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With the exploitation of oil fields, oil wells water content increases, the decline has become one of the very common problem, and the the Daqing Oilfield vast majority block has entered the high water cut, especially in the second, three types of reservoir, formation waterflood residual oil reserves still very rich, and therefore carry the waterflood enhanced oil recovery technology to ensure significant oil and gas production. Poly table agent both the high viscosity characteristics of the polymer and the surface active agent is the dual characteristics of the surface-active, and thus having a good emulsifying and dispersing ability, strong tackifier, flocculation, in oilfield applications in recent years been more fast development, has become an important technical measures to enhance oil recovery after polymer flooding, is one of the effective ways to solve the high water content, low production in Daqing Oil Production Plant, Wuchang, eight plants, plant have more successful field test reported. For blocks with poor reservoir properties, the structure of poly table agent also needs to be improved to make it more perfect performance, Fuyang reservoir of low permeability sandstone geological features from static and dynamic comparative evaluation refining, Haibo kinds of poly the table agent physical and chemical properties of the pros and cons, good or bad flooding effects and dynamic stranded differences, so that preferred a more reasonable way of contribution, specific research contents are as follows: 1 static aspects of research and analysis of three different concentrations (800 mg / L, 1000mg / L, 1500mg / L) refining, Haibo poly the table agent solution viscosity characteristics (viscosity stability, salt shear resistance), viscoelastic properties and emulsifying properties compared with ordinary carve polymer, the results show that : In addition to poor salt tolerance (but still stronger than the polymer), the Haibo poly table agent performance are superior refining poly table agent, polymer worst. 2 dynamic aspects of the first through the resistance coefficient and residual resistance factor evaluation of the performance of two different concentrations of poly table agent solution flow in porous media; Second, the combination of poly table agent solution physicochemical current performance analysis studies investigated the concentration and slug its drive effect of the oil, and ultimately determine the concentration of 1000mg / L Haibo poly table agent solution flooding is the most cost-effective, appropriate size of the slug 0.7PV oil recovery increased up to 17% -19% ; Finally, in the process of injecting different solution concentrations and different slug size polylactic table agent flooding, contrast difference of two poly table agent in the formation of dynamic retention.
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