http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-026696-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_989ecca69fc47fadd546bf9a0db59629 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-524 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-508 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-508 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-524 |
| filingDate | 2012-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b32264398154f3f5e53c2205894222e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66aea20212faec98d8869751f600c7e7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0d1291bcae6210ab0edf5ad5d867d2e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a63d693122c489cae448e99c0ca1b7ca |
| publicationDate | 2017-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EA-026696-B1 |
| titleOfInvention | METHOD FOR REMOVING FILTRATION CORK AT LOW TEMPERATURE (OPTIONS) |
| abstract | An embodiment of the present invention proposes a method for removing a filter cake, comprising (a) providing a filter cake containing a polymer and a tamping agent on the surface inside a subterranean formation, said filter cake being in the form of a deposit along the borehole wall from a treatment fluid containing water, plugging agent and the specified polymer; (b) providing a fluid to clean the filter cake containing an aqueous fluid and L-glutamic N, N-diacetic acid, wherein said fluid for cleaning the filter cake has a pH value of 5 or higher; and (c) bringing said filter cake into contact with said fluid for cleaning filter cake at a temperature of 120 ° F (49 ° C) or lower to give a return permeability adjacent to the filter cake of the subterranean formation at least 86% where said tamponing agent is calcium carbonate, magnesium citrate, calcium citrate, calcium succinate, calcium maleate, calcium tartrate, magnesium tartrate, bismuth citrate, hydrates of the listed substances, or any combination of the above, and specified by Emer is a starch, xanthan, succinoglycan, hydroxyethylcellulose, cross-linked hydroxyethylcellulose, guar or hydroxypropyl guar. |
| priorityDate | 2011-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 89.