Abstract: A method for improved borehole completion. In one embodiment, the method comprises removing a section of casing entirely and cutting a notch through the cement and into the surrounding rock formation, wherein the notch optimally comprise a symmetric triangle terminating in a sharp point oriented perpendicular to the casing axis. Flow may be further optimized by extending the notch as far as practical into the rock matrix to increase the effective diameter of the wellbore and increase the length of the intersection between the fracture and the wellbore.

Abstract: Fracturing subterranean formation to produce hydrocarbons requires fracturing fluids. These fluids contain proppant particles. A system and method for making and using ultralight weight proppant particles includes a composite of a precipitated polymer matrix and a plant-based material, wherein the precipitated polymer matrix includes a thermoplastic, and wherein the plant-based material includes microparticles.

Abstract: A method of subsurface sequestration of CO2 in a subsurface formation, the method including: producing formation water and hydrocarbons from a first well located within the first region while concurrently injecting an aqueous CO2 solution into a second well located within the second region, wherein the subsurface formation comprises a first region and a second region, the first region and the second region being fluidly connected, and the second region is at a greater depth than the first region and comprises at least one of the subsurface sequestration locations; and allowing the aqueous CO2 solution to sink as a negatively buoyant fluid below the formation water and the hydrocarbons, thereby sequestering the CO2 in the second region of the subsurface formation and wherein the aqueous CO2 solution has a greater density than the formation water and the hydrocarbons, making the aqueous CO2 solution negatively buoyant in the subsurface formation.

Abstract: Implementations relate to treatment of a petroleum reservoir to produce a hydrogen-bearing gas. Implementations may include methods and systems for processing a reservoir to generate hydrogen in-situ and produce a large fraction of the generated hydrogen to the surface. Processing the reservoir may include injecting oxygen into the reservoir to enable combustion within the reservoir to create heat and carbon monoxide in the reservoir. The heat may generate steam from both boiling of in-situ formation water and steam generated from the oxidation reactions. The generated heat may enable gasification, steam reforming, and aquathermolysis reactions and both the heat and carbon monoxide enables the water-gas shift reaction. Each such reaction may generate hydrogen within the reservoir.

Abstract: A composition for consolidating a carbonate-based formation includes a zinc metalloenzyme and calcium carbonate. A method for consolidating a carbonate-based formation to mechanically enhance the formation, includes injecting a fracture within the formation with the composition.

Abstract: A seal includes a seal body and a temperature controller in thermal communication with the seal material. A method for controlling temperature of a seal including applying an energy source to the temperature controller, and generating a temperature difference in the temperature controller. A borehole system including a borehole in a subsurface formation, a string in the borehole, and a seal tool disposed within or as part of the string.

Abstract: Hydrogen foams may be used for placing and maintaining hydrogen in a subterranean location. For example, methods for introducing hydrogen to a subterranean location may include: placing a hydrogen foam in a subterranean location, in which the hydrogen foam comprises a continuous phase generated from a foamable composition comprising an aqueous fluid and a discontinuous phase comprising at least hydrogen gas; and maintaining the hydrogen foam in the subterranean location.

Abstract: A system includes a control system disposed on a well surface and a pipe component disposed in a wellbore to form an annulus that is in fluid communication with a reservoir. The system includes a valve in fluid communication with the annulus. The system includes a recorder configured to detect data of the annulus. The system includes a fluid conduit configured to flow annular fluid from one or more annuli disposed in the wellbore. The fluid conduit is in fluid communication with the annulus, the valve, and a relief tank. The system includes a communication cable coupled to the control system, the valve, and the recorder. The recorder is configured to transmit the data to the control system.

Abstract: Fracturing or fracking fluids for fracturing a subterranean reservoir for hydrocarbon recovery and related methods are described. The fluid comprises lignin, in particular technical lignin, and at least one strain of bacteria capable of biosurfactant production and/or a biosurfactant produced by at least one such isolated strain of bacteria. Also described is a fracturing method for recovering hydrocarbons from a subterranean formation.

Abstract: Fracturing fluids for treating subterranean formations. An example fracturing fluid includes an anti-syneresis agent, a water-soluble terpolymer, a terpolymer hydration aid, an antioxidizing agent, a metal crosslinking agent, a breaker, and an aqueous base fluid. The fracturing fluid is introduced into a wellbore penetrating the subterranean formation at a pressure sufficient to fracture the subterranean formation and the subterranean formation is fractured with the fracturing fluid.

Abstract: A method of producing a cementitious material includes combining a reaction mixture to form a slurry and curing the slurry to form the cementitious material. The reaction mixture may include a mineral mixture, an organic compound, and CO2. The mineral mixture may include calcium and the organic compound may be 3,4-dihydroxyphenethylamine, methyl salicylate, or both.

