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Artificial borehole wall sand prevention and water control construction process based on CMAS technology

A technology of artificial well wall and construction technology, which is applied in the direction of drilling composition, wellbore/well parts, clean and flexible items, etc. It can solve the problems of poor permeability and insufficient strength of artificial well wall

Inactive Publication Date: 2021-05-18
孙波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 based on CMAS technology, which solves the need to prepare a special carrier fluid in the technology, and the strength of the artificial well wall is not high enough, the permeability is poor, and special consolidation conditions are required. question

Method used

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Embodiment Construction

[0044] The following is further described in detail through specific implementation methods:

[0045] This embodiment provides artificial borehole wall sand control based on CMAS technology, which is prepared from raw materials including the following parts by weight: 10-20 parts of calcium oxide, 20-30 parts of magnesium oxide, 8-10 parts of aluminum oxide, silicon dioxide 30-40 parts, copper peroxide 5-7 parts, borax powder 6-8 parts, slag 4-6 parts, fly ash 8-10 parts.

[0046] The artificial well wall sand control and water control construction technology based on CMAS technology includes the following steps:

[0047] Step 1. Construction preparation:

[0048] (1) Prepare 40m³ of sand-carrying fluid, which is composed of artificial borehole wall sand control and water based on CMAS technology;

[0049] (2) 5-6 tons of high-temperature artificial well wall sand control agent (according to the field construction experience, divide the thickness of the oil layer by dividing...

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Abstract

The invention belongs to the technical field of artificial borehole wall sand prevention, and particularly relates to an artificial borehole wall sand prevention based on a CMAS technology, which 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 the 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 artificial well wall sand control and water control construction technology based on CMAS technology. 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 the purpose of artificial b...

Claims

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Application Information

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IPC IPC(8): C04B28/10C09K8/57E21B33/13
CPCC04B28/10C09K8/572E21B33/13C04B2111/00732B08B11/00C04B22/066C04B14/303C04B14/06C04B22/068C04B22/0013C04B18/10C04B18/08
Inventor 孙波方贺
Owner 孙波
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