High-rheology continuous-phase profile control and flooding agent and preparation method thereof

Abstract

The invention relates to a high-rheology continuous-phase profile control and flooding agent and a preparation method thereof. The preparation method comprises preparing water-phase substances comprising C=C double-bond substances and double-helix structure substances; preparing an oil-phase substance which comprises a sulfonic acid group substance; adding the water-phase substances and the oil-phase substance into a high-rotating-speed reactor, stirring and mixing the water-phase substances and the oil-phase substance. A stirrer, a first temperature sensor, a first humidity sensor, a first timer and a first temperature control device are arranged in the high-rotating-speed reactor. A swept area matrix is further arranged in a central control unit, the central control unit is used for adjusting the drying temperature and the drying duration of a drying machine according to the swept area in the swept area matrix so as to adjust the humidity of the profile control and flooding agent, and by controlling the humidity of the profile control and flooding agent, the preparation of the profile control and flooding agents with different humidities and the preparation of the profile control and flooding agents with different swept areas are achieved, so that the preparation efficiency of the profile control and flooding agent is higher.

Description

technical field [0001] The invention relates to the field of oilfield development, in particular to a high-rheology continuous phase-modulating flooding agent and a preparation method thereof. Background technique [0002] In the process of oilfield development, oil-water separation needs to be carried out in the oilfield. Water plugging and profile control technology has always been an effective means for oilfields to improve the development effect of water injection oilfields and achieve stable production of oil reservoirs. The geological conditions of domestic oil fields should be different. There are many methods of tertiary oil recovery, such as chemical, polymer, thermal, etc., but for a certain oil field, all methods should not be used. Each oil field should be considered according to its own geology and various factors. To choose the tertiary oil recovery method, and then increase the oil recovery rate and increase the output of the oil field. [0003] For the metho...

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Problems solved by technology

[0004] However, in the process of preparing the drive control agent, the polymerization process of the polymer is not stable, so that the molecular structure and degree of polymerization will be uncontrollable in both homopolymerization and copolymerization, and the salt resistance and shear resistance of the drive control agent , antibacterial performance, washing performance, and rheological performance cannot be taken into account, and the cost is high. The gelation time of the control and displacement agent is short, and the formation is greatly affected by shear adsorption after gelation, resulting in low oil recovery efficiency.

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