Provided here are methods and system to detect an untethered device in a wellhead. The untethered device includes a housing, a transducer, and one or more sensors configured to measure data along the subterranean well. The transducer emits acoustic signals that are received by microphones on the surface of the wellhead. Based on these acoustic signals, the location of the untethered device is determined and appropriate valves may be opened or closed by an operator.

A wireline chamber tool for dispensing and collecting fluid is disclosed. The wireline chamber tool includes a tool body having an internal chamber therein, a piston within the internal chamber that divides the internal chamber into a proximal portion and a distal portion, a circulation port disposed in the tool body, where the circulation port is configured to provide fluid communication between the distal portion and an outside of the tool, and a filling port disposed in the tool body, wherein the filling port is configured to provide fluid communication between the outside of the tool and the proximal portion.

A wireline chamber tool for dispensing and collecting fluid is disclosed. The wireline chamber tool includes a tool body having an internal chamber therein, a piston within the internal chamber that divides the internal chamber into a proximal portion and a distal portion, a circulation port disposed in the tool body, where the circulation port is configured to provide fluid communication between the distal portion and an outside of the tool, and a filling port disposed in the tool body, wherein the filling port is configured to provide fluid communication between the outside of the tool and the proximal portion.

An assembly disposed within a subterranean wellbore can include a first dislodging tool coupled to a bottom end of a tubing string, wherein the first dislodging tool, when enabled at a first time, performs a first action to free at least one service tool, disposed below the first dislodging tool in the subterranean wellbore, from being stuck.

A system for remediating a blockage in a subsea a subsea fluid system includes a hot tap system connected to an outer surface of a subsea fluid conduit of the subsea fluid system, a first flowpath extending from a fluid source, through the first coiled tubing and the hot tap system, and into the subsea fluid conduit, and a second flowpath extending from the subsea fluid conduit and through the hot tap system, wherein the second flowpath is separate from the first flowpath, wherein the hot tap system is configured to inject a first fluid into the subsea fluid conduit along the first flowpath and receive a second fluid from the subsea fluid conduit along the second flowpath.

A system for remediating a blockage in a subsea a subsea fluid system includes a hot tap system connected to an outer surface of a subsea fluid conduit of the subsea fluid system, a first flowpath extending from a fluid source, through the first coiled tubing and the hot tap system, and into the subsea fluid conduit, and a second flowpath extending from the subsea fluid conduit and through the hot tap system, wherein the second flowpath is separate from the first flowpath, wherein the hot tap system is configured to inject a first fluid into the subsea fluid conduit along the first flowpath and receive a second fluid from the subsea fluid conduit along the second flowpath.

A wellbore tool assembly to release stuck pipe includes a tubular that includes an outer wall, an inner wall and an annular compartment defined between the outer wall and the inner wall. A quantity of acid is carried within the annular compartment of the tubular. Multiple ports are formed in the tubular. Each port fluidically connects an inner volume of the tubular with a volume outside the tubular through the annular compartment. The assembly includes a ball seat disposed within the tubular. The ball seat is configured to receive a ball dropped into the tubular. The multiple ports are configured to switch between an open position and a closed position. When in the open position, the multiple ports permit flow of the acid from the annular compartment to the formation. When in the closed position, the multiple ports prevent fluid flow from the annular compartment to the formation.

A wellbore tool assembly to release stuck pipe includes a tubular that includes an outer wall, an inner wall and an annular compartment defined between the outer wall and the inner wall. A quantity of acid is carried within the annular compartment of the tubular. Multiple ports are formed in the tubular. Each port fluidically connects an inner volume of the tubular with a volume outside the tubular through the annular compartment. The assembly includes a ball seat disposed within the tubular. The ball seat is configured to receive a ball dropped into the tubular. The multiple ports are configured to switch between an open position and a closed position. When in the open position, the multiple ports permit flow of the acid from the annular compartment to the formation. When in the closed position, the multiple ports prevent fluid flow from the annular compartment to the formation.

A downhole device comprising a novel apparatus and vibratory assemblage that initiates and maintains mechanical agitation within the horizontal section of a well bore by providing both low and high vibration, in multiple axes and planes, and through pulsing of high-pressure fluids within the confines of the apparatus and drilling pipe. Through the judicious and conservative use of fluids, the present invention provides both rotationally accelerated low and high vibration and high-intensity, directed and timed pressure to reduce the cumulative friction between the drill string and bottom hole assembly on a wellbore. Additionally, the present apparatus can be preprogrammed to respond to specific commands, in response to certain predetermined conditions, to stop and start functioning at various times throughout the drilling process.

A downhole device comprising a novel apparatus and vibratory assemblage that initiates and maintains mechanical agitation within the horizontal section of a well bore by providing both low and high vibration, in multiple axes and planes, and through pulsing of high-pressure fluids within the confines of the apparatus and drilling pipe. Through the judicious and conservative use of fluids, the present invention provides both rotationally accelerated low and high vibration and high-intensity, directed and timed pressure to reduce the cumulative friction between the drill string and bottom hole assembly on a wellbore. Additionally, the present apparatus can be preprogrammed to respond to specific commands, in response to certain predetermined conditions, to stop and start functioning at various times throughout the drilling process.