A method of manufacturing a base pipe for use in horizontal well completion, the method includes wrapping an inner shroud around a base pipe, the inner shroud is disconnected from the base pipe and forms seams along each edge of the inner shroud; fusing the seams together; allowing the inner shroud to cool, the inner shroud shrinks around the base pipe to form a friction lock between the base pipe and the inner shroud; laying a filter medium onto an outer shroud, wherein the filter medium is disconnected from the outer shroud, thereby creating a mesh filter medium/outer shroud sheet; wrapping filter medium/outer shroud sheet around the inner shroud, the filter medium is positioned between the inner shroud and outer shroud, thereby creating a second set of seams; and fusing the second set of seams together, thereby creating a second friction lock between the outer shroud and the inner shroud.

A filter system with a filter housing that has an inlet for the fluid to be filtered and an outlet for the filtered fluid. A filter element is arranged in the filter housing and is provided with a fiberglass-containing filter medium. A fiberglass barrier for retaining fiberglass particles contained in the filtered fluid is arranged fluidically downstream of the fiberglass-containing filter medium. The fiberglass barrier is a wound body of a wound filter material with an average pore size of smaller than 20 m. The wound body has a maximum winding thickness of 1.5 mm.

A filter system for filtering a fluid has at least one filter housing with a first housing part and a second housing part. The filter housing has at least one inlet and at least one outlet for the fluid. A fluid path extends between the at least one inlet and the at least one outlet. At least one filter element is arranged in the at least one filter housing in the fluid path. At least one damper element is provided that is completely or partially filled with the fluid at least after an initial filling. The at least one damper element is provided with a volume that, at least in operation of the filter system, is filled completely or partially with the fluid. The volume is separated from the fluid path.

An elongated shroud includes a perforated exterior surface, having rows of holes extending into an interior of the elongated shroud; each row of the have holes of a same width; and the width of the holes associated with each row decrease in each row out from a center row of holes.

A filter cartridge with easier extraction provided by a roll-out clearance region for a radial seal is provided. The filter cartridge may be a two stage filter with the seal being located between stages and usable in a filtration vessel having a central separation wall with one or more riser pipes. Also, a new vessel is disclosed with multiple diameters for first and second stages of the housing with a larger second stage diameter as compared to the first stage, which can reduce door size and/or cause fluid flow velocities to be slower at the second stage relative to the first stage.

In one example, a filter core includes a body with a generally cylindrical shape and a substantially hollow interior. The body includes a first annular wall disposed proximate a first end of the body, and a second annular wall disposed proximate a second end of the body such that the second annular wall is axially spaced apart from the first annular wall, and the second annular wall and the first annular wall extend toward each other. As well, the filter core includes a framework connected to the first annular wall and the second annular wall. The framework and the first and second annular walls cooperate with each other to define a group of openings, each of which communicates with the substantially hollow interior of the body, and the openings collectively define an open space of the filter core.

A filter cartridge with easier extraction provided by a roll-out clearance region for a radial seal is provided. The filter cartridge may be a two stage filter with the seal being located between stages and usable in a filtration vessel having a central separation wall with one or more riser pipes. Also, a new vessel is disclosed with multiple diameters for first and second stages of the housing with a larger second stage diameter as compared to the first stage, which can reduce door size and/or cause fluid flow velocities to be slower at the second stage relative to the first stage.

A method of making depth filtration media, such as for use in a depth filter, are described. The resulting depth filtration media includes a core tube having two or more different layers. The layers can be fibers, such as polymeric or inorganic fibers, wrapped layers of a filter material, or pleated and folded layers of a filter material.

A structure in which no shearing force acts on each member is desired to be used at a welded part where a stress is liable to be concentrated. To solve this problem, the flange member includes a cap member, a ring member, and sheet-shaped thermoplastic resin member. At least one end of the thermoplastic resin member includes a protruding part that protrudes from an end surface of the cap member and from an end surface of the ring member. The protruding part is welded to the end surface of the cap member and to the end surface of the ring member.