Lubricator with interchangeable ports

A lubricator, for receiving a plunger for a plunger lift system, comprising:

• an elongated, substantially cylindrical body having an outer surface, and an inner surface defining a bore longitudinally disposed within the body, the body having a flow port radially disposed through a wall of the body forming a passage allowing fluid to flow between the bore and the body's outer surface;
• a well head connection at a bottom end of the body for connecting a well head;
• a stem connection at a top end of the lubricator body for connecting to a stem portion of the plunger lift system above the wellhead and lubricator when installed;
• a substantially tubular external connector to attach external equipment to the lubricator providing a sealed passageway for fluid from the wellbore through the lubricator body's bore, through the flow port and through the external connector to the external equipment, the external connector being sealably attachable to the lubricator body's external wall via a clamp and seal system comprising:
• on the lubricator body's external surface adjacent and surrounding the flow port's passage, a substantially flat surface area to receive a static seal under compression by a mating portion of a first end of the external connector
• adjacent the flow port's passage outside of the static seal's compressed position a plurality of threaded bolt holes
• the static seal;
• in the external surface of the first end of the external connector proximate to but a distance from the mating portion of the first end, a plurality of ledges, each ledge having opposing, substantially parallel surface areas, the surface areas being surface substantially parallel to the flat surface area of the lubricator, and each ledge sized to receive a respective one of a plurality of clamp elements
• each of the respective clamp elements engaged with both the respective clamp element ledge and with one or more bolts threaded and tightened into one or more of the threaded bolt holes to compress the static seal
• at a second, opposite end of the external connector, a fitting connecting the external equipment to the external connector
• the clamp and seal system providing a removable and resealable connection between the flow port and the external connector, the clamp and seal system thereby allowing substitutions of the external connector with another external connector, at least when the lubricator is operably connected to the well-bore.