http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102634330-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_762cf9b03f3d33e2fac5d4f20dd4f7c6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F228-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F230-02 |
| filingDate | 2012-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f9d9b690e26c09cdee4b15b77470c7b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ca4d158df98159a9f829bb3333c6015 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c82f181330f3a9395d25f2151265a34c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb306d1f523a533cb78a223c88a8af9c |
| publicationDate | 2013-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102634330-B |
| titleOfInvention | Preparation method of multi-hydrogen acid for oil and gas reservoir |
| abstract | The invention relates to a preparation method of multi-hydrogen acid for an oil and gas reservoir, which is characterized in that the multi-hydrogen acid comprises three monomers including unsaturated fatty acid, unsaturated phosphonic acid and unsaturated sulfonic acid; and the preparation method comprises the steps of: leading the three monomers to have the proportion of (20-60%): (25-60%): (15-35%) according to the mass percent; respectively dissolving the three monomers in distilled water with the temperature of 10-50 DEG C, and preparing a water solution with the percent concentration of 15-55%; in the environment with the reaction temperature of 70-120 DEG C, adding ammonium persulfate and sodium hydrogensulfite into the water solution for initiating polymerization reaction, wherein the initiation time of the polymerization reaction is 1-6hours, and the dosages of the ammonium persulfate and the sodium hydrogensulfite are respectively 0.01-0.2% of the total mass of the monomers; and polymerizing the three monomers for generating a terpolymer to obtain the multi-hydrogen acid for acidification after compounding. The multi-hydrogen acid has higher capacity of complexing Ca, Mg and Fe ions, thus effectively reducing or preventing the risk that the stratum is blocked by secondary precipitation. |
| priorityDate | 2012-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.