Artificial well wall sand control based on CMAS technologyand water control construction process thereof

Abstract

The invention belongs to the technical field of artificial well wall sand control, and particularly relates to an artificial well wall sand control based on a CMAS technology, a water control construction process thereof and a stirring device. The sand control is prepared from the following raw materials in parts by weight: 10-20 parts of calcium oxide, 20-30 parts of magnesium oxide, 8-10 parts of aluminum oxide, 30-40 parts of silicon dioxide, 5-7 parts of copper peroxide, 6-8 parts of borax powder, 4-6 parts of furnace slag, and 8-10 parts of fly ash. According to the technology, clean water or reinjection sewage is used for carrying a CMAS sand control agent to a well bottom oil layer deficit position, the CMAS sand control agent and a rock stratum are self-cemented and solidified to form a high-strength and high-permeability artificial rock stratum, sand migration is prevented, and oil layer collapse is prevented.

Description

technical field [0001] The invention belongs to the technical field of artificial well wall sand control, and in particular relates to the artificial well wall sand control based on CMAS technology, its water control construction technology and a stirring device. Background technique [0002] Sand control mechanism of artificial well wall: The basic principle of this technology is to apply resin and other additives on the surface of the sand inhibitor to form "resin pre-coated sand"; Solidify to form an artificial well wall with certain strength and permeability. The wellbore can keep stable for a long time under high temperature and high pressure, prevent formation sand from flowing into the bottom of the well, and realize artificial wellbore sand control. The selection of sand inhibitor particle size is the key to artificial wellbore sand control. particle size; make its median particle size D50 match the median particle size D50 of sand samples in the formation; realize ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide artificial well wall sand control and its water control construction technology and stirring device based on CMAS technology, which solves the need to prepare special carrying fluid in the technology, and the strength of artificial well wall is not high enough, the permeability is poor, and special solids are required. It also solves the problem that the discharge port of the stirring device is too high from the ground, which is easy to generate dust, and solves the problem of troublesome cleaning of the stirring device and low cleaning efficiency.

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