Abstract: A system for wirelessly monitoring well conditions includes a set of wireless transceivers placed along a drill string inside a well, each transceiver placed within at least half the maximum distance that each transceiver can transmit data, and a power generator attached to each transceiver that powers the respective transceiver, the power generator including a first material that is of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on the motion of the power generator so that the two materials have a maximized point of contact to generate maximum power. The wireless transceivers may communicate using any wireless communication technology, including but not limited to Wi-Fi, Wi-Fi Direct, and BLE.

Abstract: Mitigating drilling circulation loss can be implemented as a wellbore drilling system that includes a drilling liner and a drill head assembly. The drilling liner is configured to be positioned in a lost circulation zone of a subterranean formation in which a wellbore is being drilled. The drilling liner is configured to flow wellbore drilling fluids from a surface of the wellbore to the subterranean formation while avoiding the lost circulation zone. The drill head assembly is attached to a downhole end of the drilling liner, and is configured to drill the subterranean formation to form cuttings, receive the wellbore drilling fluids, and flow the cuttings and the wellbore drilling fluids into the drilling liner while avoiding the lost circulation zone and towards the surface of the wellbore.

Abstract: One example of a downhole self-isolating wellbore drilling system to pulverize formation cuttings includes a cutting grinder tool and an isolation tool. The cutting grinder tool can be attached to a drill string uphole relative to a drill bit attached to a downhole end of the drill string. The cutting grinder tool can receive and pulverize formation cuttings resulting from drilling a formation using the drill bit. The isolation tool can be attached to the drill string uphole relative to the cutting grinder tool. The isolation tool can control flow of the pulverized formation cuttings mixed with a drilling mud uphole through the drill string.

Abstract: A system for wirelessly monitoring well conditions includes a set of wireless transceivers placed along a drill string inside a well, each transceiver placed within at least half the maximum distance that each transceiver can transmit data, and a power generator attached to each transceiver that powers the respective transceiver, the power generator including a first material that is of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on the motion of the power generator so that the two materials have a maximized point of contact to generate maximum power. The wireless transceivers may communicate using any wireless communication technology, including but not limited to Wi-Fi, Wi-Fi Direct, and BLE.

Abstract: A method and system for remediating a lost circulation zone in a wellbore. A flexible liner is deployed adjacent the lost circulation zone that blocks fluid communication between the wellbore and surrounding formation. The liner material has a designated yield and tensile strength, so that in response to pressure applied in the wellbore the liner flexes and conforms to contours in the wellbore. The liner remains intact during deformation to maintain the flow barrier between the wellbore and formation. The liner is set in the wellbore with a bottom hole assembly that includes an outer housing for protecting the liner during the trip downhole. Drill pipe can be used for deploying the bottom hole assembly, and for conveying pressurized fluid for setting the liner. An expander is included with the bottom hole assembly for mechanically conforming the liner to the wellbore sidewalls.

Abstract: High temperature miniature mobile device includes a power generator including a first material of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled towards or slid against the second material based on motion of the miniature mobile device so that the two materials have a maximized point of contact to generate maximum power, an electrode that is connected to the first material or second material, a bridge rectifier connected to the electrode to transform the power generated into direct current from alternating current, a storage unit for storing the power generated by the power generator, a sensor that gathers information concerning a downhole environment, and a microcontroller and transceiver unit to manage the power generated by the power generator and transmit information gathered by the sensor.

Abstract: A high temperature downhole power generating device includes a power generator including a first material of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on motion of the high temperature downhole power generating device so that the two materials have a maximized point of contact to generate maximum power, at least one electrode that is connected to the first material or second material, a bridge rectifier connected to the at least one electrode to transform the power generated into direct current from alternating current, a storage unit for storing the power generated by the power generator, a sensor that gathers information concerning a downhole environment, and a microcontroller and transceiver unit to manage the power generated by the power generator and transmit information gathered by the sensor.

Abstract: A system for wirelessly monitoring well conditions includes a set of wireless transceivers placed along a drill string inside a well, each transceiver placed within at least half the maximum distance that each transceiver can transmit data, and a power generator attached to each transceiver that powers the respective transceiver, the power generator including a first material that is of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on the motion of the power generator so that the two materials have a maximized point of contact to generate maximum power. The wireless transceivers may communicate using any wireless communication technology, including but not limited to Wi-Fi, Wi-Fi Direct, and BLE.

Abstract: A system for wirelessly monitoring well conditions includes a set of wireless transceivers placed along a drill string inside a well, each transceiver placed within at least half the maximum distance that each transceiver can transmit data, and a power generator attached to each transceiver that powers the respective transceiver, the power generator including a first material that is of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on the motion of the power generator so that the two materials have a maximized point of contact to generate maximum power. The wireless transceivers may communicate using any wireless communication technology, including but not limited to Wi-Fi, Wi-Fi Direct, and BLE.

Abstract: A system for wirelessly monitoring well conditions includes a set of wireless transceivers placed along a drill string inside a well, each transceiver placed within at least half the maximum distance that each transceiver can transmit data, and a power generator attached to each transceiver that powers the respective transceiver, the power generator including a first material that is of one polarity and a second material that is fixed in position and is of opposite polarity of the first material, wherein the first material is propelled toward the second material based on the motion of the power generator so that the two materials have a maximized point of contact to generate maximum power. The wireless transceivers may communicate using any wireless communication technology, including but not limited to Wi-Fi, Wi-Fi Direct, and BLE.

