«Onshore and offshore oil and gas well construction»

Time management of wells cementing formation

UDC: 622.245
DOI: 10.33285/0130-3872-2023-12(372)-19-22

Authors:

¹ Tyumen Industrial University, Tyumen, Russia

Keywords: well cementing, strength characteristics, cement mixture, cement stone formation, well cementing tightness, waiting for cement hardening

Annotation:

The well construction cycle consists of a stage associated with the deepening process, which is influenced by many factors, such as the drilling technology used, rock-cutting tools, lithological-stratigraphic section, flushing fluids, wellbore trajectory, extension operations, etc. This, in turn, affects the resulting time costs and the stage without deepening (casing strings running, cementing with the cement stone formation, wellhead piping installation). It is almost impossible to significantly influence the formation of cement stone without additional filling the cement mixture, and there exist certain risks associated with premature thickening of the cement mixture during injection, a decrease of the cement stone strength due to the use of fillers and various additives. The ability to control the cement stone formation allows calculating and setting the time during which the cement stone will reach the required strength characteristics. The solution to this problem is relevant; the result should guarantee the well cementing reliability in terms of the cement stone required characteristics and its adhesion with the casing string and rock.

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