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
Apparatus and method for controlling a tunable matching network in a wireless network
Cycloalkylamine substituted isoquinoline derivatives
Polyamide compositions
Systems and methods for selective text to speech synthesis
Thin film switch and press key/keyboard using the same
Method and system for advertisement using internet browser to insert advertisements
System, method, and software for researching, analyzing and comparing expert witnesses
  Randomly Featured Patents
Aqueous solutions or dispersions of polyisocyanate polyaddition products, a process for their production and their use as, or in the production of, adhesives
Recording medium, recording apparatus and recording method
Chimeric adenoviral vectors
Methods and devices for detecting changes in background of images using multiple binary images thereof and hough transformation
Flash comparator
Adjustable 3D capacitor
Inbred corn line LH200
Method for producing alkali carbonate
Multi-user detection using equalization and successive interference cancellation
Console assembly for a vehicle