http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2397881-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e183b88ffc72e64d1b805a946af58de |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N15-1463 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2015-1497 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2015-1486 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N15-0227 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N33-2823 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N15-1459 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N15-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N33-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N15-14 |
| filingDate | 2002-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c8c402219beabb1ca774ed1775a8b44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15fc9a9205f65419bfd055fa18d00b5a |
| publicationDate | 2004-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2397881-A |
| titleOfInvention | Method of particle characterization based on fluorescence imaging |
| abstract | The invention concerns a method for determining the particle size distribution (PSD) of bridging agents in fluids, particularly aqueous fluids used in hydrocarbon recovery such as drilling fluids, drill-in fluids, completion fluids, and the like. It was discovered that the PSD could be selectively determined for calcium carbonate as a bridging agent because it auto-fluoresces. The method is reproducible and is not bothered by the presence of other particles such as drill solids which interferes with conventional methods, for instance, light-scattering techniques. The light used to fluoresce the bridging agent may be filtered to a particular frequency if there are other components present that fluoresce. Flow cytometry is another technique that could be used to implement the invention. |
| priorityDate | 2001-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.