METHOD FOR MONITORING THE QUALITY AND TIGHTNESS OF WELL CEMENTING Russian patent published in 2021 - IPC E21B47/00

Abstract RU 2743917 C1

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry and can be used in the study of the quality of cementing of elements of the well structure. According to the method, in cement or grouting mortar tracer marks or markers are added, contained in polymer matrix, which can be dissolved only in water, oil or gas, or upon contact with well fluid with the release or termination of release of tracer marks of polymer matrix and tracer marks registration at the well outlet. The quality and tightness of the well cementation are judged, according to the registered data. Moreover, polymer matrix used as an additive to cement or grouting mortar is a marker itself.

EFFECT: technical result is to improve quality of cementing, formation and tracking of marks, obtaining qualitative and quantitative indicators of wellbore isolation in real time without stopping, additional work and research.

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RU 2 743 917 C1

Authors

Zhuravlev Oleg Nikolaevich

Taranenko Andrej Vladimirovich

Dates

2021-03-01—Published

2020-05-12—Filed