The Injection Well Profile Technological Research And Application Of Steam Flooding In Jin-45 Block

Steam drive has been uneven steam injection well suck, failure of high water cut, sanding, high hydrogen sulfide with the popularization and application of steam drive in Jin-45 block. Main show is the restriction of the blocks of different permeability, Large amount of high permeable zone of inspiratory and low permeable layer suction quantity is little caused the whole inspiratory inequality, low and medium permeable layer not be effectively displacement. Single steam injection process, caused by the effect well high temperature make conventional pump cannot normal production and sand production speed, affect the normal production of oil Wells. Therefore, it is necessary to adapt to the study in steam flooding injection well profile control technique, solve the problem of uneven steam flooding injection well inspiratory, improve the effect of steam flooding.According to different interlayer problem, according to the plugging, plugging, displacement of three ideas, develop suitable for steam flooding of heavy oil reservoir profile control technology of injection well. In combination with the practical situation of steam flooding injection well and profile control strategy is put forward, through a large number of experimental studies, developed for jinzhou production plant steam flooding of three kinds of gel type profile formula, a new type of high gel strength- particle distribution profile control system; Through indoor evaluation, developed the heat-resistant up to 280 ℃, steam erosion resistant ability of the formula, meet the steam flooding injection well used; Through physical simulation experiment and numerical simulation research combined with simulation of injection well profile control technology, the optimization of the injection well profile in all kinds of parameters, and determine the injection well steam flooding injection profile control system method and construction technology. Through three profile control ideas, solve the production well steam channeling, reservoir plane using comprehensive problems such as uneven, small steam sweep range, formed a set of more perfect injection steam flooding well profile control technology.