Abstract: A system for pulsed power drilling a wellbore into a subsurface formation comprises a drill bit that includes at least one electrode coupled to a power source, the at least one electrode to periodically emit an electrical discharge based on electrical pulses received from the power source. The system comprises a first port to output a first type of drilling fluid having a different composition than a second type of drilling fluid to flow downhole for removal of cuttings, wherein the electrical discharge is to be transmitted through the first type of drilling fluid and through a rock of the subsurface formation, wherein an additive or a property of at least one of the first type of drilling fluid or the second type of drilling fluid reduces mixability between the first type of drilling fluid and the second type of drilling fluid.

Abstract: A system for pulsed power drilling a wellbore into a subsurface formation comprises a drill bit that includes at least one electrode coupled to a power source, the at least one electrode to periodically emit an electrical discharge based on electrical pulses received from the power source. The system comprises a first port to output a first type of drilling fluid having a different composition than a second type of drilling fluid to flow downhole for removal of cuttings, wherein the electrical discharge is to be transmitted through the first type of drilling fluid and through a rock of the subsurface formation, wherein an additive or a property of at least one of the first type of drilling fluid or the second type of drilling fluid reduces mixability between the first type of drilling fluid and the second type of drilling fluid.

Abstract: An apparatus that is part of a drill string for drilling a wellbore in a subsurface formation, comprises a drill bit that includes at least one electrode coupled to a power source, the at least one electrode to periodically emit an electrical discharge based on electrical pulses received from the power source; and a first port to output a first type of drilling fluid having a dielectric that is different from a dielectric of a second type of drilling fluid to flow downhole for removal of cuttings, wherein the electrical discharge is to be transmitted through the first type of drilling fluid and through a rock of the subsurface formation.

Abstract: A screen assembly for wellbore production wherein a base pipe is wrapped with a screen constructed one or more cables formed from a plurality of non-metallic fibers bonded to one another with a metal binder. The non-metallic fibers may be basalt fibers or another ceramic material. The metal binder forms a metal matrix that has a first diameter about a primary cable axis, with the metal matrix securing the non-metallic fibers so that they have a second diameter about the primary cable axis, where the second diameter is larger than the first diameter, minimizing exposure of the metal matrix to wellbore fluids.

Abstract: An apparatus, that is part of a drill string for drilling a wellbore in a subsurface formation, comprises a drill bit that includes at least one electrode coupled to a power source, the at least one electrode to periodically emit an electrical discharge based on electrical pulses received from the power source; and a first port to output a first type of drilling fluid having a different composition than a second type of drilling fluid to flow downhole for removal of cuttings, wherein the electrical discharge is to be transmitted through the first type of drilling fluid and through a rock of the subsurface formation.

Abstract: An apparatus comprises an electrode assembly positioned at a bottom end of a pulse power drill string to be positioned in a borehole formed in a subsurface formation. The electrode assembly comprises multiple electrodes, wherein at least a subset of the multiple electrodes is to periodically emit a pulse of an electrical discharge into the subsurface formation to drill the borehole. The electrode assembly comprises a controller configured to alter a direction of drilling of the borehole based on selection of the subset from the multiple electrodes, wherein an effective attribute of at least one electrode of the multiple electrodes is different than the effective attribute of other electrodes of the multiple electrodes, wherein the effective attribute comprises at least one of a shape and a size.

Abstract: Systems, methods, and computer-readable media are provided for performing a well completion. Specifically, a distributed ledger associated with a supply chain for a well completion is accessed. The distributed ledger can include a first entry associated with a first entity in the supply chain that is indicative of an identification of the first entity and characteristics of a material implemented in the well completion. The ledger can also include a second entry associated with a second entity in the supply chain that is indicative of the second entity and the characteristics of the material at the second entity. Integration of the material in the well completion can be controlled based on the first entry and the second entry.

Abstract: A screen assembly for wellbore production wherein a base pipe is wrapped with a screen constructed one or more cables formed from a plurality of non-metallic fibers bonded to one another with a metal binder. The non-metallic fibers may be basalt fibers or another ceramic material. The metal binder forms a metal matrix that has a first diameter about a primary cable axis, with the metal matrix securing the non-metallic fibers so that they have a second diameter about the primary cable axis, where the second diameter is larger than the first diameter, minimizing exposure of the metal matrix to wellbore fluids.

Abstract: A screen assembly for wellbore production wherein a base pipe is wrapped with a screen constructed one or more cables formed from a plurality of non-metallic fibers bonded to one another with a metal binder. The non-metallic fibers may be basalt fibers or another ceramic material. The metal binder forms a metal matrix that has a first diameter about a primary cable axis, with the metal matrix securing the non-metallic fibers so that they have a second diameter about the primary cable axis, where the second diameter is larger than the first diameter, minimizing exposure of the metal matrix to wellbore fluids.

Abstract: A method comprises measuring pressures at a number of locations along a drill pipe of a drill string positioned in a wellbore, using a number of pressure sensors that are positioned on or within the drill pipe at different depths of the wellbore. The method includes determining a first pressure gradient between measured pressures measured by a first pair of pressure sensors of the number of pressure sensors and determining a second pressure gradient between measured pressures measured by a second pair of pressure sensors of the number of pressure sensors. The method includes determining a pressure gradient change based on a difference between the first pressure gradient and the second pressure gradient; and identifying that a downhole condition has occurred based, at least in part, on pressure gradient change.

