Matches 1 - 22 out of 22


Match Document Document Title
8721297 Multistage pulsating airlift pump  
The multistage pulsating airlift pump includes a lowermost air injector stage and at least air injector stage above the lowermost stage installed in a lift pipe. Each stage includes a...
8418768 Bypass gaslift system, apparatus, and method for producing a multiple zones well  
The present invention relates to a system, apparatus, and method provided to selectively produce petroleum fluid from multiple production zones well. The apparatus comprises a casing running...
7500525 Gas well de-watering apparatus and method  
A system and method for systematically and economically recovering formation liquids from the bottom of a petroleum well are disclosed. In a preferred embodiment, the system and method are passive...
7278489 Gas turbine for oil lifting  
Gas turbine driven oil lifting device for increasing the quantity of oil obtained over a specified time (e.g. barrels per day) and the percentage of total amount obtained from oil-bearing...
4715441 Side pocket mandrel  
In accordance with an illustrative embodiment of the present invention, a side pocket mandrel includes a tubular main body having an internal bore, a seating section w4elded to one end of said...
4545731 Method and apparatus for producing a well  
A system and method for producing earth formation fluids such as crude oil using a lighter oil to force the crude oil to the surface and thereafter removing the lighter oil by gas lift techniques....
4295795 Method for forming remotely actuated gas lift systems and balanced valve systems made thereby  
One or more balanced gas lift valves mounted on an oil production tube deep in a well are responsive to a remote valve control transmitter at the surface for controlling the ejection of a fluid,...
4251191 Method for lifting oil in a well  
A method for lifting oil from the bottom of a well comprises, (1) injecting a fluid of less specific gravity into the well with a fluid flow control valve, and (2) equalizing the fluid pressure on...
3642070 SAFETY VALVE SYSTEM FOR GAS LIGHT WELLS  
A safety valve system for wells including a valve connected in a tubing string for shutting off flow to the surface in the tubing. The valve is biased to an open position by fluid pressure in the...
3601191 GAS-LIFT SYSTEM AND METHOD  
A gas-lift system is provided with a multiple valve arrangement, wherein a plurality of gas-lift valves which are each actuated by a pressure-responsive member, are installed in the tubing string...
3543848 INTERMITTER  
RE11675 Title is not available  
3476135 GAS LIFT VALVE  
3318258 Gas lift system  
3059700 Gas lift mandrel for use in wells  
3053323 Retrievable gas lift apparatus  
3048118 Pump  
3022829 Well assembly for reducing liquid level in well tubing  
2876434 Indicating and control system  
2869475 Control system  
2851959 Motor driven gas lift valve  
2803197 Motor control circuit  

Matches 1 - 22 out of 22