Separator for separating constituents of well fluid, method therfor and system for separating constituents of well fluid

A separator for separating constituents of well fluid produced by a well, the separator comprising:

• a vessel for receiving well fluid such that a first fluid constituent overlies a second fluid constituent within the vessel and an interface region is disposed at a fluid interface between the first fluid constituent and the second fluid constituent;
• a collection pipe having an opening for collecting the first fluid constituent from the vessel;
• and
• a positioner having a rotational axis and a coupling configured to rotationally translate the positioner about the rotational axis;
• wherein the collection pipe is connected to the positioner and extends outwardly from the rotational axis, such that rotating the positioner about its rotational axis changes a height of the opening within well fluid in the vessel;
• and
• wherein the coupling is configured to rotationally translate the positioner about the rotational axis such that the collection pipe has a positive angle relative to the positioner.