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|
1964-03-03 |
|
Retrievable subsurface well bore apparatus |
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1930-09-29 |
1932-01-26 |
Wilson B Wigle |
Elevating apparatus
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(en)
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1932-02-17 |
1933-07-04 |
Littell James |
Well apparatus
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(en)
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1939-10-24 |
1940-09-10 |
William J Miller |
Mud box
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1946-07-20 |
1950-09-12 |
Donovan B Grable |
Well fluid control
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*
|
1946-09-03 |
1953-06-09 |
Signal Oil & Gas Co |
Method and apparatus for drilling boreholes
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US2668689A
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1947-11-07 |
1954-02-09 |
C & C Tool Corp |
Automatic power tongs
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1948-08-26 |
1952-12-16 |
Cicero C Brown |
Apparatus for cementing well liners
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1950-08-10 |
1952-09-16 |
Guy M Beatty |
Mud box
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1951-05-07 |
1956-05-01 |
Nat Supply Co |
Method of making a composite cutter
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1952-02-09 |
1956-10-02 |
Jr Edward B Williams |
Jetting device for rotary drilling apparatus
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1952-02-09 |
1957-09-03 |
Jr Edward B Williams |
Jetting device for rotary drilling apparatus
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1952-02-12 |
1953-08-25 |
George W Hennigh |
Special purpose electric motor
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1953-02-17 |
1956-03-13 |
Thomas S Mabry |
Means for cementing well liners
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1953-07-15 |
1954-10-19 |
Standard Oil Dev Co |
Device for positioning pipe in a drilling derrick
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1958-05-13 |
1964-12-01 |
Byron Jackson Inc |
Cementing plugs and float equipment
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1960-05-05 |
1962-05-29 |
Harvest Queen Mill & Elevator |
Governor for pipeline apparatus
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1962-06-29 |
1964-03-03 |
Lafayette E Gilreath |
Hydraulic slip setting apparatus
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1962-10-22 |
1965-02-16 |
Lamphere Jean K |
Retrievable drill bit
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1965-09-24 |
1968-04-30 |
Tri State Oil Tools Inc |
Method and apparatus of removing well pipe from a well bore
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1966-06-24 |
1968-07-16 |
Abegg & Reinhold Co |
Well pipe spinning unit
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1967-12-26 |
1970-07-07 |
Byron Jackson Inc |
Combined power tong and backup tong assembly
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1968-11-25 |
1973-07-24 |
C Brown |
Rotary drive connection for casing drilling string
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1969-03-03 |
1971-01-05 |
Cicero C Brown |
Apparatus for rotary drilling of wells using casing as the drill pipe
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1969-05-05 |
1971-03-16 |
Glenn D Johnson |
Constant strain jar
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1969-06-03 |
1970-12-29 |
Schlumberger Technology Corp |
Methods and apparatus for facilitating the descent of well tools through deviated well bores
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1969-06-20 |
1971-02-02 |
Chevron Res |
Method and apparatus for providing continuous foam circulation in wells
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1969-09-11 |
1971-01-05 |
Cicero C Brown |
Apparatus for rotary drilling of wells using casing as drill pipe
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1969-10-03 |
1971-09-07 |
Christensen Diamond Prod Co |
Retractable drill bits
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1969-10-08 |
1971-01-05 |
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Apparatus for rotary drilling of wells using casing as the drill pipe
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1970-01-19 |
1971-09-07 |
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Retractable drill bits
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1970-02-02 |
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1970-09-24 |
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1971-01-29 |
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Retractable drill bit apparatus
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Byron Jackson Inc |
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Werner Ind Inc |
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1974-07-10 |
1976-06-22 |
Gearhart-Owen Industries, Inc. |
Downhole signaling system
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1974-09-03 |
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Vetco Offshore Industries, Inc. |
Buoyant riser system
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Lamb Industries, Inc. |
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1975-04-01 |
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1999-12-22 |
2001-12-04 |
Weatherford/Lamb, Inc. |
Tools and methods for use with expandable tubulars
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2000-02-18 |
2002-04-23 |
Halliburton Energy Services, Inc. |
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2000-02-22 |
2012-04-11 |
Weatherford/Lamb, Inc. |
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2000-03-14 |
2002-07-02 |
Weatherford/Lamb, Inc. |
Wellbore circulation system
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2000-03-27 |
2002-08-06 |
Weatherford/Lamb, Inc. |
Sand removal and device retrieval tool
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CA2311158A1
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2000-06-09 |
2001-12-09 |
Tesco Corporation |
A method for drilling with casing
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2000-07-13 |
2003-04-29 |
Halliburton Energy Services, Inc. |
Method and apparatus for a sand screen with integrated sensors
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2000-07-17 |
2002-06-25 |
Halliburton Energy Services, Inc. |
Method and apparatus for placing and interrogating downhole sensors
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2000-07-18 |
2002-01-24 |
Exxonmobil Upstream Res Co |
Procede pour traiter les intervalles multiples dans un trou de forage
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2000-07-20 |
2002-07-16 |
Schlumberger Technology Corporation |
Apparatus and method for orienting a downhole tool
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2000-08-01 |
2005-02-16 |
Renovus Ltd |
Drilling method
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2001-04-26 |
2004-03-09 |
Floyd R. Sensenig |
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