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High-temperature-resistant anti-channeling emulsion elastic and tough cement paste and preparation method thereof

A high-temperature, cement-slurry technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., to achieve the effects of reducing water loss of cement slurry, enhancing anti-gas channeling performance, and improving stability

Inactive Publication Date: 2020-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, it relates to a high-temperature anti-channeling emulsion elastic toughness cement slurry and a preparation method thereof

Method used

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  • High-temperature-resistant anti-channeling emulsion elastic and tough cement paste and preparation method thereof
  • High-temperature-resistant anti-channeling emulsion elastic and tough cement paste and preparation method thereof
  • High-temperature-resistant anti-channeling emulsion elastic and tough cement paste and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Weigh 200g of G-grade high sulfur-resistant oil well cement, 100g of high-temperature strength stable material, 16g of high-temperature expansion agent, 4g of high-temperature toughening material, 180g of density adjustment material, 20g of high-temperature organic anti-channeling emulsion, and 10g of high-temperature inorganic anti-channeling emulsion. Anti-high temperature water loss reducer 24g, high temperature retarder 7g, defoamer 4g, fresh water 334g.

[0057] Among them: the G-grade high sulfur-resistant oil well cement is Jiahua G-grade high sulfate-resistant oil well cement;

[0058] The high-temperature strength stable material is compounded and mixed with fly ash, 180-mesh silicon powder and micro-silicon, and the weight ratio of the three is 7:1:4; (the compounding method is dry mixing);

[0059] The high-temperature expansion agent magnesium oxide;

[0060] The high temperature resistant toughening material is an organic toughening fiber;

[0061] The de...

Embodiment 2

[0069] Weigh 600g of G-grade high sulfate-resistant oil well cement, 240g of high-temperature strength stable material, 24g of high-temperature expansion agent, 6g of high-temperature toughening material, 24g of high-temperature organic anti-channeling emulsion, 30g of high-temperature inorganic anti-channeling emulsion, and high-temperature loss resistance Aqua 36g, high temperature retarder 15g, defoamer 6g, fresh water 250g.

[0070] Among them: the G-grade high sulfur-resistant oil well cement is Jiahua G-grade high sulfate-resistant oil well cement;

[0071] The high-temperature strength stable material is made of 120-mesh silicon powder, 180-mesh silicon powder and micro-silicon, and the weight ratio of the three is 4:6:1;

[0072] The high-temperature expansion agent is magnesium oxide;

[0073] The high temperature resistant toughening material is an organic toughening fiber;

[0074] Described anti-high temperature organic anti-channeling emulsion is styrene-acrylic...

Embodiment 3

[0081] Weigh 600g of G-grade high sulfur-resistant oil well cement, 330g of high-temperature strength stable material, 24g of high-temperature expansion agent, 9g of high-temperature toughening material, 60g of high-temperature organic anti-channeling emulsion, 48g of high-temperature inorganic anti-channeling emulsion, high-temperature resistance and water loss reduction Agent 24g, high temperature retarder 27g, defoamer 6g, fresh water 255g.

[0082] Among them: the G-grade high sulfur-resistant oil well cement is Jiahua G-grade high sulfate-resistant oil well cement;

[0083] The high-temperature strength stable material is made of 120-mesh silicon powder, 180-mesh silicon powder, and micro-silicon, and the weight ratio of the three is 4:6:1;

[0084] The high-temperature expansion agent magnesium oxide;

[0085] The high temperature resistant and toughening material is an inorganic mineral fiber;

[0086] Described anti-high temperature organic anti-channeling emulsion i...

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Abstract

The invention relates to high-temperature-resistant anti-channeling emulsion elastic and tough cement paste and a preparation method thereof, and belongs to the field of oil-gas well cementing cementpaste, wherein the high-temperature-resistant anti-channeling emulsion elastic and tough cement paste comprises the following components in parts by weight: 100 parts of G-grade oil well cement, 3-20parts of a high-temperature-resistant organic anti-channeling emulsion, 3-15 parts of a high-temperature-resistant inorganic anti-channeling emulsion, 0.5-5 parts of a high-temperature-resistant toughening material, 20-90 parts of a high-temperature strength stabilizing material, 1-10 parts of a high-temperature expanding agent, 1-12 parts of a high-temperature-resistant fluid loss agent, 0.1-10 parts of a high-temperature retarder, 0.5-3 parts of an antifoaming agent, 0-300 parts of a density adjusting material, and 35-200 parts of water. According to the invention, the cement paste system ismainly applied to the field of high-temperature oil-gas well cementation below 200 DEG C, the gas channeling prevention performance is excellent, caement is high and stable in high-temperature strength and low in elastic modulus, the gas layer can be subjected to effective sealing and annulus sealing in high-temperature and high-pressure gas well cementation, the annulus gas channeling and the wellhead pressure are prevented, the efficient production of an oil-gas well is guaranteed, and good application and popularization value is achieved.

Description

technical field [0001] The invention relates to the field of cement slurry for oil and gas well cementing, and more particularly relates to a high-temperature anti-channeling emulsion elastic-tough cement slurry and a preparation method thereof. Background technique [0002] With the deepening of exploration and development, there are more and more deep wells and ultra-deep wells. The cementing of ultra-deep high-temperature and high-pressure oil and gas wells is faced with the problem of poor anti-gas channeling performance of cement slurry at high temperature, which makes it impossible to effectively prevent gas channeling during the cementing stage; The strength declines, the bearing capacity of cement stone decreases, and the main body breaks easily, and the bonding ability between the cement sheath and the interface becomes poor, which easily produces micro-annular gaps and other problems, which makes the cement sheath seal invalid, annular channeling, and even wellhead ...

Claims

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Application Information

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IPC IPC(8): C04B28/02C09K8/493
CPCC04B28/02C04B2111/00724C09K8/493C04B18/08C04B14/06C04B14/062C04B22/066C04B16/06C04B14/22C04B24/26C04B24/045C04B2103/22C04B24/42C04B14/36C04B18/12
Inventor 高元杨广国周仕明桑来玉陆沛青魏浩光杨红歧常连玉
Owner CHINA PETROLEUM & CHEM CORP
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