| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_51b0c7d1f4c665b91cf639098748dc01 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B2200-04 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B34-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-122 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B34-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-122
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B34-10 |
| filingDate |
1974-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25bd376a013d41a8859b12f105305eb2 |
| publicationDate |
1975-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3897822-A |
| titleOfInvention |
Well valve apparatus |
| abstract |
A remote controlled full opening ball-type valve for mounting at a subsurface location in a well with a well packer in a well annulus between the production tubing and well casing for providing a flow path through an opening of the packer and the well annulus for the well produced gases separate from the flow path through the production tubing for the well produced liquids. The valve is preferably arranged to fail-safe and shut-in gas flow through the annulus when control fluid pressure communicated to the valve from the surface is reduced for any reason. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006204337-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8201804-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7258508-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5947206-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008164033-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4031955-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7500525-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009242817-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4589482-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4345647-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4596516-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11722228-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4624310-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016177666-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9988875-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9927227-A1 |
| priorityDate |
1974-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |