Desander assembly for plunger lift system

A separator assembly in combination with a tubing string, the separator assembly comprising:

• an outer tubular member having an upper end, a lower end, and a sidewall with an inner surface defining a bore extending between the upper end and the lower end, the outer tubular member having at least one aperture extending therethrough in fluid communication with the bore;
• and
• an inner conduit having an upper end, a lower end, and a sidewall defining a bore extending between the upper end of the inner conduit and the lower end of the inner conduit, the upper end of the inner conduit connected to the tubing string and the outer tubular member with the inner conduit positioned in the outer tubular member to form an annulus and so the bore of the inner conduit is in fluid communication with tubing string, the lower end of the inner conduit being spaced a distance below the at least one aperture of the outer tubular member,
• wherein the bore of the inner conduit receives a fluid mixture that passes into the annulus formed between the inner conduit and the outer tubular member via the at least one aperture of the outer tubular member, the fluid mixture has a solids component and a liquid component, and
• wherein the at least one aperture of the outer tubular member is angled so the fluid mixture is directed tangentially into the outer tubular member along the inner surface of the outer tubular member to induce a cyclonic flow around at least a portion of the inner conduit, which causes the solids component of the fluid mixture to be forced outwardly and to fall to the lower end of the outer tubular member, the liquid component of the fluid mixture flows into the bore of the inner conduit via the lower end of the inner conduit so the liquid component of the fluid mixture travels up through the bore of the inner conduit and the tubing string.