High-temperature-resistant suspending agent for flexible cement mortar and preparation method thereof, and cement mortar

A high-temperature flexible, cement slurry technology, applied in the field of petroleum exploration, can solve the problems that the fluidity of the slurry cannot be guaranteed, the preparation method of the suspension stabilizer DRY-S2 is not given, and the pumpability is good. The effect of excellent settlement stability performance

Active Publication Date: 2018-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In "Research and Application of High Temperature Suspension Stabilizer DRY-S2" (Drilling Fluid and Completion Fluid, Volume 30, Issue 3, 2013), the author did not give the preparation method of the suspension stabilizer DRY-S2, nor gave Adding DRY-S2 to the rheological performance index of the cement slurry, only the settlement test of the cement slurry is given, and it cannot guarantee whether the fluidity and pumpability of the slurry are good

Method used

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  • High-temperature-resistant suspending agent for flexible cement mortar and preparation method thereof, and cement mortar
  • High-temperature-resistant suspending agent for flexible cement mortar and preparation method thereof, and cement mortar
  • High-temperature-resistant suspending agent for flexible cement mortar and preparation method thereof, and cement mortar

Examples

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Embodiment 1

[0032] Preparation of suspending agent for high-temperature-resistant flexible cement slurry: put 100 parts by weight of water into the slurry cup, add 30 parts by weight of spherical silica with a particle size of 100-200 μm, and add 6 parts by weight of glass fiber with a size of 2.5mm-3.5mm , add 6 parts by weight of sodium silicate, add 6 parts by weight of styrene-acrylic latex, stir at 50°C for 3 hours, and after stirring evenly, suspending agent A is obtained.

[0033] Prepare cementing cement slurry: prepare cement slurry according to GB / T19139 standard, weigh 100 parts by weight of Jiahua G grade oil well cement, 8 parts of elastic particles (styrene-butadiene rubber), 5 parts of fluid loss reducer DZJ-Y (market (commercially available), 2.0 parts of dispersant DZS (commercially available) and 3.5 parts of retarder DZH (commercially available), mix homogeneously, add 1.0 part of suspending agent A of the present invention in the cement slurry, and the liquid-solid rati...

Embodiment 2

[0035] Preparation of suspending agent for high-temperature-resistant flexible cement slurry: put 100 parts by weight of water into the slurry cup, add 40 parts by weight of spherical silica (100-200 μm), and add 7 parts by weight of glass fiber (size is 2.5mm-3.5mm) , add 7 parts by weight of sodium silicate, add 7 parts by weight of styrene-acrylic rubber, stir at 30°C for 5 hours, and after stirring evenly, suspending agent B is obtained.

[0036] Preparation of cementing cement slurry: prepare cement slurry according to GB / T19139 standard, weigh 100 parts by weight of Jiahua G grade oil well cement, 20 parts of elastic particles (styrene-butadiene rubber), 5 parts of fluid loss reducer DZJ-Y (city (commercially available), 2.0 parts of dispersant DZS (commercially available) and 3.5 parts of retarder DZH (commercially available), mix homogeneously, add 3.0 parts of suspending agent B of the present invention in the cement slurry, and the liquid-solid ratio is 0.44, get fle...

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Abstract

The invention relates to a high-temperature-resistant suspending agent for flexible cement mortar and a preparation method thereof, and cement mortar, belonging to the field of oil exploration. The suspending agent comprises, on the basis of 100 parts by weight of water, 100 parts of water, 20 to 50 parts of spherical oxide, 5 to 8 parts of short fibers, 3 to 8 parts of silicate and 3 to 8 parts of latex. After addition of the suspending agent provided by the invention, the cement mortar has excellent settlement stability and has density difference of no more than 0.02 g/cm<3>; obvious upward-floating of elastic particles does not occur; and rheological properties of the cement mortar with the suspending agent are almost same at different temperatures.

Description

technical field [0001] The invention relates to the field of petroleum exploration, and more particularly, relates to a suspending agent for high-temperature-resistant flexible cement slurry, a preparation method thereof and the cement slurry. Background technique [0002] In China, the research field of flexible cement slurry system started from the demand for mechanical properties of cement stone in staged fracturing wells. At the same time, with the further development of domestic unconventional oil and gas resources, staged fracturing technology has been widely used in China, so the flexible The research on cement slurry (or similar functional products) has reached a white-hot stage. The key material of flexible cement slurry is elastic material. At present, most elastic materials are rubber products, and rubber particles are not compatible in cement slurry, and because of the large density difference between rubber particles and cement slurry, it often causes the cemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B24/42C04B28/00C09K8/467C09K8/487
CPCC04B28/00C04B40/0039C04B2111/00724C09K8/467C09K8/487C09K2208/08C04B14/06C04B14/42C04B14/045C04B24/2676C04B2103/46C04B2103/408C04B2103/22
Inventor 汪晓静谭春勤曾敏刘仍光高元
Owner CHINA PETROLEUM & CHEM CORP
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