http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8534369-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_45e9eb6d8a2962346ed200657f1da548 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B2200-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B21-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B21-10 |
| filingDate | 2011-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b4689e66087d9210c2eaf0a2268784f |
| publicationDate | 2013-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-8534369-B2 |
| titleOfInvention | Drill string flow control valve and methods of use |
| abstract | A drill string flow control valve may comprise a valve housing, a valve sleeve axially movable within a valve housing from a closed position to an open position, a biasing mechanism biasing the valve sleeve into a closed position, and a plurality of pressure ports for allowing a differential pressure to be exerted on the valve sleeve. The valve may include a piston axially movable within the valve housing and bearing against the valve sleeve which piston may be used to initiate movement of the valve sleeve. The piston includes a flow passage therethrough in fluid communication with the interior of the valve sleeve and a ball valve disposed to control fluid flow through the piston. The valve may include a flow restriction in the flow path within the valve sleeve and disposed between pressure ports formed in the wall of the valve sleeve. Methods of use are also provided. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11028669-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9458697-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8695710-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8991509-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9428976-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8893811-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8899334-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9784070-B2 |
| priorityDate | 2010-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.