- Email: [email protected]
5532841 Facsimile apparatus comprising a plurality of image reading units
431
PatentsALERT
5515679 GEOTHERMAL HEAT MINING AND UTILIZATION Shulman Gary; Elmira, NY, UNITED STATES assigned to pevack Jerome; Whitelaw Robert L Method and apparatus for recovering and utilizing thermal energy from subterranean hot rock by means of a self-powered closed system which transfers heat from the hot rock to a relatively cool liquid, e.g. water, flowing in a heat-conducting pipe that extends in a loop descending from the earth's surface to and through the hot rock to a depth, e.g., in the range of 5,000 to 50,000 feet, and connects to the bottom of a heat-insulated riser in which the heated liquid flow ascends to the surface. The heated flow is processed at the surface to utilize recovered thermal energy and is cooled, and the cooled liquid is recycled to the hot rock. A plurality of descending pipe loops are disposed radially a horizontal distance away from said riser and each is connected to the riser. A manifold connecting said pipes at the surface permits rotation of the descending liquid among the pipe loops for continuous operation. The natural temperature of the subterranean hot rock increases with depth causing the temperature of the liquid in the pipes to increase as it descends. The heated flow in the ~ser ascends to the surface by thermo-siphon circulation which results from the hydraulic head difference between the descending higher density relatively cool liquid flow and the ascending lower density flow of heated liquid and flashed vapor. At the surface, the thermal energy of the heated flow in the riser is recovered and utilized, e.g., by heat exchange and/or by use of flashed vapor in a condensing power cycle, and the cooled liquid flow therefrom is recycled to the manifold and pipes for another heat gathering circuit.
5531272 LOW TEMPERATURE UNDERWATER EPOXY SYSTEM FOR ZONE ISOLATION, REMEDIAL CEMENTING, AND CASING REPAIR Ng Ricky C; McPherson Thurman W; Dallas, TX, UNITED STATES assigned to Mobil Oil Corporation
A method for zone isolation or replacing a damaged or corroded casing with a solid plastic is described herein. A resin/curing agent mixture sufficient to form a hardened plastic or solid, underwater and/or at low wellbore temperatures that is also able to withstand downhole stresses, is placed into the wellbore so as to bind with the undamaged casing and close off any thief zone. Subsequently, the resin/curing agent mixture forms a hardened solid. The hardened solid is milled out if necessary so as to form a resinous casing the size of the original casing. Later, the hardened resinous casing is perforated to communicate with a targeted zone. Perforation is not required when isolating a zone. The hardened solid is of a strength sufficient to withstand stresses generated during EOR operations such as carbon dioxide or steam-flooding. Said solid is also resistant to workover acids and other chemicals used in EOR operations.
5532841 FACSIMILE APPARATUS COMPRISING A PLURALITY OF IMAGE READING UNITS Nakajima Aid; Muramatsu Hide; Suzuki Hiroyuk; Hamano Kanako; Toyokawa, JAPAN assigned to Minolta Camera Kabushiki Kalsha A facsimile apparatus includes a plurality of image reading units, each reading an image and converting the read image into image data, and a main controlling unit for receiving image data through a communication line and transmitting the received image data through another communication line to another facsimile apparatus of a destination. In the main controlling unit of the facsimile apparatus, a selector selects one of the image reading units, and a communication line connection controller connects the main controlling unit through the communication line with the selected one of the image reading units. Further, a data receiver receives image data from one of the image reading units connected through the communication line by the communication line connection controller.
PatentsALERT
5515679 GEOTHERMAL HEAT MINING AND UTILIZATION Shulman Gary; Elmira, NY, UNITED STATES assigned to pevack Jerome; Whitelaw Robert L Method and apparatus for recovering and utilizing thermal energy from subterranean hot rock by means of a self-powered closed system which transfers heat from the hot rock to a relatively cool liquid, e.g. water, flowing in a heat-conducting pipe that extends in a loop descending from the earth's surface to and through the hot rock to a depth, e.g., in the range of 5,000 to 50,000 feet, and connects to the bottom of a heat-insulated riser in which the heated liquid flow ascends to the surface. The heated flow is processed at the surface to utilize recovered thermal energy and is cooled, and the cooled liquid is recycled to the hot rock. A plurality of descending pipe loops are disposed radially a horizontal distance away from said riser and each is connected to the riser. A manifold connecting said pipes at the surface permits rotation of the descending liquid among the pipe loops for continuous operation. The natural temperature of the subterranean hot rock increases with depth causing the temperature of the liquid in the pipes to increase as it descends. The heated flow in the ~ser ascends to the surface by thermo-siphon circulation which results from the hydraulic head difference between the descending higher density relatively cool liquid flow and the ascending lower density flow of heated liquid and flashed vapor. At the surface, the thermal energy of the heated flow in the riser is recovered and utilized, e.g., by heat exchange and/or by use of flashed vapor in a condensing power cycle, and the cooled liquid flow therefrom is recycled to the manifold and pipes for another heat gathering circuit.
5531272 LOW TEMPERATURE UNDERWATER EPOXY SYSTEM FOR ZONE ISOLATION, REMEDIAL CEMENTING, AND CASING REPAIR Ng Ricky C; McPherson Thurman W; Dallas, TX, UNITED STATES assigned to Mobil Oil Corporation
A method for zone isolation or replacing a damaged or corroded casing with a solid plastic is described herein. A resin/curing agent mixture sufficient to form a hardened plastic or solid, underwater and/or at low wellbore temperatures that is also able to withstand downhole stresses, is placed into the wellbore so as to bind with the undamaged casing and close off any thief zone. Subsequently, the resin/curing agent mixture forms a hardened solid. The hardened solid is milled out if necessary so as to form a resinous casing the size of the original casing. Later, the hardened resinous casing is perforated to communicate with a targeted zone. Perforation is not required when isolating a zone. The hardened solid is of a strength sufficient to withstand stresses generated during EOR operations such as carbon dioxide or steam-flooding. Said solid is also resistant to workover acids and other chemicals used in EOR operations.
5532841 FACSIMILE APPARATUS COMPRISING A PLURALITY OF IMAGE READING UNITS Nakajima Aid; Muramatsu Hide; Suzuki Hiroyuk; Hamano Kanako; Toyokawa, JAPAN assigned to Minolta Camera Kabushiki Kalsha A facsimile apparatus includes a plurality of image reading units, each reading an image and converting the read image into image data, and a main controlling unit for receiving image data through a communication line and transmitting the received image data through another communication line to another facsimile apparatus of a destination. In the main controlling unit of the facsimile apparatus, a selector selects one of the image reading units, and a communication line connection controller connects the main controlling unit through the communication line with the selected one of the image reading units. Further, a data receiver receives image data from one of the image reading units connected through the communication line by the communication line connection controller.