Abstract: Tools, processes, and systems for in-situ fluid characterization based on a thermal response of a fluid are provided. The thermal response of a downhole fluid may be measured using a downhole thermal response tool and compared with thermal responses associated with known fluids. The properties of the downhole fluid, such as heat capacity, diffusivity, and thermal conductivity, may be determined by matching the thermal response of the downhole fluid with a thermal response of a known fluid and using the properties associated with the known fluid. The composition of the downhole fluid may be determined by matching the viscosity of the downhole fluid to the viscosity of known fluid. A downhole thermal response tool for cased wellbores or wellbore sections and a downhole thermal response tool for openhole wellbores or wellbore sections are provided.

Abstract: A downhole tool can be advanced downhole a wellbore. The downhole tool can include an electromagnetic source, a directional antenna, and a casing. The casing can either completely or partially consist of ceramic materials. The directional antenna can be oriented to direct electromagnetic radiation generated by the electromagnetic source towards the ceramic materials of the casing. In response to receiving the electromagnetic radiation, the ceramic materials can absorb the electromagnetic radiation, which can cause the ceramic materials to rapidly increase in temperature.

Abstract: An example plasma tool is configured to operate within a wellbore of a hydrocarbon-bearing rock formation. The plasma tool includes a laser head that includes one or more optical components. The laser head is configured to receive one or more laser beams at the one or more optical components and to output the one or more laser beams via the one or more optical components. The plasma tool includes a laser beam generator to generate the one or more laser beams. The laser beam is configured to induce a plasma in a volume of fluid. The plasma is for producing shock waves in the volume of fluid. The plasma tool includes a deformable acoustic mirror that confines the volume of fluid at least in part. The deformable acoustic mirror is configured to receive the shock waves to produce destructive reflected waves in the volume of fluid.

Abstract: Methods, apparatus and systems for in-situ heating fluids with electromagnetic radiation are provided. An example tool includes a housing operable to receive a fluid flowed through a flow line and a heater positioned within the housing. The heater includes a number of tubular members configured to receive portions of the fluid and an electromagnetic heating assembly positioned around the tubular members and configured to generate electromagnetic radiation transmitted to heat the tubular members. The heated tubular members can heat the portions of the fluid to break emulsion in the fluid. Upstream the heater, the tool can include a homogenizer operable to mix the fluid to obtain a homogenous fluid and a stabilizer operable to stabilize the fluid to obtain a linear flow. Downstream the heater, the tool can include a separator operable to separate lighter components from heavier components in the fluid after the emulsion breakage.

Abstract: In some aspects, a method includes imaging a casing, completed wellbore, or open wellbore. An integrity problem is with the casing, completed wellbore, or open wellbore is determined based on the imaging. A placement zone for a filler, a filler amount, and filler parameters for the integrity problem is determined. The filler in the filler amount is injected in the placement zone. The filler is solidified at the placement zone.

Abstract: An example system includes a laser tool configured for downhole movement. The laser tool includes an optical assembly configured to shape a laser beam for output. The laser beam may have an optical power of at least one kilowatt (1 kW). A housing contains the optical assembly. The housing is configured for movement to direct the output laser beam within a wellbore. The movement includes rotation of the laser tool around a longitudinal axis of the housing and tilting the housing relative to a longitudinal axis of the wellbore. A control system is configured to control at least one of the movement of the housing or an operation of the optical assembly to direct the output laser beam within the wellbore.

Abstract: A method of drilling a wellbore that traverses a formation, the method comprising the steps of inserting a one-stage drilling tool into the wellbore, the one-stage drilling tool comprising a laser head configured to produce a drilling beam, a completion sheath configured to line the wellbore, and a centralizer configured to support the completion sheath within the wellbore, operating the laser head to produce the drilling beam, wherein the drilling beam comprises a laser, wherein the drilling beam has a divergent shape comprising a base at a distance from a front end of the laser head and an apex proximate to the front end of the laser head, wherein a diameter of the base of the drilling beam is greater than a diameter of the one-stage drilling tool, and drilling the formation with the drilling beam, wherein the laser of the drilling beam is operable to sublimate the formation.

Abstract: An example laser tool includes a laser head to output a laser beam and a robotic arm that is articulated and that is connected to the laser head. The robotic arm includes segments that are connected by flexible joints to enable movement of the laser head in six degrees of freedom. A control system is configured to control the robotic arm to direct output of the laser beam.

Abstract: An example tool for fracturing a formation includes a body having an elongated shape and fracturing devices arranged along the body. Each fracturing device includes an antenna to transmit electromagnetic radiation and one or more pads that are movable to contact the formation. Each pad includes an enabler that heats in response to the electromagnetic radiation to cause fractures in the formation.

Abstract: An example tool for fracturing a formation includes a body having an elongated shape and fracturing devices arranged along the body. Each fracturing device includes an antenna to transmit electromagnetic radiation and one or more pads that are movable to contact the formation. Each pad includes an enabler that heats in response to the electromagnetic radiation to cause fractures in the formation.