Abstract: An apparatus comprises an electrode assembly positioned at a bottom end of a pulse power drill string to be positioned in a borehole formed in a subsurface formation. The electrode assembly comprises multiple electrodes, wherein at least a subset of the multiple electrodes is to periodically emit a pulse of an electrical discharge into the subsurface formation to drill the borehole. The electrode assembly comprises a controller configured to alter a direction of drilling of the borehole based on selection of the subset from the multiple electrodes, wherein an effective attribute of at least one electrode of the multiple electrodes is different than the effective attribute of other electrodes of the multiple electrodes, wherein the effective attribute comprises at least one of a shape and a size.

Abstract: A method is to perform pulse power drilling of a borehole into a subsurface formation. The method comprises altering drilling the borehole, based on the pulse power drilling, in a direction that is off-center from a center of the borehole, wherein the altering of the drilling of the borehole in the direction that is off-center comprises articulating at least one element of a drill string having a drill bit; and periodically emitting a pulse of electrical discharge into the subsurface formation from at least one electrode of an electrode assembly that is part of the drill bit.

Abstract: A screen assembly for wellbore production wherein a base pipe is wrapped with a screen constructed one or more cables formed from a plurality of non-metallic fibers bonded to one another with a metal binder. The non-metallic fibers may be basalt fibers or another ceramic material. The metal binder forms a metal matrix that has a first diameter about a primary cable axis, with the metal matrix securing the non-metallic fibers so that they have a second diameter about the primary cable axis, where the second diameter is larger than the first diameter, minimizing exposure of the metal matrix to wellbore fluids.

Abstract: A method comprises measuring pressures at a number of locations along a drill pipe of a drill string positioned in a wellbore, using a number of pressure sensors that are positioned on or within the drill pipe at different depths of the wellbore. The method includes determining a first pressure gradient between measured pressures measured by a first pair of pressure sensors of the number of pressure sensors and determining a second pressure gradient between measured pressures measured by a second pair of pressure sensors of the number of pressure sensors. The method includes determining a pressure gradient change based on a difference between the first pressure gradient and the second pressure gradient; and identifying that a downhole condition has occurred based, at least in part, on pressure gradient change.

Abstract: Methods, computer programs, and systems for detecting at least one downhole condition are disclosed. Pressures are measured at a plurality of locations along the drillstring. The drillstring includes a drillpipe. At least one of the pressures is measured along the drillpipe. At least one downhole condition is detected based, at least in part, on at least one measured pressure.

Abstract: A disclosed pulsed-power drilling system may include a controller that receives and analyzes feedback from downhole components reflecting changing conditions or performance measurements associated with a pulsed drilling operation to determine that an operating parameter of the drilling operation should be modified. The controller may output a control signal to cause an adjustment of a configurable downhole component, such as mechanical, electrical, or hydraulic component that affects the operating parameter, while the drill bit remains in the wellbore. The controller may adjust a segmented transformer of a pulse-generating circuit, changing the number of primary winding switches that are fired, or the timing of the firing of the switches, to modify characteristics of the generated pulses. Adjusting a downhole component may affect the drilling rate, the drilling direction, the flow of drilling fluid, a pulse rise time, a pulse repetition rate, or a rate of penetration for the drilling operation.

Abstract: A method of testing mechanical properties of an earth formation can include disposing a probe in a wellbore, impacting the probe against a wall of the wellbore, and measuring a parameter related to at least one of a displacement, displacement rate, strain, and strain rate, of at least one of the probe and the formation. Another method can include disposing a probe and a known material in a wellbore, and after the disposing, penetrating the known material with the probe. Another method can include disposing a probe in a wellbore, measuring a displacement of the probe into a wall of the wellbore while measuring a load applied to the probe, and applying fluid pressure to the formation via the probe.

Abstract: A method of testing mechanical properties of an earth formation can include disposing a probe in a wellbore, impacting the probe against a wall of the wellbore, and measuring a parameter related to at least one of a displacement, displacement rate, strain, and strain rate, of at least one of the probe and the formation. Another method can include disposing a probe and a known material in a wellbore, and after the disposing, penetrating the known material with the probe. Another method can include disposing a probe in a wellbore, measuring a displacement of the probe into a wall of the wellbore while measuring a load applied to the probe, and applying fluid pressure to the formation via the probe.

Abstract: A disclosed pulsed-power drilling system may include a controller that receives and analyzes feedback from downhole components reflecting changing conditions or performance measurements associated with a pulsed drilling operation to determine that an operating parameter of the drilling operation should be modified. The controller may output a control signal to cause an adjustment of a configurable downhole component, such as mechanical, electrical, or hydraulic component that affects the operating parameter, while the drill bit remains in the wellbore. The controller may adjust a segmented transformer of a pulse-generating circuit, changing the number of primary winding switches that are fired, or the timing of the firing of the switches, to modify characteristics of the generated pulses. Adjusting a downhole component may affect the drilling rate, the drilling direction, the flow of drilling fluid, a pulse rise time, a pulse repetition rate, or a rate of penetration for the drilling operation.

Abstract: A disclosed pulsed-power drilling system may include a controller that receives and analyzes feedback from downhole components reflecting changing conditions or performance measurements associated with a pulsed drilling operation to determine that an operating parameter of the drilling operation should be modified. The controller may output a control signal to cause an adjustment of a configurable downhole component, such as mechanical, electrical, or hydraulic component that affects the operating parameter, while the drill bit remains in the wellbore. The controller may adjust a segmented transformer of a pulse-generating circuit, changing the number of primary winding switches that are fired, or the timing of the firing of the switches, to modify characteristics of the generated pulses. Adjusting a downhole component may affect the drilling rate, the drilling direction, the flow of drilling fluid, a pulse rise time, a pulse repetition rate, or a rate of penetration for the drilling operation.