«Onshore and offshore oil and gas well construction»

Experience of determining internal stresses arising during the hardening process of binding materials

UDC: 622.245.422
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: internal stresses in a cement stone, expansion mechanism, expansion additives, methods for determining expansion, stress sensors, cement stone

Annotation:

The authors of the article review the experience of studying and measuring internal stress in a cement stone. The scientific-technical information regarding methods for assessing emerging internal stresses in limited well conditions is analyzed. The methods and instruments for assessing internal stresses in a cement stone and concrete structures, used in industrial and civil construction, are considered. The currently existing theories of the expansion mechanism of cement stone are analyzed. Various types of additives used for the expansion effect are considered. Examples of determining the intrinsic stresses during the structure formation of cement stone, which could show a reliable testing result are given.

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