Device for cathodic protection of casing strings of wells and oilfield pipelines against corrosion

摘要

The proposal relates to the oil industry, namely to devices for protecting casing strings of wells and oilfield pipelines from ground corrosion.;The device for cathodic protection of casing strings of wells and oilfield pipelines from corrosion includes an anode earthing device located in the drill of a drilled hole with a clay solution and conductive colmatizing composition, a cathodic protection station - a RMS connected to create a protective current by an anode cable with anode earthing switches, and a cathode cable each of the casing strings of the wells. Shafts are located at a design distance from casing wells. VHC common cathode cable is connected in parallel with each of the casing strings of the wells, and a common anode cable - in parallel with each anode earth.;The proposed device for cathodic protection of casing strings of wells and oilfield pipelines from corrosion makes it possible to simplify construction and maintenance by using only one cathode cable and one anodic cable that connect all protection objects and anode earths, respectively, piers for which are built in an amount sufficient to protect all objects. 1 yl.