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
Automatic misalignment balancing scheme for multi-patterning technology
Utility knife
Analysis of methylation using nucleic acid arrays
Node and wireless sensor network comprising the node
Nucleic acid sequences encoding strictosidine synthase proteins
Method and composition for hyperthermally treating cells
Stacked type semiconductor memory device and chip selection circuit
  Randomly Featured Patents
Intelligent powered mobility for infants and special needs children
Method for extracting from a text corpus answers to questions stated in natural language by using linguistic analysis and hypothesis generation
Portable storage unit
Developer supplying cartridge, developer receiving cartridge, process cartridge, and image forming apparatus
Variable speed switch
Biobriefcase aerosol collector heater
Board game with trap doors
Composing, browsing, replying, forwarding e-mail
Combined power valve and flow divider
Business intelligence system and method utilizing multidimensional analysis of a plurality of transformed and scaled data streams