«Onshore and offshore oil and gas well construction»

Analysis of the quality of production wells primary cementing of the second experimental area of the Achimov deposits of the Urengoy oil and gas condensate field

UDC: 622.24
DOI: 10.33285/0130-3872-2023-6(366)-44-51

Authors:

¹ Gazprom VNIIGAZ, Moscow, Russia

Keywords: buffer mixture, expanding cement mixture, Urengoy oil and gas condensate field, casing strings cementing technology, interlayer fluid flows, annular pressures

Annotation:

The article considers designed buffer and grouting materials intended for use in primary cementing of wells in the geological conditions of the second experimental area of the Achimov deposits of the Urengoy oil and gas condensate field. Design plugging materials at different pressures and temperatures in the annulus and inter-string environment form shrinkable plugging stones, which cause various complications of the primary cementing process in these geological conditions. A significant improvement of the quality of casing strings primary cementing can be achieved as a result of a reasonable choice of new highly effective component compositions of buffer and cement mixtures and improvement of their practical application technologies.

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