http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2502694-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8cac4ca8509c3ca45aca9a0274628c6e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-901 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-924 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-805 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-04 |
| filingDate | 2003-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58000624ef1169f779dbf5cbdb8d9ca1 |
| publicationDate | 2004-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2502694-A1 |
| titleOfInvention | Acid-coated sand for gravel pack and filter cake clean-up |
| abstract | A method of the preparation and utilization of polymerized alpha-hydroxycarboxylicacid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid. In a preferred example, polyglycolic-acid-coated sand is used to replace conventional gravel pack sand typically used for gravel packing. Under downhole conditions, the acidic by-product generated from the hydration of polyglycolic-acid-coated sand can break down acid-soluble and/or acid-breakable components embedded in the filter cake. This reaction enhances the filter cake removal and the flow of hydrocarbon from the producing formation. The polyglycolic-acid-coated sand may be produced by polymerizing a glycolic acid with a natural or synthetic proppant like 20-40 mesh commercial sand, at temperatures of about 210 ~F or higher. |
| priorityDate | 2002-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.