.~.~ Including non-expulsive material placed in well
DEFINITION
Classification: 166/371
Including nonexplosive material placed in well:
(under subclass 369) Process including a step of introducing into the well a material which acts in a manner other than to physically force the well fluid toward the surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246, for a process of producing a well involving the use of microorganisms.
279, for a process of producing a well comprising contacting the fluid to be produced by a treating material in the pores of a formation.
310, for a process of producing a well comprising entraining or incorporating a treating material in the flowing earth fluid in a well.
SEE OR SEARCH CLASS
507, Earth Boring, Well Treating, and Oil Field Chemistry,
200+, for processes involving no significant manipulative steps or relationship with the well and consisting only of placing a treating material in a well. Example of broadly recited steps which are not considered significantly manipulative are: using pressure, introducing one material after another, introducing materials through separate conduits, producing the well, removing spent material, introducing material at the bottom of the well, or below paraffin deposits, contacting well fluids with an introduced material during pumping producing or blowing the well. Examples of processes classifiable in Class 166 rather than Class 507 are; a process in which materials are introduced into a well to react with each other (including a process in which one material reacts with the product of the reaction between another material and a material found in the well), a process in which a material is introduced in a special location, as between the casing and tubing, or a process in which a material is inserted into the pores of the earth.
