http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102559155-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7e7ff7b952978f9fa9a414143713fa3 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-506 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03 |
| filingDate | 2011-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102559155-B |
| titleOfInvention | Strong-inhibition efficient shielding temporary plugging protection reservoir drilling fluid and preparation method thereof |
| abstract | The invention discloses strong-inhibition efficient shielding temporary plugging protection reservoir drilling fluid. The drilling fluid comprises the following components by weight percent: 2-5% of new shielding temporary plugging agent, 3-7% of inorganic salt inhibitor, 3-7% of organic inhibitor, 0.3-0.5% of low-viscosity polyanionic cellulose, 0.1-0.3% of high-viscosity polyanionic cellulose, 0.1-0.3% of viscosity enhancer, 0-3% of barite and the balance water, wherein NaOH is added to adjust the pH value to 9-10. The drilling fluid is used to effectively and temporarily plug the micro-cracks of the reservoir, has efficient plugging property and shallow layer property and ensures that some solid particles of the later drilling fluid can not enter the reservoir, thus the reservoir can be protected; and the drilling fluid has very good inhibitory property, and can balance the formation pressure and have the function of stabilizing the well wall. |
| priorityDate | 2011-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.