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Well cementation material, well cementation material system and preparation method thereof

A cementing and system technology, applied in the directions of chemical instruments and methods, drilling compositions, etc., can solve the problems such as strength decline of cementing hardened body, achieve low strength decline rate and permeability, not easy to settle, and reduce strength decline. The effect of rate and permeability

Active Publication Date: 2017-03-15
中石化石油工程技术服务有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cementing material, so as to solve the problem in the prior art that the strength of the cemented hardened body declines under high-temperature steam during the steam injection production of heavy oil wells

Method used

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  • Well cementation material, well cementation material system and preparation method thereof
  • Well cementation material, well cementation material system and preparation method thereof

Examples

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Embodiment 1

[0028] The cementing material of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 5 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, and 2 parts of silica fume. Mix high temperature resistant cementing matrix material, high temperature microcrystalline reinforcement material, fluid loss reducer, and silica fume evenly to obtain the product.

[0029] The cementing material system of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 5 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, 2 parts of silica fume, drag reducing 1.5 parts of agent, 0.2 parts of defoamer, 50 parts of water. The defoamer is tributyl phosphate.

[0030] The preparation method of the cementing material system of the present...

Embodiment 2

[0034] The cementing material of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 7 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, and 2 parts of silica fume. Mix high temperature resistant cementing matrix material, high temperature microcrystalline reinforcement material, fluid loss reducer, and silica fume evenly to obtain the product.

[0035] The cementing material system of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 7 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, 2 parts of silica fume, drag reducing 2 parts of agent, 0.2 parts of defoamer, 50 parts of water. The defoamer is tributyl phosphate.

[0036] The preparation method of the cementing material system of the present e...

Embodiment 3

[0040] The cementing material of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 9 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, and 2 parts of silica fume. Mix high temperature resistant cementing matrix material, high temperature microcrystalline reinforcement material, fluid loss reducer, and silica fume evenly to obtain the product.

[0041] The cementing material system of this embodiment is composed of the following components in parts by weight: 100 parts of high temperature resistant cementing matrix material, 9 parts of high temperature microcrystalline reinforcement material, 1.6 parts of fluid loss reducer, 2 parts of silica fume, drag reducing 2 parts of agent, 0.2 parts of defoamer, 50 parts of water. The defoamer is tributyl phosphate.

[0042] The preparation method of the cementing material system of the present e...

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Abstract

The invention discloses a well cementation material, a well cementation material system and a preparation method thereof. The well cementation material comprises the following components by weight: 100 parts of a high temperature resistant well cementation matrix material, 5-9 parts of a high temperature microcrystalline reinforced material, 1-2 parts of a filtrate reducer, and 1-4 parts of silica fume. The high temperature resistant well cementation matrix material is obtained by firing MgO, Al2O3, SiO2, CaO, SO3 and Na2O, and the high temperature microcrystalline reinforced material consists of superfine cement and mineral fiber. The well cementation material slurry prepared from the well cementation material and water has the advantages of good system stability, low filtration water loss, long coagulation time, and fast strength development. The formed hardened body has high strength at low temperature, high strength at high temperature, low permeability and slight expansion performance, low strength retrogression rate and permeability at high temperature, has good application prospects in the heavy oil reservoir high temperature steam injection development field, and has good adaptability in shallow heavy oil thermal production well cementing engineering construction.

Description

technical field [0001] The invention belongs to the field of cementing materials, and in particular relates to a cementing material suitable for heavy oil thermal recovery wells, a cementing material system and a preparation method thereof. Background technique [0002] Liaohe, Karamay, Shengli and Henan oilfields all have heavy oil resources, and more than 70 heavy oil fields have been discovered in 12 basins. It is estimated that China's heavy oil and bitumen resources can reach 300×10 8 t above. Therefore, the exploitation of heavy oil has great potential, and with the reduction of light oil reserves, the proportion of heavy oil exploitation will continue to increase. [0003] During the production of heavy oil, the temperature of steam injected into the formation can reach 300°C to 350°C, the thermal stability of the oil and gas well cement after adding sand will still decrease, and the cement stone extracted from the well after thermal recovery will become loose and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/467C04B28/02C04B7/345C04B7/36
CPCC04B7/345C04B7/36C04B28/02C04B2111/00724C04B2201/50C09K8/467C04B7/00C04B14/46C04B18/146C04B2103/46C04B24/003C04B2103/34
Inventor 肖武锋张桂强贾增全夏烈虎吴天乾何德清黄后初宋福军于三跃王海娟
Owner 中石化石油工程技术服务有限公司
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