Abstract: Provided are systems and methods for forming a casing liner in a wellbore of a hydrocarbon well. The forming including disposing a casing liner print head in an annular region located between a casing pipe disposed in a wellbore of a hydrocarbon well and a wall of the wellbore, conducting a downhole lining operation including operating the casing liner print head to eject casing liner integrated structure material into the annular region to form, in the annular region, a casing liner integrated structure including contiguous voids formed in the casing liner integrated structure material, and depositing a cementitious material into the contiguous voids formed in the casing liner material to form, in the annular region, a casing liner including the casing liner integrated structure material and the cementitious material.

Abstract: Provided are systems and methods for forming a casing liner in a wellbore of a hydrocarbon well. The forming including disposing a casing liner print head in an annular region located between a casing pipe disposed in a wellbore of a hydrocarbon well and a wall of the wellbore, and conducting a downhole lining operation including operating the casing liner print head to eject casing liner material into the annular region to form, in the annular region, a casing liner including elongated voids formed in the casing liner material.

Abstract: The methods of suspending at least one weighting agent in a drilling fluid include synthesizing carbon nanotubes via chemical vapor deposition on iron oxide catalyst nanoparticles to form a quantity of nanoparticles. Individual nanoparticles of the iron oxide catalyst nanoparticles include a transition metal disposed on iron oxide. The embodiments further include adding a quantity of nanoparticles to the drilling fluid which results in an amount of carbon nanotubes dispersed within the drilling fluid. The dispersion of the quantity of nanoparticles increases the value of at least one of a Newtonian viscosity, a yield point, a plastic viscosity, and a density of the drilling fluid with the dispersed nanoparticles versus a similar or equivalent drilling fluid without the nanoparticle dispersion. The method may further include adding at least one weighting agent which will become suspended in the drilling fluid.

Abstract: A nanosilica containing fluid system for shale stabilization in a shale formation. The nanosilica containing fluid system comprising a functionalized nanosilica composition operable to react with shale at the surface of the shale formation to form a barrier on the shale formation. The functionalized nanosilica composition comprising a nanosilica particle, the nanosilica particle having a mean diameter, and a functionalization compound, the functionalization compound appended to the surface of the nanosilica particle. And an aqueous-based fluid, the aqueous-based fluid operable to carry the functionalized nanosilica composition into the shale formation. The functionalization compound is an amino silane. The aqueous-based fluid is selected from the group consisting of water, deionized water, sea water, brine, and combinations thereof.

Abstract: The present disclosure relates to magnetically responsive drilling fluids and methods of using magnetically responsive drilling fluids. The magnetically responsive drilling fluids may include a drilling fluid and a plurality of superparamagnetic nanostructures disposed within the drilling fluid. The plurality of superparamagnetic nanostructures may include superparamagnetic-iron-oxide-nanoparticles (SPIONs) and carbon nanotubes (CNTs) adsorbed onto the SPIONs. The method of using the magnetically responsive drilling fluid may include introducing the magnetically responsive drilling fluid into a subsurface formation and applying a magnetic field to the magnetically responsive drilling fluid to elicit a rheological change in the magnetically responsive drilling fluid.

Abstract: Provided is a wellbore casing liner printing system that includes a casing liner print head adapted to be disposed in an annular region located between a casing pipe disposed in a wellbore of a hydrocarbon well and a wall of the wellbore and adapted to rotate within the annular region and deposit material into the annular region to form a casing liner in the annular region. The casing liner print head including a first set of printing nozzles arranged in series in a radial direction, and a second set of printing nozzles arranged in series in the radial direction and offset from the first set of printing nozzles. The first set of printing nozzles adapted to eject a first casing liner material into the annular region and the second set of printing nozzles adapted to eject a second casing liner material into the annular region to form the casing liner of the first casing liner material and the second casing liner material.

Abstract: Cured cements, cement slurries, and methods of making cured cement and methods of using cement slurries are provided. The cured cement comprises cement, carbon nanotube sponges disposed within the cement, and conductive fibers disposed within the cement, in which the conductive fibers interconnect the carbon nanotube sponges and form a conductive web within the cured cement.

Abstract: Cured cements, cement slurries, and methods of making cured cement and methods of using cement slurries are provided. The method of making a modified cement slurry includes adding particles comprising carbon nanotube sponges disposed on sacrificial templates to a cement slurry to form the modified cement slurry and allowing the sacrificial templates to disintegrate, thereby leaving the carbon nanotube sponges dispersed throughout the modified cement slurry.

Abstract: Provide is a cement ink for a cement ink for 3D printing (which also includes additive manufacturing) of 3D cement structures and materials. The cement ink includes an American Petroleum Institute (API) Class G cement, a nano-clay, a superplasticizer, a hydroxyethyl cellulose, and a defoamer. The nano-clay may be hydrophilic bentonite. The superplasticizer may be a polycarboxylate ether. The defoamer may be 2-ethyl-1-hexanol. Processes for forming the cement ink and printing 3D cement structures using the cement ink are also provided.

Abstract: Methods of determining the integrity of a well are provided. The methods include mixing conductive materials into a fluid, introducing the fluid into the well, and allowing the conductive materials to coat a surface of a subsurface formation, thereby forming an electrically conductive data conduit coating. The methods further include transmitting data through the electrically conductive data conduit coating to determine the integrity of the well.

Abstract: Cured cements, cement slurries, and methods of making cured cement and methods of using cement slurries are provided. The method of making a cured cement comprising: synthesizing nanomaterials via chemical vapor deposition on at least one of cement particles or cement additive particles to form nanomaterial particles, adding the nanomaterial particles to a cement slurry to form a modified cement slurry, and curing the modified cement slurry to form a cured cement, in which the nanomaterials are interconnected and form a conductive web within the cured cement.

