| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8cac4ca8509c3ca45aca9a0274628c6e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-906 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-032 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K3-00 |
| filingDate |
2009-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d5bac069b24734564cb0781e174b73f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c75f5936bba6b9ae0ba83b6acdd3778
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29881c5ea4b11175b3cb1b108be9fab4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8457d296d3031ceaaad877a56b36e972
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb4e20342681873093ceb20925df7907 |
| publicationDate |
2009-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2009124521-A1 |
| titleOfInvention |
Additive for increasing the density of a fluid for casing annulus pressure control |
| abstract |
A method of treating a wellbore that includes circulating a wellbore fluid in the wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a wellbore additive colloidal solid material, and wherein the wellbore additive colloidal solid material is formed by grinding a solid particulate material and a polymeric dispersing agent for a sufficient time so that the polymeric dispersing agent is absorbed to the surface of the resulting colloidal solid particles and less than 10% of the resulting colloidal solid particles have a diameter greater than 10 microns, but not more than five percent of the particles are less than 0.2 micron in diameter, wherein the grinding is carried out in the presence of an oleaginous base fluid and wherein the grinding is carried out so that the wellbore additive colloidal solid material has a weight average particle diameter d 50 less than 2.0 microns. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008169130-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9663701-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012101456-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8563483-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010326728-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014041870-A1 |
| priorityDate |
1996-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |