US Patent Class 507
EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY




Electronic
File
Wrappers


Electronic
Patent
Documents


Paper
Patent
Documents

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

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services


  DF  CLASS NOTES
90  DF  PREVENTING CONTAMINANT DEPOSITS IN PETROLEUM OIL CONDUITS
100  DF  EARTH BORING
101  DF  .~ Contains enzyme or living microorganism
102  DF  .~ Contains intended gaseous phase at entry into wellbore
103  DF  .~ Contains organic component
104  DF  .~.~ Organic component is cellular or fibrous material derived from plant or animal source (e.g., wood, nutshell, paper, leather, cotton, etc.)
105  DF  .~.~ Organic component contains fluorine bonded directly to carbon
106  DF  .~.~ Organic component is lignin or humate or derivative thereof (e.g., tannin, quebracho extract, etc.)
107  DF  .~.~.~ Humate component is fossilized (e.g., lignite, leonardite, brown coal, etc.)
108  DF  .~.~.~ Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.)
109  DF  .~.~.~.~ Includes metal compound other than an alkali or alkaline earth metal compound (e.g., Al, Cr, Fe, Mn, Cu, etc.)
110  DF  .~.~ Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, xanthan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons
111  DF  .~.~.~ Carbohydrate is starch or derivative thereof
112  DF  .~.~.~ Carbohydrate is cellulose or derivative thereof
113  DF  .~.~.~.~ Carboxyalkylcellulose (e.g., CMC, CMHEC, etc.)
114  DF  .~.~.~.~ Hydroxyalkylcellulose (e.g., HEC, etc.)
115  DF  .~.~.~ Carbohydrate is hydroxyalkyl ether derivative (e.g., HPG, etc.)
116  DF  .~.~.~ Ester is higher fatty or carboxylic acid ester (e.g., sorbitan oleate, etc.)
117  DF  .~.~ Organic component is solid synthetic resin
118  DF  .~.~.~ Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.)
119  DF  .~.~.~.~ Polymer derived from acrylic acid monomer or derivative
120  DF  .~.~.~.~.~ Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.)
121  DF  .~.~.~.~.~.~ Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)
122  DF  .~.~.~.~ Sulfur is attached directly or indirectly to the ethylenic monomer by nonionic bonding
123  DF  .~.~.~.~ Hetero nitrogen ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding
124  DF  .~.~.~.~ Polymer contains vinyl alcohol unit
125  DF  .~.~.~.~ Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.)
126  DF  .~.~ Organic component is asphalt or a component or derivative thereof
127  DF  .~.~ Organic component contains silicon attached directly or indirectly to carbon by nonionic bonding
128  DF  .~.~ Organic component contains phosphorous attached directly or indirectly to carbon by nonionic bonding
129  DF  .~.~ Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding
130  DF  .~.~.~ Nitrogen is part of a hetero ring
131  DF  .~.~.~ Oxygen is attached directly or indirectly to carbon by nonionic bonding
132  DF  .~.~.~.~ Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.)
133  DF  .~.~.~.~ Organic component contains an ether linkage
134  DF  .~.~ Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding
135  DF  .~.~.~ Organic component contains a sulfur attached directly to carbon by nonionic bonding (e.g., sulfonate, etc.)
136  DF  .~.~ Organic component contains ether linkage (e.g., PEG ether, etc.)
137  DF  .~.~ Organic component contains a carbocyclic group (e.g., cyclic alkyl, aromatic, tall oil, etc.)
138  DF  .~.~ Organic component is a fat, fatty alcohol, fatty oil, ester-type wax, fatty still residue, or higher fatty acid or salt thereof
139  DF  .~.~ Organic component contains an alcohol group
140  DF  .~ Contains inorganic component other than water or clay
141  DF  .~.~ Inorganic component contains soluble potassium salt
142  DF  .~.~ Inorganic component contains phosphorous
143  DF  .~.~ Inorganic component is elemental metal or alloy
144  DF  .~.~ Inorganic component is asbestos
