(under subclass 244.1) Process which includes a significant manipulative step of recovering fluid from the earth.
(1) Note. The mere placing of a control device or removing an obstruction is not enough for classification in this subclass. Also the mere broad recitation in a claim that a well is flowed or produced is not enough. Some detail of the flowing steps must be set forth. Processes with a mere broad recitation that a well is flowed or produced are classified on some other basis. Subject matter found in any subclass of this class may have a disclosure of producing the well. Cross-references should be made with restraint, therefore. The subclasses noted below are considered especially pertinent to producing processes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247, for a process of producing a well involving the use of nuclear energy or radioactivity.
249, for a process of producing a well involving vibrating the earth or material in the earth.
263, for cyclic operation of plural wells.
264, for a process of producing a well merely to take a sample of fluid. 265+, for a process of producing a well comprising separating material leaving a well.
302+, for a process of producing a well involving heating or cooling.
305+, and especially subclass 306, for a process of producing a well involving placing a fluid into or fracturing a formation.
311+, for a process of cleaning or unloading the well.
313+, for a process of producing a parallel, nonconcentric string or multiple completion well.
SEE OR SEARCH CLASS
137, Fluid Handling,
1+, for processes of controlling fluid flow of general application. Sole disclosure or claiming of use in a well causes classification in Class 166.
417, Pumps, appropriate subclasses for methods of and apparatus for recovering earth fluids involving only pumping.
