The Study Of Inject Polymeric Actinity Micro Ballons For EOR

Profile control is an importance measure of stable production and water control, through the formation sealing of high and especially high penetration, spread scope of the infusion fluid is extended, the invalid or low effect circulation of the infusion fluid is prevented, water content ratio is lowered, recovery ratio is enhanced. The EOR method of inject polymeric actinity micro balloons use underground residual polymer profile control is proposed through the method study of the remaining oil after polymer flooding and experimental analysis of the remains polymer flooding topography. The water content of polymer flooding follow-up water flooding climb fast, a great quantity of polymer in the form of colliquation, adsorb, capitation, remain in the formation. In order to solve this question adopt injection polymer micro balloons reutilization solvent so that underground residual polymer can be reutilization, formation poor frozen glue or flock plugging high permeability zone, control cross flow of the flood water, through enhanced conformance efficiency to enhanced oil recovery. Polymer micro balloons reutilization solvent have the characteristic of amoebae, the primary component of the profile control solvent is cationic amoebae and hackle cross linker, amoebae make low concentration polymer solution adsorb on the surface of amoebae form flock which block high permeable formation, at the same time the deformability of the amoebae make it access the deep formation achieve deep profile control. Hackle cross linker cross-linking reaction with sub layer polymer solution develop different resistance frozen glue system this formation sealing of the sub layer, so poor intensity frozen glue also make flow stream haul, effect the scraping remaining oil. The result of many times indoor sealing experiment which use polymeric blocking agent"amoeba"indicates that the sealing ratio of positive ion"amoeba"on core whose water permeability is between 0.5μm2 and 4.0μm2 is above 97%. The result of compound sealing experiment which use metal cross linking agent indicates that after the combination of metal cross linking agent and"amoeba"the availability of remains polymer is raised up and the sealing effectiveness is increased,this is an ideal dispensation of reuse polymer agent.Field experiment show that the effect of the polymer micro balloons profile control solution is well.