Two-phase multi-material online injection water-plugging profile regulating method and equipment

Abstract

The invention relates to a two-phase multi-material online injection water-plugging profile regulating method and equipment. Liquid or solid-liquid mixed phase fluid is pumped by a self-sucking pump from a liquid storage tank, is conveyed to a high-pressure plunger pump and is injected into a high-pressure water-injecting pipeline after being pressurized; solid powders or small particles fall from a hopper under the action of the gravity and the vibrating force, and are sucked by negative pressure and mixed with jet flow; high-flow-velocity fluid carries the solid materials to enter a buffer tank; when the liquid level of the buffer tank is lower than the preset value, a liquid level controller sends out a signal to open an electromagnetic valve and supplement water to the buffer tank; when the liquid level reaches the highest position of the preset liquid level, the liquid level controller sends out a signal to close an electromagnetic valve and stopping water supplement to the buffer tank; and the powdery materials and the small particle materials are mixed with water and then enter the self-sucking pump respectively through a pipeline I with a static mixer or a pipeline II without the static mixer, and are injected into the high-pressure water-injecting pipeline after being pressurized by the high-pressure plunger pump. In the method, a solid-phase, liquid-phase or solid-liquid mixed phase water-plugging profile regulating agent can be injected into the high-pressure water-injecting pipeline in an online manner.

Description

technical field [0001] The invention relates to a two-phase multi-material online injection water blocking profile control method and equipment for directly injecting a water blocking profile control agent or a deep displacement control agent into a water injection pipeline. Background technique [0002] Most of the oilfields in my country adopt the water injection development method. In the later stage of development, the comprehensive water content rises rapidly, and the oilfields in eastern my country have entered the stage of high water content and ultra-high water production, with the comprehensive water content as high as 83%, and the output with water content greater than 80% accounts for 74% of the total output. Water plugging and profile control and deep profile control (regulation and flooding) are important means to control water and stabilize production (increase production) in high water-cut oilfields. [0003] At present, the construction of water plugging pro...

AI Technical Summary

Problems solved by technology

This kind of construction operation has: ① heavy preparation work before injection, ② huge injection equipment and facilities, ③ heavy injection workload, ④ high energy consumption, ⑤ inaccurate measurement during injection, ⑥ difficult control of injection volume, ⑦ injection mechanism Inability to adjust flexibly

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