The invention relates to a method for
processing oil-bearing mud, which comprises the following steps: firstly, mixing and stirring oil-bearing mud and right amount of water in a
washer under the condition of heating, stewing, separating out
oil phase and a first
sludge layer, secondly, stirring in a middle tank,
heating oil phase from the
washer, stewing, and then discharging water and
sludge on the lower portion, keeping
oil phase on the upper portion, thirdly, finely separating
oil phase which is kept in the middle tank in a centrifugal
machine through a centrifugal effect, discharging oil phase which is separated into an
oil storage tank, fourthly, stewing oil products which is from the centrifugal
machine after
dewatering and desliming in the
oil storage tank, and getting
recovery oil, fifthly, cavitating first mud residue from the
washer in a mud residue processor, stripping
residual oil in the first mud residue, and discharging oil phase on the upper portion of the mud residue processor into the middle tank. The invention also relates to a
system which utilizes the method to process oil-bearing mud. Oil-bearing rate of oil-bearing mud which is processed by the method and the
system of the invention is below 4%.