Abstract: Systems, devices, and methods for evaluating an earth formation. Methods include conveying a tool on a carrier in a borehole, the tool comprising a conducting tubular having a transmitter and receivers disposed thereon in a spaced-apart relationship; inducing a current in the earth formation using the transmitter; measuring with the first receiver a first time-dependent transient electromagnetic (TEM) signal induced by the formation responsive to the current; measuring with a second receiver a second time-dependent TEM signal induced by the formation responsive to the current; and using at least one processor to estimate a corrected time-dependent TEM signal using the first time-dependent TEM signal, the second time-dependent TEM signal, and a correction coefficient estimated as a function of a non-exponentiated ratio of distances rb and rm between the transmitter and the respective receivers.

Abstract: A downhole flow meter includes a body including an inlet exposed to downhole fluids, an impeller rotatably supported in the body, the impeller including at least one vane, at least one magnet mounted to the at least one vane, and a switch responsive to the at least one magnet arranged in the body.

Abstract: A screen jacket termination configuration including a base pipe, a rib disposed at the base pipe, a wire wrapped about the base pipe and rib to form a screen jacket, and a termination strip wrapped about the base pipe and rib and disposed between wraps of the wire. A method for terminating a screen jacket includes disposing a termination strip between adjacent wraps of a screen jacket, the termination strip closing a space between the screen jacket and a base pipe at an end of the screen jacket such that any gap between the termination strip and the base pipe is less than a gauge of the screen jacket.

Abstract: A downhole setting tool and method of using the setting tool, the setting tool including a firing head, an igniter, a housing connected to the firing head, a power charge positioned within a chamber of the housing, and a connector connecting a portion of the power charge to the firing head. The connector may be connected to the uphole end of the power charge. The connector may connect the power charge to an adapter that connects the power charge to the firing head. The connector may be a ring having an outer engagement feature that engages the adapter and an inner engagement feature that engages the power charge. The connector may be a collet including an outer engagement feature that engages the adapter and a plurality of fingers that engage the power charge. The ignitor is used to detonate the power charge to set a device within a wellbore.

Abstract: A liner is cemented bottom up and then top down followed by setting the simultaneously set liner hanger/packer and releasing the running tool. In one embodiment the ported sub for top down cementing has ports opened and then closed with multiple dropped or pumped balls one of which lands in the running tool to set the hanger packer with pressure before running tool removal. A dart with a leading ball can follow the top down cement to close the ported sub and thereafter land in the liner hanger/packer to set it with pressure. A dart can lead the top down cement and open the ported sub followed by a second dart behind the top down cement to close the ported sub and land in the liner hanger/packer to set it and to release the running tool. The ported sub can be operated in other ways such as motors responsive to a remote signal.

Abstract: A method of extracting hydrocarbons from a subterranean formation comprises forming a suspension comprising reactive particles and a carrier fluid. The suspension is introduced into a subterranean formation containing a hydrocarbon material. At least a portion of the reactive particles are exothermically reacted with at least one other material within the subterranean formation to form a treated hydrocarbon material from the hydrocarbon material. The treated hydrocarbon material is extracted from the subterranean formation. An additional method of extracting hydrocarbons from a subterranean formation, and a method of treating a hydrocarbon material within a subterranean formation are also described.

Abstract: Systems, devices, and methods for estimating a value of a parameter of interest of an earth formation intersected by a borehole. Methods include conveying a carrier in the borehole having disposed thereon an acoustic imaging tool including at least one convex linear phased array module, each of the at least one module comprising a rigid shell forming a compartment containing a piezoelectric component array; using the acoustic imaging tool to take acoustic measurements of the borehole; and using the acoustic measurements to estimate at least one parameter of interest. Each module may be self-contained. The tool may include a plurality of modules circumferentially arrayed about a portion of the acoustic tool. Methods include individually removing one selected module from the acoustic tool. Methods may include selecting an outer tool diameter the same as an inner borehole diameter borehole and selecting a maximum number of modules fitting the outer tool diameter.

Abstract: A device for measuring a parameter of interest downhole, includes a downhole component configured to be disposed in a borehole formed in an earth formation, and at least one module configured to be removably connected to the downhole component. The at least one module at least partially encloses a sensor configured to measure the parameter of interest. The at least one module at least partially encloses a communication device for wireless communication.

Abstract: A device for steering a drilling assembly including a sleeve configured to be disposed around a length of a drive shaft configured to be disposed in a borehole in an earth formation. The drive shaft is configured to be rotated. The sleeve is configured to be rotationally decoupled from the drive shaft. Two or more modules are configured to be removably connected to the sleeve. Each of the two or more modules at least partially encloses a biasing element configured to be actuated to control a direction of the drilling assembly. Each of the two or more modules at least partially encloses a communication device for wireless communication.

Abstract: A system for determining bending of a drilling tool includes at least one element attached to the drilling tool and the at least one element includes a magnetic material, and at least one electrical conduit in the drilling tool and electro-magnetically coupled to the at least one element. The system also includes at least one signal source that feeds a signal into the electrical conduit and a measurement system that: measures at least one property of the signal in the electrical conduit as the signal source feeds the signal; and determines the bending of the drilling tool based on the measured property of the signal.