145  DF  .~.~ Inorganic component is soluble in boring medium
200  DF  WELL TREATING
201  DF  .~ Contains enzyme or living micro-organism
202  DF  .~ Contains intended gaseous phase at entry into wellbore
203  DF  .~ Contains organic component
204  DF  .~.~ Organic component is cellular or fibrous material derived from plant or animal source (e.g., wood, nutshell, paper, leather, cotton, etc.)
205  DF  .~.~ Organic component contains fluorine bonded directly to carbon
206  DF  .~.~ Organic component is lignin or humate or derivative thereof (e.g., tannin, quebracho extract, etc.)
207  DF  .~.~.~ Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.)
208  DF  .~.~.~.~ Includes metal compound other than an alkali or alkaline earth metal compound (e.g., Al, Cr, Fe, Mn, Cu, etc.)
209  DF  .~.~ Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons
210  DF  .~.~.~ Carbohydrate has been grafted onto solid synthetic resin
211  DF  .~.~.~ Carbohydrate is polysaccharide
212  DF  .~.~.~.~ Polysaccharide is starch or derivative thereof
213  DF  .~.~.~.~ Polysaccharide is a xanthan (e.g., scleroglucans, etc.)
214  DF  .~.~.~.~ Polysaccharide is cellulose or derivative thereof
215  DF  .~.~.~.~.~ Carboxyalkylcellulose (e.g., CMC, CMHEC, etc.)
216  DF  .~.~.~.~.~ Hydroxyalkylcellulose (e.g., HEC, etc.)
217  DF  .~.~.~.~ Polysaccharide is hydroxyalkyl ether derivative (e.g., HPG, etc.)
218  DF  .~.~.~ Ester is higher fatty or carboxylic acid ester (e.g., sorbitan oleate, etc.)
219  DF  .~.~ Organic component is solid synthetic resin
220  DF  .~.~.~ Resin is polymer derived from phenolic and aldehydic monomers
221  DF  .~.~.~ Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.)
222  DF  .~.~.~.~ Polymer derived from monomer having quaternary ammonium group
223  DF  .~.~.~.~.~ Nitrogen of the quaternary ammonium group is a member of a hetero ring
224  DF  .~.~.~.~ Polymer derived from acrylic acid monomer or derivative
225  DF  .~.~.~.~.~ Nitrogen is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamide, acrylonitrile, etc.)
226  DF  .~.~.~.~.~.~ Sulfur is attached directly or indirectly to the acrylic acid monomer or derivative by nonionic bonding (e.g., acrylamidoalkane sulfonates, etc.)
227  DF  .~.~.~.~ Sulfur is attached directly or indirectly to the ethylenic monomer by nonionic bonding
228  DF  .~.~.~.~.~ Monomer contains benzene ring and sulfonate group
229  DF  .~.~.~.~ Hetero nitrogen ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding
230  DF  .~.~.~.~ Polymer contains vinyl alcohol unit
231  DF  .~.~.~.~ Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.)
232  DF  .~.~ Organic component is asphalt or a component or derivative thereof
233  DF  .~.~ Organic component contains silicon attached directly or indirectly to carbon by nonionic bonding
234  DF  .~.~.~ Organic component contains a direct carbon to silicon bond
235  DF  .~.~ Organic component contains phosphorus attached directly or indirectly to carbon by nonionic bonding
236  DF  .~.~.~ Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding
237  DF  .~.~.~ Organic component contains a direct carbon to phosphorous nonionic bond (e.g., phosphonate, etc.)
238  DF  .~.~.~ Organic component is a phosphate ester
239  DF  .~.~ Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding
240  DF  .~.~.~ Organic component is quaternary ammonium salt
241  DF  .~.~.~ Organic component contains plural carboxylic acid, ester, or salt groups attached directly or indirectly to nitrogen by nonionic bonding
242  DF  .~.~.~ Nitrogen is part of a hetero ring
243  DF  .~.~.~.~ Plural heteroatoms in the ring
244  DF  .~.~.~ Oxygen is attached directly or indirectly to carbon by nonionic bonding
245  DF  .~.~.~.~ Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.)
246  DF  .~.~.~.~ Organic component contains an ether linkage
247  DF  .~.~.~ Sulfur is attached directly or indirectly to carbon by nonionic bonding
