Abstract: A well system includes a well extending from a surface into a formation, a Y-tool provided at an end of a tubing string extending through the well, a concentric coiled tubing string extending through the tubing string and through a bypass line of the Y-tool, and a plurality of treatment solutions provided at the surface of the well. The plurality of treatment solutions includes at least one component of a dissolvable gel, a gel dissolving solution, and at least one component of a non-dissolvable gel. A method for plugging a water zone in a hydrocarbon bearing formation and a method for reducing a concentration of produced water from a hydrocarbon bearing formation are also described.

Abstract: Carbonates, such as chalk and limestone, are rather soft minerals and may lose at least some mechanical integrity after undergoing stimulation. For instance, carbonate minerals may experience proppant embedment or asperity weakening after fracturing or matrix acidizing. Methods for hardening a carbonate mineral may comprise: introducing an aqueous carrier fluid comprising an ammonium phosphate salt into a subterranean formation comprising a carbonate mineral, and interacting the carbonate mineral with the ammonium phosphate salt to convert at least a portion of the carbonate mineral into a hydroxyapatite mineral. The subterranean formation may exhibit an increased hardness after forming the hydroxyapatite mineral. The ammonium phosphate salt may be diammonium hydrogen phosphate in some examples.

Abstract: A process for predicting and addressing retrograde liquid condensate dropout (LDO) in a hydrocarbon subsurface formation may include determining a maximum retrograde condensate liquid dropout (LDOmax) for the subsurface formation; generating a normalized model of retrograde condensate liquid dropout versus subsurface formation pressure according to an equation with formula: L ? DO nrm = L ? DO max * ( e ( - 1 * f Bell * ( P nrm - P nrmPeak ) 2 ) ) ( 1 ? 0 - 7 * Z C ? 7 + * e f H ? u ? b ? b * P n ? r ? m ) + 1 ; inputting a normalized pressure (Pnrm) into the model based on the pressure of the subsurface formation; and de-normalizing the LDOnrm according to the formula: LDO=LDOnrm*LDOmax, thereby generating a predicted condensate liquid dropout within the subsurface formation.

Abstract: A method of calibrating gas lift injection for a gas lift well includes incrementally adjusting an operational position of a gas lift choke arranged within a gas lift injection line, the gas lift injection line being in fluid communication with an annulus defined between production tubing and an inner wall of a wellbore, and the gas lift choke being operable to control a flowrate of a lift gas injected into the annulus, monitoring changes in a real-time downhole pressure within the gas lift well as the operational position of the gas lift choke is adjusted, determining an optimized operational position of the gas lift choke based on a lowest downhole pressure and a corresponding operational position of the gas lift choke when the lowest downhole pressure is observed, and adjusting the operational position of the gas lift choke to the optimized operational position.

Abstract: The present disclosure relates to pipeline corrosion inhibitor optimization and control. In an example, a failure probability representative of a likelihood of a pipeline corrosion failure and a consequence level representative of a consequence from the pipeline corrosion failure can be computed. A risk matrix can be generated and used to identify an inhibitor concentration based on the failure probability and consequence. A dosage of a corrosion inhibitor for mitigating corrosion of a pipeline can be computed based on the inhibitor concentration. In some examples, the dosage of the corrosion inhibitor can be adjusted based on a modification factor computed at least based on a corrosion rate measured for the pipeline.

Abstract: A system for separating drill cuttings from a drilling fluid and transporting the drill cuttings from a wellbore includes a multi-chambered collection bin defining a first chamber and a second chamber therein separated by a screen partition. An unloading bulk conveyor is operably coupled to the first chamber for unloading drill cuttings from the first chamber and a suction pump is operably coupled to the second chamber for drawing drilling fluid from the second chamber. Drill cuttings may be unloaded from the first chamber onto a transport vehicle for delivery to a disposal site. The drilling fluid may be pumped from the second chamber and recirculated through the wellbore.

Abstract: Provided is a crosslinking agent that has a core particle and a shell on the surface of the core particle. The shell has at least one polymacrolactone. Also provided is a polymeric composite including a polyolefin matrix having at least one polyolefin and the crosslinking agent. The polyolefin is functionalized to include functional groups. Further, a method of preparing the polymeric composite composition and an article are provided.

Abstract: A system and method for continuously treating blowdown water derived from one or more boilers using a microwave reactor, a cooling system, and an ion exchange filter to remove insoluble solids, organic matter, bacteria, and other impurities. The recovered water is stored, treated with a corrosion inhibitor, an oxidizing biocide, a non-oxidizing biocide, and a scale inhibitor, before being recycled for reuse in the boiler system.

Abstract: Methods and systems for producing hydrogen substantially without greenhouse gas emissions, one method including producing a product gas comprising hydrogen and carbon dioxide from a hydrocarbon fuel source; separating hydrogen from the product gas to create a hydrogen product stream and a byproduct stream; injecting the byproduct stream into a reservoir containing mafic rock; and allowing components of the byproduct stream to react in situ with components of the mafic rock to precipitate and store components of the byproduct stream in the reservoir.

Abstract: A composition including a fluorescent polymer tag and an aqueous-based drilling fluid is provided. Also provided is a method of determining drill depth of recovered drill cuttings. The method includes introducing a fluorescent polymer tag into a drilling fluid, the fluorescent polymer tag includes the composition having the fluorescent compound linked to the polymer. The method then includes circulating the drilling fluid through a well during a drilling operation that creates formation cuttings such that the fluorescent polymer interacts with the formation cuttings, creating tagged cuttings. The returned cuttings are collected from the circulating drilling fluid at a surface of the well. The method then includes detecting the presence of the fluorescent polymer tag on the returned cuttings to identify the tagged cuttings, and correlating the tagged cuttings with the drill depth in the well at a time during the drilling operation.

