Chemical Water Plugging Agent Optimization Research Of High Water Cut Oil Well For Low Permeability Reservoir

With the oilfield has entered high water cut or extra high water cut development period, oil field water flooding problems become more and more complex, the crack extends to the depths of the plugging agent reservoir, conditions of ground water is not accurate, plugging agent placement has become a problem. Therefore, in conventional chemical plugging water technology development up composite profile control and water shutoff technology to improve the plugging agent of temperature resistance and salt resistance, selective water plugging technology in the outlet position is not clear well selective water plugging technology, can reduce the water content at the same time, as far as possible to reduce the effect on oil production. In this paper the comprehensive adjustment profile modification agent laboratory study, field test and its effect to the low permeability reservoir of water plugging and profile control optimization and improvement. The main research of the composite profile control and water plugging agent and selective water plugging agent, we got the following results and conclusions:(1) the best formula of associating polymer AP-P4/organic phenolic system into HPAM/and organic phenolic system the best formula;(2) two compound plugging agent system with similar properties, the indoor experimental EOR proportion similar, meet the need of construction;(3) SSA selective plugging agent and HSWO selective plugging agent is compared, the former gel strength flood phase, oil phase closure rates are relatively high;(4) the TLS-6Super Absorbent Resin Plugging Agent with deformation characteristics and mobility, not easy to shear fracture, selective access to the ability of high permeability layer, is conducive to reducing the treatment agent on the non objective layer damage;(5) determine the horizontal well water plugging slug.