CH2M Hill, Inc.
|CH2M Hill, Inc. Patent applications|
|Patent application number||Title||Published|
|20120086580||Intelligent Universal Wireless Adapter - A system for communication in an oil and gas well, the system including a controller, a first universal wireless adapter (UWA) wirelessly coupled to the controller, where the UWA is coupled to a first field device, a second UWA wirelessly coupled to the controller, where the UWA is coupled to a second field device, where the controller passes a control token among the first and second UWAs based upon communication traffic between the first and second UWA and the first and second field devices respectively. In some embodiments, this control token may be passed between the first and second UWAs depending upon communications between the respective UWAs and their field devices. For example, in the event that communication traffic is greater between the first UWA and the first field device, then the control token is passed to the first UWA.||04-12-2012|
|20110192776||LOW PHOSPHORUS WATER TREATMENT SYSTEMS - A water or wastewater treatment system to reduce phosphorus or other pollutant concentrations in water or wastewater may include an optional primary treatment stage in fluid communication with a biological secondary treatment stage. The secondary treatment stage may, in turn, be fluidly connected with a tertiary treatment stage, which may include a chemical treatment portion for reducing phosphorus or other pollutants to desired levels. The precipitated phosphorus and other solids or sludge produced from the chemical treatment portion may be recycled upstream for reuse in the primary, secondary, and/or tertiary treatment stages. Such recycle may reduce the amount of added chemicals required in the tertiary treatment stage to phosphorus or other pollutants to desired amounts.||08-11-2011|
|20110132837||Method and System for Treating Wastewater - Methods and systems for utilizing biological wastewater treatment processes to remove nutrients from wastewater containing reduced sulfide compounds may include treating the wastewater in an anaerobic zone, an anoxic zone, and an aerobic zone. The wastewater is first treated in the anaerobic zone to uptake residual biodegradable organic material using specialized bacteria known as phosphorus accumulating organisms (“PAOs”) and glycogen accumulating organisms (“GAOs”). After treatment in the anaerobic zone, the wastewater is treated in an anoxic zone to convert nitrates to nitrogen gas and sulfur to sulfates. Following treatment in the anoxic zone, the wastewater is treated in the aerobic zone to oxidize ammonia to nitrate and to complete removal of phosphorus. After treatment in the aerobic zone, the wastewater may be treated in other zones, or may be delivered to a liquid-solids treatment stage.||06-09-2011|
|20110060472||Methods and Apparatuses for Optimizing Wells - Methods and apparatuses are disclosed for optimizing oil and gas wells. Some embodiments may include optimizing a gas well based upon continuous measurements of the well's operating parameters, such as casing pressure draw down and/or line pressure surges. These continuous measurements of the well's parameters may be utilized to derive an empirical model of the well's behavior that is more accurate than conventional approaches with respect to the various stages of well production. In other words, by measuring the well's operating parameters continuously and measuring certain well parameters (like casing pressure draw down and/or surges in line pressure from opening the well), the empirical model derived therefrom may provide more accurate control of turn on criteria of the well than conventional approaches, such as during the mature production stage of production of the well.||03-10-2011|
|20100224570||Water Intake Structure - Water intake structures for power plants and other industrial facilities may include an inflow channel, a deep well, an outflow channel, and an intake channel These structures may include a fish screen, such as a wedge-wire screen or the like, positioned between the deep well and the intake channel to separate fish, fish larvae and fish eggs from water supplied to the intake channel from the deep well. These structures may further include one or more circulating or sweep flow pumps positioned proximate an outlet of the outflow channel. The sweep flow pumps may be used to maintain a sweep flow through the deep well of the intake structure to help sweep fish, fish larvae and fish eggs away from the fish screen and into the outflow channel.||09-09-2010|
