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1966-09-20 |
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1918-02-19 |
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1920-03-01 |
1921-02-01 |
Mclean Marrs |
Well-screen
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1921-08-05 |
1923-11-13 |
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Well screen
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1923-03-15 |
1924-04-01 |
Kelly William |
Well strainer
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1925-05-12 |
1930-03-18 |
Elihu C Wilson |
Well screen
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1940-11-18 |
1943-01-19 |
Leone C Rogers |
Metal wool pad
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1944-01-26 |
1946-05-28 |
Nobs Chemical Company |
Well screen
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1944-05-27 |
1945-12-25 |
Kenneth A Wright |
Oil well screen
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1945-01-06 |
1951-02-06 |
Myron M Kinley |
Insert strainer plug for well casings
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1955-12-23 |
1957-07-09 |
Babin Benton Paul |
Soil moistening apparatus
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1957-02-01 |
1961-04-25 |
Montgomery K Miller |
Well screening method and device therefor
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1963-06-27 |
1965-04-13 |
Donald W Fether |
Well liner with inwardly convergent passages
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1963-08-28 |
1965-10-26 |
Griffin Wellpoint Corp |
Well point construction
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1965-01-25 |
1967-01-24 |
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Sand shield-filter
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1965-02-03 |
1967-05-30 |
Servco Co |
Apparatus for production of fluids from wells
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1966-05-03 |
1969-08-21 |
Rheinische Braunkohlenw Ag |
Filter tube with a base made of asbestos cement or plastic
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1981-01-06 |
1982-03-15 |
Cochev |
Asbestos cement filter for pipe wells
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1984-12-31 |
1988-12-20 |
Texaco Canada Resources Ltd. |
Method and apparatus for producing viscous hydrocarbons utilizing a hot stimulating medium
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1986-01-31 |
1987-11-17 |
S-Cal Research Corp. |
Heavy oil recovery process
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1992-09-28 |
1994-05-10 |
Halliburton Company |
Foil wrapped base pipe for sand control
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1993-05-25 |
1997-09-09 |
Pall Corporation |
Filter for subterranean wells
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1994-06-30 |
1996-06-18 |
Quality Tubing, Inc. |
Preperforated coiled tubing
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1994-07-21 |
1998-11-17 |
Santrol, Inc. |
Well treatment fluid compatible self-consolidating particles
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1994-11-30 |
1999-03-10 |
Petroline Wellsystems Ltd |
Improvements in and relating to valves
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1995-05-12 |
1996-09-03 |
Texaco Inc. |
Prepacked screen
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1995-11-08 |
2004-07-15 |
Shell Int Research |
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1996-03-04 |
1998-01-27 |
American Metal Fibers |
Radial-flow filter and method of manufacture
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1996-06-12 |
1999-12-28 |
Oiltools International B.V. |
Filter for subterranean use
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1996-09-30 |
1998-10-06 |
Cordewener; Charles H. |
Permeable conduits for disbursing fluids
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1997-09-05 |
1999-03-16 |
United States Filter Corporation |
Well casing assembly with erosion protection for inner screen
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1997-12-11 |
1999-06-17 |
Petroleum Recovery Institute |
Oilfield in situ hydrocarbon upgrading process
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1999-06-30 |
2001-03-20 |
Harout Ohanesian |
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1999-06-30 |
2003-06-24 |
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Water well filter apparatus
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1999-08-25 |
2001-05-03 |
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2000-01-29 |
2005-11-17 |
Hochtief Ag |
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2000-04-26 |
2001-04-09 |
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2000-05-30 |
2003-02-04 |
Purolator Facet, Inc. |
Welded particle control screen assemblies
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2000-05-31 |
2002-01-13 |
Shell Int Research |
Tracer release system for monitoring fluid flow ina well
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2000-07-21 |
2005-04-13 |
Sinvent AS |
Combined liner and matrix system
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2002-06-13 |
2004-03-09 |
Halliburton Energy Services, Inc. |
Methods of consolidating formations or forming chemical casing or both while drilling
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2002-07-16 |
2006-05-23 |
Santrol, Inc. |
Downhole chemical delivery system for oil and gas wells
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2002-10-31 |
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2003-03-31 |
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2003-05-15 |
2004-11-25 |
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2003-06-26 |
2006-05-23 |
Halliburton Energy Services, Inc. |
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2003-09-16 |
2005-03-17 |
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Method and apparatus for temporarily maintaining a downhole foam element in a compressed state
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2003-12-03 |
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Exxonmobil Upstream Res Co |
well drilling rig
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2003-12-10 |
2007-08-21 |
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Wellbore screen
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2004-06-30 |
2006-07-03 |
Inst Energiteknik |
Tracer release system in a fluid stream
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2004-07-15 |
2007-03-27 |
Weatherford/Lamb, Inc. |
Method and apparatus for downhole artificial lift system protection
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2005-09-26 |
2006-02-27 |
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Borehole Filter
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2005-09-30 |
2011-02-22 |
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Wellbore apparatus and method for completion, production and injection
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2006-04-25 |
2007-10-25 |
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2006-05-04 |
2009-03-03 |
Purolator Facet, Inc. |
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2006-07-06 |
2009-03-31 |
Schlumberger Technology Corporation |
Well servicing methods and systems employing a triggerable filter medium sealing composition
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2006-10-03 |
2009-02-06 |
Inst Francais Du Petrole |
CATALYTIC CREPINE FOR THE CONVERSION OF HEAVY RAW INTO THE WELL
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2007-04-25 |
2008-10-29 |
NV Bekaert SA |
A method to provide coil shaved metal fibers
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2007-05-22 |
2008-11-27 |
Schlumberger Technology Corporation |
Downhole screen assembly
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2007-09-06 |
2011-01-04 |
Absolute Completion Technologies Ltd. |
Wellbore fluid treatment tubular and method
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2009-07-10 |
2013-10-29 |
Schlumberger Technology Corporation |
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2010-01-22 |
2013-10-29 |
Schlumberger Technology Corporation |
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2010-01-22 |
2013-06-18 |
Schlumberger Technology Corporation |
Flow control system with sand screen
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2010-04-05 |
2011-01-27 |
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MEMBRANE FILTER FOR CLEANING DRINKING WATER
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2010-04-20 |
2011-10-20 |
Schlumberger Technology Corporation |
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2010-06-11 |
2016-01-20 |
Эбсолют Кэмплишн Текнолоджиз, Лтд. |
Well strainer with tracer for fluid detection
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2010-06-11 |
2017-10-18 |
Absolute Completion Technologies Ltd. |
Wellbore fluid treatment tubular and method
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