| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ab07e6fd3ec0599bfaeaf1f9b2f5742 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5045 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-504 |
| filingDate |
1989-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1827c4d111faed0723c0560c81a1cf66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56f4f0a08caaf05b3bda704315f8570c |
| publicationDate |
1990-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4901797-A |
| titleOfInvention |
Method for plugging subterranean formations with siliceous gels |
| abstract |
A high pH solution containing a silica material and an inorganic fluoride salt which hydrolyzes to form hydrofluoric acid are introduced into a subterranean zone where the pH is reduced by the acid whereby the silica material forms a gel and plugs the subterranean zone. The pH at which gelling occurs can be increased by adding a soluble inorganic salt to the solution. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008035343-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6011075-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10995251-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019352556-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5203834-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11560507-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11124689-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5268112-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10975283-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10941327-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10941326-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019352555-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7458424-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11753574-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10954427-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10745610-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5145012-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10584274-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11572761-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11149181-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11708521-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11053428-B2 |
| priorityDate |
1989-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |