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In
the petroleum extraction, oilwell paraffin removal
technique has been one of the challenges all the time.
Currently well cleanup with hot water is still the
main method of the paraffin removal in use.
But there are still many problems
such as bulky equipments, complicated technology,
high demanding conditions, and high cost. Moreover,
the pollution of the oil layer caused by it severely
influences the petroleum extraction. So the paraffin
removal technique without hot water flushing process
has become the task to be solved urgently.
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mechanic AOPC is just the equipment developed by the
patent inventor of our company, which can bring the
paraffin removal technique without hot water flushing
process into reality. |
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shuttle-like paraffin cleaner consists of some main
components such as the stepping reed, knife-equipped
body, the commutating tooth, and etc. Cooperating with
the lower commutator equipped on the paraffining section
of the oil pipe, it runs in this section back and forth
to perform the paraffin removal work. With commutating
tooth fixed in the circle groove, the cylinder-shaped
knife-equipped body has knife edges respectively on
both sides. The board-like stepping reed is equipped
between the knife edges. The paraffin cleaner is equipped
on the oil plug. Clamping the oil plug tightly, the
stepping reed transfers the stroke drive and makes the
paraffin cleaner run in one way, while the knife edges
scratch off the deposit on the internal wall of the
oil pipe at the same time. Tilting to one side, the
commutating tooth can clamp the pipe wall and force
the paraffin cleaner to run in one way. Then the reverse
stroke of the oil plug slides in the stepping reed and
cleans up the deposit on the oil plug. When the paraffin
cleaner moves into the commutator step by step, the
commutator tilts the trend, making the paraffin cleaner
move backward and continuously do the removal work in
cycles. There is another device called safety joint,
which is installed on the oil pipe under the lower commutator.
It has a absorbing cavity composed by ferromagnetic
blocks, which can prevent the chippings caused by attrition
and the magnetic articles in the steel family from falling
into the pump, and therefore prolongs the oil pump’s
working life. When the liquid in the well flows through
the strong magnetic field, this device can also improve
its physical property so as to be of great advantage
to the oil production. |
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