Abstract: A conveyance model for predicting an output in response to an input, wherein: the input comprises one or more of a wireline input, a toolstring input, a well input, and/or a conveyance input; and the output comprises one or more of a surface weight versus depth output, a cable head tension versus depth output, and a jarring effect output.

Abstract: A downhole tool and method for reducing friction between a tool string and a sidewall of a wellbore. The downhole tool includes a first wheel, a second wheel, and a hump. When the downhole tool is connected to the tool string, the first wheel, the second wheel, and the hump each extend away from the tool string and collectively define a curved outer profile extending circumferentially around at least a portion of a circumference of the tool string, and the curved outer profile has a geometric center that is offset from a central axis of the tool string.

Abstract: A downhole tool and method for reducing friction between a tool string and a sidewall of a wellbore. The downhole tool includes a first wheel, a second wheel, and a hump. When the downhole tool is connected to the tool string, the first wheel, the second wheel, and the hump each extend away from the tool string and collectively define a curved outer profile extending circumferentially around at least a portion of a circumference of the tool string, and the curved outer profile has a geometric center that is offset from a central axis of the tool string.

Abstract: An apparatus and method for performing automated pump-down operations. An apparatus may include a control system configured to be communicatively connected with a fluid pump disposed at a wellsite surface and with a conveyance device disposed at the wellsite surface. The control system may be operable to cause the conveyance device to unwind a conveyance line connected with a tool string disposed within a wellbore, and cause the fluid pump to pump a fluid into the wellbore such that the fluid moves the tool string along the wellbore while the conveyance device unwinds the conveyance line.

Abstract: A downhole release apparatus having a first connector sub connectable with a first portion of a tool string and a second connector sub connectable with a second portion of the tool string. The first connector sub may include a housing, a first latching member, and a blocking member. The second connector sub may include a second latching member. The first and second latching members may engage thereby connecting the first and second connector subs. The blocking member may be movable from a first position in which the blocking member prevents the first and second latching members from disengaging to a second position in which the blocking member permits the first and second latching members to disengage thereby permitting the first and second connector subs to disconnect. Relative movement between the housing and first latching member may facilitate movement of the blocking member from the first position to the second position.

Abstract: Apparatus and methods for running casing into a wellbore. An apparatus may be or include a casing collar configured to couple together a first casing joint and a second casing joint. The casing collar may have a body and a plurality of rotatable members connected to the body. The body may have a fluid passage extending axially therethrough, a first coupler configured to couple the casing collar with the first casing joint, and a second coupler configured to couple the casing collar with the second casing joint. At least a portion of each rotatable member may extend from the body in a radially outward direction.

Abstract: A downhole tool and method for orienting a tool string within a passage, wherein the passage is a wellbore or a tubular member disposed in a wellbore. The downhole tool may include a frame (210) operable for connection with the tool string (100), a first orienting feature (211) connected to a first side of the frame (210), and a second orienting feature (212) connected to a second side of the frame (210). The first orienting feature (211) may be rotatable relative to the frame about a first axis of rotation that is offset from a central axis of the tool string and the second orienting feature (212) may be rotatable relative to the frame about a second axis of rotation that is offset from the central axis of the tool string.

Abstract: A conveyance model for predicting an output in response to an input, wherein: the input comprises one or more of a wireline input, a toolstring input, a well input, and/or a conveyance input; and the output comprises one or more of a surface weight versus depth output, a cable head tension versus depth output, and a jarring effect output.

Abstract: An apparatus and method for performing automated pump-down operations. An apparatus may include a control system configured to be communicatively connected with a fluid pump disposed at a wellsite surface and with a conveyance device disposed at the wellsite surface. The control system may be operable to cause the conveyance device to unwind a conveyance line connected with a tool string disposed within a wellbore, and cause the fluid pump to pump a fluid into the wellbore such that the fluid moves the tool string along the wellbore while the conveyance device unwinds the conveyance line.

Abstract: A downhole release apparatus having a first connector sub connectable with a first portion of a tool string and a second connector sub connectable with a second portion of the tool string. The first connector sub may include a housing, a first latching member, and a blocking member. The second connector sub may include a second latching member. The first and second latching members may engage thereby connecting the first and second connector subs. The blocking member may be movable from a first position in which the blocking member prevents the first and second latching members from disengaging to a second position in which the blocking member permits the first and second latching members to disengage thereby permitting the first and second connector subs to disconnect. Relative movement between the housing and first latching member may facilitate movement of the blocking member from the first position to the second position.

Abstract: An apparatus and method for connecting and selectively disconnecting within a wellbore first and second portions of a downhole tool string from each other. The apparatus may be a downhole tool having a first connector sub connectable with the first portion of the downhole tool string, a second connector sub connectable with the second portion of the downhole tool string, an internal chamber, and a fastener connecting the first and second connector subs. At least a portion of the fastener fluidly separates the internal chamber into a first chamber portion and a second chamber portion. The first chamber portion is fluidly connected with the space external to the downhole tool. The downhole tool is selectively operable to disconnect the first and second connector subs from each other to disconnect the first and second portions of the downhole tool string from each other.

