Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Pressure drop regulator for downhole turbine










Image Number 2 for United States Patent #4553611.

In a borehole forming operation, the flow of gas through a downhole pneumatic motor is regulated to eliminate horsepower variations due to variations in bottom hole pressure. The pneumatic motor is connected to the lower end of a tubing string and an orifice is placed within the entrance and exit gas passageways leading to and from the pneumatic motor. The uphole source (i.e., compressors) of gas pressure and gas flow rate is maintained as a constant value which assures that sonic flow conditions exist at the lower orifice. The employment of gauged orifices placed within the inlet and exit passageways of the gas motor assures that sonic flow conditions exist at the lower orifice and as the bottom hole pressure varies, there is no resultant change in the motor output horsepower since constant flow rate and pressure drop ratio through the motor is maintained. This is the case so long as the bottom hole pressure does not increase to the critical ratio.








 
 
  Recently Added Patents
Image generation device with optimized dose control
Provision of downlink packet access services to user equipment in spread spectrum communication network
Programming method of non-volatile memory device
Controller interface providing improved data reliability
(4935
Notebook computer
Case for electronic device
  Randomly Featured Patents
Apparatus and method for determining the source of a telephone communication
Process for upgrading an oligomerization product
Formation of boride barrier layers using chemisorption techniques
Pipe joint assembly
Fire activated, fail safe, gate valve bonnet
Guaranteed RFID event delivery
Method and apparatus for occlusion analysis
Composition for cleaning contact lenses
Breath spray with tooth decay and halitosis prevention characteristics
Extracellular form of the human fibroblast growth factor receptor