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2011•Drilling Fluid & Completion FluidRequires access

Research and Application on New Type of Retarder Used in Long Cementing Intervals

Peng Xu

Open publisher page 3 citations

Abstract

To overcome the problem of over-retardation happens on top of cement slurry in deep and ultra-deep wells with big temperature difference and long cementing intervals,a new type of retarder BCR-260L is developed,and it has good thermal stability that can be used at the temperature of 70-180 ℃.The retarder BCR-260L has no effect on later strength development,and makes the strength develop fast at big temperature difference.The application of the well 62 in LG block is successful,which gets good cementing job quality.

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What this paper is about

To overcome the problem of over-retardation happens on top of cement slurry in deep and ultra-deep wells with big temperature difference and long cementing intervals,a new type of retarder BCR-260L is developed,and it has good thermal stability that can be used at the temperature of 70-180 ℃.The retarder BCR-260L has no effect on later strength development,and makes the strength develop fast at big temperature difference.The application of the well 62 in LG block is successful,which gets good cementing job quality.

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Available abstract

To overcome the problem of over-retardation happens on top of cement slurry in deep and ultra-deep wells with big temperature difference and long cementing intervals,a new type of retarder BCR-260L is developed,and it has good thermal stability that can be used at the temperature of 70-180 ℃.The retarder BCR-260L has no effect on later strength development,and makes the strength develop fast at big temperature difference.The application of the well 62 in LG block is successful,which gets good cementing job quality.

Key concepts: Retarder, Slurry, Significant difference, Materials science, Block (permutation group theory), Cement, Geotechnical engineering, Petroleum engineering

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