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Method for preparing high-early-strength oil well cement from industrial waste residue

A technology of oil well cement and steel slag, which is applied in the direction of cement production, etc., can solve the problem of rare oil well cement clinker, and achieve the effect of good cementing quality, simple on-site operation and good compatibility

Inactive Publication Date: 2016-07-27
GEZHOUBA SONGZI CEMENT
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Problems solved by technology

Phosphorus slag and steel slag are important components in the treatment of bulk industrial waste slag during the "Twelfth Five-Year Plan". Although there are many research reports, they are relatively rare in the preparation of oil well cement clinker

Method used

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  • Method for preparing high-early-strength oil well cement from industrial waste residue
  • Method for preparing high-early-strength oil well cement from industrial waste residue
  • Method for preparing high-early-strength oil well cement from industrial waste residue

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Embodiment Construction

[0014] The raw meal of the rapid-hardening early-strength oil well cement of the present invention is composed of the following raw materials in mass percentage: 60-75% of limestone, 10-15% of red sandstone, 3-6% of phosphorus slag, 4-7% of steel slag and calcium-increasing slag 15%.

[0015] Its preparation method comprises the following steps:

[0016] ①. Raw meal homogenization: the raw meal of each component is ground and homogenized by a raw meal grinding system;

[0017] ②. Clinker calcination: put the homogenized raw material in step ① into the kiln to calcine the clinker;

[0018] ③. Cement preparation: In the clinker fired in step ②, 0.5-2.5% of silica fume and 2.5-4.5% of gypsum are added to the clinker for cement grinding.

[0019] The clinker in the step ② is controlled by the following quality control indicators: lime saturation coefficient KH=0.930±0.02; silicic acid rate SM=2.75±0.10; aluminum oxygen rate IM=0.80±0.1; tricalcium aluminate C3A≤2.5% .

[0020]...

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Abstract

The invention discloses high-early-strength oil well cement. The raw high-early-strength oil well cement is prepared from the following raw materials in percentage by mass: 60-75% of limestone, 10-15% of red sandstone, 3-6% of phosphorus slag, 4-7% of steel slag and 15% of calcium added slag. The oil well cement disclosed by the invention has the characteristics of short setting time at low temperature, high compressive strength, minimum inflation, and the like, and is in good compatibility with additives; moreover, the dosage of additives can be reduced while the well cementation conditions are met, the site operation is simple, and the well cementation quality is good.

Description

technical field [0001] The invention relates to the technical field of inorganic cementitious materials, in particular to a method for preparing rapid-hardening and early-strength oil well cement from industrial waste residues. Background technique [0002] As the basis for human survival, energy is the driving force for human development. Petroleum is a non-renewable resource, which belongs to primary energy, and occupies a pivotal position in the energy composition of the world today. Therefore, it is particularly important to do a good job in oil extraction. In the process of oil exploitation, cementing work is the prerequisite for ensuring safe exploitation. In order to standardize the performance requirements of cementing oilfield cement, my country formulated GB10238-2005 based on the API oilwell cement standard. Due to the complexity of the terrain and environment of oil exploitation, the performance of oil well cement specified in GB10238-2005 sometimes cannot ful...

Claims

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Application Information

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IPC IPC(8): C04B7/24
CPCC04B7/24Y02P40/10
Inventor 邹兴芳夏枫童昊郭成洲陆小黑张德华刘生超杨莉荣
Owner GEZHOUBA SONGZI CEMENT
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