NTS technology provides multi-stage tubing cleaning from asphalt resins and paraffins, corrosive and salt deposits. At the first stage is carried out tubing washing from asphalt resins and paraffins in an activator type washing installation or tubing cleaning in gas-dynamic steam installation by agreement with the Customer. Then external and interior surface of pipes undergo mechanical finish cleaning with metal brushes and roller cutters. Individual process operations are coupling thread and tubing nipple cleaning. Selectively, tubing high pressure water cleaning technology is used, that removes from the pipe surface almost all possible pollution, including solid scaling.
Tubing washing from asphalt resins and paraffins is performed automatically in a washing machine activator type. Cleaning is carried out by the thermodynamic effects of cleaning solution to asphalt resins and paraffins under the temperature of 80-90 ° C. Oil deposits heated to the melting point are removed by cleaning solution circulating in the bath.
Loading pipes in washing bath and unloading from it is carried out by beam crane. Delivery of dirty pipes to the shop for washing, as well as removal pipes from shop is carried out with packages using mechanized rail-guided cart.
In washing installation is used water recycling, detergent solution is cleaned by flotation and filtration equipment with coagulating agents. After washing, the inner and the outer tubing surface is acceptable the presence of hardened asphalt, resins and paraffins, loosened components of scale, rust no more than 1 mm thickness.
Tubing interior and exterior surface cleaning from asphalt, resins and paraffins at automated gas dynamic installation, produced by NTS-Leader, distinguishes high quality and performance. Gas dynamic installation provides rapid and uniform pipe heating to a temperature that ensures melting of asphalt, resins and paraffins but not enough for deflagration asphalt, resins and paraffins or change metal structure. Under influence of high-pressure aerodynamic flow of vapor-air mixture takes place peeling deposits, softened by temperature and partially melted from pipe walls and their removal. Gas dynamic installation design ensures the completeness of fuel combustion. In the quality of fuel can be used kerosene and casing-head gas. The resultant hydrocarbon vapors and residue of fuel combustion undergo multistage separation and absorption. Tubing gas-dynamic steam installation from asphalt, resins and paraffins corresponds to the highest environmental requirements - gas-dynamic installation emissions are below maximum permissible norms of maximum permissible discharges and maximum permissible limit.
Tubing gas-dynamic cleaning installation has been successfully operated in many pipe control shops since 2002.
Finish cleaning the tubing outer surface from soft sediments remains and scale is made by brushes. Finished machining tubing interior surface from asphalt, resins and paraffins residues, scale and rust is carried out by a special tool with roller cutters. The tool is fixed to the rod that is inserted into pipe hole with simultaneously blowing with compressed air. The tool is fixed to the rod that is inserted into pipe hole with simultaneously air-flushing. Clean air in the working zone is provided by cyclones and filtering elements.
Coupling thread and tubing nipple cleaning from loose rust, scale, cutting oil residues, metal chips is produced by brushes in the automatic mode.
Unique automated tubing high pressure water cleaning installation by extra-high pressure removes nearly any possible contamination usual for tubing: solid salt deposits, asphalt-resin-paraffins, old lacquer coating, rust. Return tubing, cleared from salt deposits to re-commissioning can reduce the the oil company costs for new pipes purchasing. Tubing high pressure water cleaning - is a highly efficient and environmentally friendly technology.