LexDanaLexDanabeta
Inventor

James W. Estep

Inventor
Houston, TX, US

Overview

19→
Patents
1999–2012
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 19 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling57%
G01VGeophysics27%
Y10TTechnical subjects covered by former us classification10%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids7%
PatentTitleYear
8,333,231'Braze or solder reinforced moineu stator'20127,950,914'Braze or solder reinforced Moineau stator'20117,416,026'Apparatus for changing flowbore fluid temperature'20087,195,083'Three dimensional steering system and method for steering bit to drill borehole'20077,172,038'Well system'20077,114,582'Method and apparatus for removing cuttings from a deviated wellbore'20067,059,881'Spoolable composite coiled tubing connector'20066,923,273'Well system'20056,843,332'Three dimensional steerable system and method for steering bit to drill borehole'20056,840,337'Method and apparatus for removing cuttings'20056,761,574'Coiled tubing connector'20046,712,146'Downhole assembly releasable connection'20046,607,044'Three dimensional steerable system and method for steering bit to drill borehole'20036,598,687'Three dimensional steerable system'20036,543,532'Electrical surface activated downhole circulating sub'20036,367,366'Sensor assembly'20026,349,763'Electrical surface activated downhole circulating sub'20026,318,470'Recirculatable ball-drop release device for lateral oilwell drilling applications'20015,857,531'Bottom hole assembly for directional drilling'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2008Patents assigned to HALLIBURTON ENERGY SERV INC (16)· patent assignee history
1999–2008Based in Houston, TX, US· patent location history
2011–2012Based in Spring, TX, US· patent location history
2012Patents assigned to ESTEP JAMES W (1)· patent assignee history
2012Patents assigned to HOOPER MICHAEL E (1)· patent assignee history
2012Patents assigned to QUANTZ WAYNE (1)· patent assignee history
2012Patents assigned to SCHLUMBERGER TECHNOLOGY CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HALLIBURTON ENERGY SERV INC161999–2008
ESTEP JAMES Wself12012
HOOPER MICHAEL E12012
QUANTZ WAYNE12012
SCHLUMBERGER TECHNOLOGY CORP12012
Locations
LocationPatentsSpan
Houston, Texas, US171999–2008
Spring, Texas, US22011–2012