Abstract: Methods of monitoring conditions within a wellbore comprise providing a plurality of signal transmitters and a plurality of signal receivers within the wellbore. Marker materials configured with a particular characteristic may interact with signals generated by the plurality of signal transmitters are introduced into the wellbore. The marker materials interact with the signals, forming modified signals. The modified signals are received by the plurality of signal receivers. The plurality of receivers are configured to measure at least one of acoustic activity and an electromagnetic field to determine a location of the marker materials. The electrical conductivity and the magnetism of produced fluids may also be measured to determine a producing zone of the produced fluid. Downhole systems including the marker materials and also disclosed.

Abstract: A borehole plug or packer for treating is designed to be flowed back to a surface location after use. When the treatment is concluded pressure from above is relieved or lowered, and well fluid is flowed back, so that the plug or plugs disengages at slips designed to resist differential pressure from above. The application of differential pressure from below causes the lower slips to release one or more of such plugs in the hole into specialized sub surface or surface capture equipment so that well pressure is relieved before removal of the plugs from specialized subsurface or surface capture equipment. At least one apparatus is used to bridge transitions in wellbore dimension on the way to the surface and close the gaps to allow produced formation fluid to continue taking a packer or plug past the well diameter transition.

Abstract: A non-transitory computer-readable medium includes computer-executable instructions for presenting dumpflood data to a user by implementing steps on a computer. The steps include: receiving first data describing a first subsurface volume; receiving second data describing a second subsurface volume that is deeper than the first subsurface volume; calculating pressures required for a fluid to flow in a borehole from the first volume to the second volume as a function of vertical height of the first volume (h1), permeability of the first volume (k1), vertical height of the second volume (h2), permeability of the second volume (k2), a first damage factor (S1) representing damage to the first volume, and a second damage factor (S2) representing damage to the second volume; and displaying on a computer display a graphical representation of the calculated pressures and inputs used to calculate the pressures.

Abstract: A flow control system including a mandrel having one or more ports; one or more seals in sealing contact with the mandrel; a housing positioned about the mandrel and one or more seals and in sealing contact with the one or more seals. One or more diffusers placed in a fluid pathway of the flow control system. The one or more diffusers including an inner race having a bearing surface; an outer race having a bearing surface; an axially oriented wedge in contact with both the inner race and the outer race and configured to increase distance between the inner race bearing surface. The outer race bearing surface with wedge movement in one direction while permitting distance between the inner race bearing surface and the outer race bearing surface to decrease with wedge movement in an opposite direction.

Abstract: A method for introducing an organic drilling fluid additive into an aqueous drilling fluid in a subterranean formation, where the method includes introducing loaded microparticles into an aqueous drilling fluid. The loaded microparticles are made by absorbing at least one organic drilling fluid additive onto hybrid calcium carbonate microparticles to form loaded microparticles. The method further includes delivering the drilling fluid into a subterranean formation, and optionally shearing the loaded microparticles to release the absorbed drilling fluid additive(s) into the drilling fluid, such as by shearing them at the drill bit.

Abstract: A movable sleeve is actuated to cover eductor outlet ports in the event of loss of through flow. The eductor reduces pressure in the tool on one side of the sleeve as compared to hydrostatic on another side of the sleeve so that the sleeve is urged to move in an uphole or downhole direction to cover the eductor outlet ports. This movement reverses circulation direction through the housings in an effort to push debris off a clogged screen with reverse flow. To return the sleeve to its initial position the inlet to the device is inserted into debris and the surface pumps are started to create an unbalanced force on the sleeve to move it back to the original position free of the eductor outlet ports. The sleeve configuration can be reversed so that low pressure from a flow blockage urges the sleeve down to close the eductor ports.

Abstract: A composite used to slowly release well treatment agents and/or tracers into a well contains a calcined substrate comprising a metal oxide coated onto at least a portion of a core and a well treatment agent adsorbed onto or absorbed into the interstitial spaces of the metal oxide coating of the calcined substrate. The core contains a material sufficient in strength to prevent closure of a fracture created or enlarged within a subterranean formation penetrated by the well at in-situ reservoir conditions.

Abstract: Cutting elements for earth-boring tools may include a substrate and a polycrystalline, superabrasive material secured to an end of the substrate. The polycrystalline superabrasive material may include a first transition surface extending in a direction oblique to a central axis of the substrate, a second transition surface extending in a second direction oblique to the central axis, the second direction being different from the first direction, and a curved, stress-reduction feature located on the second transition surface.

Abstract: Devices and methods for detecting chemicals are disclosed. A device configured for use in a wellbore includes a sensor including a quantum tunneling composite (QTC) material configured to exhibit a change in electrical resistance responsive to the sensor contacting a target chemical. The sensor includes electrical resistance measuring circuitry operably coupled to the QTC material and configured to measure the electrical resistance of the QTC material and output a sensor signal indicating the electrical resistance. A method comprises deploying the sensor into the wellbore, measuring the electrical resistance of the QTC material, and determining the presence of the target chemical responsive to detecting changes in the electrical resistance of the QTC material. Another method includes selecting at least one of the QTC material and an active material to interact with a target wellbore chemical to change the electrical resistance of the QTC material.

Abstract: A permeability plugging apparatus disk including a body, and a slot through the body, the slot being non-straight. Also disclosed is method for producing a particulate plugging apparatus disk including estimating a feature to be replicated for particle plugging testing, depositing layer by layer of a material according to a program in an additive manufacturing tool, leaving selective voids in the layer by layer construction to form the disk having a non-straight slot in a body and a permeability plugging apparatus disk including a body defining a pulser screen.