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
Extensible framework for client-based active network measurement
Real-time application of filters based on image attributes
Error recovery storage along a memory string
Bird deterrent
Sub-LUN input/output profiling for SSD devices
Method for forming contact hole
Asynchronous distributed de-duplication for replicated content addressable storage clusters
  Randomly Featured Patents
Invitation for transferring objects in a communications network
Armored vehicle
Predfiffuser for a gas turbine engine
Chain motion measuring device
Apparatus for charging a trash sorting device with the contents of trash bags
Solar and electric powered illuminated address display
System for measuring and displaying three-dimensional characteristics of electromagnetic waves
Method for suppressing noise in a digital speech signal
Method and apparatus for data transmission in a well bore containing a conductive fluid
Method for controlling growth of tobacco suckers