E21B43/2635 - CPC Classification Index

ClassID:

135650 ⎘

E21B43/2635 - CPC Classification

Classification description:

Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells; Methods for stimulating production by forming crevices or fractures using explosives by means of nuclear energy

Recent Application in this class:

20090173491

2009-07-09

METHOD AND SYSTEM FOR EXTRACTION OF HYDROCARBONS FROM OIL SHALE AND LIMESTONE FORMATIONS

20090044943

2009-02-19

Method and system for extraction of hydrocarbons from oil shale

20070181301

2007-08-09

Method and system for extraction of hydrocarbons from oil shale