|20100101774||Measurement and Control of Liquid Level in Wells - Methods and apparatuses are disclosed for measuring and controlling liquid levels in a well. The apparatus may include a plurality of sensors, the plurality of sensors comprising: a first sensor coupled to the well, the first sensor configured to measure a casing pressure, a second sensor coupled to the well, the second sensor configured to measure a tubing pressure, and a third sensor coupled to a motor that is further coupled to the well, the third sensor configured to measure at least one characteristic of the motor, and a processor coupled to the plurality of sensors, wherein the processor calculates a level of liquid in the well based upon measurements of at least two of the plurality of sensors.||04-29-2010|
|20100051110||GAS ACTUATED VALVE - A method and system to pulse at least one solenoid valve to regulate the volume of instrument air or other gas (e.g. nitrogen or natural gas) to the supply side or from the discharge side of a diaphragm actuator. The diaphragm actuator operates a primary variable flow/choke control valve in response to process control signals.||03-04-2010|
|20090177458||SYSTEMS AND METHODS FOR SOLAR MAPPING, DETERMINING A USABLE AREA FOR SOLAR ENERGY PRODUCTION AND/OR PROVIDING SOLAR INFORMATION - A method of determining usable area of a structure for solar energy production may include obtaining a three-dimensional model of a structure and obstructions associated therewith, and performing a shading analysis using the obtained three-dimensional model to obtain a usable area of the structure. A method of providing solar information for a structure using a Web portal may include providing an interactive map, receiving a user selection of a structure located on the interactive map, and providing solar information for the selected structure, wherein the solar information is based at least in part on a usable area obtained by performing a shading analysis using a three-dimensional model of the structure and obstructions associated therewith. A system for providing an interactive Web portal may include a database including solar information regarding a structure, and a server configured to access the database to retrieve the solar information and provide the Web portal.||07-09-2009|
|20090130013||METHODS AND SYSTEMS FOR ENHANCING MERCURY, SELENIUM AND HEAVY METAL REMOVAL FROM FLUE GAS - A method for treating flue gas may include adding iron to a slurry in a ratio between approximately 20-to-1 and 5000-to-1 by weight of iron to a weight of mercury, selenium or other heavy metal to be removed from the flue gas, and contacting the slurry with the flue gas in a flue gas desulfurization system. A system for treating flue gas may include a scrubber, a slurry tank, and a water source. Water and limestone may be combined in the slurry tank to form a limestone slurry. At least a portion of the limestone slurry may be used to treat flue gas in the scrubber. Iron may be added to at least a portion of the limestone slurry used to treat flue gas in the scrubber. The iron used in either the method or system may be a ferrous or ferric salt, or elemental iron.||05-21-2009|
|20080302723||LOW PHOSPHOROUS WATER TREATMENT METHODS AND SYSTEMS - A water or wastewater treatment system to reduce phosphorous or other pollutant concentrations in water or wastewater may include an optional primary treatment stage in fluid communication with a biological secondary treatment stage. The secondary treatment stage may, in turn, be fluidly connected with a tertiary treatment stage, which may include a chemical treatment portion for reducing phosphorous or other pollutants to desired levels. The precipitated phosphorous and other solids or sludge produced from the chemical treatment portion may be recycled upstream for reuse in the primary, secondary, and/or tertiary treatment stages. Such recycle may reduce the amount of added chemicals required in the tertiary treatment stage to phosphorous or other pollutants to desired amounts.||12-11-2008|
|20080223793||Treatment of Particulate Biodegradable Organic Waste by Thermal Hydrolysis Using Condensate Recycle - A method of treating particulate biodegradable organic waste by thermal hydrolysis. The method includes subjecting a quantity of the particulate biodegradable waste to thermal hydrolysis at a temperature above about 130° C. and a pressure at or above the saturated water vapor pressure to produce a slurry. The slurry will include solubilized organic material and unhydrolyzed residual solids. The method further includes decreasing the pressure at which the slurry is maintained. Typically, the step of decreasing slurry pressure will occur in a flash tank, which allows the separation of an organic acid-rich steam from other hydrolysis products. The method further includes capturing the steam or other condensable gases released when pressure is decreased and condensing the steam or other condensable gases into a condensate. The captured condensate may then be added to a quantity of particulate biodegradable waste prior to thermal hydrolysis. Also disclosed is an apparatus for practicing the method described above.||09-18-2008|
Patent applications by CH2M Hill, Inc.