US PATENT SUBCLASS 166 / 244.1
PROCESSES

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


166 /   HD   WELLS

244.1PROCESSES {39}
245  DF  .~> Specific pattern of plural wells
246  DF  .~> Using microorganisms
247  DF  .~> Nuclear energy or radioactivity for treating
248  DF  .~> Electric current or electrical wave energy through earth for treating
249  DF  .~> Vibrating the earth or material in or being placed in the earth pores
250.01  DF  .~> With indicating, testing, measuring or locating {21}
256  DF  .~> In situ combustion {6}
264  DF  .~> Sampling well fluid
265  DF  .~> Separating material entering well {2}
268  DF  .~> Distinct, separate injection and producing wells {7}
263  DF  .~> Cyclic injection then production of a single well
276  DF  .~> Providing porous mass of adhered filter material in well
277  DF  .~> Repairing object in well
278  DF  .~> Graveling or filter forming
279  DF  .~> Material placed in pores of formation to treat resident fluid flowing into well
280  DF  .~> Specific propping feature for a fracture
281  DF  .~> Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking formation
282  DF  .~> Specific low fluid loss feature for fluid attacking formation
283  DF  .~> Specific low fluid loss feature for fracturing fluid or cement causes fracture
284  DF  .~> Fluid flow causes pellet to block opening in wall of conduit
285  DF  .~> Cementing, plugging or consolidating {7}
296  DF  .~> Preventing flow into strainer while lowering by blocking openings
297  DF  .~> Perforating, weakening, bending or separating pipe at an unprepared point {1}
299  DF  .~> With explosion or breaking container to implode
300  DF  .~> Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant)
301  DF  .~> Freeing stuck object, grappling or fishing in well
302  DF  .~> Heating, cooling or insulating {1}
304  DF  .~> Dissolving or preventing formation of solid oil deposit
305.1  DF  .~> Placing fluid into the formation {3}
309  DF  .~> Producing foam or gas in well by foaming or gas producing material
310  DF  .~> Entraining or incorporating treating material in flowing earth fluid
311  DF  .~> Cleaning or unloading well {1}
313  DF  .~> Parallel string or multiple completion well
369  DF  .~> Producing the well {3}
373  DF  .~> Operating valve, closure, or changeable restrictor in a well {1}
376  DF  .~> Destroying or dissolving well part
377  DF  .~> Disassembling well part
378  DF  .~> Assembling well part {2}
381  DF  .~> Placing or shifting well part {6}

DEFINITION

Classification: 166/244.1

Processes:

(under the class definition) A process.

SEE OR SEARCH CLASS

137, Fluid Handling,

1, for processes of handling material in a pipe line including forming or maintaining a film on the interior of the pipe.

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. Examples of broadly recited steps which are not considered significantly manipulative are (a) generally producing the well or (b) broad removal of spent material. Examples of processes classifiable in Class 166 rather than Class 507 are: using pressure; introducing one material after another; introducing materials through separate conduits; 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; 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 material is inserted into the pores of the earth.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, appropriate subclasses for subject matter relating to: colloid systems (such as sols*, emulsions, dispersions, foams, aerosols, smokes, gels, or pastes) or wetting agents (such as leveling, penetrating, or spreading); subcombination compositions of colloid systems containing at least an agent specialized and designed for or peculiar to use in making or stabilizing colloid systems; compositions and subcombination compositions specialized and designed for or peculiar to use in breaking (resolving) or inhibiting colloid systems; processes of making the compositions or systems of the class; processes of breaking (resolving) or inhibiting colloid systems; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.