Abstract: Determining one or more of a fluid composition, a cement state, or a cement quality of a material located downhole a borehole by using a capacitive sensor or an inductive sensor. The sensors can be located on a pipe positioned downhole or within a swell packer. More than one sensor can be used, for example, as a set of sensor systems. The sensors can be of different sizes, utilize different frequencies, or be spaced unevenly to analyze different shaped areas and depths from the sensors. More than one set of sensors can be employed, such as axially or circumferentially spaced along the pipe or swell packer. The relative dielectric permittivity of the various downhole material can be used to determine when pumped cement has displaced the borehole fluid and when the cement has cured. The process can determine if a micro annulus or crack exists in the cement.

Abstract: A flow control valve configured to be positioned in a tubing in a borehole formed in a subsurface formation, wherein the flow control is used to regulate a flow of an injection fluid into the subsurface formation based on a vapor-transition characteristic of a fluid contained within a chamber of the flow control valve.

Abstract: A wireless flow control device includes a shiftable apparatus and a power source configured to provide power to shift the shiftable apparatus from a first position to a second position. The wireless flow control device also includes a valve that forms a first fluid flow path through the wireless flow control device while the shiftable apparatus is in the first position. The wireless flow control device further includes an actuation assembly, which, when actuated, forms a second fluid flow path through the wireless flow control device, and a turbine configured to recharge the power source.

Abstract: A swellable packer assembly that includes a mandrel, a sealing element disposed about a least a portion of the mandrel, and a degradable metal coating disposed about at least a portion of an outer surface of the sealing element. The degradable metal coating fluidly isolates the portion of an outer surface of the sealing element from an exterior of the coating and the sealing element is formed of a material responsive to exposure to a fluid in a wellbore to radially expand from the mandrel. The degradable metal coating is selectively removable from the mandrel downhole so as to expose the sealing element to the fluid in the wellbore.

Abstract: The disclosure provides a packing monitor, method, and gravel pack system for real-time monitoring of a particulate for improved gravel packing. Via the real-time monitoring, the quality of the gravel pack can be detected in real-time. Accordingly, a top-off procedure can be performed without additional tripping of the inner service tool string. Detecting when the gravel pack is approaching screen-out can also be determined in real-time. Detecting when screen-out is approaching allows the operator to prepare to stop pumping in case of miscalculations or early screen-out. In one example, the packing monitor includes: (1) a packing detector configured to, when stationary within the wellbore, obtain measurements indicating presence of a particulate in an annulus of the wellbore at different positions along a length of a screen; and (2) a packing controller configured to determine, based on the measurements, a status of the particulate in the annulus at the different positions.

Abstract: An acoustic actuator for scale removal and prevention in a wellbore is described herein. For example, a system can include a tubing string deployed downhole in a wellbore. A downhole tool can be coupled to the tubing string. An acoustic actuator can be coupled to the tubing string and positioned proximate to the downhole tool. The acoustic actuator can generate an acoustic signal that can vibrate the tubing string to generate a fluidic disturbance in downhole fluid within the tubing string for removing contaminants from, or preventing formation of contaminants, on the downhole tool.

Abstract: A method comprising transmitting, by an electric conductor disposed in a wellbore, a time-varying electric signal to a first reflector wirelessly coupled to the electric conductor and a sensor, wherein the sensor is wirelessly coupled to the electric conductor via the first reflector, receiving a first reflected signal from the first reflector, analyzing the first reflected signal to determine a sensor value for the sensor, and determining, based on the sensor value, one or more downhole parameters.

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: Method of manufacturing a wellbore downhole tool, including providing a pre-polymer resin and processing the pre-polymer resin. Processing the pre-polymer resin includes applying directed energy from a directed energy source such that the pre-polymer resin is at least partially polymerized to form a polymer seal of the wellbore downhole tool, the polymer seal having one of more mechanical properties that differ along one or more dimensions of the polymer seal. A downhole tool for use in a wellbore, the downhole tool including a polymer seal. The polymer seal is a continuous single monolithic piece, includes polymer structures having a polymer chain including same types of monomers that are bonded together, and the polymer structures are altered along one or more dimensions of the polymer seal and one of more mechanical properties of the polymer seal differ along a same corresponding one of the or more dimensions of the polymer seal.

Abstract: Methods and systems for controlling proppant concentration in a hydraulic fracturing slurry include measuring volumetric flow rates of fracturing fluid input to a blender and hydraulic fracturing slurry output from the blender, using these measured values to calculate a volumetric flow rate of proppant input, a slurry density and/or a slurry volume fraction, adjusting first and second valves to control rates of fluid and proppant delivery to the blender and re-measuring the volumetric flow rates and recalculating until target values of volumetric flow rate of proppant input, slurry density and/or slurry volume fraction are achieved.

