http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109679614-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 |
| filingDate | 2017-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109679614-B |
| titleOfInvention | Method for water drainage and gas recovery by adopting high-temperature-resistant acid-resistant solid foam drainage agent |
| abstract | The invention relates to a drainage method by adopting a high-temperature-resistant and acid-resistant solid foam drainage agentThe method of gas mainly solves the problem that the prior foam water discharging agent contains H 2 S、CO 2 The high-temperature and high-salt resistance performance in an acidic environment is poor, and the problems of yield reduction, even spray stopping and difficult filling of the liquid foam discharging agent caused by liquid loading of a high-temperature and high-salt ultra-deep gas well cannot be solved. The invention adopts the following steps: 1) mixing the solid foam drainage agent composition with water to obtain a foam drainage agent solution; 2) fully contacting a foam drainage agent solution or a mixed solution of the foam drainage agent solution and oil with gas to form a foam fluid, and displacing water or an oil-water mixture in the foam drainage agent solution; wherein the solid foam discharging agent composition comprises: the technical scheme of 1 part of polyamine surfactant shown in the formula (1), 0.05-1000 parts of solid filler and 0-0.5 part of adhesive well solves the problem and can be used for drainage and gas production of acidic high-temperature high-salt ultra-deep gas wells. |
| priorityDate | 2017-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 134.