http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AU-2013407239-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_989ecca69fc47fadd546bf9a0db59629 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F11-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E10-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22 |
| filingDate | 2013-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_312a5ef78b4fd44770b6d55773e0150f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69a56213339d28103e17b4b87519158b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81136efd91e62141d88dc301ed04e10f |
| publicationDate | 2016-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | AU-2013407239-A1 |
| titleOfInvention | Methods and systems for acidizing subterranean formations |
| abstract | A method for acidizing subterranean formations may include providing a treatment fluid comprising an aqueous carrier fluid, an acid, and a chelating agent comprising N-(phosphonomethyl)iminodiacetic acid, the treatment fluid having a pH at or below that at which carboxylic or phosphonic acid groups of the N-(phosphonomethyl)iminodiacetic acid are protonated and the chelating agent is ineffective for complexing a metal ion; introducing the treatment fluid into a wellbore penetrating a subterranean formation comprising a carbonate mineral; reacting the acid with the carbonate mineral in the presence of the chelating agent, such that the acid at least partially spends as the pH of the treatment fluid rises; and complexing a metal ion with the chelating agent once the pH of the treatment fluid rises above a pKa value for one or more of the carboxylic or phosphonic acid groups of the N-(phosphonomethyl)iminodiacetic acid. |
| priorityDate | 2013-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 125.