Abstract: Cutters for a downhole drill bit can be formed by providing a catalyst-free synthesized polycrystalline diamond (PCD) having a cross-sectional dimension of at least 8 millimeters; providing a substrate comprising tungsten carbide; and attaching the synthesized PCD to the substrate comprising tungsten carbide to form a PDC cutter.

Abstract: An apparatus for detecting and determining geometric features inside a borehole comprises a body section coupled to and deployable in the borehole by a conveyor, a head section having a first end pivotably coupled to the body section via a joint and a second end having an array of ultrasonic transducers. The array of transducers comprises, for example, a multiplicity of individual actuator elements and a multiplicity of individual sensor elements. An electronic control unit controls the timing of emission of ultrasonic radiation from the actuator elements of the array, receives signals generated by the sensor elements of the array, and controls movement of the head section via an actuator coupled to the joint. A method for reconstructing a geometry and detecting and identifying features in a borehole is also provided.

Abstract: A treatment fluid and method for water shut-off applications containing an amine-functionalized solid support, an epoxy resin, a second curing agent, and a carrier fluid. Prior to use of the treatment fluid, the amine-functionalized solid support has reacted with carbon dioxide to produce a carbamate-functionalized solid support. The treatment fluid is introduced into a geological formation with high-permeability pathways, curing the epoxy resin, and sealing these pathways.

Abstract: A system includes an electric submersible pump (ESP) assembly configured to transport a fluid in a casing string of a well to a surface location. The ESP includes a pump configured to receive, upon activation, the fluid through a pump intake and vent the fluid through a pump discharge; an output shaft extending downhole from and fixed to the pump; and a control valve assembly. The control valve assembly includes a movable core of an electromagnet movable along a central axis of the system; a generator in electrical communication with the electromagnet, configured to generate electrical power to pull the movable core in an uphole direction upon activation of the pump of the electric submersible pump assembly; a shaft coupler coupling a generator input shaft and the output shaft; and a stinger having a conduit for the fluid to flow from the tubing string to the pump intake.

Abstract: Systems and methods for evaluating hydrocarbon properties. At least one of the systems includes: a drilling machine configured to drill a borehole; a plurality of infrared cameras configured to capture infrared image data representing a plurality of infrared images of at least one core sample extracted from the borehole; a computer-readable memory comprising computer-executable instructions; and at least one processor configured to execute the computer-executable instructions, in which when the at least one processor is executing the computer-executable instructions, the at least one processor is configured to carry out operations including: receiving the infrared image data captured by the plurality of infrared cameras; determining, based on the infrared image data, at least one hydrocarbon weight value of the at least one core sample.

Abstract: A system includes a pressure relief valve connected between an upstream segment of pipe and a downstream segment of pipe, an inlet isolation valve located in the upstream segment of pipe, an outlet isolation valve located in the downstream segment of pipe, and a tubing having a first tubing isolation valve, a first end connected to the upstream segment of pipe between the inlet isolation valve and the pressure relief valve, and a second end connected to the downstream segment of pipe between the pressure relief valve and the outlet isolation valve. Depressurizing the system includes closing the inlet isolation valve, depressurizing the upstream segment of pipe by opening the first tubing isolation valve, monitoring a pressure in the tubing with a gauge connected to the tubing, and closing the outlet isolation valve when the pressure in the tubing is below a predetermined pressure.

Abstract: A blanking plug for isolating the wellbore of a fluid-producing well during operation of an electric submersible pump is provided with a sand trap positioned at the upper end of the plug. The sand trap is in the form of a flapper valve mechanism and includes a particulate accumulation chamber.

Abstract: A subsurface safety valve includes an interior bore and a hinged valve actuatable between an open position and a closed position in which the hinged valve creates a fluid-tight seal with the interior bore. A latching mechanism secures an isolation tool within the interior bore of the valve. The isolation tool includes a tubular body having an exterior surface corresponding to the interior bore and an interior surface defining an internal bore. An annular groove is disposed on the exterior surface of the tubular body, and an annular seal is disposed in the annular groove. An equalization port is disposed downhole of the annular seal, and has one or more apertures for fluidly coupling an upper and lower portion of a wellbore. The subsurface safety valve further includes a control line for controlling the valve at a surface of the wellbore.

Abstract: A method includes developing a lab-scale representative correlation between wettability index and tracer test return curve data for core samples, obtaining tracer test return curve data for rock at a well of interest, and determining a wettability index of the rock in situ using the representative correlation and the tracer test return curve data for the well. A method includes obtaining core samples of a rock representative of a formation of interest, determining a wettability index of each of the core samples, performing a tracer test on each of the core samples and obtaining tracer return curve data for each of the core samples, building a correlation between the wettability index and the tracer return curve data of the core samples, running a single-well tracer test at a well, obtaining tracer return curve data for the well, and determining a wettability index for the rock of the well.

Abstract: Systems and methods include a computer-implemented method: Historical and forecasted field life data for existing gas wells is received, including pressure and temperature data at different depths of the existing gas wells over the life of the existing gas wells. Using the historical and forecasted field life data for the existing gas wells, a sub-erosion production rates model is generated for in situ estimation of sub-erosion for gas wells. Well parameters for a subject gas well are received. Using the well parameters of the subject gas well, the sub-erosion production rates model is executed to identify high-erosion risk spots in the subject gas well, including using iteratively evaluating results using three different methods. Outputs of the sub-erosion production rates model are provided for presentation to a user in a graphical user interface (GUI).