ClassID:

104276

C09K8/32 - page 2 - CPC Classification

Classification description:

Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations; Well-drilling compositions Non-aqueous well-drilling compositions, e.g. oil-based

Recent Application in this class:
#301
20060079431
2006-04-13

2-Hydroxy-3-alkoxypropyl sulfides, sulfones, and sulfoxides: new surface active agents

#302
20060073981
2006-04-06

Methods of preparing non-aqueous fluids suitable for use in wellbore servicing fluids

#303
20060009364
2006-01-12

Viscous oleaginous fluids and methods of drilling and servicing wells therewith

#304
20050284666
2005-12-29

Geosynthetic composite for borehole strengthening

#305
20050284641
2005-12-29

Controlled variable density fluid for wellbore operations

#306
20050269085
2005-12-08

Method for sealing lost circulation zones

#307
20050269080
2005-12-08

Method and apparatus for performing chemical treatments of exposed geological formations

#308
20050239664
2005-10-27

Spotting fluid for use with oil-based muds and method of use

#309
20050239662
2005-10-27

Drilling fluids

#310
20050233911
2005-10-20

Gelled oil with surfactant

#311
20050170973
2005-08-04

Method and composition for inhibiting lost circulation during well operation

#312
20050164891
2005-07-28

Methods of reducing sag in non-aqueous fluids

#313
20050137093
2005-06-23

Metallic soaps of modified tall oil acids

#314
20050124502
2005-06-09

Compositions for restoring lost circulation

#315
20050113261
2005-05-26

Process for the preparation of a homogeneous, low-viscosity and long-term-stable polymer dispersion in mineral oils

#316
20050072599
2005-04-07

Zeolite-containing remedial compositions

#317
20050067350
2005-03-31

Solid-liquid separation of oil-based muds

#318
20050067194
2005-03-31

Solid-liquid separation of oil-based muds

#319
20050056464
2005-03-17

Drilling fluid apparatus and method

#320
20050037929
2005-02-17

Additive for oil-based drilling fluids

#321
20050036604
2005-02-17

Direct digital access arrangement circuitry and method for connecting DSL circuitry to phone lines

#322
20050034867
2005-02-17

Subterranean fluids and methods of cementing in subterranean formations

#323
20050032652
2005-02-10

Method of formulating and using a drilling mud with fragile gels

#324
15928979
2019-03-26

Trimodal hybrid loss prevention material (LPM) for preventative and curative loss control

#325
15788461
2018-12-04

Loss circulation compositions (LCM) having portland cement clinker

#326
15466032
2017-08-29

Additive composition suitable for viscosity reduction of oil-based drilling fluid, oil-based drilling fluid and use thereof

#327
15189624
2016-12-20

Process of manufacturing thickeners and use of thus produced thickeners in high-viscosity non aqueous formulations

#328
15189584
2017-01-17

Process of manufacturing thickeners and use of thus produced thickeners in high-viscosity unsaturated polyester containing formulations