http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009139723-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c4207cf432b8ff6700fce14cad481f87 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78198588af838c1183970476bcf71a3b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B37-08 |
| filingDate | 2007-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1990cf8d28d8e862873aa395759e863d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fc4ed1f28ff5b88d6223935ba2987de2 |
| publicationDate | 2009-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2009139723-A1 |
| titleOfInvention | Filtercake Removal |
| abstract | A treatment fluid and a method are disclosed for cleaning borehole filtercake using the treatment fluid, wherein the filtercake contains reservoir drilling fluid (RDF) solids. The method includes pumping the treatment fluid downhole in contact with the filtercake to be removed to establish a differential pressure between the treatment fluid and the formation adjacent the filtercake, and evenly propagating treatment of the filtercake during the differential pressure period to delay breakthrough by the treatment fluid for a period from 1 to 12 hours. The treatment fluid comprises a fluoride source providing a 1.2 to 5 molar fluoride concentration, and another acid or combination of acids to provide a pH between 1.8 and 5. The treatment fluid is balanced for a dissolving power high enough to have significant dissolution of the filtercake, but low enough for even propagation to avoid premature leak-off. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3708633-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8162056-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010319919-A1 |
| priorityDate | 2007-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 145.