Cement for cementing fireflood thickened oil thermal production well

A technology for thermal recovery well cementing and heavy oil thermal recovery, which is applied in the field of cementing cement, can solve the problems of poor high temperature resistance, short service life, and low strength of cement, and achieve good high temperature resistance, long service life, and production low cost effect

Active Publication Date: 2016-01-27
JIAHUA SPECIAL CEMENT
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Problems solved by technology

[0010] The present invention aims to provide a cementing cement for heavy oil thermal recovery wells driven by fire. The present invention selects phosphate and aluminosilicate as cementitious materials, and adds a certain proportion of active external admixtures and high-temperature external admixtures, Improve the strength and temperature resistance in the cementing process, and solve the problems of poor high temperature resistance, low strength and short service life of cement in the process of heavy oil thermal recovery in the prior art

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  • Cement for cementing fireflood thickened oil thermal production well
  • Cement for cementing fireflood thickened oil thermal production well

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with embodiment.

[0028] Among the following examples, examples 1 to 7 are the cementing cements for fire-flooding heavy oil thermal recovery wells of the present invention, and examples 8 and 9 are comparative examples, which are G-grade oil well cement and aluminate cement respectively. The specific formulations are as follows: Table 1 below.

[0029] Table 1:

[0030]

[0031] In the above examples, aluminate cement was produced by Zhengzhou Jianai Special Aluminate Co., Ltd., sodium hexametaphosphate and sodium polyphosphate were produced by Sichuan Jinshi Phosphorus Chemical Co., Ltd., and aluminum dihydrogen phosphate was produced by Zhengzhou Yucai Phosphate Chemical Plant. Production, aluminum tripolyphosphate is produced by Shijiazhuang Xinsheng Chemical Co., Ltd.; kaolin is provided by Zhongshi Hengda Mineral Products Processing Plant in Lingshou County, and bauxite powder is provided by Z...

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Abstract

The invention discloses cement for cementing a fireflood thickened oil thermal production well and belongs to the technical field of oil production. The cement comprises raw materials in percentage by mass as follows: 55%-80% of aluminate cement, 5%-20% of phosphate, 5%-12% of an active admixture and 0-30% of a high-temperature-resistant admixture. The cement is mainly used in the fireflood thickened oil thermal production well cementation process and has the advantages of good high temperature resistance, long service life and low cost.

Description

[0001] technology field. [0002] The invention relates to a well cementing cement, in particular to a well cementing cement for thermal recovery wells of fire flooding heavy oil. Background technique [0003] my country is rich in heavy oil resources, and the proven and controlled reserves have reached 16×10 8 t, is the fourth largest producer of heavy oil in the world after the United States, Canada and Venezuela. The focus is on oil fields such as Shengli, Liaohe, Henan and Xinjiang. my country's onshore heavy oil resources account for more than 20% of the total oil resources, and the annual domestic heavy oil production accounts for about 10% of the total crude oil production. The proven geological reserves of super heavy oil that have not yet been used are 7.01×10 8 t. [0004] Heavy oil has high viscosity, high density, and large flow resistance in the formation. In order to improve the recovery rate, a series of special technologies are used for heavy oil production,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32
Inventor 古安林曾雪玲阳运霞张斌张凌志
Owner JIAHUA SPECIAL CEMENT
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