Resources Contact Us Home
Continuous circulation drilling method

Image Number 3 for United States Patent #7322418.

A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for the mud etc. and which incorporates rams to seal off and separate the flow of mud as a tubular is added or removed.

  Recently Added Patents
Alternate source programming
Multi-protocol data transfers
Support for a parameterized query/view in complex event processing
Method and composition for hyperthermally treating cells
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
Piano keyboard with key touch point detection
Motor with power-generation coil module
  Randomly Featured Patents
Retrofit telephone network interface apparatus
Flame retardant mercaptocarboxylic acid esters of halogenated aromatic polyols
Process for the plasma etching of materials not containing silicon
Hydrocarbon conversion method and apparatus
Combination wet-dry cooling tower
Transportable storage facility
Method and apparatus for automatically transferring and accumulating groups of flaccid articles
Remotely controlled film advance system for goggles
Apparatus for manufacturing lens-fitted photo film unit
Preparation of solid substrate containing receptor and labeled form of ligand for assays