Inventor

O'BRIEN ROBERT S

US50 patents

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

O'BRIEN ROBERT S

BAKER HUGHES INC

Bead pack brazing with energetics

Variable downhole choke

Expandable wellbore liner

Multi-position valve for fracturing and sand control and associated completion methods

One trip cemented expandable monobore liner system and method

Packer setting device for high-hydrostatic applications

Swelling packer element with enhanced sealing force

One trip cemented expandable monobore liner system and method

Expandable tubular connection

Packer setting device for high hydrostatic applications

Slip energized by longitudinal shrinkage

One trip cemented expandable monobore liner system and method

One trip cemented expandable monobore liner system and method

Slip energized by longitudinal shrinkage

Method for reducing diameter reduction near ends of expanded tubulars

Resettable selective locking device

One trip cemented expandable monobore liner system and method

Elastomeric element installation tool and method

Extended reach anchor

Piezoelectric resonant power generator

O'BRIEN ROBERT S

Reduced wear position indicating subterranean tool

Well system with annular space around casing for a treatment operation

Subterranean valve operated by string relative movement

Two-way actuator and method

Flow control devices including a sand screen having integral standoffs and methods of using the same

Completion systems including reduced stress expandable control lines

Frac sleeve system and method

ALLEN JASON A

Selectively disengagable sealing system

Wellbore completion apparatus and methods utilizing expandable inverted seals

Selectively disengagable sealing system

Multi-zone completion assembly installation and testing

Completion assembly with bypass for reversing valve

Apparatus and methods for selectively treating production zones

OBRIEN ROBERT S

Completion system and method for completing a wellbore

Apparatus and methods setting a string at particular locations in a wellbore for performing a wellbore operation

Apparatus and methods for locating a particular location in a wellbore for performing a wellbore operation

Mechanically-set devices placed on outside of tubulars in wellbores

HAMMER AARON C

Multizone retrieval system and method

Completion systems with a bi-directional telemetry system

Completion systems with a bi-directional telemetry system

BAKER HUGHES A GE CO LLC

Interventionless pressure operated sliding sleeve

Hydraulically opened and ball on seat closed sliding sleeve assembly

Straddle frac tool with pump through feature apparatus and method

MURRAY DOUGLAS J

Multi-position valve for fracturing and sand control and associated completion methods

Multi-position valve for fracturing and sand control and associated completion methods

COCHRAN TRAVIS E

Wellbore strings containing expansion tools

ADAM MARK K

One trip cemented expandable monobore liner system and method

HART DANIEL R

Tool with multisize segmented ring seat

BISHOP DAVID S

Selectively disengagable sealing system

SMITH JAMES A

Crossover tool, method of making a crossover tool and two parts of a two-part crossover tool