Question

________ is formed by the consolidation of coarse particles of loose sand ?​

Answer 1

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sand consolidation

Answer 2

Answer: This may help you

Explanation:

The chemical sand consolidation process includes mixing the binding agent (cement slurry or phenolaldehyde resin, etc.), pore retaining agent (light oil), and supporting agent (rigid grains, such as quartz sand, walnut hull) uniformly in a specific proportion, squeezing the mixture outside the casing, and accumulating it at the sand production horizon. After setting, the mixture forms an artificial borehole wall with a specific strength and permeability, thus preventing the reservoir from producing sand, or the supporting agent is not added, the binding agent is squeezed directly into the sand producing reservoir outside the casing, and the unconsolidated sandstone is firmly consolidated, thus preventing the reservoir from producing sand. In accordance with the features of a thermal production well of heavy oil, a high-strength sand consolidating agent (Liaohe No.5) and high-temperature foam resin for controlling fine silt are obtained by testing and the artificial borehole wall sand control of the thermal production well is achieved and broadly applied in the Liaohe oil field, and good results have been obtained. In addition, the subsurface-synthesized phenolaldehyde resin sand control technique developed at the Shengli oil field and the fine silt control technique using the chemical sand consolidating agent formulated with polymer, etc., by the Canadian Alberta Research Center (ARC) have been applied successfully to sand control in oil fields.

Despite a sand control method, chemical sand consolidation has limitations of use. It is only applicable to the sand control of a single and thin bed of about 5 m thick and is not applicable to sand control of a thick bed and long well section.