Direct drive unit removal system and associated methods

1. A direct drive unit (DDU) positioner assembly for positioning a DDU housed in an enclosure for removal from the enclosure, the DDU including a gearbox and a turbine engine connected to the gearbox for driving a driveshaft connected to a pump for use in high-pressure, high-power, hydraulic fracturing operations, the enclosure having an enclosure base and a plurality of lubrication grooves positioned in the enclosure base, the DDU positioner assembly comprising:

a platform configured to connect to a support of the gearbox when positioned adjacent thereto and mount on the enclosure base, the enclosure base having the plurality of lubrication grooves for facilitating sliding movement of the platform relative to the enclosure base; and

a lubricator to convey lubricant to the lubrication grooves,

the platform being configured to fixedly attached to the enclosure base by a plurality fasteners during operation of the DDU and in slidable engagement with the enclosure base upon removal of the plurality of fasteners.

2. The DDU positioner assembly of claim 1 , wherein upon removal of plurality of fasteners from the enclosure base, the platform is slidable on the enclosure base in a direction of the lubrication grooves, wherein the platform comprises a plurality of lift openings for access by a lifting mechanism, the plurality of lift openings being offset from a centerline of the gearbox when the platform is connected to the enclosure base, wherein the lift openings comprise a first lift opening and a second lift opening, the first lift opening being spaced apart from the centerline of the gearbox by a first distance, the second lift opening being spaced apart from the centerline of the gearbox by a second distance, the second distance being greater than the first distance, and wherein the second lift opening is positioned closer to the turbine engine than the first lift opening.

3. The DDU positioner assembly of claim 2 , further comprising one or more drive fasteners in contact with the platform, the one or more drive fasteners being operable to initiate sliding movement of the platform along the enclosure base to position the lift openings for access by the lifting mechanism, wherein the platform comprises an upper surface supporting the gearbox, a lower surface in slidable engagement with the enclosure base, two sides, and two ends, the lift openings extending in a lateral direction through the two sides of the platform, and wherein the one or more drive fasteners are operatively connected to one of the ends of the platform and are operable to initiate sliding movement of the platform in a longitudinal direction.

4. The DDU positioner assembly of claim 1 , wherein the enclosure base includes a lubrication portion of a floor of the enclosure, the lubrication portion having the lubrication grooves and being operably connected to the lubricator, and wherein the enclosure base comprises a removable pad secured to the floor of the enclosure, the removable pad having the lubrication grooves fluidly connected to the lubricator.

5. The DDU positioner assembly of claim 3 , further comprising one or more actuators operatively connected to the platform, the one or more actuators being operable to initiate sliding movement of the platform along the enclosure base to position the lift openings for access by the lifting mechanism, wherein the platform includes an upper surface supporting the gearbox, a lower surface in slidable engagement with the base, two sides, and two ends, the lift openings extending in a lateral direction through the two sides of the platform, and wherein the one or more actuators is operatively connected to one of the ends of the platform and is operable to initiate sliding movement of the enclosure base in a longitudinal direction.

6. A direct drive unit (DDU) positioner assembly for positioning a DDU housed in an enclosure for removal from the enclosure, the DDU including a gearbox and a turbine engine connected to the gearbox for driving a driveshaft connected to a pump for use in high-pressure, high-power, hydraulic fracturing operations, the enclosure having an enclosure base and a plurality of lubrication grooves positioned in the enclosure base, the DDU positioner assembly comprising:

a platform configured to connect to a support of the gearbox when positioned adjacent thereto and mount on the enclosure base, the enclosure base having the plurality of lubrication grooves for facilitating sliding movement of the platform relative to the enclosure base; and

a lubricator to convey lubricant to the lubrication grooves,

the platform being configured to fixedly attached to the enclosure base by a plurality fasteners during operation of the DDU and in slidable engagement with the enclosure base upon removal of the plurality of fasteners, upon removal of plurality of fasteners from the enclosure base, the platform being slidable on the enclosure base in a direction of the lubrication grooves, the platform also including one or more lift openings for access by a lifting mechanism.

