http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2648363-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c85d78c6a4459b5dbbc49c82a4c5c107 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-467 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-383 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-467 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-38 |
| filingDate | 2013-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d018ed4bf0dd464d030080906bf8a05d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06ed2352dce3bb489a8633681e6f06d2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c41638e6ec427391b811ba5825547f5a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c0485eb471da71ea1a177777e3a218dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d57e1b0ceceea0a11ab1db90c8788b0b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c975128dd42d984ee8723170825e7339 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd9a199249c733be8c1662530e2188f5 |
| publicationDate | 2018-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2648363-C2 |
| titleOfInvention | Cementing composition comprising nonionic hydrophobically-modified cellulose ethers and use thereof |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising: (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Hydrophobically modified hydroxyethyl cellulose preferably has an ethylene oxide molar substitution from 0.5 to 3.5, a hydrophobe degree of substitution from 0.001 to 0.025, and a weight- average molecular weight from 500,000 to 4,000,000 Da, and the dispersant is a sulfonated polymer, a condensation product of melamine and formaldehyde, a condensation product of sulfonated naphthalene and formaldehyde, a branched or unbranched polycarboxylate polymer. Aqueous cementing composition is preferably pumped downwards into said casing, pumped upwards into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets. Invention is developed in subclaims. n EFFECT: technical result is an increase in the effectiveness of said composition and method. n 16 cl, 1 tbl |
| priorityDate | 2012-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 83.