Inventor

MURRAY DOUGLAS J

US56 patents

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

MURRAY DOUGLAS J

BAKER HUGHES INC

Downhole method using multiple plugs

Self energized packer

Frac system without intervention

Downhole flow control devices

Method for multi-lateral completion and cementing the juncture with lateral wellbores

Downhole flow control devices

Casing valve

Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means

Self boosting packing element

Well tool with sealing means

Self-energized downhole tool

Method and apparatus for completing a wellbore

Method and apparatus for completing a wellbore

Method and apparatus for locating and re-entering one or more horizontal wells using whipstock with sealable bores

Electric pressure actuating tool and method

Disappearing plug

Expandable tubing joint and through-tubing multilateral completion method

Downhole flow control devices

Downhole flow control devices

Motor drive actuator for downhole flow control devices

Electro hydraulic downhole control device

Horizontal well circulation tool

Method for sealing the junctions in multilateral wells

Overpull shifting tool

Well tool with sealing means

Completion method for fracturing and gravel packing

Electric pressure actuating tool and method

Drillable junction joint and method of use

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

Tubing retrievable injection valve

Downhole flow control devices

Downhole flow control devices

Method and apparatus for securing and releasing continuous tubing in a subterranean well

Method and apparatus for selectively shifting a tool member

Self-lubricating swage

Swellable packer with back-up systems

Sand barrier for a level 3 multilateral wellbore junction

Packer system and method

Self energized backup system for packer sealing elements

Circumferentially loaded slip-type overshot retrieval tool

Method and apparatus for creating a cemented lateral junction system

Time release downhole trigger

Mechanical manipulation tool with hydraulic hammer

MURRAY DOUGLAS J

Combination stepladder and load lifting apparatus

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

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

WORLDCOM INC

System and method for notification upon successful message delivery

DIMENSIONAL IND INC

Wall frames with interlocking clips

LYNDE GERALD D

Arrangement and method for sending and/or sealing cement at a liner hanger

AVANT MARCUS A

Flexible collet anchor assembly with compressive load transfer feature