2008•China offshore Oil and GasRequires access
The development and application of concentric multi-barrel separated water injection technology for offshore oilfield
Cnooc Energy, Cnooc Lt
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Abstract
The offshore concentric multi-barrel separated water injection technology was developed according to the borehole situation of offshore water injection well completed with sand control and based on the application of onshore concentric multi-barrel separated water injection technology.The technology was applied successfully in five wells of BZ25-1S oilfield and got good effect offshore.The technology is fit for separated water injection no more than three layers,especially in such injection well with big injection pressure drawdown among layers and water injection regulator to be used difficultly,so that it has some spread value.