion
HALLIBURTON ENERGY SERVICES INC0 citations47
US12385340B2Aug 12, 2025
Reduced backlash sealing/anchoring assembly
HALLIBURTON ENERGY SERVICES INC0 citations44