7. The DDU positioner assembly of claim 6 , wherein the one or more lift openings comprise a plurality of lift openings for access by the lifting mechanism, the plurality of lift openings being offset from a centerline of the gearbox when the platform is connected to the enclosure base, wherein the lift openings comprise a first lift opening and a second lift opening, the first lift opening being spaced apart from the centerline of the gearbox by a first distance, the second lift opening being spaced apart from the centerline of the gearbox by a second distance, the second distance being greater than the first distance, and wherein the second lift opening is positioned closer to the turbine engine than the first lift opening.

8. The DDU positioner assembly of claim 6 , further comprising one or more drive fasteners in contact with the platform, the one or more drive fasteners being operable to initiate sliding movement of the platform along the enclosure base to position the one or more lift openings for access by the lifting mechanism, wherein the platform comprises an upper surface supporting the gearbox, a lower surface in slidable engagement with the base, two sides, and two ends, the one or more lift openings extending in a lateral direction through the two sides of the platform, and wherein the one or more drive fasteners are operatively connected to one of the ends of the platform and are operable to initiate sliding movement of the platform in a longitudinal direction.

9. The DDU positioner assembly of claim 8 , wherein the enclosure base includes a lubrication portion of a floor of the enclosure, the lubrication portion having the lubrication grooves and being operably connected to the lubricator, and wherein the enclosure base comprises a removable pad secured to the floor of the enclosure, the removable pad having the lubrication grooves fluidly connected to the lubricator.

10. The DDU positioner assembly of claim 6 , further comprising one or more actuators operatively connected to the platform, the one or more actuators being operable to initiate sliding movement of the platform along the enclosure base to position the one or more lift openings for access by the lifting mechanism, wherein the platform includes an upper surface supporting the gearbox, a lower surface in slidable engagement with the base, two sides, and two ends, the one or more lift openings extending in a lateral direction through the two sides of the platform, and is operable to initiate sliding movement of the enclosure base in a longitudinal direction.

11. A direct drive unit (DDU) positioner assembly for positioning a DDU housed in an enclosure for removal from the enclosure, the DDU including a gearbox and a turbine engine connected to the gearbox for driving a driveshaft connected to a pump for use in high-pressure, high-power, hydraulic fracturing operations, the enclosure having an enclosure base and a plurality of lubrication grooves positioned in the enclosure base, the DDU positioner assembly comprising:

a platform configured to connect to a support of the gearbox when positioned adjacent thereto and mount on the enclosure base, the enclosure base having the plurality of lubrication grooves for facilitating sliding movement of the platform relative to the enclosure base, the platform also being configured to fixedly attached to the enclosure base by a plurality fasteners during operation of the DDU and being configured in slidable engagement with the enclosure base upon removal of the plurality of fasteners;

a lubricator to convey lubricant to the lubrication grooves; and

one or more actuators operatively connected to the platform, the one or more actuators being operable to initiate sliding movement of the platform along the enclosure base to position one or more lift openings for access by a lifting mechanism,

the platform also includes an upper surface supporting the gearbox, a lower surface in slidable engagement with the base, two sides, and two ends, the one or more lift openings extending in a lateral direction through the sides of the platform, and the one or more actuators being operatively connected to one of the ends of the platform and being operable to initiate sliding movement of the enclosure base in a longitudinal direction, and the enclosure base including a lubrication portion of a floor of the enclosure, the lubrication portion having the lubrication grooves and being operably connected to the lubricator, and

the enclosure base comprises a removable pad secured to the floor of the enclosure, the removable pad having the lubrication grooves fluidly connected to the lubricator.

12. The DDU positioner assembly of claim 11 , wherein the one or more lift openings comprise a plurality of lift openings for access by the lifting mechanism, the plurality of lift openings being offset from a centerline of the gearbox when the platform is connected to the enclosure base, wherein the lift openings comprise a first lift opening and a second lift opening, the first lift opening being spaced apart from the centerline of the gearbox by a first distance, the second lift opening being spaced apart from the centerline of the gearbox by a second distance, the second distance being greater than the first distance, and wherein the second lift opening is positioned closer to the turbine engine than the first lift opening.

13. The DDU positioner assembly of claim 12 , further comprising one or more drive fasteners in contact with the platform, the one or more drive fasteners being operable to initiate sliding movement of the platform along the enclosure base to position the one or more lift openings for access by the lifting mechanism, and wherein are operable to initiate sliding movement of the platform in the longitudinal direction.