Oil-water well chemical resin type sand consolidating agent and sand prevention technology

Abstract

The invention relates to an oil-water well chemical resin type sand consolidating agent and a sand prevention technology. The technology formula includes: 5 percent to 10 percent of organic silicon resin, 15 percent to 20 percent of dispersant (furfural), 10 percent to 15 percent of mutual solvent (acetaldehyde), 10 percent to 15 percent of curing agent (metaphosphoric acid), 15 percent to 20 percent of emulsion splitter, 15 percent to 20 percent of aniline modified phenol formaldehyde resin, 25 percent to 30 percent of hydrochloric acid, 5 percent to 10 percent of trolamine, 5 percent to 10 percent of aluminium sulphate, and 5 percent to 10 percent of OP10. The technology includes: washing sand to the required position of design, putting sand in an operating tool string according to design requirements, pre-processing the oil layer, then selecting a positive-substitute resin type sand consolidating agent for squeezing the resin type sand consolidating agent and displacing liquid, lifting the sand out from the operating tool string after pressure naturally diffuses, and finally coming to well completion after 72 hours of coagulation.

Description

1. Technical field:

[0001] The utility model relates to a fixing and sand control treatment for oil and water wells producing sand, in particular to a chemical resin type sand fixing agent and sand control technology for oil and water wells. 2. Background technology:

[0002] In the development of unconsolidated sandstone reservoirs, the phenomenon of sand production in oil and water wells is very common and the hazards are serious: Casing deformation and misalignment cause oil wells to be scrapped; pump jams cause pipe rods to bend, and oil wells stop production; Insufficient liquid, the well can not inject water. Sand production in the formation prevents the normal production of oil and water wells, which has become an important factor restricting the improvement of oilfield development level. At present, the treatment methods for sand production in oil and water wells mainly include laser slotting (wire-wrapped screen) gravel packing sand control technology by physical m...

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