A system and method for monitoring disposal of wastewater in a disposal well includes: an event monitor sensor configured to identify a wastewater disposal event; and a second sensor configured to collect data about one or more characteristics of the wastewater during the wastewater disposal event. The data from the second sensor at the disposal well is analyzed to determine a classification of the wastewater, which is then reported to an operator or another interested party.

Energy may be stored by injecting fluid into a fracture in the earth and producing the fluid back while recovering power and/or desalinating water. The method may be particularly adapted to storage of large amounts of energy such as in grid-scale electric energy systems. The fracture may be formed and treated with resin so as to limit fluid loss and to increase propagation pressure. The fluid may be water containing a dissolved salt or fresh water and a portion or all of the water may be desalinated using pressure in the water when it is produced.

Presented is a computerized method for management of a slurry injection well and the associated surface facility. The method utilizes real time and historical data of injection and slurry parameters in conjunction with computer simulations on a computer-modelled reservoir to predict well behavior during one or a series of injection events. The system determines optimized injection operation schedules, recommends and implements changes to an injection operation, including while in process such as through automated equipment control.

A method for recovering reservoir fluids from a target reservoir through a well includes analyzing formation properties of the target reservoir and of formation layers surrounding the target reservoir. A disposal zone is then selected within the target reservoir or the formation layers surrounding the target reservoir that is segregated from the reservoir fluids in the target reservoir. A well completion operation accesses the reservoir fluids in the target reservoir and directs flowback effluent from the well completion operation to the disposal zone using internal oil flooding equipment.

A separator for separating gas from a fluid mixture in a production stream of a well. The separator includes an outer tube and an inner tube positioned concentrically with the outer tube. The production stream is directed through the outer tube and into a space between a well casing of the well and the outer tube where gas in the production stream can separate from fluid in the production stream. The separated fluid is then directed through the inner tube to a pump.

A system for injecting a portion of a fluid waste into a well includes a fluid waste processor configured to receive the fluid waste and process the fluid waste for storage in the well, a primary sensor coupled to the fluid waste processor at a primary location, the primary sensor being configured to measure a fluid flow rate of the fluid waste, a hydrocarbon content of the fluid waste at or proximal to the primary location of the primary sensor being determined, and a data processor configured to determine an amount of carbon sequestered in the well based at least in part on a combination of the fluid flow rate and the hydrocarbon content.

A drilling fluid waste disposal system includes a trench having an outlet, a receiving pit in fluid communication with the outlet of the trench, a first weir in the receiving pit, and a second weir in the receiving pit. The outlet of the trench feeds a slurry to the receiving pit, such that the slurry is at least partially separated into a liquid-enriched portion and a fluid-enriched portion using the first and second weirs. The system also includes a pump configured to draw the liquid-enriched portion of the slurry from the receiving pit and configured to introduce the at least some of the liquid-enriched portion of the slurry back into the trench. The system further includes a drying apparatus in communication with the receiving pit configured to receive the solids-enriched portion of the slurry from a second position in the receiving pit.

A system for injecting a portion of a fluid waste into a well includes a fluid waste processor configured to receive the fluid waste and process the fluid waste for storage in the well, a primary sensor coupled to the fluid waste processor at a primary location, the primary sensor being configured to measure a fluid flow rate of the fluid waste, a hydrocarbon content of the fluid waste at or proximal to the primary location of the primary sensor being determined, and a data processor configured to determine an amount of carbon sequestered in the well based at least in part on a combination of the fluid flow rate and the hydrocarbon content.

A shaker assembly and method, of which the shaker assembly includes a shaker tank, a mixing tank in fluid communication with the shaker tank and positioned adjacent thereto, an overflow weir positioned between and separating the shaker tank and the mixing tank, a first shaker positioned over the shaker tank, and a second shaker. The first and second shakers are configured to operate in parallel to partially separate a solid from a liquid of a drilling waste fluid. During normal operation, at least some of the liquid flows from the first and second shakers to the shaker tank, and from the shaker tank over the overflow weir and into the mixing tank.

An example system is configured to manage the storage of water underground using a sensor-based grid system. The example system includes wells, each of which is between a surface and an underground formation capable of storing water received from the surface. The example system includes pumps, at least of which is associated with each well to force water from the surface, through the well, into the underground formation. The example system includes sensors, at least of which is associated with each well. The sensors are configured to communicate sensor data wirelessly. The example system also includes a computing system configured to receive sensor data from each of the sensors and to control operations of one or more of the pumps based on the sensor data.