http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2912833-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f8877d26e7e712d48efb03a75bd073f3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-1291 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-1208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-16 |
| filingDate | 2014-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f5783b115044a324a94910ac688b438a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5e69d1e173dcac9eaa2fb4251f86db4 |
| publicationDate | 2014-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2912833-A1 |
| titleOfInvention | A plug for well drilling process provided with mandrel formed from degradable material |
| abstract | A plug for well drilling process comprising: (a) a mandrel formed from a degradable material; (b) a pair of rings placed on an outer peripheral surface existing in the orthogonal to an axial direction of the mandrel, at least one of the rings being formed from a degradable material; and (c) at least one diameter-expandable circular rubber member placed at a position between the pair of rings on the outer peripheral surface existing in the orthogonal to the axial direction of the mandrel; the percentage of mass loss in the degradable material after immersion for 72 hours in water at a temperature of 150°C preferably being from 5 to 100%; and a well drilling method comprising the step of plugging well hole using the plug for well drilling process , wherein part or all of the plug for well drilling process degrades after the plugging. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105298429-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105298429-A |
| priorityDate | 2013-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.