A combined control and flooding process of jelly and intralayer gas

Abstract

The invention discloses a combination control and flooding process of jelly and intralayer gas generation: optimize the formula of the jelly system, the formula of the intralayer gas system and the combination scheme of on-site injection of gas gel suitable for the target oil field; determine the required liquid storage tank and injection The number of pumps, connect the liquid storage tank and injection pump containing the medicament to the injection water process; inject the component slug of the high-viscosity jelly system; inject the component slug of the low-viscosity jelly system to achieve high viscosity of the gel and freeze Glue low-viscosity slug combination; inject the gas system component slug in the layer to realize the combination of gas and jelly in the layer; repeat the above to realize the combination of gas in the layer and multi-slug of jelly, , forming a "glue bubble"; injecting a high-viscosity jelly system component slug. The present invention aims at how to inject each component in the combined control and flooding system of jelly and intralayer gas in order to give full play to the functions of each component, and to show that the functions of each component are combined, the function is enhanced, and the combined effect is increased. effective effect.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and more specifically relates to a combined regulating and flooding process of jelly and intralayer gas. Background technique [0002] In the process of oil field development, due to the strong heterogeneity of the reservoir, the high viscosity of crude oil, and the large water-oil mobility ratio, the injected water in the reservoir is prone to fingering and channeling of injected water during the water flooding process. , causing the water cut of the oil well to rise and affecting the development effect. At present, the technical countermeasures to improve this phenomenon include: weak jelly control and flooding, nitrogen foam control and flooding, nano-microspheres and other control and flooding technologies. These technologies can improve reservoir development effects to varying degrees. From the analysis of their field application effects, the above-mentioned control and flood...

AI Technical Summary

Problems solved by technology

These technologies can improve reservoir development effects to varying degrees. From the analysis of their field application effects, the above-mentioned control and flooding systems have certain limitations to varying degrees: some control and flooding systems have weak plugging strength, and some The system is difficult to inject, cannot migrate deep into the formation, some control and drive systems have limited radius of action, some control and drive systems have poor stability, and some control and drive systems can only adapt to medium and low permeability oil layers; most of the above control and drive systems are single systems , each has its own emphasis on plugging strength, improvement of mobility ratio and deep migration, etc., and the effect of control and flooding is not good

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