To the problem of production columns leakage
UDC: 622.06
DOI: 10.33285/0130-3872-2023-4(364)-35-38
Authors:
KHUZINA LILIYA B.
1,
FATTAKHOV IRIK G.2,
KHUZIN RINAT R.3,
LYUBIMOVA SVETLANA V.1
1 Almetyevsk State Oil Institute, Almetyevsk, Russia
2 Tatneft named after V.D. Shashin, Almetyevsk, Russia
3 Karbon-Oil, Almetyevsk, Russia
Keywords: pipe string leakage, causes of leakage, distance of disturbances, well killing, corrosion processes, cementing, depressurization of coupling joints
Annotation:
The article deals with the problem of leaks in the production strings of production and injection wells, which is becoming increasingly important every year, due to the fact that the water cut of the produced products increases, and, as a result, the operation of wells becomes unprofitable. The main reasons for strings leakages are the following ones: well stock aging, poor-quality cementing during final work of drilling, corrosion at the points of contact between aquifers and the string, well killing at pressures above test-proof pressure, depressurization of coupling joints, metal corrosion and other technological reasons. Identification of the factors affecting the violation of production strings integrity during corrosion in the course of well operation is necessary and important, since these data are taken into account when developing measures that increase the period of trouble-free operation of wells. The work analyzed 150 wells of a multi-layer field at the late stage of development, in which a major overhaul was carried out by PJSC "Tatneft".
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