Class / Patent application number | Description | Number of patent applications / Date published |
507231000 | Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.) | 7 |
20110021387 | REVERSIBLE GELLING SYSTEM AND METHOD USING SAME DURING WELL TREATMENTS - An all-oil reversible gelling system includes a polymer, a crosslinker, a gel accelerator, and an oxidant, wherein temperature activates the crosslinker so as to cause the system to form a gel, and the oxidant subsequently decomposes the gel. This gel is designed to seal temporarily portions of oil-producing or water or gas injecting subterranean formations. | 01-27-2011 |
20110312859 | PROPPANTS CONTAINING DISPERSED PIEZOELECTRIC OR MAGNETOSTRICTIVE FILLERS OR MIXTURES THEREOF, TO ENABLE PROPPANT TRACKING AND MONITORING IN A DOWNHOLE ENVIRONMENT - In one aspect, the invention relates to a method for “tagging” proppants so that they can be tracked and monitored in a downhole environment, based on the use of composite proppant compositions containing dispersed fillers whose electromagnetic properties change at a detectable level under a mechanical stress such as the closure stress of a fracture. In another aspect, the invention relates to composite proppant compositions containing dispersed fillers whose electromagnetic properties change under a mechanical stress such as the closure stress of a fracture. The currently preferred embodiments use substantially spherical thermoset nanocomposite particles where the matrix comprises a terpolymer of styrene, ethylvinylbenzene and divinylbenzene, a PZT alloy manifesting a strong piezoelectric effect or Terfenol-D manifesting giant magnetostrictive behavior is incorporated to provide the ability to track in a downhole environment, and carbon black particles possessing a length that is less than 0.5 microns in at least one principal axis direction may optionally be incorporated as a nanofiller. | 12-22-2011 |
20130045901 | METHOD FOR THE FRACTURE STIMULATION OF A SUBTERRANEAN FORMATION HAVING A WELLBORE BY USING IMPACT-MODIFIED THERMOSET POLYMER NANOCOMPOSITE PARTICLES AS PROPPANTS - A method for fracture stimulation of a subterranean formation includes providing a thermoset polymer nanocomposite particle precursor composition comprising a polymer precursor mixture, dispersed within a liquid medium, containing at least one of an initiator; at least one of a monomer, an oligomer or combinations thereof, said monomer and oligomer having three or more reactive functionalities capable of creating crosslinks between polymer chains; at least one of an impact modifier; and nanofiller particles substantially dispersed within the liquid medium; subjecting the nanocomposite particle precursor composition to suspension polymerizing conditions; subjecting the resulting nanocomposite particles to heat treatment; forming a slurry comprising a fluid and a proppant that includes the heat-treated nanocomposite particles; injecting the slurry into a wellbore; and emplacing the proppant within a fracture network in the formation. | 02-21-2013 |
20160009987 | PROPPANTS CONTAINING DISPERSED PIEZOELECTRIC OR MAGNETOSTRICTIVE FILLERS OR MIXTURES THEREOF, TO ENABLE PROPPANT TRACKING AND MONITORING IN A DOWNHOLE ENVIRONMENT | 01-14-2016 |
20160053158 | Sealant Compositions and Methods Utilizing Nano-Particles - The present invention includes well treatment fluids and methods utilizing nano-particles and, in certain embodiments, to sealant compositions and methods utilizing nano-particles. The nano-particles may be incorporated into the sealant composition in different forms, including as discrete nano-particles, encapsulated nano-particles, agglomerated nano-particles, or in a liquid suspension. | 02-25-2016 |
20160068739 | Compositions And Methods For Servicing Subterranean Wells - This invention relates to methods for servicing subterranean wells, in particular, fluid compositions and methods for remedial operations during which the fluid compositions are pumped into a wellbore and make contact with well cements placed during primary cementing or previous remedial cementing operations. | 03-10-2016 |
20160130498 | POLYMER PROPPANT AND METHOD FOR PRODUCING SAME - The polymer proppant and method for producing the same relate to oil and gas production technology using materials of high-molecular weight compounds with higher requirements for physical and mechanical properties. The proppant is used as propping granules utilized in the oil and gas production by a method of hydraulic fracturing of formation. The technical result achieved by implementation of the present invention is an increase in thermal strength of the proppant whose material provides a compressive strength of at least 150 MPa at a temperature of not less than 100° C. The polymer proppant represents microspheres of metathesis-radically cross-linked mixture of oligocyclopentadienes. | 05-12-2016 |