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Unconventional Composite Plugging Removal Of Water Injection Wells Technology
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Overview

The neutral softening scale remover is used to gradually soften the hard scales such as calcium carbonate and calcium sulfate through electrostatic adsorption, lattice distortion and dispersion. The softened scale can be removed under the condition of washing with water.

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This technology does not damage the formation skeleton, and repairs and improves on the basis of the original pore channel. It only removes the scale of the blocked formation and the structure of the core surface layer, and does not form secondary precipitation.It can effectively solve the problem of production fluctuation and decline caused by various organic and inorganic blockages in oil and gas wells. Under the premise of completely protecting the reservoir, effective blockage removal and dredging can be carried out to produce good production increase effect.


It is an effective technology for long-term stable and high production of oil and gas wells.It is suitable for the removal of hard scale such as calcium carbonate and calcium sulfate in wellbore, pipeline and formation, especially for acid sensitive formation.
Neutral softening detergent PH value is neutral, non acid and non-alkali, no harm to the human body, and the operation is simple, small corrosion to the equipment, safe operation, environmental protection.
1.At present, more than 100 wells have been constructed in PetroChina. The success rate of construction is high, the plugging removal effect is remarkable, and the injection volume increases significantly after treatment. After the operation, the flowback fluid is neutral, easy to be biodegraded and easy to be treated.
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