Abstract: A method for pollutant sensor placement is described. Data about environmental characteristics across a geographic region is received from a plurality of environmental sensors. The geographic region includes one or more pollutant sources that emit a pollutant. The received data is transformed from one or more of the plurality of environmental sensors into common data having a common grid across the geographic region. The geographic region is divided into a plurality of sub-regions based on the common data. Locations within the geographic region are determined for placement of pollutant sensors based on estimated dispersion of the pollutant through the plurality of sub-regions.

Abstract: A system for enhancing a flow of a fluid induced by a rod pumping unit is provided. The system includes one or more sensors and a pumping control unit configured to control stroke movement of the rod pumping unit. The pumping control unit is configured to: (a) initiate at least one stroke of the rod pumping unit; (b) receive sensor data from the one or more sensors; (c) upon determination of a violation of a first set of constraints, make a first adjustment to the current stroke timing, and return to step (a); (d) upon determination of a violation of a second set of constraints, make a second adjustment to the current stroke timing, and return to step (a); and (e) upon determination of no violation of at least one set of constraints make a third adjustment to the current stroke timing, and return to step (a).

Abstract: A control system for a rod pumping unit is disclosed herein. The control system includes a memory device, a sensor, and a processor. The memory device is configured to store a velocity profile for controlling a sucker rod string of the rod pumping unit. The sensor is configured to take measurements for determining surface load of the sucker rod string. The processor is configured to gain access to the memory device and the velocity profile. The processor is further configured to determine a reference force. The processor is further configured to receive a measurement from the sensor and determine the surface load. The processor is further configured to compute a desired velocity for commanding the rod pumping unit. The desired velocity is computed based on a reference velocity from the velocity profile, the reference force, and the surface load.

Abstract: A system for enhancing a flow of a fluid induced by a rod pumping unit is provided. A pumping control unit is configured to control stroke movement of the rod pumping unit. The pumping control unit is configured to store a first set of stroke timing data based on a first pressure level and a second set of stroke timing data based on a second pressure level, store a set of pressure weights, and receive a current pressure level. The current pressure level is between the first pressure level and the second pressure level. The pumping control unit is also configured to determine a current set of stroke timing data based on the current pressure level, the first set of stroke timing, the second set of stroke timing, and the set of pressure weights, and initiate at least one stroke of the rod pumping unit.

Abstract: A control system for a rod pumping unit is disclosed herein. The control system includes a memory device, a sensor, and a processor. The memory device is configured to store a velocity profile for controlling a sucker rod string of the rod pumping unit. The sensor is configured to take measurements for determining surface load of the sucker rod string. The processor is configured to gain access to the memory device and the velocity profile. The processor is further configured to determine a reference force. The processor is further configured to receive a measurement from the sensor and determine the surface load. The processor is further configured to compute a desired velocity for commanding the rod pumping unit. The desired velocity is computed based on a reference velocity from the velocity profile, the reference force, and the surface load.

Abstract: A system for enhancing a flow of a fluid induced by a rod pumping unit is provided. The system includes one or more sensors and a pumping control unit configured to control stroke movement of the rod pumping unit. The pumping control unit is configured to: (a) initiate at least one stroke of the rod pumping unit; (b) receive sensor data from the one or more sensors; (c) upon determination of a violation of a first set of constraints, make a first adjustment to the current stroke timing, and return to step (a); (d) upon determination of a violation of a second set of constraints, make a second adjustment to the current stroke timing, and return to step (a); and (e) upon determination of no violation of at least one set of constraints make a third adjustment to the current stroke timing, and return to step (a).

Abstract: A system for enhancing a flow of a fluid induced by a rod pumping unit is provided. A pumping control unit is configured to control stroke movement of the rod pumping unit. The pumping control unit is configured to store a first set of stroke timing data based on a first pressure level and a second set of stroke timing data based on a second pressure level, store a set of pressure weights, and receive a current pressure level. The current pressure level is between the first pressure level and the second pressure level. The pumping control unit is also configured to determine a current set of stroke timing data based on the current pressure level, the first set of stroke timing, the second set of stroke timing, and the set of pressure weights, and initiate at least one stroke of the rod pumping unit.