Abstract: A well test assembly sized for use in a slim-hole of a subterranean well includes an inner moveable sleeve having an inner circulation port and an inner fluid passage port. An outer housing has a first outer circulation port, an outer fluid passage port, and a second outer circulation port. A middle sleeve has: a middle circulation port aligned with the inner circulation port and the first outer circulation port when the assembly is in a lowering position; a middle fluid passage aligned with the inner fluid passage port and the outer fluid passage port when the assembly is in a collection position; and a fluid injection port aligned with the second outer circulation port when the assembly is in a retrieval position. A packer assembly seals an annulus between the middle sleeve and an inner diameter of the slim-hole when the assembly is in a setting position.

Abstract: A drilling bottom hole assembly for loss circulation mitigation includes a drill bit configured to drill a wellbore in a formation. The drill bit is attached to a drill string. The wellbore includes a high-loss circulation zone into which drilling fluid is lost during drilling the wellbore. An under reamer is attached to the drill string upstring of the drill bit. The under reamer is downhole of the high-loss circulation zone. The under reamer, in response to actuation, is configured to widen a diameter of the high-loss circulation zone. An expansion assembly is connected to the under reamer. The expansion assembly surrounds the drill string upstring of the under reamer. The expansion assembly is configured to cover the high-loss circulation zone after the diameter of the high-loss circulation zone is widened by the under reamer.

Abstract: A well tool for use in completing a wellbore includes a tubular housing having a central bore and a housing port through a wall of the tubular housing, an inner mandrel disposed within the tubular housing and selectively movable between a first, closed position and a second, open position in response to a fluid pressure in the central bore, a sealing element circumscribing a portion of the tubular housing, and a setting sleeve. The inner mandrel is configured to open the housing port when the inner mandrel is in the second, open position. The setting sleeve is movable between a first, retracted position and a second, expanded position, where the setting sleeve is configured to activate the sealing element in the second, expanded position in response to movement of the inner mandrel to the second, open position.

Abstract: A system for cementing a tubular in a wellbore that includes a sleeve made up of an annular housing with a cement seal on outer surface of the housing. The sleeve further includes a sliding block, a stationary block, an arm attached to the sliding block, and a passage formed through a sidewall of the housing, and that receives a free end of the arm. When the sleeve inner bore is pressurized, the arm moves to move the sliding block into an open space in the stationary block. Inserting the sliding block into the open space forms a seal on the outer periphery of the sleeve which forms a barrier to cement flowing in an annulus between the sleeve and inner surface of the wellbore. Lost circulation material can be deposited in the annulus and which settles along an interface between the seal and wellbore wall.

Abstract: A lateral wellbore is formed from a high side of a horizontal portion of a primary wellbore with a drill bit assembly that has a selectively extendable pilot bit. The drill bit assembly is mounted on a lower end of a drill string. A bit guide is disposed adjacent the drill bit assembly for urging the drill bit assembly in a lateral direction against the high side of the primary wellbore. Rotating the drill bit assembly while urging the drill bit assembly upward creates a groove in a subterranean formation adjacent the primary wellbore. This forms a ledge at a far end of the groove. The drill string is then drawn back from the groove, and the pilot bit is deployed. Urging the drill bit assembly forward engages the pilot bit with the ledge, providing leverage for retaining the drill bit assembly in an orientation for excavating the lateral wellbore.

Abstract: A multi-zone well test system, that can flow test multiple zones within a subterranean formation and without the use of a rig. The system includes an inflow control tool that is ball actuated, a top diverter sub, a zonal isolation packer, a bottom diverter sub, and a dual-conduit tubing system. An advantage of the test system is that the subs and packers can be individually actuated without a surface operated control system.

Abstract: A crossover sub includes a tubular housing connected to a drill string in a wellbore, a sealing structure to seal against a wellbore wall, and a sleeve valve disposed within the housing and movable between a closed position and an open position in response to a fluid pressure in a first flow chamber or second, separate flow chamber of the housing. The first flow chamber fluidly connects an upper annulus of the wellbore to a central bore of the drill string downhole of the crossover sub. The second flow chamber fluidly connects a central bore of the drill string uphole of the sealing structure to a lower annulus of the wellbore. The sleeve valve closes the second flow chamber in response to the sleeve valve being in the closed position, and opens the second flow chamber in response to the sleeve valve being in the open position.

Abstract: An expandable liner hanger system for forging a pressure seal and hanging of the liner weight against outer casing string in a wellbore that includes an outer casing string, and an inner casing string positioned within the outer casing string and having an inner diameter. The system also includes an elongate inner string tool selectively insertable into the inner casing string and having a torque locking sleeve that removably couples with the inner casing string. Also included in the expandable liner hanger system is an expansion cone slidable along the inner string tool and having a diameter greater than the inner diameter of the inner casing string so that when the cone is urged into the inner casing string, the larger diameter cone deforms the inner casing string radially outward into engagement with the outer casing string. The system also includes a downhole hydraulic force intensifier.

Abstract: A well tool for use in completing a wellbore includes a tubular housing having a central bore and a housing port through a wall of the tubular housing, an inner mandrel disposed within the tubular housing and selectively movable between a first, closed position and a second, open position in response to a fluid pressure in the central bore, a sealing element circumscribing a portion of the tubular housing, and a setting sleeve. The inner mandrel is configured to open the housing port when the inner mandrel is in the second, open position. The setting sleeve is movable between a first, retracted position and a second, expanded position, where the setting sleeve is configured to activate the sealing element in the second, expanded position in response to movement of the inner mandrel to the second, open position.

Abstract: A downhole tool system includes a base tubular that includes a bore therethrough; a centralizer positioned to ride on the base tubular, the centralizer expandable to contact a wellbore wall and adjust a location of the downhole tool system relative to the wellbore wall based on a first fluid pressure supplied through the bore; and a liner top assembly positioned to ride on the base tubular, the liner top assembly including a wellbore liner and a pack-off element, the pack-off element expandable to at least partially seal a liner top of the wellbore liner to the wellbore wall based on a second fluid pressure supplied through the bore.