A New Type of Hydraulic Jet Blocking Removal Device

Abstract

The invention belongs to the technical field of oil and water well casing descaling, and in particular relates to a new type of hydraulic jet blocking removal device. The invention provides a new type of hydraulic jet blocking removal device, which includes a filter, a short pipe, a cylinder, a motor, and a reciprocating mechanism The filter and the cylinder are fixedly connected to the upper and lower ends of the short tube respectively. The motor is fixedly installed in the cylinder through a motor bracket. The power input end of the reciprocating mechanism is connected to the output shaft of the motor. The power of the reciprocating mechanism The output end is fixedly connected with the rotating disc. The invention provides a brand-new way of descaling and blocking removal. Compared with the prior art, the construction process is simple, the construction cost is low, and the treatment depth is large. At the same time, by spraying the emulsifier by rotation, the jet of the emulsifier impacts the scale on the inner wall of the casing from radial and tangential directions, so that the scale is easier to remove and effectively improves the descaling effect.

Description

technical field [0001] The invention belongs to the technical field of descaling of oil and water well casings, and in particular relates to a novel hydraulic jet plugging removal device. Background technique [0002] Pollution and mechanical impurity precipitation in the process of drilling, well completion, downhole operation, long-term oil recovery and water injection, and deposition of drilling fluid and bituminous colloidal salts make the pore channel blockage in the near wellbore area very serious; some heavy oil wells Long-term exploitation leads to a decrease in the content of light components and an increase in the content of heavy components in crude oil, resulting in a significant increase in the viscosity of crude oil; heavy oil and dirt in the wellbore and near the wellbore are very easy to block the borehole and reservoir channels. The level of cleaning and plugging removal determines the effect of oilfield development, and also determines the length of oilfiel...

AI Technical Summary

Problems solved by technology

For example, the construction is complex, the cost is high, the physical effect is single, limited by the downhole conditions, the energy generated is limited, and the treatment depth is small, etc.

When the oilfield enters the middle and late stage of development, due to water injection and other storage factors, the perforated blastholes of the oil and water wells and the pore channels in the near wellbore area are relatively easy to block, which leads to the production reduction of the oil well and the decrease of the water absorption of the water well, which greatly affects the oilfield. development level

[0004] When the oilfield enters the middle and late stage of development, due to water injection and other storage factors, the perforated blastholes of the oil and water wells and the pore channels in the near wellbore area are relatively easy to block, which leads to the production reduction of the oil well and the decrease of the water absorption of the water well, which greatly affects the oilfield. development level

These bad conditions inevitably lead to a decrease in the permeability of the near-wellbore area, resulting in a decrease in oil production and water injection or even a shutdown

However, ordinary pickling and other measures can only solve the pollution problem of the wellbore and the limited distance around the wellbore

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