Abstract: An example laser tool that operates within a wellbore is configured to combine a purging medium and a laser beam. The laser tool includes an integrator configured to receive the laser beam from a laser head and to combine the laser beam and the purging medium. A conduit is configured to generate a laminar flow from the purging medium and to produce an output that includes the laminar flow and the laser beam. The output is directed by the conduit towards a target within the wellbore. At least part of the laser tool is configured for rotation to cause the output to rotate during application of the output to the target.

Abstract: An example laser tool configured for downhole laser beam generation is operable within a wellbore. The laser tool includes a generator to generate a laser beam. The generator is configured to fit within the wellbore, to withstand at least some environmental conditions within the wellbore, and to generate the laser beam from within the wellbore. The laser beam has an optical power of at least one kilowatt (1 kW). A control system is configured to control movement of at least part of the laser tool to cause the laser beam to move within the wellbore.

Abstract: An example method includes stimulating a wellbore using a plasma tool configured to operate in the wellbore. The method includes introducing the plasma tool into the wellbore and generating one or more first laser beams. The method includes directing the one or more first laser beams to one or more first points outside of the downhole unit and inside a volume of fluid at least partially confined by an acoustic mirror. The one or more first laser beams may create a plasma bubble at a first point resulting in one or more shock waves in the volume of fluid. The method includes deforming the acoustic mirror to produce, from the one or more shock waves, one or more destructive reflected waves directed to one or more second points outside of the downhole unit.

Abstract: An example plasma tool is configured to operate within a wellbore of a hydrocarbon-bearing rock formation. The plasma tool includes a laser head that includes one or more optical components. The laser head is configured to receive one or more laser beams at the one or more optical components and to output the one or more laser beams via the one or more optical components. The plasma tool includes a laser beam generator to generate the one or more laser beams. The laser beam is configured to induce a plasma in a volume of fluid. The plasma is for producing shock waves in the volume of fluid. The plasma tool includes a deformable acoustic mirror that confines the volume of fluid at least in part. The deformable acoustic mirror is configured to receive the shock waves to produce destructive reflected waves in the volume of fluid.

Abstract: An example laser tool is configured to operate within a wellbore of a hydrocarbon-bearing rock formation. The tool includes one or more optical transmission media. The one or more optical transmission media are part of an optical path originating at a laser generator configured to generate a laser beam. The one or more optical transmission media are for passing the laser beam. The tool includes a mono-optic element that is part of the optical path. The mono-optic element is for receiving the laser beam from the one or more optical transmission media and for altering at least one of a geometry or a direction of the laser beam for output to the hydrocarbon-bearing rock formation. The tool also includes one or more sensors to monitor one or more conditions in the wellbore and to output signals based on the one or more conditions.

Abstract: In some aspects, a method includes imaging a casing, completed wellbore, or open wellbore. An integrity problem is with the casing, completed wellbore, or open wellbore is determined based on the imaging. A placement zone for a filler, a filler amount, and filler parameters for the integrity problem is determined. The filler in the filler amount is injected in the placement zone. The filler is solidified at the placement zone.

Abstract: An example system includes a generator to generate electromagnetic (EM) signals, and a rotational device having multiple sides. The rotational device includes an antenna to direct the EM signals to a formation to increase a temperature of the formation from a first temperature to a second temperature. The antenna is on a first side of the multiple sides. A purging system is configured to apply a cooling agent to the formation to cause the temperature of the formation to decrease from the second temperature to a third temperature thereby creating fractures in the formation. The purging system is on a second side of the multiple sides.

Abstract: The present application relates to compositions and methods for enhancing fracturing operation. In some embodiments, the present application includes compositions and methods that are used to minimize clustering of proppants or introduce proppants into narrow fractures. In some embodiments, the compositions and methods involve magnetic proppants.

Abstract: A method to control the shape of an opening in a formation including the steps of emitting a laser beam from a fiber optic cable into a direction unit, focusing the laser beam in the focusing lens to produce a focused laser, collimating the focused beam in the collimating lens to produce a directed beam, directing the directed beam onto a motorized master, where the compact scanner further comprises a motorized slave, wherein the motorized master comprises a master mirror and a master motor, wherein the motorized slave comprises a slave mirror and a slave motor, operating the motorized master and the motorized slave to produce a controlled beam, where the controlled beam moves in a movement pattern, introducing the controlled beam to a laser head, sublimating the formation to produce the opening, and vacuuming the dust and vapor with the vacuum nozzle.

Abstract: The present disclosure describes methods and systems for downhole well integrity reconstruction in a hydrocarbon reservoir. One method for downhole well integrity reconstruction in a hydrocarbon reservoir includes: positioning, a laser head at a first subterranean location, wherein the laser head is attached to a tubular inside of a wellbore; directing, by the laser head, a laser beam towards a leak on the wellbore; and sealing the leak using the laser beam.