Buffer liquids for improving the quality of a casing string cementing
UDC: 622.244.443
DOI: 10.33285/0130-3872-2023-6(366)-38-43
Authors:
SHCHERBICH NIKOLAI E.
1,
KUZNETSOV VLADIMIR G.1,
BALUEV ANATOLIY A.1
1 Tyumen Industrial University, Tyumen, Russia
Keywords: well, buffer fluid, casing strings, cementing, cement slurry
Annotation:
The article is devoted to the development of buffer liquids compositions. The results of experimental studies are presented. The effectiveness of various buffer fluids for improving the quality of casing string cementing is given. Despite the wide variety of buffer liquid formulations, a universal one has not yet been developed that would fully meet all the necessary requirements, such as: high washing, remote and clogging ability, the ability to increase the adhesion of a cement stone to the surfaces of pipes and the wellbore, the formation of minimal zones of mixing with grouting and drilling fluids, preservation of the reservoir properties of the productive reservoirs rocks, etc. As a result of the exploration performed, several types of buffer liquids were substantiated and tested in laboratory and field conditions, recommendations for their use were given.
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