Gas-liquid dual-kinetic-energy negative pressure injection device with circulation function

Abstract

The invention relates to a gas-liquid dual-kinetic-energy negative pressure injection device with the circulation function. The gas-liquid dual-kinetic-energy negative pressure injection device is characterized in that a stratum rotating nozzle is connected to one end of a coiled tube and a high-pressure pump is connected to the other end of the coiled tube. Liquid in a liquid feeding pool is injected into the stratum through the coiled tube by the high-pressure pump. The upper end of a tornado generator is connected at a central negative pressure chamber of the coiled tube; a pneumatic suspension feeding box is connected to the lower end of the tornado generator; and an air compressor is connected to the lower side of the tornado generator. The upper end of the tornado generator is connected with a gas circulation pipe; and the gas circulation pipe is connected to the pneumatic suspension feeding box through a check valve. The gas-liquid dual-kinetic-energy negative pressure injectiondevice has the following beneficial effects: the tornado generator is connected to the negative pressure chamber of the coiled tube and particle-like drugs are driven to move upwardly along a negative pressure injection tube because of the large suction of the tornado generated by the tornado generator, so that gas-liquid dual-kinetic-energy negative pressure injection is realized and a problem of transporting of most of drugs is solved. The injection effect is improved; and the recycling of the tornado is realized.

Description

technical field [0001] The invention relates to a formation energy replenishment device and method, in particular to a gas-liquid double kinetic energy negative pressure injection device with circulation function. Background technique [0002] In the process of oil extraction, due to the complex geological structure, it is necessary to inject some chemicals into the formation to increase oil production. Added chemicals such as: cross-linking agent, foaming agent, water shutoff agent, plugging agent, expansion agent, etc., these Some pharmaceutical materials are in the form of flocculents and tiny particles, most of which are harmful to the human body; in addition, some are viscous, and some are in the form of solid particles; , uniform addition method. At present, a mixer is generally used to stir, and the pressure pump is used to inject it into the corresponding position of the formation along the injection pipeline. The existing problems are: first, the mixing is not unif...

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Problems solved by technology

[0002] In the process of oil extraction, due to the complex geological structure, it is necessary to inject some chemicals into the formation to increase oil production. Added chemicals such as: cross-linking agent, foaming agent, water shutoff agent, plugging agent, expansion agent, etc., these Some pharmaceutical materials are in the form of flocculents and tiny particles, most of which are harmful to the human body; in addition, some are viscous, and some are in the form of solid particles; The uniform addition method

At present, a mixer is generally used to stir, and the pressure pump is used to inject it into the corresponding position of the formation along the injection pipeline. The existing problems are: first, the mixing is not uniform, which is easy to cause blockage to the pipeline; second, the flocs are easy to float and pollute the environment; The 3rd, most injected medicaments are poisonous, easily cause bodily injury to operator;

The problem is that only the high-pressure liquid passes through the nozzle to generate negative pressure, and the medicine that needs to be added is sucked away. The self-absorption ability is limited, and the medicine in the form of flocculent and tiny particles can meet the requirements. However, when encountering solid granular liquid of the medicament, there is no ability to suck it into the injection line, so the device has certain limitations in use

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