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2002-06-19
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2001-09-24
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2003-04-16
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2003-10-29
Process for reducing the production of water in oil wells
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2002-10-23
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2000-02-14
Method and apparatus for conveying fluids, particularly useful with respect to oil wells
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2004-01-14
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2003-09-25
Procedimiento para marcar aceite mineral.
HK1054259B
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2005-04-08
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Method and device to stabilise the production of oil wells
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2008-09-03
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2003-06-18
A carburising method and an apparatus therefor
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Template construction for drilling subsea wells for oil and gas
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2000-12-15
Газлифтный подъемник рылова б.м. и к
GB2358036B
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2002-12-11
Assembly and floatation method for drilling drivepipe
AU3684000A
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2001-04-23
Method for de-waxing gas and oil wells and corresponding installation
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2000-11-15
Газлифтный подъемник
WO1999010480A3
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1999-05-27
Neue gewebsspezifische calpaine, ihre herstellung und verwendung
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1999-07-21
Method of operation an oil and gas production well activated by a pumping system
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2004-02-12
Metodo de refinado para petroleo pesado.
MXPA03009214A
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2004-01-29
METODO E INSTALACIoN PARA LA FABRICACIoN DE FELPUDOS Y USO ASOCIADO.
GB2350385B
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2001-10-03
Method for drilling and completing oil wells with small intermediate diameters
WO2003106058A3
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2004-04-29
EXTRACTION METHODS AND APPARATUS
UA32209A
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2000-12-15
Способ селективной изоляции прилива пластовых вод в скважинах
UA32119A
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2000-12-15
Газлифтный подъемник для периодического газлифта