Analysis of technical solutions for preventing admission of formation fluids in the annular space of the well during the waiting on cement time
https://doi.org/10.31660/0445-0108-2019-5-64-71
Abstract
The creation of a sealed support, providing reliable isolation of layers from each other, is one of the most important tasks in the construction of oil and gas wells. The article presents the most common in recent years in our country and abroad special technological and technical measures used to improve the quality of isolation of oil and gas reservoirs at the stage of cementing and waiting on cement with different gradients of reservoir pressures. Attention is drawn to technical and technological solutions for preventing admission of formation fluids in the annular space of the well during cementing and waiting on cement. The solution to this problem is based on creating the design pressure at the wellhead in the annulus at a rate proportional to the rate of reduction of the hydrostatic pressure column of cement slurry (drilling mud) due to the structure hardening cement slurry.
About the Authors
Ya. M. Kurbanov
Industrial University of Tyumen
Russian Federation
Russian Federation
Yaragi M. Kurbanov, Doctor of Engineering, Professor
Tyumen
N. A. Cheremisina
NovTekhServis LLC
Russian Federation
Russian Federation
Natalya A. Cheremisina, Head of the Center for Laboratory Research
Tyumen
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Review
For citations:
Kurbanov Ya.M., Cheremisina N.A. Analysis of technical solutions for preventing admission of formation fluids in the annular space of the well during the waiting on cement time. Oil and Gas Studies. 2019;(5):64-71. (In Russ.) https://doi.org/10.31660/0445-0108-2019-5-64-71
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