METHOD FOR REMOVING DEPOSITS FROM OIL-GATHERING PIPELINE Russian patent published in 2012 - IPC B08B9/02 E21B37/06 

FIELD: oil and gas industry.

SUBSTANCE: invention pertains to method for removing deposits from pipelines and can be used in oil and gas industry for cleaning oil-gathering pipelines from deposits with the help of solvents. Method consists in filling the pipeline with solvent, holding the time for deposits dissolving and start of pipeline operation. The finish of oil-gathering pipeline with deposits filling with solvent is defined by regular samples from sampling device at the end of the pipeline. The time necessary for deposits dissolving is divided by intervals and in each time interval the solvent is returned from pipeline into initial reservoir due to elastic energy of liquid-gas mixture in pipeline for evaluation of residual dissolving capacity of the solvent, and then it is again pumped into the pipeline. If necessary, the operation of productive wells connected to the oil-gathering pipeline after processed area is used for solvent reverse movement into the initial reservoir.

EFFECT: increase of chemical agents application efficiency and extension of oil-gathering pipelines service life.

2 cl, 2 dwg