Abstract: A spool valve assembly and methods for use downhole to control fluid flow into a borehole from a downhole formation. The assembly includes a valve body having an interior. The assembly also includes a spool moveable within the valve body interior from a first position wherein the spool prevents flow through the valve body, to a second position wherein the spool allows flow through the valve body at a first flow rate, and to a third position wherein the spool allows flow through the valve body at a second flow rate different than the first flow rate. The spool is moveable from the first position to the second position using hydrostatic fluid pressure acting on the spool from outside the valve body. The spool is moveable from the second position to the third position using gas pressure from a chemical reaction producing a force sufficient to overcome the hydrostatic pressure.

Abstract: An apparatus to be positioned in a geothermal wellbore formed in a subsurface formation. The apparatus comprises one or more components to inject a supercritical fluid into the subsurface formation. The apparatus comprises a flow control assembly configured to control flow of the supercritical fluid into the geothermal wellbore based on a density of the supercritical fluid in the subsurface formation.

Abstract: Regulating downhole fluid flow through a plurality of valves to treat wellbore sections while also allowing for production to continue. If it is determined that fluid flow through a valve of a plurality of valves is below a threshold, maintaining fluid flow through the below threshold valve may be maintained while restricting fluid flow through other valves of the plurality. This restriction fluidly isolates a section of a well from other sections of the well. Once isolated, a treatment substance may be injected through the below threshold valve into the isolated section of well. Afterwards, the closed valves may be reopened while restricting fluid flow through the treated section valve for a threshold period of time, the treated section valve may then be reopened after the threshold period of time.

Abstract: Provided is a downhole tool and a well system. The downhole tool, in one aspect, includes a tubular providing one or more production fluid flow paths for a production fluid. The downhole tool, according to this aspect, further includes one or more float chambers located within the tubular, and two or more floats located within the one or more float chambers. In one aspect, a first of the two or more floats has a first density (?1) between a density of gas (?g) and a density of oil (?o), and a second of the two or more floats has a second density (?2) between the density of oil (?o) and a density of water (?w). The downhole tool, according to this aspect, further includes two or more non-contact proximity sensors configured to sense a radial location of the two or more floats to determine a gas:oil ratio and oil:water ratio.

Abstract: Provided is a float for use with a fluid flow control device, a fluid flow control device, a method for manufacturing a fluid flow control device, and a well system. The float, in one aspect, includes a ceramic base material having one or more cavities therein, the ceramic base material and the one or more cavities creating a net density for the float that is between a first density of a desired fluid and a second density of an undesired fluid, such that the float may control fluid flow through a flow control device when encountering the desired fluid or the undesired fluid.

Abstract: A fluid flow control device, a well system, and a method are provided. The fluid flow control device, in one aspect, may include an inlet port, allowing a downhole fluid of a borehole to flow into the fluid flow control device, and an outlet port, allowing the downhole fluid to flow out of the fluid flow control device. The fluid flow control device, in accordance with this aspect, may further include a fluid chamber positioned between the inlet port and the outlet port, wherein an electrokinetic film is located within the fluid chamber and is capable of generating a voltage as the downhole fluid flows over the electrokinetic film.

Abstract: A plurality of flow control nodes are spaced along a production conduit for controlling a flow of formation fluids into the production conduit at different locations in the well. Each flow control node defines a flow path for entry of the formation fluids into the production conduit. A closure is operable to adjust the flow of the formation fluids into the production conduit. A generator at each zone generates electrical power in response to a portion of the flow directed through the generator. An electrical power grid interconnects the plurality of flow control nodes to collectively supply electrical power to the power grid. Each closure and other device components are operable with the electrical power from the power grid.

Abstract: A magnetic coupling mechanism in a downhole flow control tool comprising a first chamber within a flow path of wellbore fluids with a first component comprising a Halbach array of magnets. A second chamber isolated from the wellbore environment comprises a second component with a Halbach array of magnets. The first chamber and the second chamber are coupled with a nonmagnetic separation. The second component is translated with the first component by a strong magnetic flux produced by the array of magnets.

Abstract: Provided is a fluid flow control device, a well system, and method. The fluid flow control device, in one aspect, includes an inlet port, an outlet port, and a fluid chamber positioned between the inlet and outlet ports. The fluid flow control device, in one aspect, may further include a float positioned within the fluid chamber, the float having a net density that is between a first density of a desired fluid and a second density of an undesired fluid, such that the float may control fluid flow through the fluid flow control device when encountering the desired fluid or undesired fluid. The fluid flow control device, in one aspect, may further include a fluid mixer positioned uphole of the fluid chamber, the fluid mixer configured to receive unmixed or partially mixed fluid and turn it to mixed inlet fluid prior to the mixed inlet fluid encountering the fluid chamber.

Abstract: A downhole system may include a housing disposed about a downhole tubular. The housing has a nozzle chamber in fluid communication with an annulus of a wellbore. The downhole system further includes a flow control device nozzle disposed within the nozzle chamber and configured to control a fluid flow rate through the nozzle chamber. The downhole system includes a ball disposed within the nozzle chamber. The ball is moveable to plug the nozzle chamber in response to fluid flow from the central bore of the downhole tubular toward the annulus. Additionally, the downhole system includes a piston chamber in fluid communication with the nozzle chamber and a central bore of a downhole tubular. Further, the downhole system includes a piston that is slidable within the piston chamber between a run-in position and an open position. The piston blocks the ball from traversing into the piston chamber in the run-in position.

