FIELD: construction.
SUBSTANCE: invention relates to pipeline transport, in particular to method for cleaning of inner surface of field pipelines from asphalt-resinous and paraffin deposits (ARPD) created in process of operation as oil and oil-gas mixtures are transported along pipelines. Method includes cleaning device insertion into cleaned cavity of pipeline, providing for damage and separation of deposits from surface of pipeline, supply of working agent under pressure and further removal of deposits from cleaning zone. Deposits are removed as they are accumulated in front of cleaning device serially, at the same time working agent pumping is previously stopped, plunger is mounted at the distance from location of cleaning device, linear gate valve installed downstream plunger is closed, and process pipeline is connected to the latter and to oil tank truck reservoir, then pumping is recommenced. Deposits from zone of cleaning are displaced into reservoir of oil tank truck until working agent appears. Location of moving cleaning device is identified by signals of transmitter installed on cleaning device.
EFFECT: invention provides for safe operation, simplification of method and improved ecological compatibility.
1 dwg
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