DEVICE FOR PROTECTION OF WATER ENVIRONMENT AGAINST POLLUTION RESULTING FROM LEAKAGES OF PUMPED-OVER OIL PRODUCT FROM UNDERWATER PIPELINE Russian patent published in 2015 - IPC E02B15/06 F16L55/168 E21B43/01 

FIELD: oil and gas industry.

SUBSTANCE: device contains the flexible oil-tight cloth (OTC) covering a trench surface, a sleeve for pumping of the petroleum product (PP), loads. OTC is implemented in the form of extended dome the length of which is equal to the length of underwater pipeline (UP), the width is equal to the trench width in its upper part, the height is determined on the basis of the volume of PP flowing from UP during time of PT shutting and volume of the PP free flowing. The loads are rigidly connected to the ballasting devices installed on UP and arranged over the bottom surface above UP along the trench width in its top part. OTC is folded along UP axis so that its external surface along its outline with the help of sling is attached to loads with a possibility of detachment in case of signal of pressure inside GNP from UP PP leakage location. Slings are fitted with extension-operated leak sensors with a possibility of transmission to automatic shutting system of signals of leakage from UP. Sleeves for PP pumping are installed on OTC on boundaries of navigable part of the water medium, their free ends are fitted with float-operated devices for PP pumping and devices signalling on location of sleeves.

EFFECT: decrease of volumes of leaks into water medium of PP accidental releases and simplification of its pumping.

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