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
Parallel active optical cable
Rain barrel
Multi-bank queuing architecture for higher bandwidth on-chip memory buffer
Data distribution unit for vehicle entertainment system
Semiconductor unit having a power semiconductor and semiconductor apparatus using the same
Display screen or portion thereof with icon
Electrode structure and its manufacturing method, and semiconductor module
  Randomly Featured Patents
Method and apparatus for the measurement of glucose content
CMOS full adder circuit
Chemically active slurry for the polishing of noble metals and method for same
Mounting arrangement for electrostatic precipitator
Method of winding composite panels
Image forming apparatus with an operator part replacement mode
Wheel cover for preventing tire marks
Contact structure, method of forming the same, semiconductor device, and method of manufacturing the same
Aluminum complex hydroxide salt and method of producing the same
Demodulator, diversity receiver, and demodulation method