http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7576043-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-09 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K23-00 |
| filingDate | 2007-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2009-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9bc1d8e72b88a70cc43f5e6c2b60d175 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e95928391784353c65c5a7f4bffa42c4 |
| publicationDate | 2009-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7576043-B2 |
| titleOfInvention | Viscoelastic wellbore fluid comprising an anionic surfactant |
| abstract | A wellbore fluid comprising a surfactant, the surfactant having the formula (R 1 —X) n Z, wherein R 1 is an aliphatic group—comprising a C 18 -C 22 principal straight chain bonded at a terminal carbon atom thereof to X, and comprising at least one C 1 -C 2 side chain—X is a charged head group, Z is a counterion, and n is an integer which ensures that the surfactant is charge neutral, and wherein the charged head group X is selected to provide that the surfactant is soluble in oil and at least one part of the charged head group is anionic. |
| priorityDate | 2000-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 121.