| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7d9f38dad6342df09dea6b5c21b73725 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-924 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-62 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-267 |
| filingDate |
2004-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01e8ca2a33e3f93f81d2a3325af90d0f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be28e35b39b399b35e467d8a163dfbdc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a99691943f20bab0f36a5e329cc8730
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a37995fbc12748a027702cb0683beb6f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca3dcfa283fee3aac87d7262f0a8c836
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1e8ff61991c78fa412d3a1ee48cf77b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0cb5e49cc428cdc08fa2b4ac0b51108b |
| publicationDate |
2004-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2004083600-A1 |
| titleOfInvention |
Method of treating subterranean formations using mixed density proppants or sequential proppant stages |
| abstract |
An increase in effective propped lengths is evidenced in hydraulic fracturing treatments by the use of ultra lightweight (ULW) proppants. The ULW proppants have a density less than or equal to 2.45 g/cc and may be used as a mixture in a first proppant stage wherein at least one of the proppants is a ULW proppant. Alternatively, sequential proppant stages may be introduced into the formation wherein at least one of the proppant stages contain a ULW proppant and where at least one of the following conditions prevails: (i.) the density differential between the first proppant stage and the second proppant stage is greater than or equal to 0.2 g/cc; (ii.) both the first proppant stage and the second proppant stage contain a ULW proppant; (iii.) the rate of injection of the second proppant stage into the fracture is different from the rate of injection of the first proppant stage; or (iv.) the particle size of the second proppant stage is different from the particle size of the first proppant stage. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9919966-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7207386-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7772163-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11008506-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9234415-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8714248-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7757768-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8133587-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7334635-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11111766-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7699106-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012170522-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10988678-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10041327-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8003214-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8459353-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7726399-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015021523-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9388334-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8689872-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8448706-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9920607-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2017065779-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9938811-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9920610-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7934557-B2 |
| priorityDate |
2003-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |