An apparatus for removing sand from a well fluid includes a pressure vessel having an inlet and an outlet. The well fluid flows into the pressure vessel through the inlet and flows out of the pressure vessel through the outlet. A screen is positioned at least partially within the pressure vessel and configured to remove the sand from the well fluid. At least a portion of the sand that is removed from the well fluid at least partially obstructs one or more openings in the screen. A cleaning assembly is positioned at least partially between the pressure vessel and the screen and configured to remove the sand that is obstructing the one or more openings in the screen during a screen-cleaning operation.

A filter extractor may include a first gutter fixed to a tool body and a second gutter being pivotably connected to the tool body. Additionally, a lifting device may be provided on the filter extractor. The lifting device is configured to extend and retract a line through the first gutter and the second gutter to extract a filter from a fluid conduit.

A filter extractor may include a first gutter fixed to a tool body and a second gutter being pivotably connected to the tool body. Additionally, a lifting device may be provided on the filter extractor. The lifting device is configured to extend and retract a line through the first gutter and the second gutter to extract a filter from a fluid conduit.

A device for separating broken fragments of particles from the particles, comprising a floor arranged such that it receives the particles and the broken fragments, connected to a vibration device arranged such that it makes the floor undergo a vibratory movement, the floor being pierced with orifices to allow the broken fragments to pass through the orifices without allowing the particles to pass therethrough, and a ceiling arranged substantially parallel to the floor. The device further comprises an actuator arranged so as to move the ceiling between a first position in which it is located at a distance from the floor and a second position in which it is in contact with the floor such that the broken particle fragments stuck in the orifices are expelled therefrom.

In one aspect of the present disclosure, a rotary sifter is disclosed that includes a body assembly, a drive mechanism, and a base assembly supporting the body assembly and the drive mechanism. The body assembly includes a housing, a screen frame assembly that is positioned within the housing, and a rotor assembly mounted for rotation within the screen frame assembly. The drive mechanism is in mechanical cooperation with the rotor assembly to rotate the rotor assembly, and is axially fixed in relation to the housing, the screen frame assembly, and the rotor assembly. The base assembly includes a guide rail system that is configured and dimensioned to permit longitudinal movement of the rotor assembly and the screen frame assembly in relation to the housing and the drive mechanism to allow for removal of the rotor assembly and the screen frame assembly from the housing.

In one aspect of the present disclosure, a rotary sifter is disclosed that includes a body assembly, a drive mechanism, and a base assembly supporting the body assembly and the drive mechanism. The body assembly includes a housing, a screen frame assembly that is positioned within the housing, and a rotor assembly mounted for rotation within the screen frame assembly. The drive mechanism is in mechanical cooperation with the rotor assembly to rotate the rotor assembly, and is axially fixed in relation to the housing, the screen frame assembly, and the rotor assembly. The base assembly includes a guide rail system that is configured and dimensioned to permit longitudinal movement of the rotor assembly and the screen frame assembly in relation to the housing and the drive mechanism to allow for removal of the rotor assembly and the screen frame assembly from the housing.

A vibratory screener includes a screen carrier frame having inner and outer circumferences, a horizontal screen for separation of solid particles within and vertically supported by the frame, one or more vibration motors on the outer circumference of the screen carrier frame and configured to generate vibration perpendicular to the screen, and at least two internal annular disks each having an inner rim and an outer rim. Each internal annular disk is attached to the inner circumference of the frame by its outer rim, the internal annular disks are spaced apart from each other in parallel planes, and an inner sleeve is arranged within the frame. The inner sleeve is attached the inner rims of two of the internal annular disks, where the upper internal annular disk and the inner sleeve provide an unbroken surface and where the lower internal annular disk has openings towards the outside environment.

A metal mesh has a plurality of through-holes. A photosensitive organic material is attached to at least part of the metal mesh. The metal mesh is sterilized and/or cleaned. A determination of whether or not the sterilization and/or cleaning has been successful is made by analyzing the photosensitive organic material attached to the metal mesh.

A metal mesh has a plurality of through-holes. A photosensitive organic material is attached to at least part of the metal mesh. The metal mesh is sterilized and/or cleaned. A determination of whether or not the sterilization and/or cleaning has been successful is made by analyzing the photosensitive organic material attached to the metal mesh.

An apparatus for removing sand from a well fluid includes a pressure vessel having an inlet and an outlet. The well fluid flows into the pressure vessel through the inlet and flows out of the pressure vessel through the outlet. A screen is positioned at least partially within the pressure vessel and configured to remove the sand from the well fluid. At least a portion of the sand that is removed from the well fluid at least partially obstructs one or more openings in the screen. A cleaning assembly is positioned at least partially between the pressure vessel and the screen and configured to remove the sand that is obstructing the one or more openings in the screen during a screen-cleaning operation.