Inventor

DUELL ALAN B

US34 patents

⚠️ This page may combine multiple inventors who share the name “DUELL ALAN B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DUELL ALAN B

SHELL OIL CO

Lubrication and self-cleaning system for expansion mandrel

Expansion cone for radially expanding tubular members

Forming a wellbore casing while simultaneously drilling a wellbore

Expandable connector

Forming a wellbore casing while simultaneously drilling a wellbore

Pipeline

Expandable tubulars with a radial passage and wall portions with different wall thicknesses

Apparatus for expanding a tubular member

Apparatus for expanding a tubular member

Method of coupling a tubular member to a preexisting structure

Apparatus for expanding a tubular member

Lubrication and self-cleaning system for expansion mandrel

Expansion cone for radially expanding tubular members

Method of creating a casing in a borehole

Apparatus for radially expanding tubular members

Method of coupling a tubular member

Apparatus for expanding a tubular member

Mono-diameter wellbore casing

Apparatus for expanding a tubular member

Forming a wellbore casing while simultaneously drilling a wellbore

Wellbore casing repair

Expandable connector

Concentric pipes expanded at the pipe ends and method of forming

Apparatus for expanding a tubular member

HALLIBURTON CO

Stage cementer with integral inflation packer

Cup type casing packer cementing shoe

Mechanical cementing packer collar

Hydraulic set casing packer

Well stabilization tools and methods

Well stabilization tools and methods

Method and apparatus for the multiple stage cementing of a casing string in a well

Well casing apparatus and method

HALLIBURTON ENERGY SERV INC

System and method for mixing water and non-aqueous materials using measured water concentration to control addition of ingredients

ENVENTURE GLOBAL TECHNOLOGY

Apparatus for radially expanding and plastically deforming a tubular member