Mannesmann Line Pipe is supporting the industrial testing of cement-mortar-lined steel pipes for oil gathering and water injection lines in secondary oil production. Aggressive production fluids and high operating pressures place particular demands on corrosion protection and mechanical strength. In two pilot projects in Russia (2012) and Austria (2022), Mannesmann's system solution has proven its worth.
Resistant to Aggressive Media and High Operating Pressures
In secondary oil production, water is injected into the reservoir to maintain reservoir pressure and thereby boost production. This places heavy demands on the water injection and oil gathering lines used: oil-water mixtures with high degrees of mineralization, solid content and, in some cases, dissolved gases must be transported reliably under high pressure.
Mannesmann's Cost-Effective System Solution
For the pilot projects at a Siberian and an Austrian oil field, Mannesmann Line Pipe supplied a system solution consisting of HFI-welded steel pipes with cement mortar lining and plug-in welded sleeves, which can be joined and welded with little technical effort. The cement-mortar-lined sleeves ensure continuous corrosion protection along the entire pipeline. Mannesmann also contributed its application expertise on site – from support during laying to training of the local teams.
Load-Bearing Capacity Tested Under Extreme Conditions
In bending tests conducted with the University of Siegen, the pipe system was deliberately bent well beyond the loads expected in actual operation, at a test pressure of 400 bar. The tests confirmed the high mechanical strength: even under extreme conditions, the plug-in welded sleeve connections for the thick-walled pipes proved reliable.
The pipes have proven themselves under demanding operating conditions. An inspection after two years showed no signs of corrosion on the inner pipe surfaces. Pipelines made of pipes without internal corrosion protection would already have had to be replaced.
Dr. Juri Rosen | Product ManagerMannesmann Line Pipe
