http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107663446-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-52 |
| filingDate | 2016-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107663446-B |
| titleOfInvention | Blocking remover for oil-based drilling fluid and preparation method thereof |
| abstract | The invention discloses a blocking remover for an oil-based drilling fluid, which comprises the following components in percentage by weight: 10-20% of acid liquor, 4-6% of emulsifier, 2-4.5% of dispersant, 1-3% of solubilizer, 1-3% of waterproof locking agent, 1-2% of chelating agent, 0.1-0.3% of cleanup additive and the balance of water; wherein the acid solution is selected from hydrochloric acid, nitric acid, phosphoric acid and composite acid; the waterproof locking agent is composed of fatty alcohol-polyoxyethylene ether, alkyl sodium sulfonate, polyoxyethylene ester and water. The blocking remover for the oil-based drilling fluid disclosed by the invention has the following beneficial effects: (1) the comprehensive performance is good, the cost is low, the waterproof locking agent in the blockage removing system can effectively protect an oil layer, and the secondary damage to the oil layer is reduced. (2) The preparation is simple, other treating agents are not needed to be added on site, and only water is needed to be added to dilute the mixture into the designed concentration. |
| priorityDate | 2016-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.