High-temperature magnesium oxychloride thermosetting resin gel system as well as solidified body and preparation method of system

A magnesium oxychloride thermosetting and epoxy resin curing technology, applied in the field of oil and gas well cementing, can solve the problems of inability to achieve performance control, failure to achieve bonding, etc., achieve controllable curing time, solve easily damaged, and meet cementing requirements. The effect of construction conditions

Inactive Publication Date: 2018-04-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN105367036A discloses a low-temperature magnesium oxychloride cement and its preparation method, wherein the disclosed magnesium oxychloride cement and thermosetting resin are only suitable for the construction industry, coating industry, etc., and are used alone, without realizing the combination of both Combination, let alone the performance control technology after the combination of the two

Method used

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  • High-temperature magnesium oxychloride thermosetting resin gel system as well as solidified body and preparation method of system
  • High-temperature magnesium oxychloride thermosetting resin gel system as well as solidified body and preparation method of system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Weigh 300g of light-burned magnesia (MgO, Hebei Xingtai Meishen Chemical Co., Ltd.), 300g of magnesium chloride (MgCl 2 , Shandong Zibo Huayan Chemical Co., Ltd.), polyvinyl alcohol fluid loss reducer 6g (FSAM, Shandong Dezhou Continental Shelf Auxiliary Factory), polyphosphate medium temperature coagulant 30g (NP2, Shandong Dezhou Continental Shelf Auxiliary Factory), EDTA salt chelating agent 15g (NP3, Shandong Dezhou Continental Shelf Auxiliary Factory, EDTA calcium salt), silicone oil defoamer 1.5g (DZX, Shandong Dezhou Continental Shelf Auxiliary Factory), glycidylamine type epoxy resin emulsion 60g (RS, Shandong Dezhou Continental Shelf Auxiliary Factory), epoxy resin amine curing agent 30g (RSC, Shandong Dezhou Continental Shelf Auxiliary Factory), fresh water 135g.

[0019] (2) The mixture of magnesium chloride, glycidyl amine type epoxy resin emulsion, epoxy resin amine curing agent, silicone oil defoamer, polyphosphate medium temperature coagulant and EDTA...

Embodiment 2～5

[0030] Change the amount of polyphosphate medium temperature coagulant to 15g, 24g, 30g, 45g respectively, and at the same time change the amount of EDTA salt chelating agent to 9g, 9g, 9g, 15g respectively. The amount and steps of other components All are the same as steps (1) to (3) of Example 1 to prepare a high-temperature magnesium oxychloride thermosetting resin gelling system.

[0031] The high-temperature magnesium oxychloride thermosetting resin gelling system obtained in Examples 2-5 was tested for thickening time according to the main performance test method of GB / T19139-2012 cement slurry, and the results are shown in Table 3.

[0032] Table 3 Thickening time of high temperature magnesium oxychloride thermosetting resin gelling system with different dosage of coagulation regulator

[0033] formula

[0034] It can be seen from Table 3 that with the increase of the amount of coagulation regulator, the thickening time of the high-temperature magnesium oxychl...

Embodiment 6～8

[0036] Change the consumption of glycidylamine type epoxy resin emulsion into 15g, 30g, 45g respectively, the consumption and steps of other components are all identical with the step (1)~(3) of embodiment 1, make high temperature magnesium oxychloride heat Solid resin gelling system.

[0037] The elastic modulus of the high-temperature magnesium oxychloride thermosetting resin gelling system in Example 1 and Examples 6-8 was tested according to the main performance test method of Q / SH 0275.1-2009 cement slurry. The results are shown in Table 4 below.

[0038] Table 4 Cured elastic modulus of high temperature magnesium oxychloride thermosetting resin gelling system with different epoxy resin additions

[0039] formula

[0040] It can be seen from Table 4 that the indoor test shows that the cured body of the high-temperature magnesium oxychloride thermosetting resin gelling system has a lower elastic modulus, and as the amount of epoxy resin increases, the elastic mod...

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Abstract

The invention relates to the field of oil and gas well cementing, and relates to a high-temperature magnesium oxychloride thermosetting resin gel system as well as a solidified body and preparation method of the system. The high-temperature magnesium oxychloride thermosetting resin gel system comprises an epoxy resin emulsion, an epoxy resin curing agent, a magnesium oxychloride skeleton materialand a high-temperature adjustable solidification agent, wherein the epoxy resin emulsion is at least one selected from the group consisting of glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, cycloaliphatic type epoxy resin, glycidyl amine type epoxy resin, and linear aliphatic type epoxy resin; and the epoxy resin curing agent is at least one selected from the group consisting ofan anhydride, a carboxylic acid, an amine compound, a phenol compound, and a polyhydric alcohol. The high-temperature magnesium oxychloride thermosetting resin gel system provided by the invention can be cross-linked and cured to form an organic polymer material with a three-dimensional net-shaped structure under the conditions of heating, pressing and the like, and realizes annulus long-term sealing performance of cementing cement in the high-temperature environment of 90-120 DEG C relying on the advantages of excellent heat resistance, good compressive strength and toughness, excellent adhesion and the like.

Description

technical field [0001] The invention relates to the field of oil and gas well cementing, and more particularly relates to a high-temperature magnesium oxychloride thermosetting resin gelling system, a solidified body and a preparation method thereof. Background technique [0002] Oil well cement is a calcium oxide type Portland cement, which belongs to hydraulic cementitious materials. It can be mixed with water in a certain proportion to form cement slurry, and hardened underground into cement stone with certain compressive strength, impermeability and durability, and it can also be widely used with various additives and external materials compatibility, density, strength and curing time can be designed and controlled within a certain range, and can easily meet the needs of conventional cementing projects. As a general sealing medium for well cementing projects, it has been widely used for more than 100 years It is used in various operations such as oil field drilling, wel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B22/16C04B24/12C09K8/467C09K8/473
CPCC04B22/16C04B24/123C04B28/32C04B2201/20C04B2201/50C09K8/467C09K8/473C04B24/281C04B22/066C04B22/124C04B24/2623C04B24/42C04B2103/0068C04B22/002
Inventor 谭春勤周仕明陈雷高元初永涛赵艳
Owner CHINA PETROLEUM & CHEM CORP
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