http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112240161-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-14 |
| filingDate | 2019-07-16^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-02-03^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-02-03^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112240161-B |
| titleOfInvention | A drilling speed-increasing tool |
| abstract | The present invention provides a drilling speed-increasing tool, comprising: a cylindrical shell; a support sleeve concentrically arranged in the shell, the support sleeve includes a central channel for drilling fluid to flow through, and the support sleeve Nozzles are provided to divide the drilling fluid into high-pressure drilling fluid and low-pressure drilling fluid; the axial impact mechanism includes a reversing hammer connecting cylinder, a torsional impact hammer connecting cylinder and a connecting cylinder for providing Axial impact hammer with axial impact force, wherein a first axial liquid cavity and a second axial liquid cavity are formed at both axial ends of the axial impact hammer, and the reversing hammer connects the barrel and the The connecting barrel of the torsional impact hammer can be relatively rotated, so that the first axial liquid chamber and the second axial liquid chamber communicate with high-pressure drilling fluid and low-pressure drilling fluid alternately, so that the axial impact hammer The reciprocating axial impact is generated under the action of the pressure difference. |
| priorityDate | 2019-07-16^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419512635 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID962 |
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