http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2049518-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f47e77b85ed86ceb94fca185dc3aacf8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79ef6989cc8e30933d5762b4c17f3115 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-46 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-02 |
| filingDate | 1991-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22f85369975bcc651786749178f4a07b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cca1aa33e7543acdeea954a34f186318 |
| publicationDate | 1992-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2049518-A1 |
| titleOfInvention | Method of reducing fluid loss in cement compositions |
| abstract | ABSTRACT Cementing compositions having improved fluid loss capa-bilities, improved corrosion resistance, improved settling characteristics for use in elevated temperature environments in subterranean formation cementing operations are disclosed. More particularly, such compositions include water, hydraulic cement, a styrene/butadiene latex, the styrene to butadiene being present in a ratio of 10/90 to 90/10 by weight and a surfactant comprising a salt of a C12-15 Pareth 10-40 sulfonate. For use at temperatures above 200°F. a stabilizer and retarder comprising a selected copolymer of AMPS?/acrylic acid also preferably is present (AMPS? is a trademark of The Lubrizol Corporation for 2-acrylamido-2-methylpropanesulfonic acid). Additionally, methods of cementing a conduit in a borehole penetrating an earthen formation by introducing such a cementing com-position into the space between such a conduit and a formation are disclosed. |
| priorityDate | 1990-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.