Abstract: The subject invention provides microbe-based products, as well as their use to improve oil production and refining efficiency by, for example, remediating the disposable layers in oil tanks and other oil storage units. In preferred embodiments, the microbe-based products comprise biochemical-producing yeast and growth by-products thereof, such as, e.g., biosurfactants. The subject invention can be used to remediate rag layer and/or other dissolved solid layers that form in water-oil emulsions. Furthermore, the subject invention can be used for remediating solid impurities, such as sand, scale, rust and clay, in produced water, flow-back, brine, and/or fracking fluids.

Abstract: A distributed acoustic system (DAS) may include at least one laser that transmits a continuous wave (CW) light, a pulser optically connected to the at least one laser to receive the CW light from the at least one laser and form a light pulse, and a splitter optically connected to the pulser to optically split the light pulse into a plurality of light pulses. The DAS may further comprise a circulator optically connected to an output of the splitter, a sensor fiber attached to the circulator, and a reference coil disposed on the sensor fiber between the circulator and a first section. A method for using the DAS may include transmitting one or more light pulses from a laser into the DAS, generating an interrogator specific noise profile for the reference wellbore, and generating an application specific noise profile for a first sensor fiber disposed in the reference wellbore.

Abstract: A method of removing oxygen from a drilling fluid includes pumping the drilling fluid into a first inlet of a mixer, such that the drilling fluid is flowing in a first direction. Further the method includes pumping a gas including nitrogen into a second inlet of the mixer to mix the gas with the drilling fluid, the second inlet being downstream of the drilling fluid. The method includes flowing the gas in an opposite direction from the first direction, thereby permitting mass transfer of the oxygen from the drilling fluid to the gas to produce a deoxygenated drilling fluid; and discharging the deoxygenated drilling fluid from an outlet of the mixer.

Abstract: A method of deploying a pump in a well production tubing using an electrical cable includes attaching a downhole barrier valve (DBV) to a spoolable conveyance. The DBV is closed to flow in both directions until a differential pressure across the DBV exceeds a first threshold. The DBV is closed to flow when the differential pressure falls below the first threshold. The DBV is moved to a selected depth in the well by extending the conveyance through a lubricator attached to a wellhead at an upper end of the production tubing. The spoolable conveyance is withdrawn from the well. The pump is attached to the electrical cable and is moved through the wellhead and the production tubing by extending the cable until the pump reaches a selected setting depth in the well.

Abstract: Nano- and micro-particles (NMP) can be formed from an oil/water emulsion. The emulsion is made by mixing a liquid solvent, at least one surfactant, a particle-forming compound, and at least curing agent. If desired, pH control agents and viscosity enhancers can be added to the liquid solvent. The particle-forming compound and the curing agents are mixed together and form the oil phase in the emulsion and after curing, the particles are formed. The nano- and micro-particles can be used as proppant to enhance the conductivity of nano- and microfractures and fluid-loss-control additive for hydraulic fracturing operations.

Abstract: A method of perforating a well that includes suspending a first perforating gun and a second perforating gun on a conveyance into a well, transmitting a signal down the conveyance, where the signal at least partially traverses the first perforating gun, a perforating gun connection, and the second perforating gun, and in response to the signal selecting the second perforating gun to fire, and firing a shaped charge in the second perforating gun, where the first perforating gun and the second perforating gun are connected via the perforating gun connection, where the perforating gun connection includes a pin which extends from the first perforating gun to a contact tab of the second perforating gun, and where a spring element, coupled with the contact tab, elastically deforms in response to the contact tab engaging with the pin.

Abstract: A high-thermal conductivity slurry composition is contemplated that includes a slurry mixture comprising a high-thermal k material, water, and an optional dispersant. Preferably, the high thermal k material is in the form of a plurality of particles having a wide size distribution that spans across at least 2 log units and is present in an amount effective such that the slurry composition has, upon compaction or settling of the slurry mixture at a target location, a thermal conductivity of at least 3 W/m° K.

Abstract: Injection into a subterranean formation is optimized using a computation model to optimize injection. An optimization objective is to maximize the cumulative fluid mass rates injection that span over the remaining life of the field, while maintaining a dense or supercritical phase and operating within the equipment operational parameters. The phase at each location may be determined based on pressure and temperature, and flow is dynamically adjusted to maintain a phase having at least a threshold density of the carbon dioxide injected at each injection location.

Abstract: A device for cleaning a tubular of a wellbore includes a cylindrical body. The cylindrical body has a fishing neck, an upper chamber, a lower chamber, a first spring, a second spring, and a rod. The fishing neck facilitates raising and lowering the device within the tubular. The upper chamber receives a latching dog that abuts against the tubular when the device is raised and lowered within the tubular. The lower chamber receives a brush with bristles that scour a surface of the tubular as the device is lowered. The first spring exerts a force between the latching dog and the cylindrical body, while the second spring exerts a force between the brush and the cylindrical body. Finally, the rod interconnects the latching dog and the brush such that the rod forces the brush to withdraw into the cylindrical body when the latching dog actuates away from the cylindrical body.