A fluid transfer system (100) comprising: a tubular member (4) comprising one or more openings (2) arranged along the length of the tubular member, wherein the tubular member is connectable to a pump (17) arranged to suck fluid from within or expel fluid to the tubular member； a receiving portion (3), the receiving portion comprising a passage (3a) for receiving the tubular member such that the tubular member fits within the passage and that the tubular member is free to rotate with respect to the receiving portion, wherein the receiving portion comprises one or more openings (1) arranged along the length of the receiving portion passage； and a first drive member (21) configured to rotate the tubular member with respect to the receiving portion； wherein the openings (2, 1) of the tubular member (4) and receiving portion (3) are arranged such that there is an at least partial overlap between the openings of the tubular member and receiving portion at a particular longitudinal location and at a particular relative rotational position between the tubular member and receiving portion, and that as the tubular member rotates with respect to the receiving portion the opening overlap moves along the length of the tubular member and receiving portion and fluid is sucked into the tubular member from , or expelled from the tubular member to, a region adjacent to the fluid transfer system at successive longitudinal locations.
