| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ea6fc71be915a9cc9f73767e489a8d9b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_479ca79759c3f93060296e5e5d689ffb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_77678f40336e6b69d86e985d7314c2ff
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a3cfcf84a96201b526392ffd36e9cd95 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V1-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V11-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V1-50 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V1-50 |
| filingDate |
2005-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8635ec99a3806425dda1315081927e86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c5246298301d86706ffe0f050801e640
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_203a792bc8135a12af5f0466d8939580 |
| publicationDate |
2006-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2006067441-A1 |
| titleOfInvention |
Method and apparatus for determining the permeability of earth formations |
| abstract |
A Method and apparatus for determining the fluid permeability of an earth formation is described. An instrument (6) comprising an acoustic source (14, 16) and acoustic (18) and electrokinetic sensors (20) is located in a borehole (4) at a site of interest. The acoustic source is fired and the resulting variations in pressure and electric field generated are measured and recorded. The Biot equation, and an equation for the streaming potential coupled to fluid displacement terms, is solved using finite element analysis to give an expected pressure waveform and electrokinetic waveform based on estimated earth formation properties. By comparison of the measured waveforms and those calculated from the equations, the actual permeability of the earth formation can be deduced. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103760089-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2232193-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2232193-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2507914-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2507914-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013036155-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2803771-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103760089-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9766363-B2 |
| priorityDate |
2004-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |