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

A technology of resin type and sand consolidating agent, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve problems such as oil and water well damage, and achieve high permeability effect

Inactive Publication Date: 2009-09-02
覃忠校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a chemical resin sand-fixing agent and sand control technology for oil and water wells, so as to solve the problem of damage to oil and water wells due to sand production

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

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Embodiment Construction

[0016] In order to further disclose the technical solutions of the present invention, the following will be described in detail through the embodiments in conjunction with the accompanying drawings:

[0017] The sand-consolidating agent formula of the present invention is the improvement carried out aiming at the sand control agent currently used in oil-water wells, and the percentages by weight of various medicament formulas are: organic silicon resin 5-10%, dispersant (furfural) 15-20%, mutual solvent (Acetaldehyde) 10-15%, curing agent (metaphosphoric acid) 10-15%, demulsifier 15-20%, aniline modified phenolic resin 15-20%, hydrochloric acid 25-30%, triethanolamine 5-10%, Aluminum sulfate 5-10%, OP10: 5-10%.

[0018] The sand control method is implemented as shown in the block diagram:

[0019] 1——Select a well with good liquid supply capacity and good permeability, and wash the sand to the position required by the design;

[0020] 2——Launch the construction string accord...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/575
Inventor 覃忠校赵明宸赵彧
Owner 覃忠校
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