|
2014
|
G/S
|
Oil and gas well machinery and parts and fittings to enhance hydraulic performance and extend pum... |
|
|
Invention
|
System and method for induction heating a helical rotor using a coil. Embodiments of the inventio... |
|
2013
|
G/S
|
Reverse progressing cavity pump attached below a regular production pump and used for the extract... |
|
|
G/S
|
Oil and gas well machinery that combines a Progressing Cavity Pump (PCP) with a submersible elect... |
|
2010
|
G/S
|
A unit designed to optimize and automate Progressing Cavity Pump applications in the oil and gas ... |
|
2009
|
G/S
|
A device mounted to the top of the stator portion of a progressing cavity pump used in oilfield a... |
|
2008
|
Invention
|
Progressing cavity pump assembly and method of operation. A progressing cavity pump assembly incl... |
|
2005
|
Invention
|
Rotary drivehead for downhole apparatus. A drivehead for driving a drive string of a rotary pump ... |
|
2002
|
Invention
|
Articulated seal. An articulated seal for use with polished rod and rotary drive head assemblies ... |
|
|
Invention
|
Braking assembly. The invention relates to a braking assembly for permitting axial rotation of a ... |
|
2001
|
Invention
|
Insertable progressing cavity pump. An insertable progressing cavity pump is taught. The pump is ... |
|
2000
|
Invention
|
Ceramic hardfacing for progressing cavity pump rotors. A hardfacing for downhole progressing cavi... |
|
1999
|
Invention
|
Gimbal and seal for the drivehead of a downhole rotary pump. The invention relates to downhole ro... |
|
|
Invention
|
Downhole anchor. A downhole anchor for preventing rotational movement of a member within a well h... |
|
1998
|
G/S
|
Oil well pumping equipment. Sale of oil well pumping equipment. |
|
|
G/S
|
Rotary seal for progressing cavity oil well pump drivehead. |
|
|
Invention
|
Downhole fluid disposal tool and method. A downhole tool is described can be used for handling wa... |
|
|
Invention
|
Safety coupling for rotary pump. A safety coupling for preventing backspin at excessive speeds of... |
|
|
G/S
|
oil well pumps and replacement parts thereof |
|
1996
|
Invention
|
Downhole swivel. A method and apparatus is disclosed which reduces or removes axial loads on the ... |
|
|
Invention
|
Method of applying a filled in metal carbide hard facing to the rotor of a progressing cavity pum... |
