Abstract: A method for generating self-propped hydraulic fractures. In one embodiment, the method comprises injecting three fluid stages sequentially, each with successively higher viscosity, comprising a pad, a sealing slurry, and a displacement fluid which may be referred to as a sweep. Compositions of each of the three fluid stages are provided, each of which may be selected based upon characteristics of the formation being treated or upon one or more characteristics of the desired fracture.

Abstract: A method for generating self-propped hydraulic fractures. In one embodiment, the method comprises injecting three fluid stages sequentially, each with successively higher viscosity, comprising a pad, a sealing slurry, and a displacement fluid which may be referred to as a sweep. Compositions of each of the three fluid stages are provided, each of which may be selected based upon characteristics of the formation being treated or upon one or more characteristics of the desired fracture.

Abstract: A method for generating self-propped hydraulic fractures. In one embodiment, the method comprises injecting three fluid stages sequentially, each with successively higher viscosity, comprising a pad, a sealing slurry, and a displacement fluid which may be referred to as a sweep. Compositions of each of the three fluid stages are provided, each of which may be selected based upon characteristics of the formation being treated or upon one or more characteristics of the desired fracture.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: A fracture interrogation system includes an antenna adapted for placement in a subterranean wellbore and a plurality of pseudoparticles adapted for distribution with a proppant material into hydraulic fractures along the wellbore. The presence of the pseudoparticles in the hydraulic fractures is detectable by the antenna. The pseudoparticles can include a magnetoelastic resonator having a resonant frequency. An interrogation field excites the resonators at the resonant frequency for detection by the antenna. The same or a different antenna can act as the interrogation field source, and the system can be configured to operate in a talk-and-listen mode to better separate the response signal from the interrogation signal. Electromagnetic, mechanical, or acoustic impulses can be used to excite resonators of the pseudoparticles.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: A fracture interrogation system includes an antenna adapted for placement in a subterranean wellbore and a plurality of pseudoparticles adapted for distribution with a proppant material into hydraulic fractures along the wellbore. The presence of the pseudoparticles in the hydraulic fractures is detectable by the antenna. The pseudoparticles can include a magnetoelastic resonator having a resonant frequency. An interrogation field excites the resonators at the resonant frequency for detection by the antenna. The same or a different antenna can act as the interrogation field source, and the system can be configured to operate in a talk-and-listen mode to better separate the response signal from the interrogation signal. Electromagnetic, mechanical, or acoustic impulses can be used to excite resonators of the pseudoparticles.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: An air handler system comprising a cabinet housing a blower unit and a heat exchange unit. The blower unit and the heat exchange unit are located in a substantially same lateral dimension in the cabinet. The blower unit and the heat exchange unit are separated by a distance that provides for a substantially uniform flow of air through a vertically-orientated plane of the heat exchange unit when the blower unit is in operation.

Abstract: This invention generally relates to the field of oil recovery from reservoirs. More specifically, it relates to the recovery of oil from sandstone and carbonate reservoirs using a process for preparing a dispersion of capsules for use downhole including the steps of providing capsules containing a dense liquid, each capsule having a capsule wall defining an inner area, the capsule wall having an outer side. The capsules are functionalized by adding a carbon dioxide-philic compound compound to the outer side of the capsule wall. A dispersion is then prepared by adding the functionalized capsules to supercritical carbon dioxide such that a stable dispersion of capsules in supercritical carbon dioxide is achieved.

Abstract: The present invention includes single-walled carbon nanotube compositions for the delivery of siRNA and methods of making such single-walled carbon nanotube compositions. A single-walled carbon nanotube composition for delivery of siRNA includes a nonfunctionalized single-walled carbon nanotube; and siRNA noncovalently complexed with the nonfunctionalized single-walled carbon nanotube, wherein the siRNA solubilizes such nonfunctionalized single-walled carbon nanotube.

Abstract: An air handler system comprising a cabinet housing a blower unit and a heat exchange unit. The blower unit and the heat exchange unit are located in a substantially same lateral dimension in the cabinet. The blower unit and the heat exchange unit are separated by a distance that provides for a substantially uniform flow of air through a vertically-orientated plane of the heat exchange unit when the blower unit is in operation.

Abstract: The present invention includes single-walled carbon nanotube compositions for the delivery of siRNA and methods of making such single-walled carbon nanotube compositions. A single-walled carbon nanotube composition for delivery of siRNA includes a nonfunctionalized single-walled carbon nanotube; and siRNA noncovalently complexed with the nonfunctionalized single-walled carbon nanotube, wherein the siRNA solubilizes such nonfunctionalized single-walled carbon nanotube.

Abstract: A planar carbon segment commutator assembly made by forming an annular conductor substrate with an annular front projection extending integrally and axially from a front surface of the substrate. An annular carbon disk is formed on the conductor substrate by overmolding a carbon compound onto the front surface of the conductor substrate and around the annular front projection. The conductor substrate is mounted on an insulating hub. Electrically isolated, circumferentially-spaced commutator segments and corresponding mechanically interlocked conductor sections are formed by making radial cuts through the annular carbon disk and the metal substrate, respectively. According to one embodiment, each of the front projections has a greater cross-sectional area at a distal end than at a base end to mechanically lock the commutator segments onto the conductor sections.

Abstract: A planar carbon segment commutator assembly made by forming an annular conductor substrate with an annular front projection extending integrally and axially from a front surface of the substrate. An annular carbon disk is formed on the conductor substrate by overmolding a carbon compound onto the front surface of the conductor substrate and around the annular front projection. The conductor substrate is mounted on an insulating hub. Electrically isolated, circumferentially-spaced commutator segments and corresponding mechanically interlocked conductor sections are formed by making radial cuts through the annular carbon disk and the metal substrate, respectively. According to one embodiment, each of the front projections has a greater cross-sectional area at a distal end than at a base end to mechanically lock the commutator segments onto the conductor sections.

Abstract: A planar carbon segment commutator assembly made by forming an annular conductor substrate with an annular front projection extending integrally and axially from a front surface of the substrate. An annular carbon disk is formed on the conductor substrate by overmolding a carbon compound onto the front surface of the conductor substrate and around the annular front projection. The conductor substrate is mounted on an insulating hub. Electrically isolated, circumferentially-spaced commutator segments and corresponding mechanically interlocked conductor sections are formed by making radial cuts through the annular carbon disk and the metal substrate, respectively. According to one embodiment, each of the front projections has a greater cross-sectional area at a distal end than at a base end to mechanically lock the commutator segments onto the conductor sections.