1. rhesus factor-a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia. Rh, Rh factor.. rhesus factor-a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia. Rh, Rh factor.
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Swabbing Unit. Swabbing is a process to remove liquids from the production zone of a gas or oil well. Gas and oil wells produce fluid over the life of a well. When a well is first drilled it is usually Fracked to help open production zones. Fracking can include water. After fracking the liquids are recovered by swabbing the well. As liquids are lifted to relieve the hydrostatic weight from the producing formation the bottom-hole pressure pushes the gas and/or oil up and out of the well.