248  DF  .~.~.~ Organic component consists only of carbon, hydrogen, and nitrogen
249  DF  .~.~.~.~ Organic component contains carbon double or triple bonded to nitrogen (e.g., cyano, nitrilo, etc.)
250  DF  .~.~.~.~ Organic component is acyclic
251  DF  .~.~.~.~.~ Organic component contains plural nitrogen atoms attached directly or indirectly to carbon by nonionic bonding
252  DF  .~.~ Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding
253  DF  .~.~.~ Organic component contains ether linkage (i.e., C-O-C)
254  DF  .~.~.~.~ The sulfur is part of a sulfate group
255  DF  .~.~.~.~ The sulfur is part of a sulfonate group
256  DF  .~.~.~ Organic component contains a sulfur attached directly to carbon by nonionic bonding
257  DF  .~.~.~.~ Plural alkyls attached directly to the same sulfur atom or to a chain of sulfur atoms by nonionic bonding
258  DF  .~.~.~.~ Alkyl and hydrogen attached directly to the same sulfur atom or to a chain of sulfur atoms by nonionic bonding
259  DF  .~.~.~.~ The sulfur is part of a sulfonate group
260  DF  .~.~ Organic component is polycarboxylic acid, ester, or salt thereof
261  DF  .~.~ Organic component contains ether linkage (e.g., PEG ether, etc.)
262  DF  .~.~.~ Organic component contains a carbocyclic group
263  DF  .~.~ Organic component contains a carbocyclic group (e.g., cycloaliphatic, aromatic ring, tall oil, etc.)
264  DF  .~.~.~ Organic component is a phenol
265  DF  .~.~ Organic component is a fat, fatty alcohol, fatty oil, ester-type wax, fatty still residue, or higher fatty acid or salt thereof
266  DF  .~.~ Organic component contains an alcohol group
267  DF  .~.~ Organic component contains carboxylic acid, ester, or salt thereof
268  DF  .~.~ Organic component contains a carbonyl group (e.g., aldehyde, ketone, etc.)
269  DF  .~ Contains inorganic component other than water or clay
270  DF  .~.~ Inorganic component is elemental metal or alloy
271  DF  .~.~ Inorganic component contains Ti, Zr, V, Cr, Mn, Fe, or Ni
272  DF  .~.~ Inorganic component contains copper or zinc
273  DF  .~.~ Inorganic component contains boron
274  DF  .~.~ Inorganic component contains phosphorous
275  DF  .~.~ Inorganic component contains arsenic or antimony
276  DF  .~.~ Inorganic component contains potassium
277  DF  .~.~ Inorganic component is soluble in the well treating medium
***************************************
CROSS-REFERENCE ART COLLECTIONS RELATING TO SUBCLASSES 90 THROUGH 277
***************************************
901  DF  ORGANICALLY MODIFIED INORGANIC SOLID
902  DF  CONTROLLED RELEASE AGENT
903  DF  CROSSLINKED RESIN OR POLYMER
904  DF  PROCESS OF MAKING FLUIDS OR ADDITIVES THEREFOR
905  DF  NONTOXIC COMPOSITION
906  DF  SOLID INORGANIC ADDITIVE IN DEFINED PHYSICAL FORM
907  DF  INDICATING MEANS (E.G., DYE, FLUORESCING AGENT, ETC.)
******************************
CROSS-REFERENCE ART COLLECTIONS RELATING TO SUBCLASSES 100 THROUGH 145.
******************************
910  DF  EARTH BORING FLUID DEVOID OF DISCRETE AQUEOUS PHASE
******************************
CROSS-REFERENCE ART COLLECTIONS RELATED TO SUBCLASSES 200 THROUGH 277
******************************
920  DF  BIOCIDAL
921  DF  SPECIFIED BREAKER COMPONENT FOR EMULSION OR GEL
922  DF  FRACTURE FLUID
923  DF  .~ Fracture acidizing
924  DF  .~ With specified propping feature
925  DF  COMPLETION OR WORKOVER FLUID
926  DF  PACKER FLUID
927  DF  WELL CLEANING FLUID
928  DF  .~ Spacing slug or preflush fluid
929  DF  .~ Cleaning organic contaminant
930  DF  .~.~ Organic contaminant is asphaltic
931  DF  .~.~ Organic contaminant is paraffinic
932  DF  .~ Cleaning sulfur deposits
933  DF  ACIDIZING OR FORMATION DESTROYING
934  DF  .~ With inhibitor
935  DF  ENHANCED OIL RECOVERY
936  DF  .~ Flooding the formation
937  DF  .~.~ With emulsion
938  DF  .~.~.~ With microemulsion
939  DF  CORROSION INHIBITOR
940  DF  FREEING STUCK OBJECT FROM WELLBORE