Abstract: A transition in the fluid composition of a production fluid is detectable downhole based on a rotational response of a rotor through which flow is directed. The transition is detectable, at least in part, based on different rotational speeds of different fluid compositions. The transition may be detected or confirmed by an anomaly in the rotational response (e.g., a temporary dip) due to an emulsion between two or more fluid components. The non-Newtonian behavior of the emulsion makes its presence easily detectable in a rotor chamber. The disclosed principles may enable a rotor to act not only as a power source but as a water cut sensor.

Abstract: A magnet shield for use with a magnetic scale inhibitor includes a barrier configured for positioning at a location between the magnetic scale inhibitor and a flowbore for at least a first time period. The flowbore is configured for flow of a fluid. The barrier is: degradable in the fluid, such that, after the first time period, the barrier is no longer present at the location; and/or shiftable, such that, after the first time period, the barrier can be shifted away from the location. During the first time period, the barrier reduces or eliminates attraction of ferromagnetic particles to magnets of the magnetic scale inhibitor. A magnetic scale inhibitor tool comprising the magnet shield and a methods of utilizing the magnet shield and the magnetic scale inhibitor tool comprising the magnet shield are also provided herein.

Abstract: Provided is a float for use with a fluid flow control device, a fluid flow control device, a method for manufacturing a float, and a well system. The float, in one aspect, includes a fluid tight enclosure. The float, according to this aspect, further includes density specific material located within the fluid tight enclosure, the fluid tight enclosure and the density specific material creating a net density for the float that is between a first density of a desired fluid and a second density of an undesired fluid, such that the float may control fluid flow through a flow control device when encountering the desired fluid or the undesired fluid.

Abstract: Discharging a rechargeable battery in a wellbore may extend a lifetime of the rechargeable battery. A battery device positioned downhole in a wellbore may include a rechargeable battery for converting stored chemical energy into electrical power for powering a wellbore tool downhole. The battery device may also include a power source coupled to the rechargeable battery to charge the rechargeable battery. The battery device may include a controller that can discharge the rechargeable battery following a wellbore operation performed by the wellbore tool. The controller can monitor voltage levels of the rechargeable battery. The controller can further charge the battery cell prior to use of the wellbore tool if the voltage levels of the battery cell are below a discharged threshold.

Abstract: In some implementations, a clamshell packer for use in a wellbore proximate to a subsurface formation comprises an expandable non-elastomeric material and is configured to annularly envelop a non-compliant portion of a tubular in the wellbore, the non-compliant portion between one or more expandable screens.

Abstract: A variety of systems, methods and compositions are disclosed, including, in one method, a method for producing a subterranean formation, the method comprising: introducing a reactive material into a wellbore penetrating the subterranean formation; hydrolyzing the reactive material with an aqueous-based wellbore fluid to produce hydrogen gas; reducing a bulk density of the aqueous based wellbore fluid; producing the wellbore. A system for producing a wellbore, the system comprising: an oilfield tubular disposed in a producing wellbore; a fluid column comprising an aqueous based wellbore fluid within the oilfield tubular, wherein the fluid column comprises a hydrostatic head greater than a pore pressure of the wellbore; and a solid reactive material capable of chemically reacting with the aqueous-based wellbore fluid thereby reducing the hydrostatic head.

Abstract: A downhole flow control device is used to control the production of formation fluids while using flow of the formation fluids to drive a turbine. Flow through a turbine chamber is optimized using a chamber insert that cooperatively defines a reduced chamber volume with the turbine chamber. The chamber insert includes an overhead portion defining a ceiling over the turbine and an arcuate portion contiguous with an arcuate portion of the turbine chamber. The baffle is perforated to allow some flow to exit the reduced chamber volume to a bypass port in a cavity radially outwardly thereof. The turbine may be used for any suitable downhole application, such as an inflow control device or to generate electrical power.

Abstract: A downhole flow control device is used to control the production of formation fluids while using flow of the formation fluids to drive a turbine. Flow through a turbine chamber is optimized using a chamber insert that cooperatively defines a reduced chamber volume with the turbine chamber. The chamber insert includes an overhead portion defining a ceiling over the turbine and an arcuate portion contiguous with an arcuate portion of the turbine chamber. The baffle is perforated to allow some flow to exit the reduced chamber volume to a bypass port in a cavity radially outwardly thereof. The turbine may be used for any suitable downhole application, such as an inflow control device or to generate electrical power.

Abstract: Discharging a rechargeable battery in a wellbore may extend a lifetime of the rechargeable battery. A battery device positioned downhole in a wellbore may include a rechargeable battery for converting stored chemical energy into electrical power for powering a wellbore tool downhole. The battery device may also include a power source coupled to the rechargeable battery to charge the rechargeable battery. The battery device may include a controller that can discharge the rechargeable battery following a wellbore operation performed by the wellbore tool. The controller can monitor voltage levels of the rechargeable battery. The controller can further charge the battery cell prior to use of the wellbore tool if the voltage levels of the battery cell are below a discharged threshold.

Abstract: Provided is a float for use with a fluid flow control device, a fluid flow control device, a method for manufacturing a fluid flow control device, and a well system. The float, in one aspect, includes a ceramic base material having one or more cavities therein, the ceramic base material and the one or more cavities creating a net density for the float that is between a first density of a desired fluid and a second density of an undesired fluid, such that the float may control fluid flow through a flow control device when encountering the desired fluid or the undesired fluid.