An example method includes deploying an example system in a vicinity of the lost circulation zone. The example system includes a stop lost-circulation balloon (SLCB) tool. An example SLCB tool includes an inflatable balloon and a tubing string including a fluid conduit. The string is in fluid connection with the balloon. The method includes deploying, from the SLCB tool, the balloon and forcing slurry into the balloon to cause at least part of the balloon containing the slurry into the fracture. The method includes allowing the slurry to set for a period of time to produce a solid. The method includes drilling through the solid in the balloon in the wellbore, leaving the solid in the fracture.

An example method includes deploying an example system in a vicinity of the lost circulation zone. The example system includes a stop lost-circulation balloon (SLCB) tool. An example SLCB tool includes an inflatable balloon and a tubing string including a fluid conduit. The string is in fluid connection with the balloon. The method includes deploying, from the SLCB tool, the balloon and forcing slurry into the balloon to cause at least part of the balloon containing the slurry into the fracture. The method includes allowing the slurry to set for a period of time to produce a solid. The method includes drilling through the solid in the balloon in the wellbore, leaving the solid in the fracture.

Systems and methods for neutralizing a hydrogen sulfide within a subterranean well include a hydrogen sulfide neutralizing tool having a tubular member. A tool shell circumscribes the tubular member, defining tool annular space between an outer diameter surface of the tubular member and an inner diameter surface of the tool shell. A sacrificial rod is located within the tool annular space and is formed of a material that produces metal sulfide when exposed to the hydrogen sulfide. An uphole perforation has an opening extending through a sidewall of the tubular member, defining a fluid flow path between the tool annular space and the internal bore of the tubular member. A downhole perforation is located downhole of the uphole perforation and hays an opening extending through the sidewall of the tubular member, defining a fluid flow path between the tool annular space and the internal bore of the tubular member.

Systems and methods for neutralizing a hydrogen sulfide within a subterranean well include a hydrogen sulfide neutralizing tool having a tubular member. A tool shell circumscribes the tubular member, defining tool annular space between an outer diameter surface of the tubular member and an inner diameter surface of the tool shell. A sacrificial rod is located within the tool annular space and is formed of a material that produces metal sulfide when exposed to the hydrogen sulfide. An uphole perforation has an opening extending through a sidewall of the tubular member, defining a fluid flow path between the tool annular space and the internal bore of the tubular member. A downhole perforation is located downhole of the uphole perforation and hays an opening extending through the sidewall of the tubular member, defining a fluid flow path between the tool annular space and the internal bore of the tubular member.

An example method includes deploying an example system in a vicinity of the lost circulation zone. The example system includes a stop lost-circulation balloon (SLCB) tool. An example SLCB tool includes an inflatable balloon and a tubing string including a fluid conduit. The string is in fluid connection with the balloon. The method includes deploying, from the SLCB tool, the balloon and forcing slurry into the balloon to cause at least part of the balloon containing the slurry into the fracture. The method includes allowing the slurry to set for a period of time to produce a solid. The method includes drilling through the solid in the balloon in the wellbore, leaving the solid in the fracture.

An example method includes deploying an example system in a vicinity of the lost circulation zone. The example system includes a stop lost-circulation balloon (SLCB) tool. An example SLCB tool includes an inflatable balloon and a tubing string including a fluid conduit. The string is in fluid connection with the balloon. The method includes deploying, from the SLCB tool, the balloon and forcing slurry into the balloon to cause at least part of the balloon containing the slurry into the fracture. The method includes allowing the slurry to set for a period of time to produce a solid. The method includes drilling through the solid in the balloon in the wellbore, leaving the solid in the fracture.

A downhole tool and method therefor use a deviated flow path to prevent/mitigate fallback of solids during shutdown of an ESP. The deviated flow path leverages the direction of fallback downhole and the relative inertias of the solid particulates and the fluid to minimize fallback into the ESP. The particulates change flow direction more slowly than fluid, and thus largely avoid the deviated flow path to instead fall through a bypass path during fallback. This obviates the need for mechanical valves that may be subject to excessive mechanical wear or other issues associated with solid particulates.

The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems.

Various systems, methods, and devices are disclosed for handling contaminants in a wellbore or riser. A washpipe debris trap (WPDT) traps contaminants traveling up a wellbore from a downhole location, and the WPDT may serve as an indicator for a breached screen in a downhole location. A marine riser reversing tool (MRRT) may reverse the flow of fluid between a workstring conduit and an annulus between the workstring and the wellbore such that fluid rises to the wellhead with greater velocity. A bi-directional chamber trap (BDCT) may be utilized in a wellbore operation to remove contaminants from a fluid.

A downhole mud filter (100) comprising a tubular member (1) connectable to the drill string used to prevent debris-laden fluid from entering sensitive BHA tools and components further downhole relative to the mud filter. A tubular member having a sub assembly consisting of a bristle rings (6) and/or rupture (7) to intentionally create a restriction and divert debris-laden fluid around a cylindrical mesh (2) and/or screen surrounded by permanent magnets (3). The openings (9) on the mesh and/or screen allow fluid to pass through while preventing particulates or debris from entering and retaining such debris on the outside of the screen and/or mesh. Magnets (3) arranged around the outer diameter of the screen and/or mesh (2) and along its length captures and retains smaller ferrous debris which the screen and/or mesh cannot filter.