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High-temperature well cementation cement as well as preparation method and application thereof

A technology of cementing cement and cementing slurry, which is applied in the field of cement, can solve the problems of low strength and short thickening time in the later stage, achieve long thickening time, stable thickening time, and benefit structural durability and safety Effect

Inactive Publication Date: 2020-12-18
大连水泥集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a high-temperature cementing cement and its preparation method and application, which can solve the problems of short thickening time and low later strength in high-temperature formations

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  • High-temperature well cementation cement as well as preparation method and application thereof
  • High-temperature well cementation cement as well as preparation method and application thereof
  • High-temperature well cementation cement as well as preparation method and application thereof

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Embodiment Construction

[0047] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation and characteristics of a high-temperature cementing cement proposed according to the present invention and its preparation method and application are described below in conjunction with preferred embodiments. And its effect, detailed description is as follows. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features or characteristics of one or more embodiments may be combined in any suitable manner.

[0048] It should be noted that, unless otherwise specified, technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which this application belongs.

[0049]The following materials or reagents are commercially available unless otherwise...

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Abstract

The invention relates to high-temperature well cementation cement as well as a preparation method and application thereof. The high-temperature well cementation cement comprises the following raw materials in percentage by mass: 69-72% of cement raw material and 28-31% of quartz sand; wherein the cement raw material is composed of G-grade oil well cement and nuclear power cement in a mass ratio of4:6 to 5:5. The well cementation cement provided by the invention is relatively long and stable in thickening time, basically does not decline in strength along with temperature rise, and is particularly suitable for well cementation engineering in Africa.

Description

technical field [0001] The invention belongs to the technical field of cement, and in particular relates to a high-temperature well cementing cement and its preparation method and application. Background technique [0002] Well cementing is the premise and basis for the safe, economical and efficient development of oil and gas resources, and it is also a key link in the construction of oil and gas wells. It can seal off oil, gas and water layers in complex formations such as oil and gas leaks, establish oil and gas outflow channels, prevent mutual channeling between production layers, and protect casings. Therefore, the quality of cementing will directly affect the production safety, production life and economic benefits of oil and gas wells. [0003] G-grade oil well cement is a commonly used high-temperature cementing material, but there is a problem of short-term cement stone strength decline in some high-temperature formations such as service, because African countries ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/04C09K8/467C04B7/36C04B7/52C04B28/04
CPCC04B7/04C04B7/36C04B7/52C04B28/04C09K8/467C04B22/002C04B2103/0068C04B2103/50
Inventor 刘圣忠赵兵刘吉廷刘文忱刘新宇曲巍芦士博
Owner 大连水泥集团有限公司
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