http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2587997-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_910b2c2c248c55c9f6c36007b447ad2c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-506 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-206 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-514 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-536 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-536 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-38 |
| filingDate | 2005-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e0a8466ee5dc5c063961fd69dc7cb22a |
| publicationDate | 2006-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2587997-A1 |
| titleOfInvention | Drilling fluid additive and method |
| abstract | A method is provided for drilling a wellbore including the steps of: providing a drilling mud comprising a primary amine; circulating the drilling mud while the wellbore is being drilled wherein the primary amine is incorporated into a filter cake deposited on the wellbore wall as the wellbore is being drilled; and removing at least a portion of the filter cake after the wellbore is drilled by circulating fluid into the wellbore a composition comprising nitrous acid. The invention also includes the drilling fluid containing a solid component that generates gas from within the filter cake upon contact with a component that causes the solid component to generate gas. In some embodiments, the solid component is a primary amine grafted to a polymer that is not soluble in the drilling fluid composition such as a starch. |
| priorityDate | 2004-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.