Abstract: A nanosilica containing fluid system for shale stabilization in a shale formation. The nanosilica containing fluid system comprising a functionalized nanosilica composition operable to react with shale at the surface of the shale formation to form a barrier on the shale formation. The functionalized nanosilica composition comprising a nanosilica particle, the nanosilica particle having a mean diameter, and a functionalization compound, the functionalization compound appended to the surface of the nanosilica particle. And an aqueous-based fluid, the aqueous-based fluid operable to carry the functionalized nanosilica composition into the shale formation. The functionalization compound is an amino silane. The aqueous-based fluid is selected from the group consisting of water, deionized water, sea water, brine, and combinations thereof.

Abstract: The present disclosure relates to methods of suspending proppants in a hydraulic fracturing fluid including adding a quantity of precursor nanoparticles including carbon nanotubes supported by metal oxide catalyst nanoparticles to the hydraulic fracturing fluid. The metal oxide catalyst nanoparticles and the hydraulic fracturing fluid are selected such that the metal oxide catalyst nanoparticles are dissolvable in the hydraulic fracturing fluid. The metal oxide catalyst nanoparticles dissolve in the hydraulic fracturing fluid, resulting in an amount of carbon nanotubes dispersed within the hydraulic fracturing fluid. The carbon nanotube dispersion increases the value of at least one of a Newtonian viscosity, a yield point, a plastic viscosity, and a density of the hydraulic fracturing fluid with the dispersed carbon nanotubes versus a similar or equivalent hydraulic fracturing fluid without the carbon nanotube dispersion. The method may further include adding proppants to the hydraulic fracturing fluid.

Abstract: The present disclosure relates to methods of making nanocomposite coated proppants with a nanocomposite coating, including adding a quantity of precursor nanoparticles comprising carbon nanotubes supported by metal oxide catalyst nanoparticles to an uncured resin. The metal oxide catalyst nanoparticles and the uncured resin are selected such that the metal oxide catalyst nanoparticles are dissolvable in the uncured resin. The metal oxide catalyst nanoparticles are capable of dissolving in the uncured resin such that an amount of carbon nanotubes are dispersed within the uncured resin to form a nanocomposite coating. The method may further include coating proppant particles with the nanocomposite coating to make nanocomposite coated proppants.

Abstract: The present disclosure relates to methods of suspending at least one weighting agent in drilling fluids. The embodiments include adding a quantity of precursor nanoparticles including carbon nanotubes supported by metal oxide catalyst nanoparticles to the drilling fluid. The metal oxide catalyst nanoparticles and the drilling fluid are selected such that the metal oxide catalyst nanoparticles are dissolvable in the drilling fluid. The metal oxide catalyst nanoparticles dissolve in the drilling fluid, resulting in an amount of carbon nanotubes dispersed within the drilling fluid. The carbon nanotube dispersion increases the value of at least one of a Newtonian viscosity, a yield point, a plastic viscosity, and a density of the drilling fluid with the dispersed carbon nanotubes versus a similar or equivalent hydraulic fracturing fluid without the carbon nanotube dispersion. The method may further include adding at least one weighting agent which will become suspended in the drilling fluid.

Abstract: The present disclosure relates methods of suspending at least one weighting agent in a drilling fluid. The embodiments include synthesizing carbon nanotubes via chemical vapor deposition on iron oxide catalyst nanoparticles to form a quantity of nanoparticles. Individual nanoparticles of the iron oxide catalyst nanoparticles include a transition metal disposed on iron oxide. The embodiments further include adding a quantity of nanoparticles to the drilling fluid which results in an amount of carbon nanotubes dispersed within the drilling fluid. The dispersion of the quantity of nanoparticles increases the value of at least one of a Newtonian viscosity, a yield point, a plastic viscosity, and a density of the drilling fluid with the dispersed nanoparticles versus a similar or equivalent drilling fluid without the nanoparticle dispersion. The method may further include adding at least one weighting agent which will become suspended in the drilling fluid.

Abstract: A method of monitoring a substance in a well can include disposing at least one optical electromagnetic sensor and at least one electromagnetic transmitter in the well, and inducing strain in the sensor, the strain being indicative of an electromagnetic parameter of the substance in an annulus between a casing and a wellbore of the well. A system for monitoring a substance in a well can include at least one electromagnetic transmitter, and at least one optical electromagnetic sensor with an optical waveguide extending along a wellbore to a remote location, the sensor being positioned external to a casing in the wellbore.

Abstract: A well treatment composition for use in a hydrocarbon-bearing reservoir, optionally as a kill pill, and comprising a reversible aminal gel composition. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; a polar aprotic organic solvent; and a metal salt composition. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir.

Abstract: A well treatment composition for use in a hydrocarbon-bearing reservoir comprising a reversible aminal gel composition. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; a polar aprotic organic solvent; and a metal salt composition. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir.

Abstract: A nanosilica containing fluid system for shale stabilization in a shale formation. The nanosilica containing fluid system comprising a functionalized nanosilica composition operable to react with shale at the surface of the shale formation to form a barrier on the shale formation. The functionalized nanosilica composition comprising a nanosilica particle, the nanosilica particle having a mean diameter, and a functionalization compound, the functionalization compound appended to the surface of the nanosilica particle. And an aqueous-based fluid, the aqueous-based fluid operable to carry the functionalized nanosilica composition into the shale formation. The functionalization compound is an amino silane. The aqueous-based fluid is selected from the group consisting of water, deionized water, sea water, brine, and combinations thereof.