Abstract: The disclosed embodiments include methods to monitor expansion of a metallic sealant deployed in a wellbore, methods to monitor downhole fluid displacement, and downhole metallic sealant measurement systems. The method to monitor expansion of a downhole metallic sealant includes deploying a metallic sealant deployed along a section of a wellbore. The method also includes exposing the metallic sealant to a reacting fluid to initiate a galvanic reaction. The method further includes measuring a change in temperature caused by the galvanic reaction. The method further includes determining an amount of expansion of the metallic sealant based on the change in the temperature.

Abstract: A float for use with a fluid flow control device. The float, in at least one aspect, includes a fluid impermeable exterior, and a base material having one or more cavities positioned within the fluid impermeable exterior, the base material formed using an additive manufacturing process.

Abstract: A system for a wellbore can include a tubing string positioned downhole in a wellbore and a porous gravel pack. The porous gravel pack can be positioned in an annulus defined at least in part by a surface of the tubing string. The porous gravel pack can be made up of a plurality of grains. Each grain can include a core surrounded at least in part by a sheath. The core can comprise an expandable material that can expand in response to coming in contact with a fluid. The sheath can surround the core and can be deformable in response to the core expanding in response being exposed to a fluid.

Abstract: Disclosed herein are aspects of an expandable metal wellbore anchor for use in a wellbore. The expandable metal wellbore anchor, in one aspect, includes one or more expandable members positionable on a downhole conveyance member in a wellbore, wherein the one or more expandable members comprise a metal configured to expand in response to hydrolysis, and wherein a combined volume of the one or more expandable members is sufficient to expand to anchor one or more downhole tools within the wellbore in response to the hydrolysis.

Abstract: Provided is a density sensor, a downhole tool, and a well system. The density sensor, in one aspect, includes one or more float chambers, and two or more floats located within the one or more float chambers. In one aspect, the two or more floats have a density ranging from 0.08 sg to 2.1 sg, and further a first of the two or more floats has a first known density (?1) and a second of the two or more floats has a second known density (?2) greater than the first known density (?1). The density sensor, according to this aspect, may further include one or more sensors located proximate the one or more float chambers, the one or more sensors configured to sense whether ones of the two or more floats sink or float within production fluid having an unknown density (?f).

Abstract: A controllable downhole scraper includes a fluid reservoir having a pressure wall positioned and movable within the fluid reservoir defining a first portion of the fluid reservoir including a first fluid. The pressure wall exerts a force on the first fluid to maintain a first pressure. A scraper blade is movable between a retracted and an extended position. A sleeve is positioned on a tubular and slidable between a first position engaging the scraper blade to move into the retracted position, and a second position engaging the scraper blade to move into the extended position. The sleeve is configured to move between the two positions through a reduction in the first pressure in the first fluid. A restrictor is fluidly coupled between the fluid reservoir and a pressure reservoir. A gas reservoir, fluidly coupled to the first fluid, is selectively operable to reduce the first pressure in the first fluid.

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: A controllable downhole scraper includes a fluid reservoir having a pressure wall positioned and movable within the fluid reservoir defining a first portion of the fluid reservoir including a first fluid. The pressure wall exerts a force on the first fluid to maintain a first pressure. A scraper blade is movable between a retracted and an extended position. A sleeve is positioned on a tubular and slidable between a first position engaging the scraper blade to move into the retracted position, and a second position engaging the scraper blade to move into the extended position. The sleeve is configured to move between the two positions through a reduction in the first pressure in the first fluid. A restrictor is fluidly coupled between the fluid reservoir and a pressure reservoir. A gas reservoir, fluidly coupled to the first fluid, is selectively operable to reduce the first pressure in the first fluid.

Abstract: A tubing string may include a swellable metal material for providing a seal downhole. The swellable metal material may react with a silica material and a water-based fluid to cause the swellable metal material to swell and form a seal within a flow path defined in part by the tubing string.

Abstract: Systems and methods for determining fluid density include receiving calibration data for a fluid density measurement tool. The fluid density measurement tool can include a cantilever beam and at least one strain sensor that is coupled to the cantilever beam. The cantilever beam can be housed in the fluid density measurement tool and is buoyed by a fluid that enters the fluid density measurement tool. The systems and methods measure strain values at the at least one strain sensor and determine a density of the fluid based on the calibration data, and the strain values measured at the at least one strain sensor.