A kind of oil well cement retarder and its preparation method and application

A technology of oil well cement and retarder, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor temperature resistance and high temperature sensitivity, and achieve good adaptability, good dosage linearity, The effect of good high temperature resistance

Active Publication Date: 2018-08-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The retarder is a liquid with poor temperature resistance and great sensitivity to temperature

Method used

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  • A kind of oil well cement retarder and its preparation method and application
  • A kind of oil well cement retarder and its preparation method and application
  • A kind of oil well cement retarder and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 100 parts of water, 3 parts of sodium glucoheptonate dihydrate, 8 parts of 1-adamantaneethylamine, 10 parts of phosphorous acid, and 1 part of concentrated hydrochloric acid were added to the water, heated to 60°C under stirring, and kept for 10 minutes; then 10 parts of formaldehyde solution was added dropwise under stirring state, and the dropwise addition was completed within 1 hour; the temperature was raised to 80° C., and kept under stirring state for 1 hour to obtain the oil well cement retarder.

Embodiment 2

[0042] 100 parts of water, 4 parts of sodium glucoheptonate dihydrate, 9 parts of 1-adamantaneethylamine, 11 parts of phosphorous acid, and 2 parts of concentrated hydrochloric acid were added to the water, heated to 80°C under stirring, and kept for 1 hour; then 12 parts of formaldehyde solution was added dropwise under stirring state, and the dropwise addition was completed within 1 hour; the temperature was raised to 120° C., and kept under stirring state for 5 hours to obtain the oil well cement retarder.

Embodiment 3

[0044] 100 parts of water, 4 parts of sodium glucoheptonate dihydrate, 10 parts of 1-adamantaneethylamine, 11 parts of phosphorous acid, and 3 parts of concentrated hydrochloric acid were added to the water, heated to 70°C under stirring, and kept for 0.5 hours; then 11 parts of formaldehyde solution was added dropwise under stirring state, and the dropwise addition was completed within 1 hour; the temperature was raised to 100° C., and kept under stirring state for 3 hours to obtain the oil well cement retarder.

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PUM

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Abstract

The invention provides a retarder for the oil well cement, a preparation method thereof and the application thereof, and relates to a retarder for the oil well cement. The retarder for the oil well cement is characterized by comprising the following components in weight part: 100 parts of water, 8-10 parts of 1-rimantadine, 10-12 parts of phosphorous acid, 10-12 parts of 36 to 38 wt% of formaldehyde solution, 3-5 parts of sodium glucoheptonate dihydrate, and 1-3 parts of 36 to 38 wt% of concentrated hydrochloric acid. The invention also relates to the preparation method and the application of the retarder.

Description

technical field [0001] The invention relates to an additive, in particular to a retarder. The invention also relates to the preparation method and application of the retarder. Background technique [0002] Oil well cement retarder is an admixture of oil well cement, usually used in the cement slurry used in oil and gas well cementing operations. In the cementing operation of oil and gas wells, the cement slurry is pumped into the well through the pumping of the cement truck, and the cement slurry is replaced into the annular space between the casing and the wellbore through the process of replacing the slurry, so as to isolate the oil, gas and water layers The purpose of protecting the production layer and supporting the protective casing. [0003] The thickening time of the grout is roughly the time that the grout remains in a liquid, pumpable state. As the hydration reaction in cement proceeds, when it reaches a certain level, the cement slurry will lose its fluidity an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/467C04B103/22
Inventor 张明昌刘学鹏方春飞刘伟周仕明
Owner CHINA PETROLEUM & CHEM CORP
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