| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_07cca76f78a88d28aef58a63915138ba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_71fa7329942b0ae5791f4d62b8f60ca7 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-25 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B28-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V1-155 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-25 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B28-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V1-155 |
| filingDate |
2014-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2015-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_670118d3074d5abd1c3a4138c9c36226
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ae7116de2a07ca7a7bb3532d359b433 |
| publicationDate |
2015-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9027636-B2 |
| titleOfInvention |
Tunable down-hole stimulation system |
| abstract |
Tunable down-hole stimulation systems feature closed-loop control of pumps and tunable down-hole stimulators. Stimulators generate and hydraulically transmit broad vibration spectra tuned for resonance excitation and fracturing of geologic materials adjacent to the wellbore. Feedback data for controlling stimulation includes backscatter vibration originating in stimulated geologic material and detected at the stimulator(s). For initial fracturing with relatively large particle sizes, the power spectral density (PSD) of each stimulator output is down-shifted toward the lower resonant frequencies of large particles. As fracturing proceeds to smaller (proppant-sized) fragments having higher resonant frequencies, backscatter vibration guides progressive up-shifting of stimulator PSD to higher vibration frequencies. Stimulator power requirements are minimized by concentrating vibration energy efficiently in frequency bands to which geologic materials are most sensitive at every stage of stimulation. Geologic fragmentation efficiency is thus optimized, with inherent potential for plain-water fracs completed with self-generated proppant. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017114620-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9879507-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9777556-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10844854-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385841-B2 |
| priorityDate |
2011-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |