Composite bio-enzyme preparation for unblocking oil-water well and use method of composite bio-enzyme preparation

Abstract

The invention discloses a composite bio-enzyme preparation for unblocking an oil-water well and a use method thereof. The composite bio-enzyme preparation comprises an agent A and an agent B. The agent A is a composite biological acid; the agent A is composed of an A1 organic ester mixture and an A2 biological acid main agent; the A1 organic ester mixture accounts for 10%, the A2 biological acid main agent accounts for 15%, and the balance is water; and the agent B is a composite biological enzyme preparation, and the agent B is composed of a biological enzyme and a biological surfactant. The above composite degradation agent is a composite bio-enzyme degradation agent, can generate organic acid salt with inorganic scales and other blockages, has high solubility, thoroughly relieves the blockages caused by the inorganic scales, and can effectively relieve various complex blockages of a water well by adjusting the compound components of the product and the proportions of the components. The problem that a traditional acidification method is difficult to go deep into the stratum is solved, and meanwhile the problems that construction safety risks are high, construction technology is complex, oxygen transportation and storage dangerousness is large, and corrosion to equipment is high are solved.

Description

technical field [0001] The invention relates to the technical field of biological preparations, in particular to a composite biological enzyme preparation for unblocking oil-water wells and a usage method. Background technique [0002] Due to the influence of geology, engineering, and drainage factors, there are bacteria, polymers, and acid-insoluble substances in pipelines and formations that are clogged, resulting in low production of some oil and gas wells, rapid production decline, and water wells that cannot meet the injection requirements, making oil and gas wells Production and well water injection cannot achieve the expected results. With the process of oilfield exploration and development, various measures such as drilling and completion, well cementing, fracturing, and water injection will cause damage to the oil layer. About half of the low-production and low-efficiency wells are Caused by pollution and blockage near the bottom of the well. [0003] To solve this...

AI Technical Summary

Problems solved by technology

Acidizing method is to use hydrochloric acid, soil acid, polyhydric acid, foam acid, thickened acid, emulsified acid and other acidizing technologies to remove plugging in water wells, but the traditional acidizing method can only be used in the near wellbore area, and the treatment radius is small, so it is difficult to penetrate deeply. Formation, low permeability and serious blockage layer, acid liquid cannot enter, and the various acids used in the acidification method are highly corrosive, causing serious problems such as excessive dissolution near the wellbore and corrosion of the production casing; while the oxidation method also has construction safety. High risk, complex construction process, high risk of oxygen transportation and storage, and strong corrosion to equipment

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