Abstract: An impact tool for coupling between opposing first and second portions of a downhole tool. The impact tool may include a housing having opposing first and second ends, a first shaft extending from within the housing at the first end of the housing, a second shaft extending from within the housing at the second end of the housing, an energy storing member disposed within the housing, and a latching mechanism operable to selectively permit relative motion between the housing and the second shaft to release energy stored in the energy storing member to impart an impact to the downhole tool string.

Abstract: Apparatus and methods for running casing into a wellbore. An apparatus may be or include a casing collar configured to couple together a first casing joint and a second casing joint. The casing collar may have a body and a plurality of rotatable members connected to the body. The body may have a fluid passage extending axially therethrough, a first coupler configured to couple the casing collar with the first casing joint, and a second coupler configured to couple the casing collar with the second casing joint. At least a portion of each rotatable member may extend from the body in a radially outward direction.

Abstract: A downhole-adjusting impact apparatus (DAIA) mechanically coupled between opposing first and second portions of a tool string, wherein: the tool string is conveyable within a wellbore extending between a wellsite surface and a subterranean formation; the first tool string portion comprises a first electrical conductor in electrical communication with surface equipment disposed at the wellsite surface; the DAIA comprises a second electrical conductor in electrical communication with the first electrical conductor; and the DAIA is operable to: detect an electrical characteristic of the second electrical conductor; impart a first impact force on the second tool string portion when the electrical characteristic is detected; and impart a second impact force on the second tool string portion when the electrical characteristic is not detected, wherein the second impact force is substantially greater than the first impact force.

Abstract: An apparatus and method for connecting and selectively disconnecting within a wellbore first and second portions of a downhole tool string from each other. The apparatus may be a downhole tool having a first connector sub connectable with the first portion of the downhole tool string, a second connector sub connectable with the second portion of the downhole tool string, an internal chamber, and a fastener connecting the first and second connector subs. At least a portion of the fastener fluidly separates the internal chamber into a first chamber portion and a second chamber portion. The first chamber portion is fluidly connected with the space external to the downhole tool. The downhole tool is selectively operable to disconnect the first and second connector subs from each other to disconnect the first and second portions of the downhole tool string from each other.

Abstract: A downhole tool and method for orienting a tool string within a passage, such as a wellbore or a tubular disposed in the wellbore. The downhole tool may be operable for detachably connecting with the tool string and orienting the tool string within the passage. The downhole tool may include a frame comprising a first frame portion and a second frame portion, wherein the first and second frame portions may be detachably connectable with each other around the tool string to detachably connect the frame with the tool string. The downhole tool may further include a first orienting feature rotatably connected with the first frame portion along a first axis of rotation and a second orienting feature rotatably connected with the second frame portion along a second axis of rotation. The first and second axes of rotation may be radially offset from a central axis of the tool string.

Abstract: An impact apparatus conveyable in a tool string within a wellbore comprises a mandrel, a first impact feature, and a latch pin retainer encircling an end of the mandrel. A release sleeve encircles a portion of the latch pin retainer and includes a radial recess. Latch pins retained by the latch pin retainer are slidable into and out of the radial recess, and prevent disengagement of the mandrel end from the latch pin retainer when not extending into the radial recess. A release member electromagnetically causes relative translation of the latch pin retainer and the release sleeve, including aligning the latch pins with the radial recess and thereby permitting the disengagement. A second impact feature is positioned to impact the first impact feature in response to the disengagement when the impact apparatus is under tension.

Abstract: An apparatus comprising a housing to be coupled to an end of a downhole tool, a member rotatably coupled to the housing, and first and second arms extending from the member. A first wheel is rotatably coupled between the first and second arms, a second wheel is rotatably coupled with the first arm opposite the first wheel, and a third wheel is rotatably coupled with the second arm opposite the first wheel. The first, second, and third wheels independently rotate relative to the first and second arms, and collectively rotate with the member relative to the housing.

Abstract: An impact tool for coupling between opposing first and second portions of a downhole tool. The impact tool may include a housing (210, 240) having opposing first and second ends, a first shaft (208) extending from within the housing at the first end of the housing, a second shaft (238) extending from within the housing at the second end of the housing, an energy storing member (226, 278) disposed within the housing, and a latching mechanism (264) operable to selectively permit relative motion between the housing and the second shaft to release energy stored in the energy storing member to impart an impact to the downhole tool string.

Abstract: A downhole tool and method for orienting a tool string within a passage, wherein the passage is a wellbore or a tubular member disposed in a wellbore. The downhole tool may include a frame (210) operable for connection with the tool string (100), a first orienting feature (211) connected to a first side of the frame (210), and a second orienting feature (212) connected to a second side of the frame (210). The first orienting feature (211) may be rotatable relative to the frame about a first axis of rotation that is offset from a central axis of the tool string and the second orienting feature (212) may be rotatable relative to the frame about a second axis of rotation that is offset from the central axis of the tool string.