On the possibility of applying wave technology when cementing wells
UDC: 622.245
DOI: 10.33285/0130-3872-2023-7(367)-30-34
Authors:
FURSIN SERGEY G.
1,
AL-IDRISI MOHAMMED S.1,
GNEUSH VLADISLAV S.1,
GRIGULETSKIY VLADIMIR G.
1 Kuban State Technological University, Krasnodar, Russia
Keywords: wave technology, well cementing, cement slurries, displacement degree, hydraulic impulses, flow turbulence, annular space, choke
Annotation:
In the practice of wells cementing, there occur difficulties associated with poor replacement of the drilling fluid by cement slurry when pushing it along the annulus. This problem is encountered in almost every well, when fastening all types of casing strings and leads to a significant decrease of cementing quality, behind-the-casing reservoir fluid flows, annular casing pressures and other complications. Traditionally, improving the replacement of drilling fluid by buffer fluid and cement slurry is achieved due to their optimal formulation, casing string equipment, cementing mode and the use of special techniques. Other conditions being equal, to improve the quality of wells cementing, a wave technology of cementing under controlled pressure using hydraulic impulses is proposed. Unlike other technologies, hydraulic impulses are created quite simply and effectively directly in the annulus towards the movement of the cement slurry. This makes it possible to increase the flow turbulence, activate other positive processes in the well, and reduce the risks of complications and accidents.
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