http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7497262-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8cac4ca8509c3ca45aca9a0274628c6e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-24 |
| filingDate | 2007-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2009-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff9a3e3a9f043bf0786cfd4d5fa9ea8c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b652de784feb92cea919eca44fed449 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af86a618e553faa1c958a4b8d676524e |
| publicationDate | 2009-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7497262-B2 |
| titleOfInvention | High performance water-based drilling mud and method of use |
| abstract | A method of forming a subterranean well and a method of reducing the swelling of shale clay during the drilling of the subterranean well. The method features the use of a water based drilling fluid, wherein the drilling fluid is formulated to include: an aqueous based continuous phase; a weight material; an optional shale hydration inhibition agent and a shale encapsulator. The shale encapsulator has the formula: n nin which x and y have a value so that the molecular weight of the cation is in the range of about 10,000 to about 200,000 AMU; A is selected from C 1 -C 6 alkyl, C 2 -C 6 ether or C 2 -C 6 amide; R, R′and R″are independently selectable C 1 -C 3 alkyl; and B − is a charge balancing anion to the quaternary amine. The shale hydration inhibition agent and the shale encapsulator may be present in sufficient concentrations to reduce the swelling of the subterranean formation in the presence of water. Conventional additives may be included into the formulation of the drilling fluid, including: fluid loss control agents, alkaline reserve and other pH control agents, bridging agents, lubricants, anti-bit balling agents, corrosion inhibition agents, surfactants, solids suspending agents, and mixtures and combinations of these and other similar additives. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103666407-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103666407-A |
| priorityDate | 2003-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.