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
Method for generating codewords
Method, system and computer program product for managing funds in custodial deposit accounts
Negative electrode material for non-aqueous electrolyte secondary battery, method for manufacturing negative electrode material for non-aqueous electrolyte secondary battery, non-aqueous elect
Method and system for blocking hazardous information
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
Semiconductor device including multi-chip
Sporting goal practice screen
  Randomly Featured Patents
Method and apparatus for the correction of positioning errors of a deflected light ray
Non-volatile semiconductor memory apparatus
Device for automatic actuation of an automobile clutch
Gene cluster of prenyl transferase from Hevea brasiliensis
Height-adjustment mechanism for armrest
Dosimeter for measuring skin dose and more deeply penetrating radiation
Method and apparatus for defining the effect of atrial arrhythmias on cardiac performance and directing therapy using a plurality of intrinsically and extrinsically derived signals
Balloon dryer
Remote control retainer
Rodent exclusion device